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Saturday, January 11th, 2025
| Time | Event | ||||||
| 9:17a | [Crustacea • 2025] Cherax pulverulentus • A New freshwater Crayfish (Decapoda: Parastacidae) from Southwest Papua Province, Indonesia
Abstract Cherax pulverulentus sp. nov. is a moderately-sized burrowing freshwater crayfish endemic to the streams west of the Ayamaru Lake in Bird's Head Peninsula (Framu Subdistrict, Southwest Papua Province), the Indonesian part of New Guinea. Although this species has been exploited in the ornamental aquarium trade at least for 21 years, it has not been formally named until now. Its commonly used commercial names in the pet trade are: “Hoa Creek”, “Irian Jaya”, or “Blue Moon” crayfish, but these names are also used for other more bluish or pinkish species of Cherax. Cherax pulverulentus sp. nov. is genetically and morphologically most similar to Cherax pulcher Lukhaup, 2015, but both species may be distinguished by several morphological characteristics and DNA sequence divergence, which support C. pulverulentus sp. nov. as a valid species. Crustacea, Cherax, Parastacidae, New Guinea, taxonomy, morphology, phylogeny, pet trade, freshwater
Cherax pulverulentus sp. nov. Etymology. The meaning of the Latin term pulverulentus is “covered with dust” in reference to the many tiny dot-like spots on the carapace of the new species. Jiří PATOKA, Surya Gentha AKMAL, Martin BLÁHA and Antonín KOUBA. 2025. Cherax pulverulentus, A New freshwater Crayfish (Decapoda: Parastacidae) from Southwest Papua Province, Indonesia. Zootaxa. 5566(3); 522-534. DOI: doi.org/10.11646/zootaxa.5566.3.4 | ||||||
| 2:00p | [Botany • 2025] Primulina xingyiensis (Gesneriaceae) • A New Species in the Karst Landforms of Guizhou Province, China
Abstract Primulina xingyiensis X.X.Bai & F.Wen, a new species of Gesneriaceae in the karst landforms of Xingyi City, Guizhou Province, China, is described and illustrated. Morphologically, the species is similar to P. davidioides on corolla, while it is distinguished from P. davidioides by characteristics of thinner and smaller leaves, shorter peduncles, fewer flowers, smaller corolla, glabrous staminodes, and ovary shorter than style. Molecular phylogenetic analysis based on the combined dataset of rpl32-trnL, trnL-trnF, atpB-rbcL, and ITS sequences of the new species and 151 other species of Primulina Hance showed that the two populations of P. xingyiensis clustered into a clade, while it was most closely related to P. malingheensis. Following criteria D1 in the IUCN Red List Categories and Criteria, the new species should be assessed as ‘vulnerable’ (VU). Key words: Endemic species, Gesneriaceae, Karst, morphology, phylogeny, taxonomy 
Primulina xingyiensis X.X.Bai & F.Wen, sp. nov. Diagnosis: The corolla morphology of Primulina xingyiensis is similar to that of P. davidioides, and the phylogenetic tree shows that its closest relative is P. malingheensis, but there are also clear differences in morphological characteristics between the three (Table 2, Fig. 4). Primulina xingyiensis can be distinguished from P. davidioides by the thinner and smaller leaves, slightly fleshy (vs. pachyphyllous, rigid and coriaceous when dry); the shorter peduncles, 0.5–4 cm long only [vs. 5–9(–12) cm long]; the fewer flowers, 1–6 flowers per cymes (vs. 5–9(–11) flowers per cymes); the smaller corolla, ca. 5 cm long (vs. ca. 6 cm long); the staminodes glabrous, central one ca. ... Etymology: The specific epithet ‘xinyiensis’ refers to the type locality Xingyi. Its Chinese name is Xīng Yì Bào Chūn Jù Tái (兴义报春苣苔). Jiang-Miao Gu, Song-Tao He, Fang Wen, Xin-Xiang Bai and Mei-Jun Li. 2025. Primulina xingyiensis (Gesneriaceae), A New Species in the Karst Landforms of Guizhou Province, China. PhytoKeys. 251: 1-12. DOI: doi.org/10.3897/phytokeys.251.135126  | ||||||
| 2:01p | [Arachnida • 2025] Raveniola fuzhouensis • A New Species of Raveniola Zonstein, 1987 (Araneae: Nemesiidae) from Fujian, China
Abstract Background: The genus Raveniola Zonstein, 1987 comprises 66 species, distributed across regions from East Asia to the Caucasus, with about 20 species recorded from China. According to Zonstein et al. (2018) and Zonstein (2024), members of Raveniola can be identified by the presence of two to three retroventral megaspines arranged sequentially on tibia I in males and paired spermathecae in females, each bearing two-branched heads or a lateral diverticulum. New information: A new mygalomorph species, Raveniola fuzhouensis Zhou, sp. nov., is described from Fujian Province, China. Detailed description, diagnosis, illustrations and a distribution map of the new species are provided. Keywords: Asia, biodiversity, morphology, Mygalomorphae, taxonomy
Raveniola fuzhouensis Zhou, sp. nov. Diagnosis: The new species is similar to Raveniola gracilis Li & Zonstein, 2015 (Tian et al. 2020: figs. 1C-D, 2, 3C-D and Li and Zonstein 2015: figs. 9A-C and 10) in the male and female individual abdomen back pattern approximation. The male of the new species can be easily distinguished from R. gracilis by the following: (1) embolus base wider and black (Fig. 3) vs. embolus of R. gracilis dark brown (Li and Zonstein 2015: fig. 9; Tian et al. 2020: fig. 3D); (2) SD base the pipeline smooth down to embolus (Fig. 3B) vs. SD base the pipeline 90° to embolus of R. gracilis (Li and Zonstein 2015: figs. 9B and 10B). The female of the new species can be easily distinguished from R. gracilis by the following: (1) the stalk of the spermathecae is significantly wider (trumpet-shaped), with the basal width approximately same as ... Etymology: The specific name refers to the type locality, adjective. Distribution: China (Known only from type locality in Fujian; Fig. 8). Biology: R. fuzhouensis Zhou, sp. nov. lives in dry soil burrows on loess road cuts or cavities beneath flat stones. The excavation marks inside the burrow indicate their ability to further modify the burrow, rather than passively adapting to the existing environment. Guchun Zhou, Jian Lu, Muqiushi Cui and Jiasheng Xu. 2025. A New Species of Raveniola Zonstein, 1987 (Araneae, Nemesiidae) from Fujian, China. Biodiversity Data Journal. 13: e142264. DOI: doi.org/10.3897/BDJ.13.e142264  | ||||||
| 2:05p | [Arachnida • 2023] Latrodectus occidentalis • Phylogenetic Analyses and Description of A New Species of Black Widow Spider of the Genus Latrodectus Walckenaer (Araneae: Theridiidae) from Mexico; one or more species?
ABSTRACT A new species of the spider genus Latrodectus Walckenaer, 1805 from Mexico is described based on an integrative taxonomic approach. Latrodectus occidentalis Valdez-Mondragón sp. nov. is described using the molecular markers cytochrome c oxidase subunit 1 (CO1) and internal transcribed spacer 2 (ITS2), morphology of male and female specimens, and Species Distribution Models (SDM). Four molecular methods for species delimitation were implemented. The new species is characterized by having a unique dorsal coloration pattern on the abdomen. Latrodectus occidentalis sp. nov. is considered a distinct and valid species for four reasons: (1) it can be distinguished by morphological characters (genital and somatic); (2) the average interspecific genetic variation is > 2%; (3) 12 haplotypes were recovered within the species, being separated by the next close haplogroup of L. hesperus Chamberlin & Ivie, 1935 (30 mutations); and (4) congruence was observed among the four molecular methods. The number of recorded species of Latrodectus from Mexico increases to four: Latrodectus mactans (Fabricius, 1775), L. hesperus Chamberlin & Ivie, 1935, L. geometricus C.L. Koch, 1841 (introduced), and L. occidentalis sp. nov. The diversity of the genus Latrodectus from Mexico is surely underestimated, and more sampling is needed from the different biogeographical provinces and ecoregions to fill in these gaps. Keywords: integrative taxonomy, North America, species distribution modeling, DNA barcodes, morphology
Valdez-Mondragón, A., & Cabrera-Espinosa, L. A. 2023. Phylogenetic Analyses and Description of A New Species of Black Widow Spider of the Genus Latrodectus Walckenaer (Araneae, Theridiidae) from Mexico; one or more species?. European Journal of Taxonomy. 897(1), 1–56. DOI: doi.org/10.5852/ejt.2023.897.2293   | ||||||
| 2:06p | [Botany • 2024] Argyreia manjolaiensis (Convolvulaceae) • A New Species from the southern Western Ghats, India
Abstract Argyreia manjolaiensis (Convolvulaceae), a new species from the southern Western Ghats of Tamil Nadu, is described and illustrated. Detailed description, photoplates, and distribution map are provided. Information on population status and ecology is also presented to facilitate the identification and conservation of the species. Keywords: Endemic species, Morning glory, Tamil Nadu, Taxonomy
Argyreia manjolaiensis Karupp., Bharath & P.S.S.Rich., sp. nov. Morphologically similar to A. fulgens Choisy but can be easily distinguished from 2–2.5 cm long petiole (vs. 3–7 cm long), a cordate lamina base (vs. rounded), a hairy abaxial surface of the lamina (vs. glabrous), 12 secondary veins (vs. 18–22), 10–12-flowered inflorescence (vs. 5–7-flowered), 3 bracts (vs. 2), subequal or unequal sepals (vs. equal) and a corolla tube that is pale purple at the base and milky white at the throat (vs. dark purple throughout). A detailed morphological comparison is provided in Table 1. .... Yadav P.B.S., Karuppusamy S. and P.S.S. Richard. 2024. A New Species of Argyreia (Convolvulaceae) from the southern Western Ghats, India. Rheedea. 34(5); rheedea.in/journal/GI7f2reS  | ||||||
| 2:50p | [Diplopoda • 2025] Hylomus piccolo & H. borealis • Two New Dragon Millipedes (Polydesmida: Paradoxosomatidae: Hylomus) from Limestone Mountains in northern Vietnam, with an identification key to Vietnamese Hylomus species [Mountainous Millipedes in Vietna
Abstract Two new species of the dragon millipede genus Hylomus Cook & Loomis, 1924 are described from mountainous areas in northern Vietnam, namely Hylomus piccolo sp. nov. and Hylomus borealis sp. nov. The COI barcodes are provided for these species, and an identification key is presented to all Vietnamese Hylomus species. Key words: Biodiversity, COI barcode, mountainous fauna, Southeast Asia, taxonomy
Class Diplopoda de Blainville in Gervais, 1844 Order Polydesmida Pocock, 1887 Family Paradoxosomatidae Daday, 1889 Genus Hylomus Cook & Loomis, 1924 Hylomus piccolo sp. nov. Etymology: The name refers to “piccolo”, a main character of the Japanese manga “Dragon balls” by Toriyama Akira (Japan). Noun in apposition. Hylomus borealis sp. nov. Etymology: An adjective epithet “borealis” refers to the northern-most province (Cao Bang) of Vietnam, the type locality. Anh D. Nguyen, Tam T. T. Vu and Thu-Anh T. Nguyen. 2025. Mountainous Millipedes in Vietnam. III. Two New Dragon Millipedes from Limestone Mountains in northern Vietnam (Polydesmida, Paradoxosomatidae, Hylomus), with an identification key to Vietnamese Hylomus species. ZooKeys. 1223: 247-262. DOI: doi.org/10.3897/zookeys.1223.139649 | ||||||
| 6:11p | [Ichthyology • 2025] Hongiastoma gen. nov., Angustistoma gen. nov. & Scaphostoma gen. nov. • Generic Revision of the Southeast and East Asian Torrent Carp Subfamily Acrossocheilinae (Cypriniformes: Cyprinidae) With Description of Three New Genera and a Ne
Abstract Molecular data from 35 of the 50 Acrossocheilinae species suggest that the species-level diversity in the subfamily has been overestimated, likely due to inadequate taxon and geographic sampling and reliance on morphological characters that vary intraspecifically. Three new genera, one resurrected genus, two resurrected species, and one new species are diagnosed and described herein. Nine synonyms of three valid species of Acrossocheilinae are recognized from the Yangtze, Xijiang, Song Hong, Annamite, and Mekong ecoregions in East and Southeast Asia. Thirty-two valid and six putative new species are indicated by molecular data and a key to the genera is provided. As more molecular and morphological data become available, additional taxonomic changes in this widespread and generally poorly known subfamily are likely. Keywords: Angustistoma gen. nov., Cyprinidae, Hongiastoma gen. nov., molecular and morphological systematics, Scaphostoma annamense sp. nov., Scaphostoma gen. nov.  Order: Cypriniformes Family: Cyprinidae Rafinesque, 1815 Subfamily: Acrossocheilinae Yang [Yang, et al. 2015.] Hongiastoma Hoàng and Nguyễn, new genus Type species: Varicorhinus argentatus Nguyễn and Đoàn, 1969. Lectotype RIAH 67, 147 mm, Suối Rút, Hòa Bình, Vietnam. Etymology: The name is from the Vietnamese prefix hong- meaning the Song Hong or Red River where the type species occurs, and the Greek suffix -stoma meaning mouth and referring especially to the horny sharp sheath on the lower lip. Gender neuter. Angustistoma Hoàng, new genus Type species: Onychostoma elongatum (Pellegrin and Chevey, 1934): 340. Holotype: MNHN 1934-026, 142 mm, Ngòi-Thia—tributary of Red River, Nghĩa-Lộ, Yên-Bái, Vietnam. Etymology: The name is from the classical Latin prefix angusti- meaning narrow, and the Greek suffix -stoma meaning mouth and referring especially to the horny sharp sheath on the lower lip. Gender neuter. Scaphostoma Hoàng and Phạm, new genus Type species: Gymnostomus lepturus (Boulenger, 1900): 961. Holotype: BMNH 1899.11.30.21, 159.2 mm, Five-fingers Mountains, Hainan Island, China. Etymology: The name is from the classical Greek prefix σκαφό (scapho) meaning bow-shaped, and the Greek suffix -stoma meaning mouth and referring especially to the horny sharp sheath on the lower lip. Gender neuter. Huy Duc Hoang, Nian-Hong Jang-Liaw, Hung Manh Pham, Ngan Trong Tran, Jean-Dominique Durand, Tao Dinh Nguyen, John Pfeiffer and Lawrence M. Page. 2025. Generic Revision of the Southeast and East Asian Torrent Carp Subfamily Acrossocheilinae (Pisces: Teleostei) With Description of Three New Genera and a New Species From Vietnam. Journal of Zoological Systematics and Evolutionary Research. DOI: doi.org/10.1155/jzs/8895501 |
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