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Thursday, August 4th, 2022
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| 9:28a | [Arachnida • 2022] Bowie gen. nov. • A Diverse Lineage of Ground-dwelling Spiders (Araneae: Ctenidae: Cteninae) Occurring from the Himalayas to Papua New Guinea and northern Australia
Abstract A new genus in the spider family Ctenidae Keyserling, 1877 is described from Asia: Bowie gen. nov. belongs to the subfamily Cteninae and all members formerly described were placed so far in the genus Ctenus Walckenaer, 1805. After morphological as well as preliminary molecular characters were checked, it was clear that a new genus had to be erected to accommodate this predominantly Asian lineage of ground-dwelling spiders. As is the case in most Ctenidae generally, it was not easy to find apomorphic characters diagnosing this new taxon. Therefore, a combination of morphological characters is used to define all congeners. An important and newly introduced character in this respect is –among others– the fused patellar crack of the male palp. Forty-nine valid species are transferred to the new genus (first country/province records of particular species underlined): Bowie martensi (Jäger, 2012) comb. nov. (Nepal), B. bomdilaensis (Tikader & Malhotra, 1981) comb. nov. (India), B. indicus (Gravely, 1931) comb. nov. (India), B. cladarus (Jäger, 2012) comb. nov. (Myanmar), B. pingu (Jäger & Minn, 2015) comb. nov. (Myanmar), B. natmataung (Jäger & Minn, 2015) comb. nov. (Myanmar), B. sikkimensis (Gravely, 1931) comb. nov. (India), B. ramosus (Thorell, 1887) comb. nov. (Myanmar), B. goaensis (Bastawade & Borkar, 2008) comb. nov. (India), B. himalayensis (Gravely, 1931) comb. nov. (India), B. meghalayaensis (Tikader, 1976) comb. nov. (India), B. narashinhai (Patel & Reddy, 1988) comb. nov. (India), B. ceylonensis (F.O. Pickard-Cambridge, 1897) comb. nov. (Sri Lanka), B. andamanensis (Gravely, 1931) comb. nov. (Andaman Islands), B. kapuri (Tikader, 1973) comb. nov. (Andaman Islands), B. cochinensis (Gravely, 1931) comb. nov. (India), B. thorelli (F.O. Pickard-Cambridge, 1897) comb. nov. (Sri Lanka), B. lishuqiang (Jäger, 2012) comb. nov. (China: Sichuan), B. banna (Yao & Li in Chu et al. 2022) comb. nov. (China: Yunnan), B. theodorianum (Jäger, 2012) comb. nov. (Thailand, Laos, Vietnam), B. robustus (Thorell, 1897) comb. nov. (Myanmar, Thailand, Laos), B. yaeyamensis (Yoshida, 1998) comb. nov. (Taiwan), B. yulin (Yao & Li in Chu et al. 2022) comb. nov. (China: Yunnan), B. simplex (Thorell, 1897) comb. nov. (Myanmar, Thailand, Laos), B. bayeri (Jäger 2012) comb. nov. (Laos), B. holthoffi (Jäger, 2012) comb. nov. (Laos), B. saci (Ono, 2010) comb. nov. (Vietnam), B. floweri (F.O. Pickard-Cambridge, 1897) comb. nov. (Malaysia Peninsula), B. argentipes (Hasselt, 1893) comb. nov. (Malaysia Peninsula, Singapore, Indonesia: Sumatra), B. palembangensis (Strand, 1906) comb. nov. (Indonesia: Sumatra), B. angigitanus (Roewer, 1938) comb. nov. (Papua New Guinea), B. pulvinatus (Thorell, 1890) comb. nov. (Malaysia: Sarawak), B. hosei (F.O. Pickard-Cambridge, 1897) comb. nov. (Malaysia: Sarawak, Brunei), B. monaghani (Jäger, 2013) comb. nov. (Laos), B. javanus (Pocock, 1897) comb. nov. (Indonesia: Sumatra, Java, Bali), B. fungifer (Thorell, 1890) comb. nov. (Malaysia Peninsula), B. valvularis (Hasselt, 1882) comb. nov. (Indonesia: Sumatra), B. bicostatus (Thorell, 1890) comb. nov. (Malaysia: Sarawak), B. bantaengi (Merian, 1911) comb. nov. (Indonesia: Sulawesi), B. bowonglangi (Merian, 1911) comb. nov. (Indonesia: Sulawesi), B. celebensis (Pocock, 1897) comb. nov. (Indonesia: Sulawesi), B. sagittatus (Giltay, 1935) comb. nov. (Indonesia: Sulawesi), B. kochi (Simon, 1897b) comb. nov. (Indonesia: West Papua), B. sarawakensis (F.O. Pickard-Cambridge, 1897) comb. nov. (Malaysia: Sarawak), B. philippinensis (F.O. Pickard-Cambridge, 1897) comb. nov. (Philippines), B. aruanus (Strand, 1911) comb. nov. (Indonesia: Maluku), B. angularis (Roewer, 1938) comb. nov. (Indonesia: Maluku), B. rufisternis (Pocock, 1898) comb. nov. (Papua New Guinea: New Britain), and B. corniger (F.O. Pickard-Cambridge, 1898) comb. nov. (South Africa). For thirty-two species, illustrations of their respective copulatory organs, as well as habitus photos, are provided. Fifty-five new species are described, these are listed, together with the already described species, according to their geographic occurrence and to their affiliation to species groups as far as the latter could be recognised (type species indicated by an asterisk): Bowie hunkydory spec. nov. (Nepal), B. ziggystardust spec. nov. (Nepal), B. ladystardust spec. nov. (Nepal), B. aladdinsane spec. nov. (India), B. majortom spec. nov. (Nepal), B. jeangenie spec. nov. (India), B. heroes spec. nov. (India), B. fascination spec. nov. (Vietnam), B. low spec. nov. (Thailand), B. dodo spec. nov. (Vietnam), B. stationtostation spec. nov. (Myanmar), B. candidate spec. nov. (Vietnam), B. diamonddogs spec. nov. (Vietnam), B. yassassin spec. nov. (Taiwan), B. bemywife spec. nov. (Thailand), B. subterraneans spec. nov. (Thailand), B. afterall spec. nov. (Thailand), B. warszawa spec. nov. (Thailand), B. artdecade spec. nov. (Cambodia), B. bigbrother spec. nov. (Vietnam), *B. rebelrebel spec. nov. (Vietnam), B. youngamericans spec. nov. (Vietnam), B. right spec. nov. (Vietnam), B. stay spec. nov. (Vietnam), B. fame spec. nov. (Vietnam), B. win spec. nov. (Vietnam), B. joethelion spec. nov. (Malaysia Peninsula), B. mossgarden spec. nov. (Malaysia Peninsula), B. neukoeln spec. nov. (Malaysia Peninsula), B. scarymonsters spec. nov. (Indonesia: Sumatra), B. teenagewildlife spec. nov. (Indonesia: Sumatra), B. letsdance spec. nov. (Indonesia: Java), B. crystaljapan spec. nov. (Indonesia: Sumatra), B. tonight spec. nov. (Malaysia: Sarawak), B. catpeople spec. nov. (Malaysia: Sabah), B. ricochet spec. nov. (Indonesia: Kalimantan), B. fashion spec. nov. (Malaysia Peninsula), B. withinyou spec. nov. (Malaysia: Sarawak), B. abdulmajid spec. nov. (Singapore), B. blackout spec. nov. (Malaysia Peninsula), B. modernlove spec. nov. (Malaysia: Sabah), B. chinagirl spec. nov. (Malaysia: Sabah), B. withoutyou spec. nov. (Malaysia: Sabah), B. magicdance spec. nov. (Indonesia: Sulawesi), B. bluejean spec. nov. (Malaysia: Sabah), B. criminalworld spec. nov. (Malaysia: Sabah), B. shakeit spec. nov. (Malaysia: Sabah), B. ashestoashes spec. nov. (Indonesia: Kalimantan), B. underground spec. nov. (Indonesia: Kalimantan), B. lodger spec. nov. (Philippines), B. redsails spec. nov. (Philippines), B. thenextday spec. nov. (Indonesia: Papua), B. lazarus spec. nov. (Papua New Guinea), B. thiesi spec. nov. (Papua New Guinea) and B. blackstar spec. nov. (Papua New Guinea). Formerly unknown sexes are described for the first time for the following species: Bowie martensi comb. nov. (female), B. indicus comb. nov. (only male RTA tip), B. narashinhai comb. nov. (male), B. argentipes comb. nov. (female) and B. celebensis comb. nov. (male). Fourteen species groups are proposed on the basis of morphological characters: cladarus-species group (17 species), robustus-species group (14 species), bemywife-species group (2 species), rebelrebel-species group (10 species), youngamericans-species group (3 species), floweri-species group (3 species), scarymonsters-species group (2 species), teenagewildlife-species group (2 species), argentipes-species group (10 species), javanus-species group (5 species), chinagirl-species group (11 species), shakeit-species group (5 species), lodger-species group (3 species) and blackstar-species group (7 species). Thus, 93 species are grouped, leaving 11 species without a current assignment to any of these groups. Ctenus kandyensis Kim & Ye, 2014 syn. nov. is recognised as a junior synonym of Bowie thorelli comb. nov., and C. calcarifer F.O. Pickard-Cambridge, 1902 syn. nov. as junior synonym of B. sarawakensis comb. nov. Five species previously placed in Ctenus are considered nomina dubia, four of them are transferred to Bowie gen. nov., one to Nilus: Bowie barbatus (Thorell, 1895) comb. nov., B. tumidulus (Simon, 1887b) comb. nov., B. flavidus (Hogg, 1922) comb. nov., B. pollii (Hasselt, 1893) comb. nov. and Nilus marginatus (Walckenaer, 1847) comb. nov. Beside the latter species, three species are transferred from Ctenus, all of them to Anahita: A. periculosa (Bristowe, 1931) comb. nov., A. dangsa (Reddy & Patel, 1994) comb. nov. and A. tuniensis (Patel & Reddy, 1988) comb. nov. All in all, Bowie gen. nov. is the second largest genus within the family Ctenidae, with 108 species in total including nomina dubia. It occurs from Nepal in the Himalayas and South India across large parts of South and South East Asia to Papua New Guinea. One undescribed species is known from northern Australia (Queensland). Representatives are known to live in the leaf litter of forests, with most species having small distribution ranges, usually occurring within a 100 km radius. With this revision, the family Ctenidae contains now 586 species and 48 genera, and the number of species assigned to the genus Ctenus, so far used as nomenclatural “waste bin”, is reduced to 164. Keywords: Araneae, Systematics, Taxonomy, revision, first records, new species, unknown sexes, transfers, South Asia, Southeast Asia, Queensland  Peter Jäger. 2022. Bowie gen. nov., A Diverse Lineage of Ground-dwelling Spiders Occurring from the Himalayas to Papua New Guinea and northern Australia (Araneae: Ctenidae: Cteninae). Zootaxa. 5170(1); 1-200. DOI: 10.11646/zootaxa.5170.1.1 | |||||||||
| 10:13a | [Herpetology • 2022] Allobates kamilae • A New Nurse Frog of the Allobates tapajos Species Complex (Anura: Aromobatidae) from the upper Madeira River, Brazilian Amazonia
Abstract Cryptic diversity is extremely common in widespread Amazonian anurans, but especially in nurse frogs of the genus Allobates. There is an urgent need to formally describe the many distinct but unnamed species, both to enable studies of their basic biology but especially to facilitate conservation of threatened environments in which many are found. Here, we describe through integrative taxonomy a new species of the Allobates tapajos species complex from the upper Madeira River, southwestern Amazonia. Species delimitation analyses based on molecular data are congruent and delimit five candidate species in addition to A. tapajos sensu stricto. The new species is recovered as sister to A. tapajos clade F, a candidate species from Teles-Pires River, southeastern Amazonia. The new species differs from nominal congeners in adult and larval morphology and in male advertisement call. Egg deposition sites differ between east and west banks of the upper Madeira River, but there is no evidence of corresponding morphologic or bioacoustic differentiation. The new species appears to be restricted to riparian forests; its known geographic range falls entirely within the influence zone of reservoirs of two large dams, which underscores the urgent need of a conservation assessment through long-term monitoring. This region harbors the richest assemblage of Allobates reported for Brazilian Amazonia, with six nominal species and four additional candidate species awaiting formal description.
Allobates kamilae sp. nov. Allobates sp. 1: Dias-Terceiro et al. (2015), Dayrell et al. (2021). Allobates tapajos “Allobates_63”: Vacher et al. (2020), SupInfo 4. Allobates aff. tapajos: Moraes & Lima (2021), Silva et al. (2022). Allobates aff. tapajos “3”: Réjaud et al. (2020), Fig. 1 and Figs. S1–S3. Generic placement: The new species is assigned unambiguously to the genus Allobates because the tip of finger IV does not reach the distal subarticular tubercle of finger III, toe IV with basal webbing and lateral fringe on its preaxial side, pale paracloacal marks (characters 5, 43 and 50 of Grant et al., 2017), respectively) and its phylogenetic relationship as assessed by molecular data. Diagnosis: A small-bodied species of Allobates characterized by the following combination of characters: SVL 14.5–17.4 mm in males (n = 49) and 15.2–17.8 mm in females (n = 26); finger III not swollen in males; one subarticular tubercle on finger IV; basal webbing between toes II and III absent; EN/WFD = 2.67–3.67 in females; WFD/WTD = 0.67–1.00 and HANDIV/WFD = 3.58–5.60 in males; dorsal surface of thigh lacks red or yellow marks; pale dorsolateral stripe absent in preservative; white ventrolateral stripe absent in life; belly without dark and white marbling; throat in males bright yellow with scattered melanophores; throat in females with scattered melanophores; dorsal surface of fingers brown to orange-brown; advertisement calls predominantly arranged in groups of 2–5 unpulsed notes; first (135 ms ± 24) and last (142 ms ± 31) inter-note intervals are of similar duration and longer than note duration; dominant frequency 5,211–6,201 Hz; tadpoles have an oral disc and spiracle; five short papillae on each side of the lateral margin of the anterior labium; long papillae on the posterior labium; a “V”-shaped lower jaw sheath; and labial tooth rows P-3 and P-1 of similar length. Etymology: The specific epithet kamilae honors Kamila Xavier Amaral, a very young and enthusiastic biologist who passed away prematurely after battling cancer. While an undergraduate student, Kamila was being trained in Allobates taxonomy by A. P. Lima. She was the first person to study the new species described in this study.
Conclusions: The Allobates tapajos species complex comprises six species distributed in southwestern, southeastern, eastern and northeastern Amazonia. Yet, sampling remote and poorly explored areas will likely reveal additional candidate species (e.g., Silva et al., 2022). Although A. kamilae resembles A. tapajos sensu stricto in morphology, these species nevertheless are easily diagnosed. Acoustic differentiation between these species, however, is achieved mainly through detailed comparisons of temporal traits within the same call arrangement. Recognition of additional candidate species in the A. tapajos species complex—as well as other species complexes in the genus—will likely require such fine-scale analyses. Allobates kamilae is known only from riparian forests in the impact zone of two large dams in the upper Madeira River, underscoring the urgent need for comprehensive assessments of its geographic distribution and conservation status. Miquéias Ferrão, James Hanken and Albertina P. Lima. 2022. A New Nurse Frog of the Allobates tapajos Species Complex (Anura: Aromobatidae) from the upper Madeira River, Brazilian Amazonia. PeerJ. 10:e13751 DOI: 10.7717/peerj.13751 |
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