The development of behavioral control studies for Thyrinteina arnobia (Stoll, 1782) (Lepidoptera: Geometridae) involves the elucidation of the chemical ecology, which begins with the observation of the calling sexual behavior through the exposure of females abdominal gland. After the pheromone release, the perception of chemical substances is carried out in the sensilla of male antennae, whose characterization can be carried out using scanning electron microscopy (SEM). Thus, this research aimed to ultrastructurally characterize the antennal sensilla of males and females of T. arnobia. For the characterization of the structural morphology of the sensilla in the antennae of females and males of T. arnobia, scanning electron microscopy was used. In total, six types of sensilla were identified, and characterized in trichoid, squamiform, caetic, basiconic, celoconic and styloconic. The antennae of female and male T. arnobia have different structural morphology of sensilla. The trichoid sensilla are the most abundant, mainly in the antennae of males, indicating that they can respond to stimuli from chemical substances, since these sensilla are recognized for their sex pheromone receptor function. The present study allows a better understanding of the sexual dimorphism between female and male T. arnobia.
{"title":"Morphological characterization and distribution of antennal sensilla on Thyrinteina arnobia (Stoll, 1782) (Lepidoptera: Geometridae)","authors":"Elmadã Pereira Gonzaga , Camila Alexandre Cavalcante de Almeida , Lucas Teles Bezerra , Maclauds Nathan Feliciano Salmento , Fernanda da Silva Gonçalves , Henrique Fonseca Goulart , Antônio Euzébio Goulart Santana , Johnnatan Duarte de Freitas , Mariana Oliveira Breda","doi":"10.1016/j.jcz.2026.01.007","DOIUrl":"10.1016/j.jcz.2026.01.007","url":null,"abstract":"<div><div>The development of behavioral control studies for <em>Thyrinteina arnobia</em> (Stoll, 1782) (Lepidoptera: Geometridae) involves the elucidation of the chemical ecology, which begins with the observation of the calling sexual behavior through the exposure of females abdominal gland. After the pheromone release, the perception of chemical substances is carried out in the sensilla of male antennae, whose characterization can be carried out using scanning electron microscopy (SEM). Thus, this research aimed to ultrastructurally characterize the antennal sensilla of males and females of <em>T. arnobia</em>. For the characterization of the structural morphology of the sensilla in the antennae of females and males of <em>T. arnobia</em>, scanning electron microscopy was used. In total, six types of sensilla were identified, and characterized in trichoid, squamiform, caetic, basiconic, celoconic and styloconic. The antennae of female and male <em>T. arnobia</em> have different structural morphology of sensilla. The trichoid sensilla are the most abundant, mainly in the antennae of males, indicating that they can respond to stimuli from chemical substances, since these sensilla are recognized for their sex pheromone receptor function. The present study allows a better understanding of the sexual dimorphism between female and male <em>T. arnobia</em>.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 213-221"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-02-04DOI: 10.1016/j.jcz.2026.02.001
Fátima F. Brito , Ariel A. Beltramino , Juan López-Gappa , Marina Güller
Deroceras laeve, an invasive slug with a worldwide distribution, is an intermediate host of parasitic nematodes, causes economic losses in crops, and may also negatively affect the native fauna. Based on specimens collected in Buenos Aires (Argentina), museum material, and all sequences available in online databases, we conducted a phylogenetic study of D. laeve and applied species delimitation methods using the mitochondrial cytochrome c oxidase subunit I gene (COI), along with anatomical analyses of the genitalia, radula, and maxilla. We demonstrate that D. laeve comprises several well-separated mitochondrial lineages, which we treat as six haplogroups, and three additional sequences that did not fit within these haplogroups. This is the first reliable morpho-anatomical identification of D. laeve in South America linked to genetic information. We discuss the possible introduction pathways of the most widely diversified haplogroup and compare the anatomical features of our material with those of previous studies. Further analyses should be performed in order to expand knowledge of the D. laeve lineages, integrating molecular results with detailed anatomical and ecological information.
{"title":"Disclosing the hidden diversity of the invasive slug Deroceras laeve (Müller, 1774) (Gastropoda, Pulmonata)","authors":"Fátima F. Brito , Ariel A. Beltramino , Juan López-Gappa , Marina Güller","doi":"10.1016/j.jcz.2026.02.001","DOIUrl":"10.1016/j.jcz.2026.02.001","url":null,"abstract":"<div><div><em>Deroceras laeve</em>, an invasive slug with a worldwide distribution, is an intermediate host of parasitic nematodes, causes economic losses in crops, and may also negatively affect the native fauna. Based on specimens collected in Buenos Aires (Argentina), museum material, and all sequences available in online databases, we conducted a phylogenetic study of <em>D. laeve</em> and applied species delimitation methods using the mitochondrial cytochrome <em>c</em> oxidase subunit I gene (<em>COI</em>), along with anatomical analyses of the genitalia, radula, and maxilla. We demonstrate that <em>D. laeve</em> comprises several well-separated mitochondrial lineages, which we treat as six haplogroups, and three additional sequences that did not fit within these haplogroups. This is the first reliable morpho-anatomical identification of <em>D. laeve</em> in South America linked to genetic information. We discuss the possible introduction pathways of the most widely diversified haplogroup and compare the anatomical features of our material with those of previous studies. Further analyses should be performed in order to expand knowledge of the <em>D. laeve</em> lineages, integrating molecular results with detailed anatomical and ecological information.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 385-399"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-02-07DOI: 10.1016/j.jcz.2026.02.005
Anna S. Koroleva, Glafira D. Kolbasova, Tatiana V. Neretina, Alexander B. Tzetlin
Apodotrocha tobik sp. nov., a new meiobenthic annelid from the White Sea, is described as the second known species of this paedomorphic genus within Dorvilleidae. Alongside minute size and trochophore-like morphology, which reflect the paedomorphic nature of the genus, the species also possess specific epithelial pockets that appear to host bacterial symbionts. In addition, we provide the first molecular sequences from specimens of the genus Apodotrocha. Phylogenetic analysis recovers A. tobik sp. nov. as the sister taxon to Parapodrilus psammophilus, with both lineages nested within the Ophryotrocha clade of Dorvilleidae. Taken together, these findings extend current knowledge of paedomorphic dorvilleids and raise the question about their position within the Dorvilleidae family.
{"title":"Adding to the dwarfs: a second species of paedomorphic genus Apodotrocha (Dorvilleidae, Annelida) from the White Sea","authors":"Anna S. Koroleva, Glafira D. Kolbasova, Tatiana V. Neretina, Alexander B. Tzetlin","doi":"10.1016/j.jcz.2026.02.005","DOIUrl":"10.1016/j.jcz.2026.02.005","url":null,"abstract":"<div><div><em>Apodotrocha tobik</em> sp. nov., a new meiobenthic annelid from the White Sea, is described as the second known species of this paedomorphic genus within Dorvilleidae. Alongside minute size and trochophore-like morphology, which reflect the paedomorphic nature of the genus, the species also possess specific epithelial pockets that appear to host bacterial symbionts. In addition, we provide the first molecular sequences from specimens of the genus <em>Apodotrocha</em>. Phylogenetic analysis recovers <em>A. tobik</em> sp. nov. as the sister taxon to <em>Parapodrilus psammophilus</em>, with both lineages nested within the <em>Ophryotrocha</em> clade of Dorvilleidae. Taken together, these findings extend current knowledge of paedomorphic dorvilleids and raise the question about their position within the Dorvilleidae family.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 400-412"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-09DOI: 10.1016/j.jcz.2026.01.001
Bader H. Alhajeri
Cranial diversity in desert rodents reflects evolutionary history, developmental constraints, and environmental pressures, poorly understood in South American sigmodontines. This study used geometric morphometric methods to examine drivers of interspecific cranial shape variation in the phyllotine genus Eligmodontia, integrating phylogenetic, allometric, and ecological perspectives. I digitized 71 landmarks on 151 adult specimens representing six Eligmodontia species and one outgroup (Calomys callosus) from 54 localities across South America, analyzing patterns using an ANOVA framework based on residual randomization in a permutation procedure (RRPP), allometric regressions, principal component analysis (PCA), and clustering methods. Scaled cranial shape distinguished all analyzed species pairs except the closely related E. hirtipes-E. puerulus, demonstrating effective taxonomic resolution. Phylogenetic congruence was limited, with morphological clustering diverging from molecular relationships. Larger crania exhibited typical mammalian allometric scaling patterns with elongated rostra (faces) and contracted braincases. Climate and geography significantly influenced cranial variation, with northern taxa differing morphologically from central-southern species in tympanic bulla inflation, corresponding to distinct spatially structured climatic regimes of seasonal versus year-round precipitation patterns. In addition to bulla hypertrophy, ecological adaptations also included nasal elongation and narrowing in more arid habitats, plus increased cranial robustness in tougher soils and for high bite-force diets. This study reveals that developmental constraints and environmental pressures jointly drive cranial diversification in eligmodontines, establishing scaled cranial shape as a valuable taxonomic tool and providing new insights into adaptive evolution in South American desert rodents.
沙漠啮齿类动物的颅骨多样性反映了进化史、发育限制和环境压力，这在南美洲的西莫齿目动物中知之甚少。本研究采用几何形态计量学方法，综合系统发育、异速生长和生态学的观点，研究了phyllotine genus Eligmodontia种间颅骨形状变化的驱动因素。作者对来自南美洲54个地区的6个Eligmodontia物种和1个外群（Calomys callosus）的151个成年标本进行了71个标志的数字化处理，并使用基于置换过程中剩余随机化（RRPP）、异速回归、主成分分析（PCA）和聚类方法的方差分析框架进行了模式分析。鳞片颅骨形状区分了所有被分析的种对，除了密切相关的毛刺e。葛根，显示有效的分类学分辨力。系统发育一致性有限，形态学聚类偏离分子关系。较大的颅骨表现出典型的哺乳动物异速缩放模式，面部拉长，脑壳收缩。气候和地理因素对颅骨变异有显著影响，北部类群与中南部类群鼓室膨胀的形态存在差异，这与季节性和全年降水模式的不同空间结构气候机制相对应。除了大球茎肥大，生态适应还包括在更干旱的栖息地中鼻子的伸长和变窄，以及在更坚硬的土壤和高咬力的食物中颅骨的坚固性增强。该研究揭示了发育限制和环境压力共同推动了eligmodontiines的颅骨多样化，建立了鳞片状颅骨形状作为有价值的分类工具，并为南美洲沙漠啮齿动物的适应进化提供了新的见解。
{"title":"Allometry and ecology shape cranial variation in phyllotine gerbil mice (Eligmodontia)","authors":"Bader H. Alhajeri","doi":"10.1016/j.jcz.2026.01.001","DOIUrl":"10.1016/j.jcz.2026.01.001","url":null,"abstract":"<div><div>Cranial diversity in desert rodents reflects evolutionary history, developmental constraints, and environmental pressures, poorly understood in South American sigmodontines. This study used geometric morphometric methods to examine drivers of interspecific cranial shape variation in the phyllotine genus <em>Eligmodontia</em>, integrating phylogenetic, allometric, and ecological perspectives. I digitized 71 landmarks on 151 adult specimens representing six <em>Eligmodontia</em> species and one outgroup (<em>Calomys callosus</em>) from 54 localities across South America, analyzing patterns using an ANOVA framework based on residual randomization in a permutation procedure (RRPP), allometric regressions, principal component analysis (PCA), and clustering methods. Scaled cranial shape distinguished all analyzed species pairs except the closely related <em>E. hirtipes</em>-<em>E. puerulus</em>, demonstrating effective taxonomic resolution. Phylogenetic congruence was limited, with morphological clustering diverging from molecular relationships. Larger crania exhibited typical mammalian allometric scaling patterns with elongated rostra (faces) and contracted braincases. Climate and geography significantly influenced cranial variation, with northern taxa differing morphologically from central-southern species in tympanic bulla inflation, corresponding to distinct spatially structured climatic regimes of seasonal versus year-round precipitation patterns. In addition to bulla hypertrophy, ecological adaptations also included nasal elongation and narrowing in more arid habitats, plus increased cranial robustness in tougher soils and for high bite-force diets. This study reveals that developmental constraints and environmental pressures jointly drive cranial diversification in eligmodontines, establishing scaled cranial shape as a valuable taxonomic tool and providing new insights into adaptive evolution in South American desert rodents.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 162-178"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-09DOI: 10.1016/j.jcz.2026.01.002
Renata M. Pertossi , Daniela Pereyra , Noelia C. Sánchez , Daniel Lauretta , Mariano I. Martinez
The genus Notocrinus appears to be part of the cryptic crinoids fauna of the Southern Ocean. In this study, we describe a new species of Notocrinus fromthe southwestern Atlantic at a depth of 1280 m. Morphological and molecular analyses were used to characterize this species. Both dataset confirm the recognition of Notocrinus messingi sp. nov. as a new species, differentiated by its hemispheric centrodorsal, radial ossicles, first division series, XL - L cirri, cirrals, pinnules, and lobulated gonopores. Phylogenetic analysis indicates that this new species belongs to a monophyletic clade that includes species from the Antarctic Peninsula and the southwestern Atlantic. Genetic comparison further highlight the close evolutionary relationships populations from the Southern Ocean and the southwestern Atlantic. These findings suggest that Antarctica and adjacent regions harbor greater biodiversity than previously recognized, with implications for future studies of evolutionary processes in these unique marine ecosystems.
{"title":"First record of Notocrinus (Echinodermata: Crinoidea) in the Atlantic: a new species challenges the limits of the Antarctic genus","authors":"Renata M. Pertossi , Daniela Pereyra , Noelia C. Sánchez , Daniel Lauretta , Mariano I. Martinez","doi":"10.1016/j.jcz.2026.01.002","DOIUrl":"10.1016/j.jcz.2026.01.002","url":null,"abstract":"<div><div>The genus <em>Notocrinus</em> appears to be part of the cryptic crinoids fauna of the Southern Ocean. In this study, we describe a new species of <em>Notocrinus</em> fromthe southwestern Atlantic at a depth of 1280 m. Morphological and molecular analyses were used to characterize this species. Both dataset confirm the recognition of <em>Notocrinus messingi</em> sp. nov. as a new species, differentiated by its hemispheric centrodorsal, radial ossicles, first division series, XL - L cirri, cirrals, pinnules, and lobulated gonopores. Phylogenetic analysis indicates that this new species belongs to a monophyletic clade that includes species from the Antarctic Peninsula and the southwestern Atlantic. Genetic comparison further highlight the close evolutionary relationships populations from the Southern Ocean and the southwestern Atlantic. These findings suggest that Antarctica and adjacent regions harbor greater biodiversity than previously recognized, with implications for future studies of evolutionary processes in these unique marine ecosystems.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 149-161"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-02-05DOI: 10.1016/j.jcz.2026.02.003
Catalina Simian , Mariela Oviedo-Diego , Rocio Palen-Pietri , Paola A. Olivero , David E. Vrech , Alfredo V. Peretti
{"title":"Sexual dimorphism, trait variability, and allometry in two camel spiders (Arachnida: Solifugae) species with different mating tactics","authors":"Catalina Simian , Mariela Oviedo-Diego , Rocio Palen-Pietri , Paola A. Olivero , David E. Vrech , Alfredo V. Peretti","doi":"10.1016/j.jcz.2026.02.003","DOIUrl":"10.1016/j.jcz.2026.02.003","url":null,"abstract":"","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 334-344"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The poorly-known, insular endemic Microhylid frogs of the genus Microhyla Tschudi, 1838 were studied in the Andaman and Nicobar Islands of India, based on a larger sample size, with which, their morphological descriptions are expanded and intra-specific sexual variation is presented. Osteology of these two species are described. Additionally, natural history observations on these species ranging from courtship, calling, breeding and larval morphology are provided for the first time. Localities where these species were recorded during this study are mapped and recommendations on their conservation status are provided.
{"title":"Expanded description and natural history of two insular Microhylid frogs of India, Microhyla chakrapanii (Pillai, 1977) and M. nakkavaram Garg, Chandrakasan, Gokulakrishnan, Chandramouli & Biju, 2022 (Anura: Microhylidae) with notes on breeding biology and larval morphology","authors":"S.R. Chandramouli , Uday Mondal , K.V. Devi Prasad","doi":"10.1016/j.jcz.2025.12.005","DOIUrl":"10.1016/j.jcz.2025.12.005","url":null,"abstract":"<div><div>The poorly-known, insular endemic Microhylid frogs of the genus <em>Microhyla</em> Tschudi, 1838 were studied in the Andaman and Nicobar Islands of India, based on a larger sample size, with which, their morphological descriptions are expanded and intra-specific sexual variation is presented. Osteology of these two species are described. Additionally, natural history observations on these species ranging from courtship, calling, breeding and larval morphology are provided for the first time. Localities where these species were recorded during this study are mapped and recommendations on their conservation status are provided.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 6-15"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-11-27DOI: 10.1016/j.jcz.2025.10.011
Alfredo E. Giraldo-Mendoza , Gustavo E. Flores , Reinhard Predel , Álvaro Zúñiga-Reinoso
The Peruvian species of Psectrascelis Solier, 1836 (Pimeliinae: Nycteliini) are revised and a phylogenetic analysis is conducted on the basis of characters of external morphology plus the male and female genitalia. Also, based on a barcode region of the COI gene, the genetic distance of some species collected specifically for this study is calculated. Based on morphology, Peruvian species of Psectrascelis form a monophyletic group named here laevigata group and constitute a well-characterized species-group inside the genus. This group comprises 11 species/subspecies, out of which six are described as new: Psectrascelis sacratus Giraldo & Flores sp. nov., Psectrascelis claudiavelizae Giraldo & Flores sp. nov., Psectrascelis laevigata huayruro Giraldo & Flores ssp. nov., Psectrascelis yanatulti Giraldo & Flores sp. nov., Psectrascelis chankas Giraldo & Flores sp. nov., and Psectrascelis altiplanicus Giraldo & Flores sp. nov. Other valid species of the group are: Psectrascelis politicollis Fairmaire, 1876, P. laevigata (Erichson, 1834), Psectrascelis marginipennis Kulzer, 1954, Psectrascelis subplanata Peña, 1994, and Psectrascelis rufipes Kulzer, 1954 stat. n. Psectrascelis escobari Peña, 1985 is synonymized under P. laevigata (Erichson, 1834), P. laevigata rufipes Kulzer, 1954 is raised to species status and a neotype is designated for Nyctelia laevigata Erichson, 1834. Psectrascelis aequalis Fairmaire, 1876 and Psectrascelis intricaticollis Fairmaire, 1876 are excluded from the Peruvian fauna. This article includes morphological descriptions or redescriptions of each of the 11 species/subspecies including features of male genitalia, complemented by an identification key and distribution maps. The external morphology and male/female genitalia are discussed to propose characters that may be informative for phylogenetic analysis. Also based on the distributional patterns a biogeographical scenario is suggested.
{"title":"Systematic revision and phylogenetic analysis of the Peruvian species of the genus Psectrascelis Solier (Coleoptera: Tenebrionidae: Nycteliini)","authors":"Alfredo E. Giraldo-Mendoza , Gustavo E. Flores , Reinhard Predel , Álvaro Zúñiga-Reinoso","doi":"10.1016/j.jcz.2025.10.011","DOIUrl":"10.1016/j.jcz.2025.10.011","url":null,"abstract":"<div><div>The Peruvian species of <em>Psectrascelis</em> Solier, 1836 (Pimeliinae: Nycteliini) are revised and a phylogenetic analysis is conducted on the basis of characters of external morphology plus the male and female genitalia. Also, based on a barcode region of the COI gene, the genetic distance of some species collected specifically for this study is calculated. Based on morphology, Peruvian species of <em>Psectrascelis</em> form a monophyletic group named here <em>laevigata</em> group and constitute a well-characterized species-group inside the genus. This group comprises 11 species/subspecies, out of which six are described as new: <em>Psectrascelis sacratus</em> Giraldo & Flores sp. nov., <em>Psectrascelis claudiavelizae</em> Giraldo & Flores sp. nov., <em>Psectrascelis laevigata huayruro</em> Giraldo & Flores ssp. nov., <em>Psectrascelis yanatulti</em> Giraldo & Flores sp. nov., <em>Psectrascelis chankas</em> Giraldo & Flores sp. nov., and <em>Psectrascelis altiplanicus</em> Giraldo & Flores sp. nov. Other valid species of the group are: <em>Psectrascelis politicollis</em> Fairmaire, 1876, <em>P. laevigata</em> (Erichson, 1834), <em>Psectrascelis marginipennis</em> Kulzer, 1954, <em>Psectrascelis subplanata</em> Peña, 1994, and <em>Psectrascelis rufipes</em> Kulzer, 1954 stat. n. <em>Psectrascelis escobari</em> Peña, 1985 is synonymized under <em>P. laevigata</em> (Erichson, 1834), <em>P. laevigata rufipes</em> Kulzer, 1954 is raised to species status and a neotype is designated for <em>Nyctelia laevigata</em> Erichson, 1834. <em>Psectrascelis aequalis</em> Fairmaire, 1876 and <em>Psectrascelis intricaticollis</em> Fairmaire, 1876 are excluded from the Peruvian fauna. This article includes morphological descriptions or redescriptions of each of the 11 species/subspecies including features of male genitalia, complemented by an identification key and distribution maps. The external morphology and male/female genitalia are discussed to propose characters that may be informative for phylogenetic analysis. Also based on the distributional patterns a biogeographical scenario is suggested.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 104-124"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145927433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Middle Eastern Blind Mole Rats (BMRs), subgenus Nannospalax, are a complex subgenus consisting of nine species described by traditional methods, consist of seven chromosomal races represented by seven different diploid chromosome numbers (2n = 48, 52, 53, 54, 56, 58, and 60), and numerous cryptic species. However, Middle East BMRs are currently referred to under a single species name (Nannospalax ehrenbergi) due to unresolved taxonomic issues. However, Middle East BMR populations in the Anatolian Peninsula, a global hotspot of diversity of Nannospalax, have not been extensively investigated in previous studies. In this study, all chromosome races and almost all populations of Middle East BMRs were examined comparatively for the first time. With an integrative taxonomic perspective, particularly based on morphology, karyology, and molecular genetics (cytb and COI fragments), we have revealed new findings on the taxonomic status and distribution of Middle East BMR species. We excluded Nannospalax ehrenbergi s. str. from the Anatolian Peninsula, and the name Nannospalax ehrenbergi was attributed to the populations immediately surrounding the type locality and to the Israeli and Palestinian populations. Nannospalax intermedius and Nannospalax ceyhanus, identified to the Southeastern Anatolian BMR populations and considered synonyms of Nannospalax ehrenbergi s. str. in previous studies, are recognized as valid biological species independent from Nannospalax ehrenbergi. In addition to these species, three new cryptic species were identified for the Anatolian Peninsula BMR populations, based primarily on mitochondrial DNA sequence differences: Nannospalaxkaryominor sp. nov. from Hatay (Yayladağ); Nannospalaxgarzanensis sp. nov., from Diyarbakır, Siirt, and Batman; and Nannospalaxcolaki sp. nov. from Gaziantep and Kilis. In Israel, Nannospalax golani-Nannospalax galili and Nannospalax carmeli-Nannospalax judaei were determined to be sister taxa. Nannospalaxehrenbergi was considered a superspecies representing the four species in Israel and one species (Nannospalax aegyptiacus) in Egypt. In summary, our study significantly advances our understanding of Middle East BMRs, increasing the number of currently recognized taxa in the subgenus Nannospalax from one (Nannospalax ehrenbergi) to nine species, including Israeli and Egyptian species.
{"title":"Taxonomic revision of the Nannospalax ehrenbergi species complex (Rodentia: Spalacidae) in Anatolian Peninsula, with description of three new species","authors":"Teoman Kankılıç , İlhan Tatyüz , Gökhan Yürümez , Tolga Kankılıç , Burcu Köse , Yüksel Coşkun , İlkay Civelek","doi":"10.1016/j.jcz.2025.12.006","DOIUrl":"10.1016/j.jcz.2025.12.006","url":null,"abstract":"<div><div>Middle Eastern Blind Mole Rats (BMRs), subgenus <em>Nannospalax</em>, are a complex subgenus consisting of nine species described by traditional methods, consist of seven chromosomal races represented by seven different diploid chromosome numbers (2n = 48, 52, 53, 54, 56, 58, and 60), and numerous cryptic species. However, Middle East BMRs are currently referred to under a single species name (<em>Nannospalax ehrenbergi</em>) due to unresolved taxonomic issues. However, Middle East BMR populations in the Anatolian Peninsula, a global hotspot of diversity of <em>Nannospalax</em>, have not been extensively investigated in previous studies. In this study, all chromosome races and almost all populations of Middle East BMRs were examined comparatively for the first time. With an integrative taxonomic perspective, particularly based on morphology, karyology, and molecular genetics (<em>cytb</em> and <em>COI</em> fragments), we have revealed new findings on the taxonomic status and distribution of Middle East BMR species. We excluded <em>Nannospalax ehrenbergi</em> s. str. from the Anatolian Peninsula, and the name <em>Nannospalax ehrenbergi</em> was attributed to the populations immediately surrounding the type locality and to the Israeli and Palestinian populations. <em>Nannospalax intermedius</em> and <em>Nannospalax ceyhanus</em>, identified to the Southeastern Anatolian BMR populations and considered synonyms of <em>Nannospalax ehrenbergi</em> s. str. in previous studies, are recognized as valid biological species independent from <em>Nannospalax ehrenbergi</em>. In addition to these species, three new cryptic species were identified for the Anatolian Peninsula BMR populations, based primarily on mitochondrial DNA sequence differences: <strong><em>Nannospalax</em> <em>karyominor</em></strong> sp. nov. from Hatay (Yayladağ); <strong><em>Nannospalax</em> <em>garzanensis</em></strong> sp. nov., from Diyarbakır, Siirt, and Batman; and <strong><em>Nannospalax</em> <em>colaki</em></strong> sp. nov. from Gaziantep and Kilis. In Israel, <em>Nannospalax golani-Nannospalax galili</em> and <em>Nannospalax carmeli-Nannospalax judaei</em> were determined to be sister taxa. <em>Nannospalax</em> <em>ehrenbergi</em> was considered a superspecies representing the four species in Israel and one species (<em>Nannospalax aegyptiacus)</em> in Egypt. In summary, our study significantly advances our understanding of Middle East BMRs, increasing the number of currently recognized taxa in the subgenus <em>Nannospalax</em> from one (<em>Nannospalax ehrenbergi</em>) to nine species, including Israeli and Egyptian species.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 16-37"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-27DOI: 10.1016/j.jcz.2026.01.010
Ha Ngoc Linh , Truong Xuan Lam , Tadashi Ishikawa , Weeyawat Jaitrong , Chi Feng Lee , Bounsanong Chouangthavy , Nguyen Dac Dai , Anh D. Nguyen , Katsuyuki Eguchi
An integrative taxonomy approach, incorporating DNA-sequence-based phylogenetic and species delimitation analyses, as well as an examination of external and genital morphology, revealed a consistently high species diversity within the genus Biasticus Stål, 1867. Based on the collections of Biasticus specimens from the Indochinese Peninsula and the surrounding areas, seventeen species were recognized. Nine of them were discovered, illustrated, and described herein as new species, namely Biasticus annamensis Ha, Truong et Ishikawa, sp. nov., Biasticus tonkinensis Ha, Truong et Ishikawa, sp. nov., Biasticus aurantiacus Ha, Truong et Ishikawa, sp. nov., Biasticus luteicorius Ha, Truong et Ishikawa, sp. nov., Biasticus flavenicollis Ha, Truong et Ishikawa, sp. nov., Biasticus nigreus Ha, Truong et Ishikawa, sp. nov., Biasticus huongsonensis Ha, Truong et Ishikawa, sp. nov., Biasticus huaikaeoensis Ha, Truong et Ishikawa, sp. nov., Biasticus thailandensis Ha, Truong et Ishikawa, sp. nov., while two species, Sphedanolestes annulipes Distant, 1903 and S. gularis Hsiao, 1979, were allocated to the genus Biasticus as Biasticus annulipes (Distant, 1903) comb. nov. and Biasticus gularis (Hsiao, 1979) comb. nov.; both of them were redescribed and illustrated.
综合分类方法，结合基于dna序列的系统发育和物种划分分析，以及外部和生殖器形态的检查，揭示了Biasticus st l， 1867属的物种多样性。根据在印度支那半岛及周边地区收集的偏蚊属标本，鉴定出17种。其中9种已被发现、说明并列为新种，分别为：annasticus Ha， Truong et Ishikawa, sp. nov., tonkinbiasticus Ha, Truong et Ishikawa, sp. nov., auantiacticus Ha, Truong et Ishikawa, sp. nov., luteicorius Ha, Truong et Ishikawa, sp. nov., Biasticus nigreus Ha, Truong et Ishikawa, sp. nov., huongsonensis Ha, Truong et Ishikawa, sp.，淮海Biasticus Ha， Truong et Ishikawa, sp. 11，泰国Biasticus Ha， Truong et Ishikawa, sp. 11，而Sphedanolestes annulipes Distant（1903）和S. gularis Hsiao（1979）两种被划归Biasticus属，作为Biasticus annulipes （Distant, 1903）梳子。11 .和古斑蝽（Hsiao, 1979）梳。11月;他们都被重新描述和说明。
{"title":"Integrative taxonomy of the genus Biasticus (Hemiptera: Heteroptera: Reduviidae) known from Vietnam and its surrounding areas","authors":"Ha Ngoc Linh , Truong Xuan Lam , Tadashi Ishikawa , Weeyawat Jaitrong , Chi Feng Lee , Bounsanong Chouangthavy , Nguyen Dac Dai , Anh D. Nguyen , Katsuyuki Eguchi","doi":"10.1016/j.jcz.2026.01.010","DOIUrl":"10.1016/j.jcz.2026.01.010","url":null,"abstract":"<div><div>An integrative taxonomy approach, incorporating DNA-sequence-based phylogenetic and species delimitation analyses, as well as an examination of external and genital morphology, revealed a consistently high species diversity within the genus <em>Biasticus</em> Stål, 1867. Based on the collections of <em>Biasticus</em> specimens from the Indochinese Peninsula and the surrounding areas, seventeen species were recognized. Nine of them were discovered, illustrated, and described herein as new species, namely <em>Biasticus annamensis</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus tonkinensis</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus aurantiacus</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus luteicorius</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus flavenicollis</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus nigreus</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus huongsonensis</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus huaikaeoensis</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, <em>Biasticus thailandensis</em> Ha, Truong et Ishikawa, <strong>sp. nov.</strong>, while two species, <em>Sphedanolestes annulipes</em> Distant, 1903 and <em>S. gularis</em> Hsiao, 1979, were allocated to the genus <em>Biasticus</em> as <em>Biasticus annulipes</em> (Distant, 1903) <strong>comb. nov.</strong> and <em>Biasticus gularis</em> (Hsiao, 1979<strong>) comb. nov.</strong>; both of them were redescribed and illustrated.</div></div>","PeriodicalId":49332,"journal":{"name":"Zoologischer Anzeiger","volume":"321 ","pages":"Pages 286-332"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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