Key to Nearctic species of Psammostiba

1 Body larger, length 4.0­ 4.6 mm, pronotal width 0.80­0.89 mm. Aedeagus larger (Figs. 73­76) with wider apex (Figs. 73­74). Spermatheca larger (Fig. 77)............................. ............................................................................................ 1. P. comparabilis (Mäklin)

– Body smaller, length 3.0­ 3.1 mm, pronotal width 0.59­0.64 mm. Aedeagus smaller (Figs. 82­86) with narrower apex (Figs. 82­83). Spermatheca smaller (Fig. 87)........... ............................................................................................. 2. P. kenaii Gusarov, sp. n.