Twelve new species and fifty-three new provincial distribution records of Aleocharinae rove beetles of Saskatchewan, Canada (Coleoptera, Staphylinidae)AuthorKlimaszewski, JanAuthorLarson, David J.AuthorLabrecque, MyriamAuthorBourdon, CarolinetextZooKeys201661045112http://dx.doi.org/10.3897/zookeys.610.9361journal articlehttp://dx.doi.org/10.3897/zookeys.610.93611313-2970-610-45910C964F910C47D99FAEB73A5557C7E2910C964F910C47D99FAEB73A5557C7E2Taxon classification Animalia Coleoptera StaphylinidaeBrachyusa helenae (Casey)
Figs 92-98
(for diagnosis, see
Klimaszewski et al. 2011
)
Tetralina filitarsus
Casey, 1911: 225. Holotype (male): USA, Montana, Kalispell, June, Wickham, Type USNM 3887 (USNM) 1 male. New Synonymy.
Distribution.
LBNBNFNTONSKYT
SaskatchewanLFCDLC
Casey 1911Seevers 1978Klimaszewski et al. 2011Brunke et al. 2012Bousquet et al. 2013
Natural history.
In SK, one specimen was captured in pine/spruce litter near stream, and another in an unspecified habitat in August and September. In LB, adults were collected in July and August on sand and gravel on the banks of the Churchill River (
Klimaszewski et al. 2011
). Elsewhere, adults were collected near lake and river shorelines, on clay, sand and gravel beaches and sandy and silty river margins (
Klimaszewski et al. 2011
). The adult activity period is May to August.
Comments.
The two SK females agree in colour, body shape, morphology of tergite and sternite VIII, and spermatheca with the type of
Brachyusa helenae
and the recently examined specimens from NF and NB. We have studied the types of
Brachyusa alutacea
(Casey),
Brachyusa filitarsis
(Casey) and
Brachyusa helenae
(Casey). The genital illustrations of
Brachyusa americana
(Fenyes), recorded from BC, are provided by
Seevers (1978)
. We have not found any significant morphological differences between the types of
Brachyusa filitarsis
and
Brachyusa helenae
, and the two species are synonymous. However,
Brachyusa alutacea
clearly differs from
Brachyusa helenae
/
filitarsis
by a very broad body.
Seevers'
(1978)
key to species based on antennae and the length of the basal article of the metatarsus is not accurate.