Description of Hydrosmectomorpha Klimaszewski and Webster, a new subgenus of Atheta C. G. Thomson, with three new Canadian species (Coleoptera: Staphylinidae: Aleocharinae) Author Klimaszewski, Jan Author Webster, Reginald P. Author Davies, Anthony Author Bourdon, Caroline text Insecta Mundi 2018 2018-08-31 648 1 12 journal article 10.5281/zenodo.3708236 6d350404-6f84-4fdc-83ef-65a70583acf8 1942-1354 3708236 DBEAD659-A6B3-4579-9F64-D4D2C1301D10 Atheta ( Hydrosmectomorpha ) quebecensis Webster and Klimaszewski, new species ( Fig. 32–38 ) Holotype (male). Canada , Quebec , Bellechase Co. , St. Raphael at Rivière du Sud , 46.8071°N , 70.7377°W , 27.VIII.2009 , R .P. Webster , coll. // river margin near waterfall, splashing exposed bedrock with moss near fast flowing water above waterfall, ( CNC ) . Paratypes . Same locality data as the holotype ( RWC ) 1 female . Etymology. This species name derives from the name of the province of Quebec , where the original series was found. Diagnosis. Body subparallel, flattened, length 3.6–3.8 mm ; colour dark brown to almost black, with legs and elytra except for scutellar region paler, yellowish-brown ( Fig. 32 ); integument moderately glossy, forebody with fine, moderately dense punctation and faint meshed microsculpture; head slightly narrower than pronotum, eyes large and slightly protruding; antennae moderately robust, all antennomeres at least slightly elongate ( Fig. 32 ); pronotum subquadrate, widest at apical third ( 0.62 mm ); elytra flat- tened, distinctly elongate and broader than pronotum ( 0.77 mm , at shoulders), at suture about as long as pronotum; abdomen subparallel, broadest at apical third. Male . Tergite VIII with apical margin slightly sinuate, without teeth ( Fig. 34 ); sternite VIII arcuately emarginate basally and broadly rounded apically ( Fig. 35 ); tubus of median lobe of aedeagus in lateral view moderately wide, ventral margin curved basally, then straight to narrow, slightly curved apex ( Fig. 33 ). Female . Apical margin of tergite VIII slightly sinuate, shallowly emarginate medially ( Fig. 36 ); sternite VIII shallowly emarginate at base, apical margin truncate medially, rounded laterally ( Fig. 37 ); spermatheca short, capsule club-shaped with deep apical invagination, stem narrow and straight, with spherical swelling posteriorly ( Fig. 38 ). Distribution. Origin : Nearctic. CANADA : QC. Habitat and collection data. Habitat . Found along margin of fast-flowing river above a waterfall. Adults were in exposed moss covered bedrock. The rarely collected Bembidion ( Pseudoperyphus ) rufotinctum Chaudoir (Carabidae) occurred in the same habitat. Collecting period . VIII. Collecting method . Collected by splashing exposed moss-covered bedrock in river.