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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
                (View ORCID Profile)
                Journal
                ZooKeys
                ZK
                Pensoft Publishers
                1313-2970
                1313-2989
                January 04 2021
                January 04 2021
                : 1009
                : 45-66
                Article
                10.3897/zookeys.1009.54554
                © 2021

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