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Saturday, September 14th, 2024
| Time | Event | ||||||||
| 3:00a | [Ichthyology • 2024] Sueviota aethon • A New Species of Sueviota (Gobiiformes: Gobiidae) from the Red Sea
Abstract A new gobiid species is described from ten specimens, 9.2 – 16.7 mm SL, collected from the Saudi Arabian Red Sea. The new species is most similar to Sueviota pyrios from the Gulf of Aqaba in the northern Red Sea. It differs from S. pyrios by having no large red spots on the dorsal and caudal fin elements, no elongate spines in the first dorsal fin, a shorter pelvic fin that does not reach the anus, branched pectoral fin rays, and a projecting lower jaw. The new species is further distinguished from all its congeners by a complete lack of cephalic sensory canals and pores. Specimens were found in small caves and overhangs at depths between 10 and 53 meters. Key words: Biodiversity, coral reef fish, Gobiidae, identification key, new species, Red Sea, Sueviota, taxonomy
Sueviota aethon Nunes Peinemann, Pombo-Ayora & Tornabene, sp. nov. Grumpy dwarfgoby Diagnosis: This is a species of Sueviota characterized by the following combination of characters: no cephalic sensory-canal pores; dorsal fin VI-I,8, or I,9, without filamentous spines; anal fin I,7 or I,8; pelvic fin I,5, rays 1 – 4 branched, fifth ray unbranched or with two branches, elongate (77–88% of fourth) and flattened towards the tips if unbranched, fourth ray longest; well-developed pelvic fin membrane fully joining fifth pelvic fin rays, frenum absent; 14 or 15 pectoral fin rays, some branched; body robust and deep, anterior slope of snout nearly vertical giving the head a blunt profile, terminal mouth inclined vertically forming a 72° angle to horizontal body axis. Etymology: The specific epithet stems from the ancient Greek Aethon, one of the four horses of the sun god Helios. The most similar species to S. aethon, Sueviota pyrios Greenfield & Randall, 2017, is named after a different horse of Helios. The specific name is a noun in apposition. The common name, Grumpy dwarfgoby, refers to the fish’s apparent grumpy and rather unhappy appearance, primarily due to the extremely upturned mouth position. Viktor Nunes Peinemann, Lucía Pombo-Ayora, Luke Tornabene, Michael L. Berumen. 2024. The Grumpy Dwarfgoby, A New Species of Sueviota (Teleostei, Gobiidae) from the Red Sea. ZooKeys. 1212: 17-28. DOI: doi.org/10.3897/zookeys.1212.121135 | ||||||||
| 3:01a | [Herpetology • 2024] Stefania imawari & S. upuigmae • Head in the Clouds: Two New microendemic Tepui-summit Species of Stefania (Anura: Hemiphractidae)
Abstract In addition to the type locality (the summit of Aprada-tepui, Bolívar State of Venezuela), the distribution of the egg-brooding frog Stefania satelles was long thought to include several isolated tabletop mountain (tepui) summits surrounding the large Chimantá Massif in Bolívar State (hence the Latin name “satelles”). However, multilocus molecular phylogenetic analyses have revealed that this taxon includes several undescribed morphologically cryptic species, and that S. satelles should be restricted to its type locality. Two tepui-summit species confused under that name in the literature remain to be named, and the present paper aims at describing these populations previously referred to as Stefania sp. 3 and S. sp. 5. Stefania sp. 3 is only known from the small summit of Angasima-tepui, while S. sp. 5 is only reported from the small summit of Upuigma-tepui, both mountains being located south of the Chimantá Massif. These new, phylogenetically distinct species are described based on external morphology and osteology and in comparison to close relatives in the S. ginesi clade, which consists exclusively of tepui summit species. Both new species have highly restricted geographic ranges (less than 3 km2) and should be listed as Critically Endangered according to IUCN criteria. Keywords: Homoplasy, Morphology, Osteology, Pantepui, Systematics, Taxonomy
Stefania imawari sp. nov. Etymology. The specific epithet imawari is a noun used in apposition and refers to the malicious spirits that inhabit the tepuis, according to Pemón traditional beliefs (Arturo Berti, pers. comm.). The Pemón are indigenous people living in the southeast region of Venezuela, including the area surrounding the type locality.
Stefania upuigmae sp. nov. Etymology. The specific epithet upuigmae is a noun in the genitive case and refers to the type locality, the summit of Upuigma-tepui, also locally known as “El Castillo”.
Philippe J.R. Kok. 2024. Head in the Clouds: Two New microendemic Tepui-summit Species of Stefania (Anura: Hemiphractidae). Zoological Letters. 10: 14. DOI: doi.org/10.1186/s40851-024-00237-w | ||||||||
| 7:06a | [Paleontology • 2024] Makrokylindrus itoi • A beautifully preserved comma shrimp (Pancrustacea: Peracarida) from the Plio-Pleistocene of Japan and the fossil record of crown Cumacea
Abstract Comma shrimp, or cumaceans, are diverse benthic crustaceans, yet they are one of the groups with the poorest fossil record, hindering our understanding of the evolution of the group in deep time. Here, we describe a new species of fossil comma shrimp, Makrokylindrus itoi sp. nov., from the Plio-Pleistocene of Japan. The singular fossil is exceptionally preserved, including details of the carapace, cuticle, and some appendages, and it represents the first known fossil of the family Diastylidae and only the fourth fossil crown group cumacean known to date. We suggest that the scarce and sparsely known fossil record of cumaceans likely reflects a lack of recognition due to their small size and unfamiliar anatomy, making fossil cumaceans easy to misidentify, be confused with crustacean larvae of unknown affinities, or be interpreted as fragments of other crustaceans (taxonomic bias), rather than a lack of fossilization potential (taphonomic bias). Keywords: Cenozoic, Diastylidae, exceptional preservation, Neogene, quaternary
Systematic paleontology Arthropoda von Siebold, 1848 Malacostraca Latreille, 1802 Cumacea Krøyer, 1846 Diastylidae Bate, 1856 Makrokylindrus Stebbing, 1912 Makrokylindrus itoi sp. nov. Diagnosis: The carapace, pereon, and pleon were covered with small and large pits arranged in a scale-like pattern. The carapace bore a line of large pits that paralleled the ventral margin. The pseudorostral lobes were 0.5× the total carapace length. The telson was cylindrical, and it was at least 3× longer than pleonite 6 length, with the post-anal portion much shorter than the pre-anal. Etymology: The specific epithet honors the late Mr. Takashi Ito, an avid fossil collector and artist from Japan who discovered and collected the holotype, made it available for study, and donated it to the Yale Peabody Museum.  Javier Luque and Sarah Gerken. 2024. A beautifully preserved comma shrimp (Pancrustacea: Peracarida) from the Plio-Pleistocene of Japan and the fossil record of crown Cumacea. Invertebrate Biology. DOI: doi.org/10.1111/ivb.12440 | ||||||||
| 7:36a | [Botany • 2024] Lepanthes garciarovirensis (Orchidaceae: Pleurothallidinae) • Unhiding Colombian Orchid Treasures: A New Lepanthes from the northeastern Andes in Colombia
Abstract A new species of Lepanthes from the eastern Colombian Andes from the department of Santander has been discovered. Here it is described, illustrated, and compared with species with morphological affinities, particularly with the sympatric Lepanthes rabei, from which it can be separated by a combination of traits: the larger plant length, reaching up to 8.28 cm in height, the elliptical-lanceolate leaves, concolor, the sepals not denticulate, the lip blades ovate-oblong, obtuse, slightly falcate at the apex, the long cilia at the lip tip and the appendix minute, reflexed downwards, pubescent. Information about its distribution, phenology, and conservation status is also provided. endemic species, oak-forest, plant taxonomy, Pleurothallidinae, Monocots
Lepanthes garciarovirensis E.Restrepo, H.Caro & S.Arango sp. nov.
Heidy Caro, Susana Arango-Carvajal, Diego Suescún and Eugenio Restrepo. 2024. Unhiding Colombian Orchid Treasures: A New Lepanthes (Orchidaceae) from the northeastern Andes in Colombia. Phytotaxa. 664(3); 191-199. DOI: doi.org/10.11646/phytotaxa.664.3.4 | ||||||||
| 11:36a | [Herpetology • 2024] Liurana namchabarwa • A New Species of the Genus Liurana (Anura: Ceratobatrachidae) from Medog, China
Abstract A new species of the genus Liurana is described from Medog, Xizang, China, based on morphological and molecular data. Molecular phylogenetic analysis based on the mitochondrial gene COI indicated that this new species represented an independent evolutionary lineage. In addition, the uncorrected genetic distance between the new species and its closest congener species, L. alpina, was 9.6%–9.8% for COI. The new species, Liurana namchabarwa sp. nov. Yu, Lin, Wang, Jiang and Xie, could be distinguished from its congeners by following characters: (1) relatively large body size in this genus, SVL = 21.2–23.1 mm in adult males ( n = 3); (2) relatively narrow head (HL/HW = 100.5%–104.8% ( n = 3)); (3) digital disc not expanded; (4) relatively long hindlimbs, with tibiotarsal articulation reaching tip of snout when adpressed.
Liurana namchabarwa sp. nov. Yu, Lin, Wang, Jiang and Xie Diagnosis: Liurana namchabarwa sp. nov. is assigned to the genus Liurana by its phylogenetic position and the following morphological characters: (1) body size small (SVL 21.2–23.1 mm, n = 3); (2) large, oval tongue with notch and scattered small papillae; (3) interdigital webbing absent; (4) tarsal fold absent; (5) vomerine teeth absent; and (6) vocal sac and vocal sac openings absent. Liurana namchabarwa sp. nov. can be distinguished from its congeners by a combination of the following morphological characters: (1) SVL 21.2–23.1 mm; (2) HL larger than HW; (3) tympanum distinct; (4) tibiotarsal articulation reaching tip of snout when adpressed; (5) metacarpal tubercles absent; and (6) not expanded digital disc.
Etymology: The specific epithet of the new species, “ namchabarwa” means “Namcha Barwa Mountain”, indicating that the habitat of this species is very close to the Namcha Barwa Mountain. We suggest Namchabarwa Papilla-tongued Frog as its English common name and Nan Jia Ba Wa She Tu Wa (南迦巴瓦舌突蛙) as its Chinese common name. Haoqi YU, Yiheng LIN, Yuxi WANG, Puyang ZHENG, Shengchao SHI, Bin WANG, Jianping JIANG, Zhaobin SONG and Feng XIE. 2024. A New Species of the Genus Liurana (Anura: Ceratobatrachidae) from Medog, China. Asian Herpetological Research. DOI: doi.org/10.3724/ahr.2095-0357.2024.0008  |
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