Claus, 1879
ANT II in males with two apical articles, more than half length of preceding ART. P I and II weakly subchelate (Tetrathyrus forcipatus 2): dactyl closing against concave distal margin of ART 6. ART 2 of P VI with long ventral margin, without fissure.
Two species; single species in the South Atlantic:
Tetrathyrus forcipatus Claus, 1879