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Thursday, February 3rd, 2022
| Time | Event | ||||
| 2:29a | [Herpetology • 2022] Cyrtodactylus lungleiensis • A New Bent-toed Gecko Genus Cyrtodactylus Gray (Squamata: Gekkonidae) from the State of Mizoram, India
Abstract Herein we describe a new species of Cyrtodactylus from Lunglei District in the state of Mizoram, India. Based on morphology and ND2 gene sequences, the species was found to be a member of the Cyrtodactylus khasiensis group. The species can be identified by its moderate size (adult SVL 64.9–75.1 mm) with rounded, bluntly conical and feebly keeled dorsal tubercles in 24–28 longitudinal rows; 32–40 paravertebral tubercles between the level of the axilla and the level of the groin; 37–43 mid-ventral scale rows; 3–5 precloacal pores in males and 5–7 pitted precloacal scales in females; 16–18 subdigital lamellae under IV toe; no single row of transversely enlarged subcaudal scales; dorsal markings are dark brown, irregular and distinct; tail with alternating dark and light bands. Keywords: Reptilia, Northeast India, taxonomy, ND2, lizard, reptile, conservation   Cyrtodactylus lungleiensis Hmar Tlawmte Lalremsanga, Hauzel Chinliansiama, Sanath Chandra Bohra, Lal Biakzuala, Mathipi Vabeiryureilai, Lal Muansanga, Fanai Malsawmdawngliana, Gospel Zothanmawia Hmar, H.T. Decemson, Vanlal Siammawii, Madhurima Das and Jayaditya Purkayastha. 2022. A New Bent-toed Gecko (Cyrtodactylus Gray: Squamata: Gekkonidae) from the state of Mizoram, India. Zootaxa. 5093(4); 465-482. DOI: 10.11646/zootaxa.5093.4.5  | ||||
| 2:34a | [Herpetology • 2022] Bothrops germanoi • Speciation Process on Brazilian Continental Islands, with the Description of A New Insular Lancehead of the Genus Bothrops (Serpentes, Viperidae)
Abstract Brazilian continental islands represent a natural laboratory to study speciation driven by recent phenotypic and genotypic divergence. The Bothrops jararaca species group is distributed in the Brazilian Atlantic Forest and on most of the Brazilian continental islands. The group is currently composed of the mainland common lancehead (B. jararaca) and four insular species (B. alcatraz, B. insularis, B. otavioi, and B. sazimai). Here, we evaluate mitochondrial DNA and morphological diversity of the B. jararaca species group and aim to provide additional evidence to understand insularization processes on the Brazilian coast. Our results, interpreted together with a comprehensive review of geomorphological data, provide a new conceptual framework for understanding the colonization process of the Brazilian continental islands. This framework suggests a history of multiple rounds of periodic isolation and reconnection between insular populations and their mainland relatives throughout the last 420,000 years. Furthermore, although some insular populations may have speciated prior to the last glacial maximum, other species likely diverged within the last 11,000 years. Additionally, the repeated evolution of size and dietary shift in the B. jararaca species group suggests a remarkable case of convergent adaptation. Our study provides evidence that the Bothrops from Ilha da Moela (Brazilian state of São Paulo) represents an undescribed species, presenting a distinct phenotype, and an exclusive history of isolation and adaptation. We describe this unique lancehead as a new species and we suggest it should be listed as critically endangered based on its endemicity to a small island that is severely impacted by constant and longstanding human presence. Key words: Bothrops, Serpentes, Viperidae, lancehead, Brazilian Atlantic Forest, Ilha da Moela, peripatric speciation, sea level changes  Bothrops germanoi Fausto E. Barbo, William W. Booker, Marcelo R. Duarte, Betina Chaluppe, José A. Portes-Junior, Francisco L. Franco and Felipe G. Grazziotin. 2022. Speciation Process on Brazilian Continental Islands, with the Description of A New Insular Lancehead of the Genus Bothrops (Serpentes, Viperidae). Systematics and Biodiversity. 20(1); 1-25. DOI: 10.1080/14772000.2021.2017059 | ||||
| 4:24a | [Botany • 2021] Acanthocereus atropurpureus (Cactaceae: Hylocereeae) • A New Endemic Species from southern Jalisco, Mexico
Abstract A new species of Acanthocereus, endemic from southern Jalisco, is described and illustrated. Acanthocereus atropurpureus distinguishes by the diameter of mature stems, presence of low ribs with sinuate margins, dull green stem epidermis turning purple during dry season, and the occurrence of four small central spines. We discuss the morphological differences from other Acanthocereus species and we provide information about its habitat and conservation status. Keywords: Acanthocereus atropurpureus, dry deciduous forest, Hylocereeae, Mexican Pacific Lowlands, Sierra de Manantlán, Eudicots   Acanthocereus atropurpureus P. González-Zamora & Dan. Sánchez, sp. nov. Etymology: —The specific epithet refers to the non-maculated purple color of the new and older stems under dry conditions. Vernacular name: —Queen of the night (local name).
Pedro González-Zamora, Aarón Rodríguez-Contreras and Daniel Sánchez. 2021. A New Endemic Species of Acanthocereus (Cactaceae) from southern Jalisco, Mexico. Phytotaxa. 522(2); 131-138. DOI: 10.11646/phytotaxa.522.2.5 |
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