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Saturday, May 31st, 2025
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| 2:08p | [Invertebrate • 2025] Rediscovery and Phylogenetic Position of A Long-lost Typhloperipatus williamsoni Kemp, 1913 (Onychophora: Peripatidae) after 111 Years from Arunachal Pradesh, India
ABSTRACT Typhloperipatus williamsoni, a long-lost species of the phylum Onychophora (velvet worms), is rediscovered after over a century in the Siang Valley in Arunachal Pradesh, India. The rediscovery is based on two individuals, one collected near the type locality (Kalek, Arunachal Pradesh, India) and the other from a previously unknown location (Yingku, Arunachal Pradesh, India). We provide additional natural history and distribution information about this poorly known species, and the first live images. Molecular data for T. williamsoni is generated for the first time to understand its phylogenetic position within Peripatidae. The phylogenetic analyses based on three mitochondrial genes (12S, 16S and COI) recovered T. williamsoni as a sister to Southeast Asian Eoperipatus. Further, the biogeographic scenario of Asian peripatids is briefly discussed based on the molecular dating analysis. KEYWORDS: Velvet worms, Siang expedition, natural history, molecular analysis, biogeography  Typhloperipatus williamsoni Kemp, 1913  Surya Narayanan, D.R. Priyadarsanan, A.P. Ranjith, R. Sahanashree and Aravind Neelavar Ananthram. 2025. Rediscovery and Phylogenetic Position of A Long-lost Typhloperipatus williamsoni Kemp, 1913 (Onychophora: Peripatidae) after 111 Years from Arunachal Pradesh, India. Journal of Natural History. 59(17-20); 1167-1180. DOI: doi.org/10.1080/00222933.2025.2483434 [11 Apr 2025] | ||||||
| 3:00p | [Herpetology • 2024] Bufo rubroventromaculatus • A New Record of Bufo gargarizans Complex (Anura: Bufonidae) from Truong Son Mounts, Ha Tinh and Ha Giang Provinces, Vietnam based on Molecular Evidence with A Description of A New Species
Abstract Based on a combination of molecular and morphological data, we herein report a new species within the bufonid Bufo gargarizans species complex. This is a widespread species complex with distribution from eastern Russia and the Korean Peninsula to China and the Ryukyu Islands of Japan. Records of this species have been documented in the Guangxi and Yunnan Provinces near the border with Vietnam and, for the first time from Vietnam, in Ha Giang Province. The new record of Bufo cf. gargarizans from Vietnam is from Ha Tinh Province. This species has never been reported from Vietnam so far south, about 550 km south from the previously known locality in Ha Giang Province. The female specimen was found in the Ha Tinh Province, Vu Quang National Park of central Vietnam and two specimens (male and female) were found Ha Giang Province. They are clearly distinguished from B. gargarizans and all the mentioned species by a specific color pattern on the belly and creamy-yellowish throat with large, bright red speckles. Genetic divergences of three Vietnam specimens from Ha Giang and Ha Tinh Provinces in the ND2 gene sequences between the B. sp. nov. and all other congeners ranged from 4.3% (with B. andrewsi) to 7.0% (with B. stejnegeri). We give a description of the morphological characters and coloration of the new record and provide an expanded diagnosis. Keywords: Bufo sp. nov.; Vietnam; morphology; molecular evidence; DNA analysis
Bufo rubroventromaculatus sp. nov. Diagnosis: Three specimens of toads were assigned to the genus Bufo based on molecular phylogenetic analyses. Bufo rubroventromaculatus sp. nov. is distinguished from other species in the genus Bufo by specific coloration with red speckles on the belly (Figure 4 and Figure 5). Maximal size known for this species (SVL 125.45 mm) (Table 3); head longer than width (maximal HW 60.32 mm, HL 65.42 mm), snout obtuse, protruding in profile; canthus rostralis distinct; pupil horizontally oval; loreal region flat and oblique; snout length greater than eye horizontal diameter (HL 13.7 mm, ED 10.6 mm, ED/SNL 0.77); parotoid gland well developed, elongated; tympanum distinct, small and round; vomerine teeth present; tongue not notched posteriorly. Etymology: The specific name rubroventromaculatus originates from the type of characteristic coloring of the belly with numerous large red spots of irregular shape. Nikolai L. Orlov, Natalia B. Ananjeva, Oleg A. Ermakov, Svetlana A. Lukonina, Hoa Thi Ninh and Tao Thien Nguyen. 2024. A New Record of Bufo gargarizans Complex (Bufonidae, Anura) from Truong Son Mounts, Ha Tinh and Ha Giang Provinces, Vietnam based on Molecular Evidence with A Description of A New Species. Diversity. 16(7), 361. DOI: doi.org/10.3390/d16070361 [24 June 2024] | ||||||
| 3:08p | [Mollusca • 2025] Calybium plicatus • The Second Calybium Morlet, 1892 (Neritimorpha: Helicinoidea: Helicinidae), and the first record of the Genus for Vietnam’s Terrestrial Gastropod Fauna
Abstract This paper described the second species of the genus Calybium Morlet, 1892, Calybium plicatus sp. nov. was collected in Son Doong Cave, Phong Nha–Ke Bang National Park, Quang Binh Province, Central Vietnam. Calybium plicatus sp. nov. has a similar shell shape to Calybium massiei Morlet, 1892 but differs in having a smaller shell size, the parietal wall with six evenly spaced parietal lamellae. This discovery represents the first report of the genus Calybium in Vietnam.
Class Gastropoda Cuvier, 1795 Subclass Neritimorpha Cox, 1960 Order Cycloneritida Frýda, 1998 Superfamily Helicinoidea Férussac, 1822 Family Helicinidae Férussac, 1822 Subfamily Vianinae Baker, 1922 Calybium Morlet, 1892 Calybium plicatus sp. nov. Diagnosis. Shell medium-sized, depressed coni-cal, and sharply keeled body whorl; the calcareous layer on the dorsal side is coarse, strongly undulated and forms evenly spaced domes protruding from the shell surface; parietal wall with six lamellae, of which the sixth very long, curved, and close to the suture; palatal wall with a barrier-shaped lamella that ... Etymology. The species’ name is derived from its characteristic apertural dentition, from the Latin word ‘plicatus’, meaning ‘lamellae’ that are present at the parietal wall.
 Ngoc Khac Hoang, Van Lien Vu, Thi Thanh Binh Tran, Thanh Son Nguyen and Duc Sang Do. 2025. Description of the second Calybium Morlet, 1892, and the first record of the Genus for Vietnam’s Terrestrial Gastropod Fauna (Neritimorpha: Helicinoidea: Helicinidae). Ruthenica, Russian Malacological Journal. 35(1); 39–45. DOI: doi.org/10.35885/ruthenica.2025.35(1).4   | ||||||
| 3:08p | [Botany • 2025] Amomum zamboangense (Zingiberaceae) • The Phylogenetic Placement of A New Species of Amomum from the Philippines
Abstract During recent fieldwork in Pasonanca Natural Park, Zamboanga City, Philippines, we collected a ginger species belonging to Amomum sensu stricto that resembled the Bornean endemic Amomum stenosiphon. In phylogenetic analyses based on ITS trnK/matK sequences, the Philippine collections formed a monophyletic group but did not group with A. stenosiphon in the ITS tree whereas they are sister to each other in the trnK/matK tree. Also, one autapomorphic site in the ITS region was found for the Philippine collections. Nevertheless, the Philippine collections are morphologically distinct and differ from A. stenosiphon by their longer petioles, more narrow and ovate laminae, and fewer flowers per flowering shoot, and we describe here a new species, Amomum zamboangense, named after the type locality. We provide a colour plate and a preliminary assessment of its conservation status. Since Amomum dealbatum has previously been reported from the Philippines, two species of Amomum s.s. are now known to occur in the country. Keywords: Amomum dealbatum, Amomum stenosiphon, Elettariopsis,endangered, ITS, trnK/matK  Amomum zamboangense Rudolph Valentino A. Docot, Lyle Christian P. Santiago, Kean Roe F. Mazo, Mark Gregory Q. Rule, Thomas Haevermans and Axel Dalberg Poulsen. 2025. The Phylogenetic Placement of A New Species of Amomum (Zingiberaceae) from the Philippines. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.04768 [14 May 2025]  | ||||||
| 3:08p | [Ichthyology • 2025] Pseudobarbus outeniqua • A New redfin Species (Cypriniformes: Cyprinidae) from the Cape Fold Ecoregion of South Africa
Abstract Previous DNA-based studies identified four genetic lineages within Pseudobarbus afer: (i) the Mandela lineage confined to the Sundays, Swartkops, and Baakens river systems, (ii) the Krom lineage endemic to the Krom River system, (iii) the St Francis lineage occurring in the Gamtoos and adjacent river systems, and (iv) the Forest lineage occurring in several southern coastal river systems from the Tsitsikamma to the Klein Brak river system. Subsequent detailed morphological evaluation provided a redescription of P. afer s.s. (Mandela lineage), supported revalidation of P. senticeps (Krom lineage) and description of a new species, P. swartzi (St Francis lineage). The present study builds on these earlier findings and provides a formal description of the Forest lineage as a new species for science, Pseudobarbus outeniqua sp. nov. The new species differs from the aforementioned congeners by the conspicuous pigmentation on the centre of the scales which gives it a distinctive speckled hen pattern. The new species thus closely resembles the small-scale redfin, P. asper, in colour pattern, but it is readily separated from this species by genetic characters and fewer number of scales in predorsal region (16–17, mode 16 vs 18–26, mode 20–23) and around the caudal peduncle (14–15, mode 15 vs 16–22, mode 18–20). A revised key for the single-barbeled redfins is presented. Key words: Conservation, endemic hotspot, Forest lineage, minnows, systematics, threatened freshwater fish
Pseudobarbus outeniqua sp. nov. Proposed common names. Forest redfin (English), Wildernis rooivlerkie (Afrikaans). Diagnosis. Pseudobarbus outeniqua sp. nov. is diagnosed among all currently recognised congeners by the following combination of character states: mouth with one pair of barbels; barbel length 1.0–1.9 times orbit diameter, reaching vertical through posterior edge of eye; pigmentation distinct, with scale centres darkly pigmented, giving the fish an overall speckled appearance, speckling less conspicuous or absent ventrally; presence of a distinct dark mid-lateral band, with a broader anterior half and a narrower posterior half which ends in form of a large triangular mark at the base of the caudal fin; lack of dark spots, dashes, stripes or wavy lines on back and mid-dorsal; scales moderate sized, 35–37 in lateral line series, 14–15 (mode 15) around caudal peduncle, and 16–17 (mode 16) on predorsal region. Detailed comparison of the new species with the other congeners is presented below. Etymology. The specific epithet outeniqua refers to the Outeniqua mountain range and highlights the species’ occurrence in streams draining its southern slopes within the southern Cape Fold Ecoregion. Fatah Zarei, Pedro H. N. Bragança, Paul H. Skelton and Albert Chakona. 2025. Pseudobarbus outeniqua sp. nov., A New redfin Species (Teleostei, Cyprinidae) from the Cape Fold Ecoregion of South Africa. ZooKeys 1239: 231-255. DOI: doi.org/10.3897/zookeys.1239.131064 |
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