Carapace: Smooth, 1.16 times longer than broad, with a total of 34 setae, including 6 on anterior margin and 8 on posterior margin; without eyesoreyespots; epistome very small, triangular.
chinaca-vernicola has a single small eyespot without lens on each side), epistome triangular (rounded in B.
13) strongly prominent and dentate, with a rudimentary epistome. Anophthalmic.
31): subquadrate, distinctly longer than broad, weakly constricted posteriorly; medial part of anterior margin prominent, without a well-defined epistome and strongly dentate (Fig.
For example, the ocular area becomes broadened with increasing width of the carapace; the subocular plate and the epistome
are gradually projected forward and the eyestalks degenerate.
Anterior and posterior margins of carapace procurved; anterior margin with shallow median notch (emargination), without median projection (epistome
9) 0.94-1.11 [male], 0.97-1.00 [female] times longer than broad; lateral margins evenly convex; with 2 small bulging eyes; with small epistome
; with ca.