Claus, 1879
Length 3 mm. Body with sculptured cuticle, but surface of P V, VI and UR smooth. Posterodistal process of ART 5 of P II only 0.7 times as long as ART 6 (Amphithyrus similis 1). ART 2 of P V only slightly shorter than distal ART combined. P VII consisting of narrow ART 2 with rounded top, sometimes 1-2 rudimentary distal ART. Telson with produced top, almost twice as long as fused (II+III) urosomite (Amphithyrus similis 2).