15 research outputs found

    Coecobrya sirindhornae sp. n., the most highly troglomorphic Collembola in Southeast Asia (Collembola, Entomobryidae)

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    The most highly troglomorphic Collembola of Southeast Asia, Coecobrya sirindhornae sp. n., is described from a cave in Satun province, Thai Peninsula. It is characterised by its large size, extremely elongated antennae, relatively long legs and furca, reduced macrochaetotaxy, very long and slender claw, pointed tenent hair, four sublobal hairs on outer maxillary lobe, and the absence of eyes and pigmentation. A checklist of Thai Coecobrya species and a key to the troglomorphic species of Thailand are provided. Troglomorphy and conservation of cave habitats in the area are discussed

    Araneibatrus phuphaphet sp. nov., a new cavernicolous Pselaphinae from Satun Geopark, southern Thailand (Coleoptera: Staphylinidae: Pselaphinae)

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    Yin, Zi-Wei, Jantarit, Sopark (2019): Araneibatrus phuphaphet sp. nov., a new cavernicolous Pselaphinae from Satun Geopark, southern Thailand (Coleoptera: Staphylinidae: Pselaphinae). Zootaxa 4691 (1): 83-87, DOI: https://doi.org/10.11646/zootaxa.4691.1.

    The genus Cyphoderopsis Carpenter (Collembola: Paronellidae) in Thailand and a faunal transition at the Isthmus of Kra in Troglopedetinae

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    Jantarit, Sopark, Satasook, Chutamas, Deharveng, Louis (2013): The genus Cyphoderopsis Carpenter (Collembola: Paronellidae) in Thailand and a faunal transition at the Isthmus of Kra in Troglopedetinae. Zootaxa 3721 (1): 49-70, DOI: 10.11646/zootaxa.3721.1.

    Canopy ants on the briefly deciduous tree (Elateriospermum tapos Blume) in a tropical rainforest, southern Thailand

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    A year-round investigation of the ant species present in the canopies of the briefly deciduous tree, Elateriospermum tapos Blume was conducted in the tropical rainforest at Khao Nan National Park (KNNP), Nakhon Si Thammarat Province, Southern Thailand during May 2006-March 2007. Three permanent plots of 50x50 m2 were established 500 m apart. In each plot a single plant was randomly selected for fogging at bimonthly intervals. A total of 3,285 individual ants were identified and belonged to 5 subfamilies 31 genera and 123 morphospecies. Ants in the subfamily Myrmicinae were the most dominant species followed by Formicinae, Dolichoderinae, Pseudomyrmicinae and Ponerinae, respectively. In terms of abundanceand number of species, the top four genera were Crematogaster, Camponotus, Polyrhachis and Pheidole, whereasCamponotus(Karavaievia) sp.2, Technomyrmex sp.1, Oecophylla smaragdina (Fabricius),Crematogaster(Crematogaster) sp.7, and Camponotus (Karavaievia)cf. dolichoderoides were dominant in the numbers of individuals. When E. tapos species shed their leaves briefly around February-March, the species richness of canopy ants (P>0.05) did not significantly change. Explanations for this finding are discussed

    Three new species of cave Troglopedetes (Collembola, Paronellidae, Troglopedetinae) from Thailand, with a key to the Thai species

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    International audienceThailand is today the richest country for the genus Troglopedetes Joseph, 1872, with 17 species described from the country. In this study three troglomorphic new species are described from caves in the western region. They are T. spectabilis sp. nov. and T. rungsimae sp. nov. from Kanchanaburi province and T. takensis sp. nov., from Tak province. The three new species share elongated antennae and have the same number of central mac on Th. III and Abd. IV. However, they differ from one another by the combination of: presence of eyes, antennal length, claw morphology, central head macrochaetotaxy and internal row of dental spines. Troglopedetes spectabilis sp. nov. is remarkably different from its congeners by its extreme long appendages, especially the antennae (ratio antenna: head = 5.5). In the second part of the paper the arrangment of antennal chaetotaxy and the diversity of its phaneres is analyzed in the three new species, homologized and compared with those of two other species described from Thailand (T. meridionalis and T. kae). A total of 22 types of chaetae have now been recognized among the species. A new type of S-chaetae for the genus was discovered in this study. There are 5 types of ordinary chaetae, 15 types of S-chaetae, the subapical organite of Ant. IV and scales. A total of 1,107 to 2,183 antennal chaetae on each side were observed, which includes 308-485 S-chaetae, 687-1,402 ordinary chaetae, 72-295 scales and a subapical organite

    Revisiting Lepidonella Yosii (Collembola: Paronellidae): character overview, checklist of world species and reassessment of Pseudoparonella doveri Carpenter

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    International audienceCharacters used in the taxonomy of the genus Lepidonella Yosii, 1960 (Collembola: Paronellidae) are listed and discussed. Several new ones are introduced. An overview of pseudopore patterns across Collembola is presented, with several new locations of these structures across Entomobryomorpha. Their interest at different taxonomic level is underlined. The genus Lepidonella is redefined. The American species L. marimuti Soto Adames & Bellini, 2015 Soto-Adames FN, Bellini BC. 2015. Dorsal chaetotaxy of neotropical species supports a basal position for the genus Lepidonella among scaled Paronellidae (Collembola, Entomobryoidea). Florida Entomologist. 98(1):330–341.[Crossref], [Web of Science ®], , [Google Scholar] is placed in incertae sedis among Lepidonella. Lepidonella species of the world are listed with synonymies and combinations. The Malaysian troglobitic species Pseudoparonella doveri Carpenter, 1933 Carpenter GH. 1933. XIX. Fauna of the Batu caves, Selangor. Journal of the Federated Malay States Museum. 17:217–221. [Google Scholar] is redescribed in detail, with emphasis on its pattern of antennal chaetae, and transferred to the genus Lepidonella. Its close similarity with L. lecongkieti Deharveng & Bedos, 1995 Deharveng L, Bedos A. 1995. Lepidonella lecongkieti n.sp., premier Collembole cavernicole du Vietnam (Collembola, Paronellidae). Bulletin de la Société entomologique de France. 100(1):21–24. [Google Scholar] from southwestern Vietnam caves is underlined. This disjunct distribution is briefly discussed.Revue du genre Lepidonella Yosii (Collembola : Paronellidae) : caractères, liste critique des espèces du monde et ré-assignation de Pseudoparonella doveri Carpenter. Les caractères utilisés dans la taxonomie du genre Lepidonella Yosii, 1960 (Collembola : Paronellidae) sont répertoriés et discutés. Plusieurs nouveaux caractères sont décrits. Une synthèse des patrons de distribution des pseudopores dans la classe des Collemboles est présentée, avec la mise en évidence de nouvelles localisations de ces structures au sein des Entomobryomorpha. Leur intérêt à différents niveaux taxonomiques est souligné. Le genre Lepidonella est redéfini. L’espèce américaine L. marimuti Soto Adames & Bellini, 2015 Soto-Adames FN, Bellini BC. 2015. Dorsal chaetotaxy of neotropical species supports a basal position for the genus Lepidonella among scaled Paronellidae (Collembola, Entomobryoidea). Florida Entomologist. 98(1):330–341.[Crossref], [Web of Science ®], , [Google Scholar] est placée en incertae sedis au sein du genre Lepidonella. Les espèces de Lepidonella du monde sont listées avec synonymies et combinaisons. L’espèce troglobie de Malaisie Pseudoparonella doveri Carpenter, 1933 Carpenter GH. 1933. XIX. Fauna of the Batu caves, Selangor. Journal of the Federated Malay States Museum. 17:217–221. [Google Scholar] est redécrite en détail, en insistant sur son patron de soies antennaires, et transférée dans le genre Lepidonella. Son étroite similarité avec L. lecongkieti Deharveng & Bedos, 1995 Deharveng L, Bedos A. 1995. Lepidonella lecongkieti n.sp., premier Collembole cavernicole du Vietnam (Collembola, Paronellidae). Bulletin de la Société entomologique de France. 100(1):21–24. [Google Scholar] des grottes du sud-ouest du Vietnam est soulignée. Cette distribution disjointe est brièvement commentée

    Theosbaena loko sp. n. a new stygobiotic microshrimp (Thermosbaenacea: Halosbaenidae) from southern Thailand

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    Thermosbaenaceans (Thermosbaenacea: Halosbaenidae) are crustaceans, widespread, and occur in various habitats, including oligohaline or anchialine caves, freshwater, thermal springs, or cold waters. Currently, four families, seven genera, and 45 species are recognized worldwide. During the observation in an isolated limestone of Tham Loko (Loko Cave), Khao Chiason District, Phatthalung Province, the Theosbaena loko n. sp. were found. Theosbaena is the only genus reported in the oriental region. There are only two known species, namely Theosbaena cambodjiana Cals & Boutin 1985 from Kampot province, southern Cambodia, and T. kiatwongchai Rogers & Sanoamuang 2016 discovered in a cave of Takhli district, Nakhon Sawan province, central Thailand. Theosbaena loko n. sp. is the third species recorded in the oriental region.A new species Theosbaena loko n. sp. is described from a limestone cave in Phatthalung province, southern Thailand. The new species differs from its congener by having a telson, 1.8 longer than its breadth, maxilla 1 palp distal segment 4 times longer than the proximal palpomere, and the maxillopodal exopod twice as long as its basal width. This micro shrimp is the third described species of the genus known from Thailand and the Oriental region. A key to the species is given and suggestions for the conservation status of the new species are discussed

    The multiformity of antennal chaetae in Troglopedetes Joseph, 1872 (Collembola, Paronellidae, Troglopedetinae), with descriptions of two new species from Thailand

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    Two new species of the genus Troglopedetes Joseph, 1872 (T. meridionalis sp. nov. and T. kae sp. nov.) are described from caves of the Thai peninsula. This is the first report of the genus south of the Kra Isthmus. The two new species have two rows of dental spines shared by all Thai Troglopedetes. They differ from other members of the genus mainly in the arrangement of dorsal chaetotaxy on head. The antennal chaetotaxy of the two species is analysed in detail in the second part of the paper. All types of antennal chaetae of both new species and their distribution patterns are described for each antennal segment: scales, ordinary chaetae, S-chaetae and subapical organite of Ant. IV. Twenty different types of chaetae are recognised and all except one are present in both species. The total numbers of ordinary chaetae and S-chaetae and their patterns of distribution on antenna are very similar between the two species (483 vs. 518 ordinary chaetae; 207 vs. 208 S-chaetae). Each type of chaetae has its own distribution pattern, markedly contrasted between dorsal and ventral side of antennae, and between antennal segments. This diversity of morphologies and distribution patterns and their similarity between the two species, as well as differences with other species of the same family, suggest that antennal chaetotaxy could provide powerful new characters for the taxonomy of Troglopedetes and related genera
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