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Sunday, May 26th, 2024
| Time | Event | ||||||||
| 2:22a | [Entomology • 2024] Aegus occidentalis • A New Species of Aegus Macleay, 1819 (Coleoptera: Lucanidae: Lucaninae: Aegini) from Thailand with Checklist of the Genus Species from the Country
Abstract In this study, Aegus occidentalis Pathomwattananurak & Jiaranaisakul, new species is described from Tenasserim Range, western Thailand. Its habitus and genitalia are illustrated and compared with its closest relatives for both sexes. A checklist of the species of Aegus Macleay, 1819 (Coleoptera: Lucanidae: Lucaninae: Aegini) from Thailand is provided, which includes three new country records: Aegus babai Nagai, 1994, A. insignis Nagel, 1941 and A. laticollis Arrow, 1943. Additionally, a new junior synonym, Aegus chelifer Macleay, 1819 = Aegus chelifer crassodontus Bomans, 1992 new synonym, is proposed. Distribution maps of Aegus species in Thailand are also provided. Coleoptera, Stag beetle, Aegini, Scarabaeoidea, Indochina, Tenasserim, Oriental region  Aegus occidentalis Pathomwattananurak & Jiaranaisakul, new species   Wuttipon Pathomwattananurak and Kawin Jiaranaisakul. 2024. A New Species of Aegus Macleay, 1819 (Coleoptera: Lucanidae: Lucaninae: Aegini) from Thailand with Checklist of the Genus Species from the Country. Zootaxa. 5453(3); 341-358. DOI: 10.11646/zootaxa.5453.3.2 ด้วงคีมร่องสกุล ???????????????????? ในประเทศไทย 10 ชนิด ได้แก่ ???????????????????? ????????????????????????????????????????  | ||||||||
| 2:24a | [Herpetology • 2024] Rhacophorus qiongica • Underestimated Species Diversity within the Rhacophorus rhodopus and R. bipunctatus complexes (Anura: Rhacophoridae), with A Description of A New Species from Hainan, China
Abstract Taxonomy and species boundaries within the Rhacophorus rhodopus and Rhacophorus bipunctatus complexes are very confusing. In this study, we attempt to delimit the species boundaries and test the currently accepted taxonomic assignments within these two complexes based on newly collected samples and previously published data across their distributions. Phylogenetic analyses revealed that the R. rhodopus and R. bipunctatus complexes consisted of six distinct clades (labeled A‒F) that diverged from each other by genetic distances (p-distance) ranging from 5.3% to 9.2% in 16S rRNA sequences, and accordingly analyses of species delimitation placed them into six species, of which three correspond to known species (R. rhodopus, R. bipunctatus, and R. napoensis) and three represent different cryptic species. Rhacophorus rhodopus (Clade C) is distributed in southern Yunnan, China, northern Laos, and northern and central Thailand; R. bipunctatus (Clade F) is distributed in northeastern India and western and northern Myanmar; and R. napoensis (Clade B) is distributed in Guangxi, China and northern Vietnam. Based on both molecular and morphological evidence, we described the clade consisting of samples from Hainan, China and central Vietnam (Clade A) as a new species, Rhacophorus qiongica sp. nov. There are two cryptic species requiring additional morphological studies: one only contains samples from Motuo, Xizang, China (Clade E), and the other is distributed in western Yunnan, China, central Myanmar, central Thailand, and Malaysia (Clade D). Additionally, our results supported the idea that some old GenBank sequences of R. reinwardtii need to be updated with the correct species name. Key Words: Cryptic species, Hainan, Rhacophorus qiongica sp. nov., Species complex, Species delimitation
Rhacophorus qiongica sp. nov. Etymology: The specific name qiongica is derived from Qiong (琼), referring to Hainan, China, and meaning good and beautiful in Chinese. The specific name means that this species is very beautiful, and in China, it is distributed in Hainan. We suggest the English common name “Hainan Flying Frog” and the Chinese common name “琼树蛙 (Qióng Shù Wā)”. Diagnosis: The new species is assigned to Rhacophorus by the presence of intercalary cartilage between terminal and penultimate phalanges of digits, terminal phalanges of fingers and toes Y-shaped, the tip of the digits expanded into disks with circummarginal grooves, fingers webbed, tarsal projections present, dermal folds along the forearm and tarsus present, and a horizontal pupil (Jiang et al. 2019). Rhacophorus qiongica sp. nov. differs from its congeners by a combination of the following characters: 1) medium body size (adult males SVL 35.1‒38.2 mm); 2) dorsal surface red brown; 3) entire web between fingers and toes; 4) webbing between toes purely scarlet; 5) small black blotches on flank; 6) bands on limbs distinct; 7) throat smooth; 8) absence of dermal appendage on snout tip; 9) absence of small black spots on head sides; 10) palm smooth without small tubercles; and 11) tibiotarsal articulation reaching beyond eye. Shangjing Tang, Fanrong Xiao, Shuo Liu, Lijun Wang, Guohua Yu and Lina Du. 2024. Underestimated Species Diversity within the Rhacophorus rhodopus and Rhacophorus bipunctatus complexes (Anura, Rhacophoridae), with A Description of A New Species from Hainan, China. Zoosystematics and Evolution. 100(2): 625-643. DOI: 10.3897/zse.100.118879 | ||||||||
| 2:32a | [Mollusca • 2024] Moellendorffia gulinensis, M. wuchaoi, & Moellendorffiella yifengi • New Species of Moellendorffia Ancey, 1887 and Moellendorffiella Pilsbry, 1905 (Gastropoda: Eupulmonata: Camaenidae) from China
Abstract Two new species of Moellendorffia Ancey, 1887 and one new species of Moellendorffiella Pilsbry, 1905 are described from China, namely Moellendorffia gulinensis sp. nov. from southeastern Sichuan Province, Moellendorffia wuchaoi sp. nov. from eastern Hainan Island, and Moellendorffiella yifengi sp. nov. from southeastern Yunnan Province. Shell characters and habitats are illustrated, and a distribution map of the new species is provided. Moellendorffia trisinuata trisinuata and Moellendorffiella erdmanni are re-examined and illustrated using newly collected specimens. The generic diagnosis of Moellendorffiella is supplemented. Key words. China, taxonomy, new species, systematics, snail
Ran-Xi Lin and Lu Qiu. 2024. New Species of Moellendorffia Ancey, 1887 and Moellendorffiella Pilsbry, 1905 from China (Gastropoda: Eupulmonata: Camaenidae). Journal of Conchology. 45(1); DOI. doi.org/10.61733/jconch/4506 | ||||||||
| 2:41p | [Crustacea • 2017] Heteromysis cancelli, H. fosteri & H. octopodis • Three New Species of Heteromysis (Mysida: Mysidae: Heteromysini) from the Cape Peninsula, South Africa, with first documentation of a mysid-cephalopod association
Abstract Faunistic studies in sublittoral and littoral marine habitats on the Cape Peninsula, South Africa, have yielded three new species belonging to the genus Heteromysis, subgenus Heteromysis: H. cancelli sp. n. associated with the diogenid hermit crab Cancellus macrothrix Stebbing, 1924, and H. fosteri sp. n. extracted from ‘empty’ urchin and gastropod shells. The first documented mysid-cephalopod association is reported for H. octopodis sp. n. which was found in dens occupied by Octopus vulgaris Cuvier, 1797, but was also captured from tide pools. The three new species differ from previously known E. Atlantic species, among other characters, by a single spine on the endopods of uropods in combination with large cornea and absence of median sternal processes on thoracic somites. They are also characterized by a white stripe along the dorso-lateral terminal margin of the eyestalks in living specimens. The new species appear quite similar to each other, but are distinguished by different depths of the telson cleft, different distributions of spines on the lateral margins of the telson, different numbers of segments on thoracic endopod 4, and by differently modified setae on the carpus of the third thoracic endopod, as well as on the carpopropodus of the fourth endopod. An updated key to the species of Heteromysis known from the E. Atlantic is given. Keywords: Crustacea, hermit crab association, octopus association, ectocommensals, taxonomy, key to species, SE. Atlantic
Karl J. Wittmann and Charles L. Griffiths. 2017. Three New Species of Heteromysis (Mysida, Mysidae, Heteromysini) from the Cape Peninsula, South Africa, with first documentation of a mysid-cephalopod association. ZooKeys. 685; 15-47. DOI: 10.3897/zookeys.685.13890 | ||||||||
| 2:48p | [Invertebrate • 2024] Clavelina ossipandae • A strange-looking New Species of Colonial Ascidians in the Genus Clavelina (Tunicata: Ascidiacea) off the coast of Kumejima Island, Japan
Abstract An unidentified colonial ascidian called gaikotsu-panda-hoya in Japanese, literally meaning ‘skeleton panda ascidian,’ has been attracting SCUBA divers’ attention for the past few years since its strange appearance was introduced on the Internet by a diving shop in Kumejima Island, Japan. To confirm the taxonomic status of this species, fresh samples were collected from a diving point off the coast of Kumejima Island. Our morphological examination revealed that they represent a new species, herein described as Clavelina ossipandae sp. nov., which can be distinguished from 44 congeners in the genus Clavelina Savigny, 1816 by the combination of the following seven characteristics: i) colony consisting of completely free zooids, ii) zooids up to 20 mm in length, iii) in the living state, zooids transparent, with laterally elongated white patch between oral and atrial siphons, as well as four black markings, one between siphons, one mid-dorsally, and the other two situated laterally in a pair on the anterior part of the body, iv) transverse vessels white, v) endostyle black, vi) 10–14 stigmatal rows, and vii) two longitudinal muscular bands running from the abdomen to the endostyle on each side. Partial sequences (810 bp) of the cytochrome c oxidase subunit I gene from the holotype and one of the paratypes differed at 10 sites from each other (1.26% K2P distance) but were the same when translated into amino acids. A phylogenetic tree supported that this species is included in the genus Clavelina. Keywords: Aplousobranchia, Chordata, Clavelinidae, East China Sea, Enterogona, Okinawa Islands, subtropical, taxonomy 
Clavelina ossipandae sp. nov. Diagnosis. A Clavelina with colony consisting of zooids extending from basal mass; zooids completely free, mean 15mm long; in life, a white, laterally elongated white patch present between oral and atrial siphons; small black point present on anterior body wall between oral and atrial siphons; an elongated black band situated laterally to the small black point on each side, slightly curved along edge of the white patch; transverse vessels white; endostyle black; short mid-dorsal black line situated posterior to atrial siphon, spanning for about four transverse vessels; 10–14 stigmatal rows in pharynx; on each side of thorax, 10 or 11 very thin longitudinal muscle bands, of which two running to endostyle, 5–6 to branchial siphon, and 2–4 to dorsal side. Etymology. The new specific name, ossipandae, is a noun in the genitive case, a composite derived from os (‘bone’ in Latin) and ‘Panda,’ the latter is meant to be the giant panda, Ailuropoda melanoleuca David, 1869, and herein treated as a noun that is latinized. The species is so named because the white anterior portion of the zooid with the characteristic black markings resembles to the face of the giant panda and the white transverse vessels evoke the ribs of a skeleton. Naohiro Hasegawa and Hiroshi Kajihara. 2024. Graveyards of Giant Pandas at the Bottom of the Sea? A strange-looking New Species of Colonial Ascidians in the Genus Clavelina (Tunicata: Ascidiacea). Species Diversity. 29(1); 53-64. DOI: 10.12782/specdiv.29.53 |
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