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

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          Abstract

          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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          Most cited references 47

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          The labial palp in collembola

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            Suprageneric Classification of Collembola Entomobryomorpha

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              Systematic revision of Entomobryidae (Collembola) by integrating molecular and new morphological evidence

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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2020
                06 November 2020
                : 987
                : 1-40
                Affiliations
                [1 ] Excellence Center for Biodiversity of Peninsular Thailand, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
                [2 ] Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
                [3 ] Institut de Systématique, Évolution, Biodiversité (ISYEB) – UMR 7205 CNRS, MNHN, UPMC, EPHE, Museum national d’Histoire naturelle, Sorbonne Université, 45 rue Buffon, CP50, F-75005 Paris, France
                Author notes
                Corresponding author: Sopark Jantarit ( fugthong_dajj@ 123456yahoo.com )

                Academic editor: W. M. Weiner

                Article
                54234
                10.3897/zookeys.987.54234
                7666072
                Sopark Jantarit, Katthaleeya Surakhamhaeng, Louis Deharveng

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Funding
                Funded by: Thailand Research Fund 501100004396 http://doi.org/10.13039/501100004396
                Categories
                Research Article
                Animalia
                Arthropoda
                Collembola
                Entognatha
                Entomobryoidea
                Entomobryomorpha
                Hexapoda
                Invertebrata
                Paronellidae
                Systematics
                Taxonomy
                Cenozoic
                Asia
                Far East
                Thailand

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