Parathelphusa convexa is a species of gecarcinucid crab.

It is native to Java,[1] and lives on rice paddies and rivers.

They have a dark brown trapezium-shaped carapace with three teeth and small eyes, with the third maxilliped closed shut.

[3] The corpses of this crab is used as a pest control as its smell attracts Leptocorisa oratoria, which eats rice ears.

This Eubrachyura article is a stub.