Dana, 1849
Females: P5 B with conspicuous inner lobe, terminal spine-like segment with coarse spinules for short distance at about midlength. More characters can be accessed by backtracking the key:
Page 566
Males: Right P5 Exp1 without inner edge spine; left Exp2+3 with 2 fine spines inserted subterminally; Ur1 and 2 decorated with rows of fine hairs. More characters can be accessed by backtracking the key:
Page 984