Pub Date : 2023-08-28DOI: 10.11646/palaeoentomology.6.4.13
Simon Rosse-Guillevic, D. Kopylov, A. Rasnitsyn, G. Nam, SEUNG-HYUK Kwon, C. Jouault
Hanguksyntexis haeretica gen. et sp. nov. is the first Anaxyelidae described and illustrated from the early Albian Jinju Formation (Republic of Korea). This new taxon is attributed to the subfamily Syntexinae because of its forewing venation (i.e., 1-Rs+M forking at 1m-cu level), but differs from all other syntexines genera because of its peculiar shape and length of 2r cell (ca. twice as long as wide, not distinctly widened apically nor basally) and by its vein 6-Rs strongly curved distally towards wing margin. The discovery of this new genus challenges the clear differentiation between Anaxyelinae and Syntexinae, prompting a thorough discussion on the diagnostic value of the wing venation characters that were previously used to distinguish the two subfamilies. Consequently, the genus Cretosyntexis Rasnitsyn & Martínez-Delclòs, 2000 is transferred to Anaxyelinae.
hananguksyntexis haeretica gen. et sp. 11 .是韩国Albian晋州组早期首次被描述和图解的Anaxyelidae。该新分类群因其前翅脉(即1-Rs+M分叉在1m-cu水平)而归属于Syntexinae亚科，但不同于其他所有的Syntexinae属，因为其独特的形状和2r细胞的长度(约为长宽的两倍，顶部和基部都不明显拓宽)和其6-Rs脉向翅缘强烈弯曲。这一新属的发现对Anaxyelinae和Syntexinae之间的明确区分提出了挑战，促使人们对以前用于区分两个亚科的翼脉特征的诊断价值进行了深入的讨论。因此，Cretosyntexis Rasnitsyn属& Martínez-Delclòs, 2000被转移到Anaxyelinae。
{"title":"Blurring the limits of anaxyelid subfamilies: a new genus and species (Hymenoptera: Anaxyelidae) from the Albian of the Republic of Korea","authors":"Simon Rosse-Guillevic, D. Kopylov, A. Rasnitsyn, G. Nam, SEUNG-HYUK Kwon, C. Jouault","doi":"10.11646/palaeoentomology.6.4.13","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.4.13","url":null,"abstract":"Hanguksyntexis haeretica gen. et sp. nov. is the first Anaxyelidae described and illustrated from the early Albian Jinju Formation (Republic of Korea). This new taxon is attributed to the subfamily Syntexinae because of its forewing venation (i.e., 1-Rs+M forking at 1m-cu level), but differs from all other syntexines genera because of its peculiar shape and length of 2r cell (ca. twice as long as wide, not distinctly widened apically nor basally) and by its vein 6-Rs strongly curved distally towards wing margin. The discovery of this new genus challenges the clear differentiation between Anaxyelinae and Syntexinae, prompting a thorough discussion on the diagnostic value of the wing venation characters that were previously used to distinguish the two subfamilies. Consequently, the genus Cretosyntexis Rasnitsyn & Martínez-Delclòs, 2000 is transferred to Anaxyelinae.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48413604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.11646/palaeoentomology.6.4.14
Mathieu Boderau, V. Ngô-Muller, A. Nel, R. Garrouste
Myanmarvelia pankowskiorum gen. et sp. nov., is the first occurrence of the aquatic bug family Mesoveliidae in the mid-Cretaceous Kachin amber. This new taxon is described and illustrated based on a well-preserved female specimen. Although numerous morphological characters confirm its placement in the Mesoveliidae its position within the family is unclear. The presence of claws inserted pre-apically and head extended in front of eyes would suggest a placement in the Mesoveliinae but we consider it putative. The fossil record of this family is very poor, ranging between the late Jurassic and the Miocene.
{"title":"The first water treader (Heteroptera: Mesoveliidae) from the mid-Cretaceous Kachin amber","authors":"Mathieu Boderau, V. Ngô-Muller, A. Nel, R. Garrouste","doi":"10.11646/palaeoentomology.6.4.14","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.4.14","url":null,"abstract":"Myanmarvelia pankowskiorum gen. et sp. nov., is the first occurrence of the aquatic bug family Mesoveliidae in the mid-Cretaceous Kachin amber. This new taxon is described and illustrated based on a well-preserved female specimen. Although numerous morphological characters confirm its placement in the Mesoveliidae its position within the family is unclear. The presence of claws inserted pre-apically and head extended in front of eyes would suggest a placement in the Mesoveliinae but we consider it putative. The fossil record of this family is very poor, ranging between the late Jurassic and the Miocene.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49503763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.11646/palaeoentomology.6.4.6
A. Cannell, A. Nel
Adult Odonatoptera are among the most efficient flying predators. They have retained many physical characteristics over an immense period stretching from the Carboniferous to the present. Over this time they have greatly varied in size and mass, as shown in the fossil record and in particular by the length, shape, and structure of their wings. A fossil of Meganeurites gracilipes indicates that this large ‘griffenfly’ had a ‘hawker’ hunting behavior similar to certain extant species, with long periods of flight in which power, thermoregulation, and respiration would therefore tend to a ‘steady state’ equilibrium, allowing oxygen requirements and tracheole volumes to be projected and compared to extant ‘hawkers’. Comparing these values with standard pO2 models allows paleo-atmospheric density estimates to be derived. The results suggest that paleo-air pressure has varied from over two bars in the Late Carboniferous, Late Permian, and Middle to Late Jurassic, with lower values in the Early Triassic and Early Jurassic.
{"title":"Paleo-air pressures and respiration of giant Odonatoptera from the Late Carboniferous to the Early Cretaceous","authors":"A. Cannell, A. Nel","doi":"10.11646/palaeoentomology.6.4.6","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.4.6","url":null,"abstract":"Adult Odonatoptera are among the most efficient flying predators. They have retained many physical characteristics over an immense period stretching from the Carboniferous to the present. Over this time they have greatly varied in size and mass, as shown in the fossil record and in particular by the length, shape, and structure of their wings. A fossil of Meganeurites gracilipes indicates that this large ‘griffenfly’ had a ‘hawker’ hunting behavior similar to certain extant species, with long periods of flight in which power, thermoregulation, and respiration would therefore tend to a ‘steady state’ equilibrium, allowing oxygen requirements and tracheole volumes to be projected and compared to extant ‘hawkers’. Comparing these values with standard pO2 models allows paleo-atmospheric density estimates to be derived. The results suggest that paleo-air pressure has varied from over two bars in the Late Carboniferous, Late Permian, and Middle to Late Jurassic, with lower values in the Early Triassic and Early Jurassic.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49014200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.11646/palaeoentomology.6.4.12
Maximilian G. Pankowski
Two new species of the family Cantharidae from Baltic amber are described and illustrated: Sucinorhagonycha fabrizioi sp. nov. (Cantharinae, Cacomorphocerini) and Cantharis (Cantharis) samsocki sp. nov. (Cantharinae, Cantharini). The former is particularly notable because it has 12 antennomeres, a characteristic that is relatively rare among the world’s extant beetles, particularly in soldier beetles. This fascinating characteristic and why it may have evolved are explored here.
{"title":"Two new species of soldier beetles (Coleoptera: Cantharidae) from Eocene Baltic amber, including one with a rare type of antennae","authors":"Maximilian G. Pankowski","doi":"10.11646/palaeoentomology.6.4.12","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.4.12","url":null,"abstract":"Two new species of the family Cantharidae from Baltic amber are described and illustrated: Sucinorhagonycha fabrizioi sp. nov. (Cantharinae, Cacomorphocerini) and Cantharis (Cantharis) samsocki sp. nov. (Cantharinae, Cantharini). The former is particularly notable because it has 12 antennomeres, a characteristic that is relatively rare among the world’s extant beetles, particularly in soldier beetles. This fascinating characteristic and why it may have evolved are explored here.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44159653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.11646/palaeoentomology.6.4.9
C. Haug, K. L. Tun, Tin LAY MON, Wai Wai Hnin, J. Haug
The group Neuropteriformia (beetles, lacewings, etc.) is today very species-rich, but also has a good fossil record in the Mesozoic. Amber provides not only adults, but also fossil larvae; some of these fossil neuropteriformian larvae have very unusual morphologies not seen in the modern fauna. We here report an unusual new fossil neuropteriformian larva. The mouthparts form a beak. Fossil larvae with similar mouthparts are known, and it seems that this new larva is a representative of the species ?Partisaniferus edjarzembowskii. The new larva, unlike the already known ones, has a large and inflated trunk. Based on comparison with extant larvae, such an inflated trunk should be considered physogastric. The new larva is only the second case of physogastry in fossil holometabolan larvae. Also early larvae of this species are known. The strong difference between the different larval stages give reason to interpret the ontogeny hypermetamorphic. Also this phenomenon is in fact very rare in the fossil record; most earlier candidates remain assumptions without further substantiation. Physogastry in larvae is often coupled to a mode of live in confined spaces, for a fossil preserved in amber this may mean living inside wood. Feeding mode might have been predatory, but could also have been feeding on fungi.
{"title":"The strange holometabolan beak larva from about 100 million years old Kachin amber was physogastric and possibly wood-associated","authors":"C. Haug, K. L. Tun, Tin LAY MON, Wai Wai Hnin, J. Haug","doi":"10.11646/palaeoentomology.6.4.9","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.4.9","url":null,"abstract":"The group Neuropteriformia (beetles, lacewings, etc.) is today very species-rich, but also has a good fossil record in the Mesozoic. Amber provides not only adults, but also fossil larvae; some of these fossil neuropteriformian larvae have very unusual morphologies not seen in the modern fauna. We here report an unusual new fossil neuropteriformian larva. The mouthparts form a beak. Fossil larvae with similar mouthparts are known, and it seems that this new larva is a representative of the species ?Partisaniferus edjarzembowskii. The new larva, unlike the already known ones, has a large and inflated trunk. Based on comparison with extant larvae, such an inflated trunk should be considered physogastric. The new larva is only the second case of physogastry in fossil holometabolan larvae. Also early larvae of this species are known. The strong difference between the different larval stages give reason to interpret the ontogeny hypermetamorphic. Also this phenomenon is in fact very rare in the fossil record; most earlier candidates remain assumptions without further substantiation. Physogastry in larvae is often coupled to a mode of live in confined spaces, for a fossil preserved in amber this may mean living inside wood. Feeding mode might have been predatory, but could also have been feeding on fungi.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48792343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.11646/palaeoentomology.6.4.7
A. Roza, Dominik Kusy, Z. Lian, Robin Kundrata
Elateroidea superfamily holds a huge diversity, morphological variation and a myriad of habitat specializations. The presence of bioluminescence and paedomorphosis renders the group as an interesting model for several studies. The “lampyroid” clade manifests both features, in a variety of light displays and body-forms, but the small fossil records hampers any advance in understanding the origin of these characteristics, as well as the biogeographic history of the group. We present here the description of a new fossil species, Cretocydistus wittmeri gen. et sp. nov. from the mid-Cretaceous of northern Myanmar, the first fossil of the family Phengodidae. We putatively place the genus in the subfamily Cydistinae, which extant species are distributed in Asia Minor, the Levant, and Iran. We also discuss how the discovery of this fossil taxa influences the study of the family and the “lampyroid” clade evolutionary history and biogeography.
{"title":"The first Phengodidae fossil (Coleoptera: Elateroidea): Cretocydistus wittmeri gen. et sp. nov. from the mid-Cretaceous Burmese amber","authors":"A. Roza, Dominik Kusy, Z. Lian, Robin Kundrata","doi":"10.11646/palaeoentomology.6.4.7","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.4.7","url":null,"abstract":"Elateroidea superfamily holds a huge diversity, morphological variation and a myriad of habitat specializations. The presence of bioluminescence and paedomorphosis renders the group as an interesting model for several studies. The “lampyroid” clade manifests both features, in a variety of light displays and body-forms, but the small fossil records hampers any advance in understanding the origin of these characteristics, as well as the biogeographic history of the group. We present here the description of a new fossil species, Cretocydistus wittmeri gen. et sp. nov. from the mid-Cretaceous of northern Myanmar, the first fossil of the family Phengodidae. We putatively place the genus in the subfamily Cydistinae, which extant species are distributed in Asia Minor, the Levant, and Iran. We also discuss how the discovery of this fossil taxa influences the study of the family and the “lampyroid” clade evolutionary history and biogeography.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42333906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-28DOI: 10.11646/palaeoentomology.6.4.10
J. LaPolla
The early Oligocene (ca. 32.0 Ma) Canyon Ferry Reservoir deposit is known to contain an extraordinary number of well-preserved plant and animal fossils. Among those are 111 fossil ant specimens that were examined and assigned to five genera: Dolichoderus, Liometopum, Camponotus, Lasius, and Manica from three subfamilies: Dolichoderinae, Formicinae, and Myrmicinae. Two new fossil species are described. Liometopum greenwalti sp. nov. is the third fossil species known from this genus in North America and is morphologically distinct from the other two fossil species that are known from the Florissant deposit. The three fossil Liometopum species are compared to the three extant North American species. Manica iviei sp. nov. is the first fossil species in this genus known from North America and only the second fossil species described. This species possesses a broad ventral postpetiolar process which among North American extant species is only present in Manica hunteri. The Canyon Ferry ants represent the only definitively Oligocene-aged fossil deposit that contains ants in North America and therefore offer a unique view into a time when the modern-day ant communities of the continent were emerging.
{"title":"Fossil ants (Hymenoptera: Formicidae) of the early Oligocene Canyon Ferry Reservoir deposit","authors":"J. LaPolla","doi":"10.11646/palaeoentomology.6.4.10","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.4.10","url":null,"abstract":"The early Oligocene (ca. 32.0 Ma) Canyon Ferry Reservoir deposit is known to contain an extraordinary number of well-preserved plant and animal fossils. Among those are 111 fossil ant specimens that were examined and assigned to five genera: Dolichoderus, Liometopum, Camponotus, Lasius, and Manica from three subfamilies: Dolichoderinae, Formicinae, and Myrmicinae. Two new fossil species are described. Liometopum greenwalti sp. nov. is the third fossil species known from this genus in North America and is morphologically distinct from the other two fossil species that are known from the Florissant deposit. The three fossil Liometopum species are compared to the three extant North American species. Manica iviei sp. nov. is the first fossil species in this genus known from North America and only the second fossil species described. This species possesses a broad ventral postpetiolar process which among North American extant species is only present in Manica hunteri. The Canyon Ferry ants represent the only definitively Oligocene-aged fossil deposit that contains ants in North America and therefore offer a unique view into a time when the modern-day ant communities of the continent were emerging.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41575422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.11646/palaeoentomology.6.3.13
Maximilian G. Pankowski, F. Fanti
We describe and illustrate six new species of the family Cantharidae from Baltic amber: Sucinorhagonycha maryae sp. nov. (Cantharinae, Cacomorphocerini), Podistra madelineae sp. nov. (Cantharinae, Cantharini), Malthinus (Malthinus) karenpankowskiae sp. nov. (Malthininae, Malthinini), Malthinus (Malthinus) pauljohnsoni sp. nov. (Malthininae, Malthinini), Malthodes (Libertimalthodes) betseyae sp. nov. (Malthininae, Malthodini) and Malthodes (Malthodes) greenwalti sp. nov. (Malthininae, Malthodini). These new taxa add to the astonishing palaeodiversity documented in Baltic amber, demonstrating the wide range of organisms thriving in European forests and wooded areas during the Eocene. Extant species of Malthodes, Malthinus and Podistra also provide important clues to how these extinct taxa lived, fed and reproduced some 35–40 million years ago.
{"title":"Six new species of fossil soldier beetles (Coleoptera: Cantharidae) from Eocene Baltic amber","authors":"Maximilian G. Pankowski, F. Fanti","doi":"10.11646/palaeoentomology.6.3.13","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.3.13","url":null,"abstract":"We describe and illustrate six new species of the family Cantharidae from Baltic amber: Sucinorhagonycha maryae sp. nov. (Cantharinae, Cacomorphocerini), Podistra madelineae sp. nov. (Cantharinae, Cantharini), Malthinus (Malthinus) karenpankowskiae sp. nov. (Malthininae, Malthinini), Malthinus (Malthinus) pauljohnsoni sp. nov. (Malthininae, Malthinini), Malthodes (Libertimalthodes) betseyae sp. nov. (Malthininae, Malthodini) and Malthodes (Malthodes) greenwalti sp. nov. (Malthininae, Malthodini). These new taxa add to the astonishing palaeodiversity documented in Baltic amber, demonstrating the wide range of organisms thriving in European forests and wooded areas during the Eocene. Extant species of Malthodes, Malthinus and Podistra also provide important clues to how these extinct taxa lived, fed and reproduced some 35–40 million years ago.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43653500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.11646/palaeoentomology.6.3.14
A. Nel, Meicai Wei, Gengyun Niu, R. Garrouste, C. Jouault
Oligomonoctenus neytiriae gen. et sp. nov., the second fossil representative of the family Diprionidae from the uppermost Oligocene of Aix-en-Provence, France, is described on the basis of a well-preserved compression fossil. It is compared to the other extant and fossil diprionid genera. Its morphology and wing venation support placement in the subfamily Monocteninae. Paleomonoctenus patriciae, the other diprionid described from the same paleolake, also belongs to the Monocteninae. On the other hand, the Eocene-Lower Oligocene genus Eodiprion would be attributable to the Diprioninae but needs revision. This discovery suggests that the two diprionid subfamilies were already present and diversified during the Eocene-Oligocene.
{"title":"Description of a new fossil genus of conifer sawfly (Hymenoptera: Diprionidae) revealed by UV light","authors":"A. Nel, Meicai Wei, Gengyun Niu, R. Garrouste, C. Jouault","doi":"10.11646/palaeoentomology.6.3.14","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.3.14","url":null,"abstract":"Oligomonoctenus neytiriae gen. et sp. nov., the second fossil representative of the family Diprionidae from the uppermost Oligocene of Aix-en-Provence, France, is described on the basis of a well-preserved compression fossil. It is compared to the other extant and fossil diprionid genera. Its morphology and wing venation support placement in the subfamily Monocteninae. Paleomonoctenus patriciae, the other diprionid described from the same paleolake, also belongs to the Monocteninae. On the other hand, the Eocene-Lower Oligocene genus Eodiprion would be attributable to the Diprioninae but needs revision. This discovery suggests that the two diprionid subfamilies were already present and diversified during the Eocene-Oligocene.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49207870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.11646/palaeoentomology.6.3.11
C. Bartel, J. Dunlop
The first eupnoid harvestmen (Opiliones: Eupnoi) are described from the mid-Cretaceous (ca. 99 Ma) Burmese amber (Kachin State, northern Myanmar). All four living suborders of Opiliones are now known from this amber source. Tyrannobunus aculeus gen. et sp. nov. preserves a unique combination of characters including spiny legs, large eyes in an anterior position and a relatively undifferentiated penis. These characters may be plesiomorphic for Eupnoi and are consistent with the hypothesis that the new species belongs to a relatively basal lineage within the suborder. Two more, probably immature, eupnoids are described and figured. They probably belong to the eupnoid family Phalangiidae, but are not formally named at this stage. Additionally, a new Burmese amber specimen is assigned here to Halitherses grimaldii (?) Giribet & Dunlop, 2005 (Dyspnoi: Halithersidae). It reveals for the first time a (male?) cheliceral apophysis and thus offers the first evidence for secondary sexual dimorphism in this extinct family.
在缅甸北部克钦邦的中白垩世(约99 Ma)缅甸琥珀中发现了第一批具具的琥珀(Opiliones: Eupnoi)。所有四个现存的欧皮亚目现在都是从这个琥珀源中已知的。黑斑暴龙(Tyrannobunus acleus gen. et sp. 11 .)保留了一些独特的特征组合，包括带刺的腿、位于前方的大眼睛和相对未分化的阴茎。这些特征可能是半胚性的，并与新物种属于亚目中相对基础谱系的假设相一致。另外两种，可能是未成熟的，被描述和描绘。它们可能属于蝴蝶兰科，但在这个阶段没有正式命名。此外，一个新的缅甸琥珀标本被分配给Halitherses grimaldii (?)Giribet & Dunlop, 2005(精神障碍:海蝇科)。它首次揭示了一个(雄性?)化学突突，从而为这个已灭绝的家族提供了第二性二态性的第一个证据。
{"title":"First eupnoid harvestmen (Arachnida: Opiliones: Eupnoi) from mid-Cretaceous Kachin amber, with notes on sexual dimorphism in Halitherses grimaldii (Arachnida: Opiliones: Dyspnoi)","authors":"C. Bartel, J. Dunlop","doi":"10.11646/palaeoentomology.6.3.11","DOIUrl":"https://doi.org/10.11646/palaeoentomology.6.3.11","url":null,"abstract":"The first eupnoid harvestmen (Opiliones: Eupnoi) are described from the mid-Cretaceous (ca. 99 Ma) Burmese amber (Kachin State, northern Myanmar). All four living suborders of Opiliones are now known from this amber source. Tyrannobunus aculeus gen. et sp. nov. preserves a unique combination of characters including spiny legs, large eyes in an anterior position and a relatively undifferentiated penis. These characters may be plesiomorphic for Eupnoi and are consistent with the hypothesis that the new species belongs to a relatively basal lineage within the suborder. Two more, probably immature, eupnoids are described and figured. They probably belong to the eupnoid family Phalangiidae, but are not formally named at this stage. Additionally, a new Burmese amber specimen is assigned here to Halitherses grimaldii (?) Giribet & Dunlop, 2005 (Dyspnoi: Halithersidae). It reveals for the first time a (male?) cheliceral apophysis and thus offers the first evidence for secondary sexual dimorphism in this extinct family.","PeriodicalId":53179,"journal":{"name":"Palaeoentomology","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41929515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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