Psammostiba

Gusarov, Vladimir I., 2003, A revision of Nearctic species of the genera Adota Casey, 1910 and Psammostiba Yosii & Sawada, 1976 (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 185, pp. 1-35 : 25

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.

Figures

FIGURES 73 ­ 77. Genitalia of Psammostiba comparabilis (Mäklin) (male (73 ­ 76) and female (77) from Homer, Alaska). 73 – median lobe, parameral view; 74 – apex of median lobe, parameral view; 75 – median lobe, lateral view; 76 – apex of median lobe, lateral view; 77 – spermatheca. Scale bar 0.1 mm (74, 76), 0.2 mm (73, 75, 77).

FIGURES 82 ­ 87. Genitalia of Psammostiba kenaii Gusarov, sp. n. (holotype, male (82 ­ 86), and paratype, female (87), from Haines, Alaska). 82 – median lobe, parameral view; 83 – apex of median lobe, parameral view; 84 – median lobe, lateral view; 85 – apex of median lobe, lateral view; 86 – apex of left paramere; 87 – spermatheca. Scale bar 0.1 mm (83, 85 ­ 86), 0.2 mm (82, 84, 87).