Brachyusa

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Taxonavigation

Ordo: Coleoptera
Familia: Staphylinidae

Name

Brachyusa Mulsant & Rey – Wikispecies link – Pensoft Profile

Key to Canadian species of Brachyusa

Key to Canadian species of Brachyusa — J. Klimaszewski , D. Larson , M. Labrecque , C. Bourdon

1		Median lobe of aedeagus with narrowly triangular apical part forming dorsally distinct angular projection in apical half of tubus in lateral view (see Fig. 5N, in Seevers 1978)     Brachyusa americana (Fenyes)
–		Median lobe of aedeagus with narrowly triangular apical part without angular dorsal projection in apical half of tubus in lateral view (Figs 93, 100)    2
2		Body broad (Fig. 99); pronotal base strongly sinuate laterally (Fig. 99); median lobe of aedeagus with tubus extremely elongate (Fig. 100); male tergite VIII emarginate apically (Fig. 101); spermatheca L-shaped (Fig. 105)     Brachyusa saskatchewanae Klimaszewski & Larson, sp. n.
–		Body moderately narrow (Fig. 92); pronotal base evenly arcuate (Fig. 92); median lobe of aedeagus with tubus moderately elongate (Fig. 93); male tergite VIII truncate apically (Fig. 94); spermatheca S-shaped (Fig. 98)     Brachyusa helenae Casey

Taxon Treatment

• Klimaszewski, J; Larson, D; Labrecque, M; Bourdon, C; 2016: Twelve new species and fifty-three new provincial distribution records of Aleocharinae rove beetles of Saskatchewan, Canada (Coleoptera, Staphylinidae) ZooKeys, (610): 45-112. doi

Images

Figures 92–98. Brachyusa helenae Klimaszewski & Larson, sp. n.: 92 habitus in dorsal view 93 median lobe of aedeagus in lateral view 94 male tergite VIII 95 male sternite VIII 96 female tergite VIII 97 female sternite VIII 98 spermatheca. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 99–105. Brachyusa saskatchewanae Klimaszewski & Larson, sp. n.: 99 habitus in dorsal view 100 median lobe of aedeagus in lateral view 101 male tergite VIII 102 male sternite VIII 103 female tergite VIII 104 female sternite VIII 105 spermatheca. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.