6); and by the nearly symmetrical anterior medial margin of the first gonapophysis (Fig.
6); and by the highly asymmetrical anterior medial margin of the first gonapophysis.
1); medial margin of first gonapophysis nearly symmetrical (Fig.
1); anterior medial margin of first gonapophysis strongly asymmetrical (Fig.
In the family Helotrephidae, the sister family to Pleidae, Papacek (2002, 2008) showed that the 1st gonapophysis is taxonomically informative at the genus level.
Additional features: 1 thin spur on opposing side of 1st gonapophysis (not shown in Fig.
Neoplea globoidea was described from a single male, and therefore there is no knowledge of the 1st gonapophysis.
Additional features: small tooth-like projection of 1st gonapophysis ventral to [P.
Nieser (1975) included a figure of the 1st gonapophysis but made no comment on its structure.
Below are the general characteristics of the 1st gonapophysis of each species of Neoplea, except where the 1st gonapophysis is unknown.