On two new species of potamid and sesarmid crabs (Decapoda, Brachyura) from caves in Myanmar

in Crustaceana
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Two new species of brachyuran crabs are represented in a recent collection from caves in southern Myanmar [= Burma]. Demanietta burmanica sp. nov. (Potamidae) is the third species of Demanietta Bott, 1966, recorded from the country, and is closest to D. renongensis (Rathbun, 1904) from Thailand, but differs in the form of the carapace and details of the male first gonopod structure. Pseudosesarma brehieri sp. nov. (Sesarmidae) is allied to P. edwardsii (De Man, 1887) and P. crassimanum (De Man, 1887), both from the Mergui Archipelago, but can be easily distinguished by the distinctive form of its male first gonopod.

On two new species of potamid and sesarmid crabs (Decapoda, Brachyura) from caves in Myanmar

in Crustaceana

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References

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Figures

  • View in gallery

    Demanietta burmanica sp. nov., holotype: male (44.5 × 32.8 mm) (ZRC 2016.0591), Myanmar. A, overall dorsal view; B, dorsal view of carapace; C, left third maxilliped.

  • View in gallery

    Demanietta burmanica sp. nov., holotype: male (44.5 × 32.8 mm) (ZRC 2016.0591), Myanmar. A, frontal view of cephalothorax; B, outer view of chelae; C, anterior thoracic sternum and pleon; D, pleon.

  • View in gallery

    Overall dorsal view. A, Demanietta burmanica sp. nov., male (17.8 × 14.0 mm) (ZRC 2016.0592), Myanmar; B, Demanietta renongensis (Rathbun, 1904), male (37.1 × 27.5 mm) (ZRC 2012.1053), Phuket, Thailand.

  • View in gallery

    Pseudosesarma brehieri sp. nov., holotype: male (17.4 × 15.7 mm) (ZRC 2016.0593), Myanmar. A, overall dorsal view; B, dorsal view of carapace; C, left third maxilliped.

  • View in gallery

    Pseudosesarma brehieri sp. nov., holotype: male (17.4 × 15.7 mm) (ZRC 2016.0593), Myanmar. A, frontal view of cephalothorax; B, anterior thoracic sternum and pleon; C, outer view of chelae.

  • View in gallery

    Pseudosesarma brehieri sp. nov., paratype female (14.9 × 13.4 mm) (ZRC 2016.0594), Myanmar. A, overall habitus; B, dorsal view of carapace; C, anterior thoracic sternum and pleon; D, thoracic sternum and vulvae.

  • View in gallery

    A-D, Demanietta burmanica sp. nov., holotype: male (44.5 × 32.8 mm) (ZRC 2016.0591), Myanmar; E-I, P. brehieri sp. nov., holotype: male (17.4 × 15.7 mm) (ZRC 2016.0593), Myanmar. A, H, ventral view of left G1; B, ventral view of terminal segment of left G1; C, dorsal view of terminal segment of left G1; D, I, left G2; E, male pleonal somites 1-6 and telson; F, dorsal view of left G1; G, ventro-mesial view of left G1. Scales: A-D, F-I = 1.0 mm; E = 4.0 mm.

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