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Three species of the spider family Philodromidae are reported from the south of China. A new genus, Sinodromus gen. nov., is described from Jiangxi, Fujian, and Hunan Provinces. It can be distinguished from other genera of Philodromidae by the tegular apophysis of the palp and the cymbial process, as well as by its uniquely striped abdomen. The type species, S.fujianensis sp. nov., and a second species, S.perbrevis sp. nov., are described and illustrated; these species occur in bamboo forests in hilly areas. Additionally, the female of Philodromusguiyang Long & Yu, 2022 is described for the first time from Jiangxi and Hunan Provinces. All species are illustrated with SEM micrographs, and their distributions are mapped.

Twenty-one new species of jumping spiders from five provinces of South China are described: Cheliceroidesjinxini sp. nov. (♂), Dendroiciusqiong sp. nov. (♂♀), Iciusdeergong sp. nov. (♂♀), Iruraqiuhangi sp. nov. (♂♀), I.yarlungzangbo sp. nov. (♂♀), Mintoniashiwandashan sp. nov. (♂), Myrmarachnekuan sp. nov. (♂♀), Nandiciusxiefengi sp. nov. (♂♀), Pancoriusmedog sp. nov. (♀), P.yingjiang sp. nov. (♂♀), Piranthusmaddisoni sp. nov. (♂♀), Simaethahainan sp. nov. (♂♀), Stertiniuslhoba sp. nov. (♂♀), Synagelideskongmingi sp. nov. (♂♀), S.xuandei sp. nov. (♂♀), S.yunchangi sp. nov. (♂♀), S.yidei sp. nov. (♂), S.zilongi sp. nov. (♂♀), Yaginumaelladaweishan sp. nov. (♂♀), Y.moinba sp. nov. (♂♀), and Y.pingbian sp. nov. (♂♀). Nepalicius Prószyński, 2016, syn. nov. is proposed as a junior synonym of Okinawicius Prószyński, 2016. Three new combinations are proposed: O.nepalicus (Andreeva, Hęciak & Prószyński, 1984), comb. nov. and O.seychellensis (Wanless, 1984), comb. nov. transferred from Nepalicius, and O.daoxianensis (Peng, Gong & Kim, 2000), comb. nov. transferred from Philaeus Thorell, 1869. The unknown females of O.nepalicus, Padillothoraxexilis (Cao & Li, 2016) and Silerhanoicus Prószyński, 1985 are described for the first time. Distribution maps of the studied specimens are also provided.

An annotated checklist of the Sarcophagidae of Jamaica is presented based on material collected from 2018 to 2024, supplemented with specimens in museum collections as well as literature records. The checklist comprises 45 species from 21 genera, of which 23 species from 15 genera were collected during the present study and identified based on male terminalia. The following species are recorded from Jamaica for the first time: Bahamiolaorbitalis Dodge, Peckia (Sarcodexia) dominicana (Lopes), Tapacuramariarum Tibana & Lopes, and Lepidodexia (Harpagopyga) diversipes (Coquillet).

In this study, we describe and illustrate a new species of the genus Laena Dejean, 1821, Laenacostata sp. nov., which was collected in Micangshan Nature Reserve of Sichuan Province, China. Additionally, the COI mitochondrial gene was sequenced to provide additional evidence for this new species' validity. The results of phylogenetic analyses suggest that this new species is sister to L.maowenica Schawaller, 2008. Furthermore, an updated key to Laena species from Sichuan Province is provided.

Beetles (Coleoptera) have been surveyed in Armenia and other Transcaucasian countries since the first half of the 19^th century. Based on the literature reports and our new data, available information was gathered on the occurrence in Armenia of one of the beetle families, the ladybirds (Coccinellidae). 84 species of Coccinellidae have been reported from this country in the literature and/or collected during our recent field survey. Two of them, Anatisocellata (Linnaeus, 1758) and Tytthaspissedecimpunctata (Linnaeus, 1761), have not been reported in the literature but were present in our field samples, so they can be considered species new to Armenia, and signify new country records. In addition to the 84 species unambiguously reported from Armenia, 14 were broadly reported from larger regions that include that country (Transcaucasia, the Caucasus) or its parts (the Araks valley). The recognized Coccinellidae fauna of Armenia is slightly poorer than the faunas of other Transcaucasian countries (Azerbaijan and Georgia): there are 92 species currently known to occur in Azerbaijan and 90 species in Georgia. Interestingly, the Armenian fauna contains more Caucasian endemics (10 species) and fewer non-natives (1 species) than the faunas of Azerbaijan (4 endemics and 2 non-natives) and Georgia (6 endemics and 6 non-natives).

Six new species of the genus Paederus Fabricius, 1775 from China are described: P.chentangus sp. nov. (Xizang: Chentang), P.mirus sp. nov. (Xizang: Xiayadong), P.songi sp. nov. (Chongqing: Polaoxiang), P.trispinosus sp. nov. (Hubei: Houhe), P. (Harpopaederus) yeisp. nov. (Hubei: Cuijia'ao), and P.zhaoi sp. nov. (Zhejiang: Majian). A key to the micropterous Paederus species of mainland China is given.

The order Polycladida (Platyhelminthes) in Mexico has historically received limited attention from researchers, primarily due to challenges associated with its low detectability and the scarcity of specialists. This study addresses part of the gap by conducting a comprehensive assessment of polyclad diversity in the southern Gulf of Mexico. Our investigation revealed a total of 27 distinct species, belonging to 17 genera and 12 families, within the suborders Cotylea and Acotylea. Our findings include the identification of 17 species previously undocumented in the Gulf of Mexico. This represents a significant expansion of the region's known polyclad biodiversity. By revising the polyclad records in the Gulf of Mexico, the known species count has increased from 31 to 50. Furthermore, our research unveiled the presence of two new species, Stylochoplanasisalensis sp. nov. and Emprosthopharynxhartei sp. nov., also marking the first time a species of the genus Emprosthopharynx has been reported for the Atlantic coast of the Americas.

In this study, the complete mitochondrial genome of Lepidocephalichthysberdmorei was first determined by the primer walking sequence method. The complete mitochondrial genome was 16,574 bp in length, including 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (rRNA) genes, and a control region (D-loop). The gene arrangement pattern was identical to that of other teleosts. The overall base composition was 29.9% A, 28.5% T, 25.5% C, and 16.1% G, with an A+T bias of 58.4%. Furthermore, phylogenetic analyses were conducted based on 13 PCGs from the mitochondrial genomes of 18 cobitid species using with three different methods (Neighbor-joining, Maximum likelihood, and Bayesian inference). All methods consistently showed that the four species of the genus Lepidocephalichthys form a monophyletic group. This study would provide effective molecular information for the Lepidocephalichthys species as well as novel genetic marker for the study of species identification.

The final instar larva of the rare species Platycnemisphasmovolans Hämäläinen, 2003 is described and illustrated here for the first time, including a new distribution record from Vietnam. The larva of P.phasmovolans differs from that of congeneric species by distinct morphological features, including the presence of four setae on the palpal lobe of the labium, the presence of lateral spines on abdominal S5-9, and a long terminal filament on the caudal lamella. We also provide a key to species for the known larvae of the subfamily Platycnemidinae in the Sino-Japanese and Oriental regions.

A fundamental prerequisite for understanding and protecting biodiversity is the construction of a high-quality faunal database. The primary objective of this study was to address knowledge gaps in the biodiversity of the family Psychodidae in Estonia. Faunistic data on 45 species of moth flies (Diptera: Psychodidae) from Estonia are presented, including 30 new country-records. Sixteen species are considered important for nature conservation. An updated checklist of the family, comprising 71 species, is provided for the Baltic countries. Habitus photographs of selected Estonian species are also included.