Atheta (Hydrosmectomorpha)
Creators: name: Klimaszewski, Jan
name: Webster, Reginald P.
name: Davies, Anthony
name: Bourdon, Caroline
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Atheta

description: Key to species of Atheta (Hydrosmectomorpha)
1. Antennomeres VIII–X subquadrate to slightly elongate (Fig. 16); apical margin of male tergite VIII truncate and slightly (NB specimens) to strongly sinuate (BC specimens), and a small tooth near each lateral angle (Fig. 19a,b); apical part of median lobe of aedeagus very narrow and pointed and arcuate in lateral view, ventral margin of median lobe of aedeagus for the most part curved in lateral view (Fig. 17, 18); apical margin of female sternite VIII with broad medial emargination bordered on each side by an angular projection (Fig. 21); spermatheca small, capsule tubular and club-shaped, apical invagination small; stem curved at base of capsule, straight to small spherical posterior swelling (Fig. 23)............... A. meduxnekeagensis Webster and Klimaszewski, new species
— Antennomeres VIII–X distinctly elongate (Fig. 8, 24, 32); ventral margin of median lobe in large part straight in lateral view (Fig. 9, 25, 33); other structures not as above.............. 2
2(1). Antennomeres VIII–X each about twice as long as wide (Fig. 24); apical margin of male tergite VIII with broadly V-shaped median emargination forming two lobe-like processes, without lateral teeth (Fig. 26); apical margin of female tergite VIII truncate medially (Fig. 28); spermatheca with capsule broadly club-shaped, apical invagination small; stem short, straight or sinuate (Fig. 30, 31).................. A. vincenti Webster and Klimaszewski, new species
— Antennomeres VIII–X each less than twice as long as wide (Fig. 8, 32); other structures not as above...................................................................... 3
3(2). Apical margin of male tergite VIII with two small lateral and six or many minute denticles near middle (Fig. 11); basal margin of male sternite VIII deeply emarginate medially (Fig. 12); median lobe of aedeagus in lateral view almost straight except apex bent abruptly ventrad (Fig. 9); apical margin of female tergite VIII distinctly broadly emarginate medially (Fig. 13); spermatheca highly sinuate (Fig. 15). A. newfoundlandica (Klimaszewski and Langor)
— Apical margin of male tergite VIII sinuate, without denticles (Fig. 34); basal margin of male sternite VIII slightly emarginate medially (Fig. 35); median lobe of aedeagus in lateral
view broadly curved at base and at apex (Fig. 33); apical margin of female tergite VIII slightly emarginate medially (Fig. 36); spermatheca bent at middle, stem straight (Fig. 38)..................... A. quebecensis Webster and Klimaszewski, new species
description: Published as part of Klimaszewski, Jan, Webster, Reginald P., Davies, Anthony & Bourdon, Caroline, 2018, Description of Hydrosmectomorpha Klimaszewski and Webster, a new subgenus of Atheta C. G. Thomson, with three new Canadian species (Coleoptera: Staphylinidae: Aleocharinae), pp. 1-12 in Insecta Mundi 648 on pages 3-4, DOI: 10.5281/zenodo.3708236