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Tuesday, May 31st, 2022
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| 3:03p | [Botany • 2022] Fordiophyton tereticaule (Melastomataceae: Sonerileae) • A New Species from Yunnan, China
Abstract A new species, Fordiophyton tereticaule, from China, is described and illustrated here based on morphological and molecular evidence. It is morphologically similar to F. faberi in having erect stems, slightly oblique and membranous leaf blades, broadly ovate to suborbicular bracts, and oblong petals, but differs by the terete stems, densely puberulous petioles, and elliptic leaf blades. Our phylogenetic analyses based on plastid genome and nrITS data indicate that this new species is clustered with four Fordiophyton species of Yunnan but placed far apart from F. faberi. An updated key to the genus is also provided. Keywords: phylogeny, Sonerileae, taxonomy, Yunnan
Fordiophyton tereticaule S.Jin Zeng & N.H.Xia, sp. nov. Verbatim name: 圆茎异药花 Diagnosis: Similar to F. faberi in having erect stems, membranous leaf blades, and oblong petals, but differs by the terete (vs. quadrangular) stems, densely puberulous (vs. green and glabrous or shortly setose near leaf blade base) petioles, and elliptic (vs. broadly lanceolate, oblong, ovate, or rarely lanceolate) leaf blades. Distribution and habitat: Fordiophyton tereticaule is only known from Malipo County, Yunnan, China. It grows in broad-leaved evergreen forests at elevations of 1260–1540 m. Etymology: The specific epithet refers to the terete stem.  Si-Jin Zeng, Yi-Hua Tong and Nian-He Xia. 2022. Fordiophyton tereticaule (Melastomataceae), A New Species from China. PhytoKeys. 197: 59-69. DOI: 10.3897/phytokeys.197.82670  | ||||||
| 3:03p | [Botany • 2022] Isotrema putalengense (Aristolochiaceae) • A New Species from northern Vietnam and Two New Combinations in Isotrema
Abstract Isotrema putalengense Luu, Q.B.Nguyen & H.C.Nguyen is described as a new species from northern Vietnam. It looks most morphologically like I. wardianum but is distinguishable by a combination of different leafy and floral characters. Morphological comparison between the new plant and closest species is provided. In addition, combinations of two recently described Aristolochia species are made, namely Isotrema vuquangense (T.V.Do) Luu, Q.B.Nguyen & H.C.Nguyen and Isotrema yachangense (B.G.Huang, Yan Liu & Y.S.Huang) Luu, Q.B.Nguyen & H.C.Nguyen. Keywords: Aristolochia, Isotrema vuquangense, Isotrema yachangense, Pu Ta Leng Mountain, Siphisia
Isotrema putalengense Luu, Q.B.Nguyen & H.C.Nguyen, sp. nov. Diagnosis: The new species is most morphologically similar to I. wardianum in the shape of leaves and flowers but differs in having densely brown villous (vs. abaxially light brown villous) bracteoles, flowers on old woody stems (vs. in axils of leafy shoots), basally truncate perianth limb that is ovoid in front view and with purple apex (vs. basally obtuse, oblong in front view and with yellow apex), indistinct (vs. distinct) utricle from lower tube, U-shaped (vs. V-shaped) tube notch and internally black purple (vs. purple) tube. Etymology: The specific epithet refers to the type locality, Pu Ta Leng Mountain which is part of the Hoang Lien Son Mountain Range and located about 30 km northwest of Vietnam’s highest Mt. Fan Si Pan. Common and vernacular names: Putaleng’s pipevine (Vietnamese name: Phòng kỷ Pu Ta Leng).  New combinations for some species of Isotrema As a result of their study, Zhu et al. (2019a) has already transferred almost all species of Aristolochia subgenus Siphisia to Isotrema. Another four combinations were made for later described species (Wang et al. 2020a). Following this generic concept, here we propose new combinations for the other taxa of the subgenus that were described recently. Isotrema vuquangense (T.V.Do) Luu, Q.B.Nguyen & H.C.Nguyen, comb. nov. ≡ Aristolochia vuquangensis T.V.Do. Phytotaxa 500 (1): 41. 2021. Isotrema yachangense (B.G.Huang, Yan Liu & Y.S.Huang) Luu, Q.B.Nguyen & H.C.Nguyen, comb. nov. ≡ Aristolochia yachangensis B.G.Huang, Yan Liu & Y.S.Huang. PhytoKeys 153: 51. 2020. Quoc Binh Nguyen, Hieu Cuong Nguyen, Duc Binh Tran, Phuong Hanh Nguyen and Hong Truong Luu. 2022. Isotrema putalengense, A New Species of Aristolochiaceae from northern Vietnam and Two New Combinations in Isotrema. PhytoKeys. 197: 71-79. DOI: 10.3897/phytokeys.197.73596 | ||||||
| 3:03p | [Mammalogy • 2022] Macaca selai • A Distinct Phylogenetic Species (Primates: Cercopithecidae) that evolved from the Arunachal Macaque following Allopatric Speciation
Highlights • Arunachal macaque showed ample genetic polymorphism, and evolved into two phylogenetic species. • Allopatric speciation driven by the sela mountain pass. • A new species, Macaca selai described based on phylogenetic species concept. • Novel findings imperative for conservation planning and management of Arunachal macaque. Abstract Arunachal macaque (M. munzala) is an endangered and recently discovered cercopithecine primate from Western Arunachal Pradesh, India. On genetic analyses of Arunachal macaques, we observed spatially distributed substantial inter-species genetic divergence among the samples collected from Arunachal Pradesh. The results suggested that Arunachal macaque evolved into two phylogenetic species about 1.96 mya following allopatric speciation by means of Sela mountain pass in Arunachal Pradesh, India. We describe - Sela macaque (Macaca selai) as a new macaque species that interestingly exhibited high intra-specific genetic variation and also harbors at least two conservation units. Further, we report the past demographic trajectories and quantify genetic variation required for taxonomic clarification. The present study also identifies gap areas for undertaking surveys to document the relic and unknown trans-boundary populations of macaques through multinational, multi-lateral cross border collaboration. Keywords: Arunachal macaque, Sela macaque, Eastern Himalayas, Sela mountain pass, Allopatric speciation, Taxonomic revision    Order Primates Linnaeus, 1758 Superfamily Cercopithecoidea Gray, 1821 Family Cercopithecidae Gray, 1821 Genus Macaca Lacépèpde, 1799 Macaca selai species novum Etymology: The proposed specific name for the taxon is derived from a local tribal woman ‘Sela’. The ‘Sela pass’ named after her who supported Indian soldier during the attack and invasion by Chinese army in Tawang, Arunachal Pradesh. For giving respect to the brave local girl-Sela, we chose her name to the newly defined macaque species which also a phylogenetic divergent of Arunachal macaque.
Avijit Ghosh, Mukesh Thakur, Sujeet K. Singh, Ritam Dutta,Lalit K. Sharma, Kailash Chandra and Dhriti Banerjee. 2022. The Sela Macaque (Macaca selai) is A Distinct Phylogenetic Species that evolved from the Arunachal Macaque following Allopatric Speciation. Molecular Phylogenetics and Evolution. In Press, 107513. DOI: 10.1016/j.ympev.2022.107513 | ||||||
| 3:05p | [Ichthyology • 2022] Ancistrus luzia • A New Species of Ancistrus (Siluriformes: Loricariidae) from Tapajós and Xingu Basins, Brazil
Abstract A new Ancistrus species is described from Tapajós and Xingu river basins. It is distinguished from its congeners by the singular body color pattern, consisting of dark vermiculated stripes almost all over the body, and also by combination of features as a narrow head, large internostril distance, and absence of rows of enlarged odontodes on the lateral plates. In addition, the new species is distinguished from congeners that inhabit the rio Tapajós basin by the presence of a fully-developed adipose fin (vs. adipose fin absent in Ancistrus parecis and A. tombador, and vestigial adipose fin or absent in A. krenakarore). It differs from A. ranunculus, also from the rio Xingu, by the color pattern, smaller body size, smaller gill opening, and narrower cleithral width. The new taxon adds a new record to the list of species shared among the Xingu and Tapajós basins. Keywords: Amazon; Brazilian Shield; Bristlenose pleco; Hypostominae; Taxonomy  
Ancistrus luzia, new species Ancistrus L 159. ―Stawikowski, 1994:145 [DATZ magazine, new imports from Brazil, figs. 6 and 7]. Ancistrus sp. “lineolatus”. ―Ohara et al., 2017:259 [identification guidebook from Teles Pires]. Diagnosis. Ancistrus luzia is distinguished from its congeners, except A. claro Knaack, 1999 and A. centrolepis Regan, 1913, by the singular body color pattern, consisted of dark-vermiculated stripes on head, dorsal and lateral plates of trunk (vs. body uniformly colored or with light or dark spots or blotches over head or dorsal and lateral plates of trunk). Ancistrus luzia is distinguished from A. claro by its narrower head (head width 30.8–35.1% vs. 35.2–38.2% HL) and greater internostril distance (18.7–23.7% vs. 14.9–17.0% HL), and from A. centrolepis by the absence of rows of greatly enlarged odontodes on the lateral plates (vs. presence of one to three rows of enlarged odontodes on the lateral plates). Juveniles of A. leucostictus (Günther, 1864) might show lines similar to A. luzia, but color changes to light, large spots as specimens grow. In addition, the new species is distinguished from its congeners that inhabit the Tapajós basin by the presence of adipose fin fully developed (vs. adipose fin absent in A. parecis Fisch-Muller, Cardoso, da Silva & Bertaco, 2005, A. tombador Fisch-Muller, Cardoso, da Silva & Bertaco, 2005, and vestigial adipose fin or absent in A. krenakarore de Oliveira, Rapp Py-Daniel & Zuanon, 2016). Ancistrus luzia differs from A. ranunculus Muller, Rapp Py-Daniel & Zuanon, 1994, the only described species from the rio Xingu, by the smaller body size in adults, smaller gill opening (HL/interbranchial distance equals to 1.7 to 2.0 vs. 2.3 to 3.9) and narrower cleithral width (SL/cleithral width equals to 2.8–3.2 vs. 2.1–2.9).
Etymology. Named after “Luzia” (Lapa Vermelha IV Hominid 1), a female Homo sapiens skeleton and one of the oldest human remains found in the Americas (11,000–11,500 years before present), in 1974 and 1975 during excavations coordinated by the French archaeologist Annette Lamin-Emperaire (1917–1977) from the site of Lapa Vermelha IV, Lagoa Santa region, municipality of Pedro Leopoldo, state of Minas Gerais, Brazil (Neves et al., 1999). The skeleton is deposited at Museu Nacional Biological Anthropology collection (catalogue number 01959), Universidade Federal do Rio de Janeiro, and was recovered again after the fire that hit the institution on September 2, 2018 by Museu Nacional Rescue team, becoming a symbol of institutional hope and resilience. A noun in apposition. Emanuel B. Neuhaus, Marcelo R. Britto, José Luís O. Birindelli and Leandro M. Sousa. 2022. A New Species of Ancistrus (Siluriformes: Loricariidae) from Tapajós and Xingu Basins, Brazil. Neotrop. ichthyol. 20(1) • DOI: 10.1590/1982-0224-2021-0129 Resumo: Uma nova espécie de Ancistrus é descrita das bacias dos rios Tapajós e Xingu. Distingue-se de suas congêneres pelo padrão de colorido único, que consiste em listras vermiculadas escuras em quase todo o corpo, e também pela combinação de características como cabeça estreita, maior distância entre as narinas e ausência de séries de grandes odontódeos nas placas laterais. Adicionalmente, a nova espécie pode ser diferenciada de suas congêneres da bacia do rio Tapajós pela presença de uma nadadeira adiposa totalmente desenvolvida (vs. nadadeira adiposa ausente em Ancistrus parecis e A. tombador, nadadeira adiposa vestigial ou ausente em A. krenakarore). Ela difere de A. ranunculus, a única outra espécie do rio Xingu, pelo padrão de colorido, menor tamanho corporal, menor abertura branquial e menor largura entre os cleitros. O novo táxon adiciona um novo registro à lista de espécies compartilhadas entre as bacias do Xingu e Tapajós. Palavras-chave: Amazônia; Cascudo; Escudo Brasileiro; Hypostominae; Taxonomia | ||||||
| 3:06p | [Botany • 2022] Begonia erythrofolia (Begoniaceae, sect. Platycentrum) • A New Species from southeastern Yunnan, China
Abstract Begonia erythrofolia, a new species of Begonia sect. Platycentrum (Begoniaceae) from Yunnan, China is described and illustrated. Morphologically, it is most similar to B. dielsiana and B. edulis, but differs in having broadly ovate leaves which are undivided or shallowly triangular lobed, crimson on the abaxial leaf surface, and more veins in the lamina. The new species also resembles B. subhowii in its similar leaf shape and in having erect stems when flowering, but differs in its larger leaf size, and smaller bracts and flowers. Keyword: Begonia daweishanensis, B. dielsiana, B. edulis, B. siamensis, B. subhowii, Flora of Yunnan, new taxon, taxonomy 
  Begonia erythrofolia Lei Cai, D.M.He & W.G.Wang, sp. nov. 红背秋海棠 Diagnosis: The new species is mostly similar to Begonia dielsiana, B. edulis and B. subhowii in having similar leaf shape and with erect stems when flowering, but differs from B. dielsiana in having leaves undivided or with 3 very shallow lobes (vs. 5–10 lobes shallowly divided), smaller pistillate flowers (21–28 mm vs. 40–50 mm in diameter), the number of pistillate tepals (5 vs. 6, rarely 5) and the color of the lower surface of leaf blade (dark red vs. green); differs from B. edulis in being a shorter plant (16–60 cm vs. 30–150 cm) with smaller leaves (12–30 × 8–25 cm vs. 12.8–43 × 14.5–40), blade undivided or with 3 very shallow lobes (vs. 5–13 shallowly lobed, divided to ca. 1/3 of leaf length); differs from B. subhowii in being a larger plant (16–60 cm vs. 13–28 cm) with leaf blades 12–30 × 8–25 cm (vs. 4.5–9 × 10–11 cm), and smaller bracts (18–26.7 mm vs. ca. 50 mm), and the color of leaf blade (upper surface dark green, abaxially red vs. green on both sides).   Etymology: The epithet “erythrofolia” is derived from two Latin words “erythro” meaning “red colored” and “folia” meaning “leaves” referring to its leaves which are dark red on the abaxial surface. Distribution and ecology: Begonia erythrofolia is endemic to China, currently known only from the type locality in karst region of Yunnan Province, Wenshan City, Xinjie Town, Caoguoshan Village, Qiqiutian. The species grows in humid rocky crevices under limestone forest. Lei Cai, De-Ming He, Tai-Wen Huang, Zhi-Ling Dao and Wen-Guang Wang. 2022. Begonia erythrofolia, A New Species of Begoniaceae from southeastern Yunnan, China. Taiwania. 67(1); 110-114. DOI: 10.6165/tai.2022.67.110 |
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