Inlethelphusa Yeo & Ng, 2007

Ng, Peter K. L., Mar, Win & Yeo, Darren C. J., 2020, On the taxonomy of the endemic Inle Lake crab, Inlethelphusa acanthica (Kemp, 1918) (Crustacea: Brachyura: Potamidae) of Myanmar, Raffles Bulletin of Zoology 68, pp. 453-463 : 454

Inlethelphusa Yeo & Ng, 2007

Type species. Potamon (Potamon) acanthicum Kemp, 1918 , by monotypy.

Diagnosis. Carapace broader than long, relatively low; dorsal surface gently convex; epigastric cristae low, distinct, not sharp, anterior to postorbital cristae, distinctly separated from postorbital cristae by groove; postorbital cristae low, blunt, not confluent with epibranchial teeth; external orbital angle well developed, separate from rest of anterolateral margin by deep cleft; epibranchial tooth well developed, spiniform; anterolateral margins prominently serrated, with anterior serrations larger; antennular fossae subrectangular, broad; epistome posterior margin with low but distinct median tooth; endostomial ridge absent. Third maxilliped with long exopod, with long flagellum. Ambulatory legs short; merus without subdistal spine on dorsal margin. Suture between male thoracic sternites 2 and 3 distinct; thoracic sternite 8 completely separated by a longitudinal medial line; sternopleonal cavity almost reaching imaginary line joining anterior edges of cheliped bases; male pleon triangular. G1 subterminal segment with distal third bent outward, appears neck-like, being distinctly tapered or constricted; G1 terminal segment slender, elongate, tubular to tapering, tip truncate or sharp, upcurved, dorsal flap absent. G2 longer than G1, distal segment distinctly less than half length of basal segment.