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      A new species of Rangabradya (Copepoda, Harpacticoida, Ectinosomatidae) from a cave in Satun Province, southern Thailand

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          Abstract

          A representative of the family Ectinosomatidae was discovered in a temporary pool in a cave in the Satun Province, southern Thailand. Based on the characteristics of the antennary exopod, armature of the female fifth leg, and configuration of the male sixth leg, a new species of the genus Rangabradya was identified, representing the first record of the genus in the continental waters of Thailand and in Southeast Asia. The new species can be distinguished from Rangabradya indica by the configurations of the fifth and the sixth legs in both sexes, the body ornamentation of the urosomite, and the armature of the mouthparts. These structures show a more primitive state in the new species. Accordingly, a new subgeneric rank in the genus Rangabradya , Siamorangabradya subgen. nov, was established to accommodate the Thai species and Rangabradya ( Siamorangabradya) wongkamhaengae subgen. et sp. nov. was described. Also, the key to all 23 genera of the family was updated.

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          Most cited references 17

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          Three new species of Coecobrya (Collembola: Entomobryidae) from caves in the Thai Peninsula.

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            Cyrtodactylus wangkulangkulae (Squamata: Gekkonidae), a new Bent-toed Gecko from Satun Province, southern Thailand.

            We describe a new Cyrtodactylus from Manang District, Satun Province, southern Thailand, based on an adult female having a snout-vent length of 73.9 mm, a long tail (1.34 times snout-vent length), a complex blotched and banded dorsal pattern with four irregularly shaped dark bands between limbs insertions, bluish-grey iris, discontinuous series of enlarged poreless femoral and precloacal scales, 10 regularly arranged dorsal tubercle rows, 38 ventral scale rows between ventrolateral skin folds, transversely enlarged subcaudal plates, and no precloacal groove.
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              A new species of Boholina ( Crustacea , Copepoda , Calanoida ) and a first record for stygobiotic calanoid fauna from a cave in Thailand

              Abstract A new species of Calanoida belonging to the genus Boholina Fosshagen & Iliffe, 1989 was found in a freshwater pool within a cave of the Satun province, South Thailand. It is the first record of the genus and of a stygobiotic representative of calanoid fauna in this country. The new species is most similar to B. crassicephala Fosshagen & Iliffe, 1989, based on position of genital pores, structures of P4 and P5 in both sexes, relative length of subapical spine vestige on the male right P5, and shape of the male left P5 endopods. However, this new species is distinguished from its known congeners by: (1) relatively longer distal outer spines on the male right P5 exopods, (2) smaller endopods of the male left P5 and (3) elongated apical spines on the distal exopodal segment of the female P4 and P5. Furthermore, the distinctive characteristic of the Thai Boholina is the presence of inner minute seta on the distal segment of the male right P5 exopod. Detailed descriptions of the new species and a key to all six known species of the genus Boholina is provided.
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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
                2021
                04 January 2021
                : 1009
                : 45-66
                Affiliations
                [1 ] School of Biology, Faculty of Science and Technology, Nakhon Ratchasima Rajabhat University, Nakhon Ratchasima 30000, Thailand Nakhon Ratchasima Rajabhat University Nakhon Ratchasima Thailand
                [2 ] Applied Taxonomic Research Center and Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand Khon Kaen University Khon Kaen Thailand
                Author notes
                Corresponding author: Chaichat Boonyanusith (chaichat.b@nrru.ac.th)

                Academic editor: Kai Horst George

                Article
                54554
                10.3897/zookeys.1009.54554
                7801367
                33505194
                Chaichat Boonyanusith, Sujeephon Athibai

                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
                the Office of the Higher Education Commission, Thailand (2558A13562002) and the Research and Academic Affairs Promotion Fund (RAAPF), Faculty of Science, Khon Kaen University, Fiscal year 2017.
                Categories
                Research Article
                Copepoda
                Systematics
                Taxonomy
                Cenozoic
                Neogene
                Asia
                Thailand

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