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Monday, October 2nd, 2023
| Time | Event | ||||||||
| 10:12a | [Botany • 2021] Begonia sohoton, B. tarangban et B. burabod (Begoniaceae, sect. Baryandra) • Three New Species from Samar Island, the Philippines
Abstract The geographic location, climatic, and soil conditions of Samar Island render a mosaic of varied habitats which harbor numerous endemic, rare, and endangered species of plants. The island province is one of the centers of plant endemism in the Philippines. Included in this rich biodiversity of flora are members of genus Begonia of the family Begoniaceae. In 2018, researchers of the University of the Philippines found in the island three unknown Begonia species. With rhizomatous habits, persistent stipules, protandrous inflorescences, four-tepaled flowers, three winged capsules and bifid placenta, the three species are clearly members of Begonia section Baryandra. Studies of literature, herbarium specimens, and living plants support the recognition of the three new species: Begonia sohoton, Begonia tarangban and Begonia burabod. Keywords: Eudicots, endemic species, limestone forest, Samar Island Natural Park, taxonomy  Rosario Rivera Rubite, Celeena Aimeree de Guzman Justo, Patricka Coliflores Villaseñor, Marjorie D. delos Angeles, Danilo N. Tandang and Che-Wei Lin. 2021. Three New Species of Begonia (section Baryandra, Begoniaceae) from Samar Island, the Philippines. Phytotaxa. 516(3); 263–274. DOI: 10.11646/phytotaxa.516.3.5 | ||||||||
| 2:18p | [Botany • 2023] Illicium gansuense (Schisandraceae) • An unexpected New Tree Species from Gansu, China
Abstract We describe the newly-discovered species Illicium gansuense (Schisandraceae), discovered in the Yuhe area of Giant Panda National Park, Gansu, China. Morphologically, I. gansuense resembles I. ternstroemioides and I. arborescens. However, the new species can be distinguished by its smaller leaf size, the larger number of tepals, tepal margin ciliate, and distinct flowering and fruiting seasons. Key words: Austrobaileyales, basal angiosperms, Gansu, Giant Panda National Park, Illiciaceae, Yuhe area
Illicium gansuense Z.F.Bai & Xue L.Chen, sp. nov. Diagnosis: Illicium gansuense is similar to I. ternstroemioides and I. arborescens in overall form, leaf characters, red flowers, location, and population density. Illicium gansuense can be distinguished from I. ternstroemioides and I. arborescens based on leaf-blades size (7–12 × 1.8–3.5 cm in I. gansuense vs. 7–13 × 2–5 cm in I. ternstroemioides vs. 6–12 × 2–4.5 cm in I. arborescens), tepal number and pubescence (10–17 tepals with ciliate margins vs. 10–14 tepals with glabrous margins vs. 14–21 tepals with glabrous margins), number of carpels (10–13 vs. 12–14 vs. 12–16), number and size of the stamens (23–27, 2–3 mm long vs. 22–30, 1.8–3.4 mm long vs. 39–41, 2–3 mm long), and ovary length (1–1.5 mm long vs. 1.3–2.5 mm long vs. 1–1.8 mm long). (Table 1). Zengfu Bai, Zhihua Zhang, Xuelin Chen and Ji Zhang. 2023. An unexpected New Tree Species from Gansu, China: Illicium gansuense (Schisandraceae). PhytoKeys. 230: 301-307. DOI: 10.3897/phytokeys.230.102754  | ||||||||
| 2:18p | [Diplopoda • 2023] Sphaerobelum turcosa • A New Jewel-like Species of the Pill-millipede Genus Sphaerobelum Verhoeff, 1924 (Sphaerotheriida: Zephroniidae) from northeastern Thailand
Abstract A new species of the giant pill millipede genus Sphaerobelum is described: Sphaerobelum turcosa sp. nov. from the northeastern part of Thailand. Species delimitation is based on morphological characters and COI sequence data. The new species can be clearly discriminated from congeners by its greenish-blue body color, the face mask-like appearance of the thoracic and anal shields jointly when rolled up, and the combination of the following four characters: (1) the coxa of the second leg laterally with a sharp and long process, (2) the tarsi of legs 4–21 with 6–7 ventral spines, (3) the anterior telopods consisting of four conspicuous telopoditomeres, and (4) the immovable, slender (not strongly humped) and distally curved finger of the posterior telopods without a membranous spot. The interspecific COI sequence divergence between the new species and other Sphaerobelum species ranges from 17% to 23% (mean 20%). The intergeneric COI sequence divergence between the new species and Zephronia species ranges from 18% to 21% (mean 20%). The relationships among Sphaerobelum and Zephronia species based on the COI sequence data were not resolved in this study. Sphaerobelum turcosa sp. nov. is restricted to limestone habitat in Loei province and is probably endemic for the Thai fauna. Key words: Biodiversity, limestone karst, soil fauna, Southeast Asia, taxonomy Family Zephroniidae Gray, 1843 Subfamily Zephroniinae Gray, 1843 Tribe Zephroniini Gray, 1843 Genus Sphaerobelum Verhoeff, 1924
Sphaerobelum turcosa Srisonchai & Pimvichai, sp. nov. Diagnosis: Coxal process on leg 2 sharply projecting, tarsi of legs 4–21 with 4/5/6/7/8 ventral spines. Similar in these respects to S. lachneeis, S. schwendingeri and S. laoticum, but S. turcosa sp. nov. differs from them by the combination of several characters, viz. body yellow contrasting to dominant greenish-blue color (vs. dark green/black); mesal margin of femur with teeth (vs. without teeth); vulva board and large, covering mesal 2/3 of coxa (vs. narrower, covering mesal 1/3 or half of coxa); anterior telopod consisting of 4 conspicuous telopoditomeres (vs. 3 telopoditomeres); immovable fingers of posterior telopod slender (vs. strongly humped and swollen). Etymology: The specific name is a Latin adjective, meaning ‘turquoise, greenish-blue mineral,’ and refers to the general body color of living specimens. กิ้งกือกระสุนเทอร์คอยส์, กิ้งกือกระสุนสี Ruttapon Srisonchai, Natdanai Likhitrakarn, Chirasak Sutcharit, Thierry Backeljau and Piyatida Pimvichai. 2023. A New Jewel-like Species of the Pill-millipede Genus Sphaerobelum Verhoeff, 1924 (Diplopoda, Sphaerotheriida, Zephroniidae) from Thailand. ZooKeys. 1181: 41-57. DOI: 10.3897/zookeys.1181.109076 | ||||||||
| 3:07p | [Herpetology • 2023] Cyrtodactylus disjunctus • A New Species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from the Thai-Malay Peninsula and the Independent Evolution of Cave Ecomorphology on Opposite Sides of the Gulf of Thailand
Abstract An integrative taxonomic analysis recovers a distinctive new species of the gekkonid genus Cyrtodactylus Gray, 1827 from Satun Province in extreme southern Thailand as the sister species to the Cyrtodactylus intermedius group of southern Indochina, approximately 600 km to the northeast across the Gulf of Thailand. Based on 1449 base pairs of the mitochondrial gene NADH dehydrogenase subunit 2 (ND2) and its flanking tRNAs, the new species, Cyrtodactylus disjunctus sp. nov., bears a pairwise sequence divergence from the mean divergences of the intermedius group species ranging from 17.9–23.6%. Three different principal component analyses (PCA) and a multiple factor analysis (MFA) recover C. disjunctus sp. nov. as a highly distinctive karst cave-adapted species based on morphology and color pattern. Its sister species relationship to the intermedius group—to which it is added here—further underscores a growing body of analyses that have recovered a trans-Gulf of Thailand connection across the submerged Sunda Shelf between the southern Thai-Malay Peninsula and southern Indochina. Fragmented karstic archipelagos stretching across Indochina have served as foci for the independent evolution of nearly 25% of the species of Cyrtodactylus. The description of C. disjunctus sp. nov. continues to highlight the fact that karstic habitats support an ever-increasing number of threatened site-specific endemics that compose much of the reptile diversity of many Asian nations but, as of yet, most of these landscapes have no legal protection. Keywords: Reptilia, gecko, Indochina, integrative taxonomy, karst, Southeast Asia, habitat preference    ตุ๊กกายสามขีด Cyrtodactylus disjunctus L. Lee Grismer, Parinya Pawangkhanant, Sabira S. Idiiatullina, Alexei V. Trofimets, Roman A. Nazarov, Chatmongkon Suwannapoom. Nikolay A. Poyarkov. 2023. A New Species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from the Thai-Malay Peninsula and the Independent Evolution of Cave Ecomorphology on Opposite Sides of the Gulf of Thailand. Zootaxa. 5352(1); 109-136. DOI: 10.11646/zootaxa.5352.1.4  |
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