Hydrothelphusa

Abstract

Key to the species of Hydrothelphusa 1 Inferior margins of merus of pereiopod 1 with either large teeth or large granules; anterior carapace texture distinctly granular with short carinae................................................................................................... 2 - Inferior margins of merus of pereiopod 1 either smooth or faintly granular; anterior carapace texture completely smooth.............................................................................................................................................. 4 2 Frontal margin clearly toothed; front horizontal (not deflexed); suborbital margin with large pointed teeth; suborbital region of carapace sidewall smooth (Cumberlidge & Sternberg 2002: Fig. 1 A).................................................................................................................................................................................. H. agilis - Frontal margin granular; front moderately deflexed; suborbital margin granular; suborbital region of carapace sidewall granular................................................................................................................................. 3 3 Subhepatic regions of carapace sidewall heavily granulated..................................... H. madagascariensis - Subhepatic region of carapace sidewall smooth........................................................................ H. vencesi 4 Exorbital, epibranchial teeth both slim, long, pointed; distinct gap between epigastric, postorbital crests (Cumberlidge & Sternberg 2002: Fig. 1 C).................................................................... H. bombetokensis - Exorbital, epibranchial teeth both low, blunt; epigastric, postorbital crests fused forming horizontal postfrontal crest (Cumberlidge & Sternberg 2002: Fig. 1 D)............................................................ H. goudotiPublished as part of Cumberlidge, Neil, Marijnissen, Saskia A. E. & Thompson, Jonelle, 2007, Hydrothelphusa vencesi, a new species of freshwater crab (Brachyura: Potamoidea: Potamonautidae) from southeastern Madagascar., pp. 61-68 in Zootaxa 1524 on page 67, DOI: 10.5281/zenodo.17749