Oxypoda domestica Klimaszewski & Larson

Klimaszewski, Jan, Larson, David J., Labrecque, Myriam & Bourdon, Caroline, 2016, Twelve new species and fifty-three new provincial distribution records of Aleocharinae rove beetles of Saskatchewan, Canada (Coleoptera, Staphylinidae), ZooKeys 610, pp. 45-112 : 83-84

Taxon classification Animalia Coleoptera Staphylinidae

Oxypoda domestica Klimaszewski & Larson sp. n. Figs 87-91

Holotype (male).

Canada, Saskatchewan, Larson Ranch, Hwy 21, 16 km S Maple Creek, 22-IV-2012, D. Larson (LFC). Paratype. Canada, Saskatchewan, Larson Ranch, Hwy 21, 16 km S Maple Creek, 1-IV-2012, D. Larson (CNC) 1 male.

Etymology.

The name of this species is derived from Latin feminine adjective domestica -, meaning domestic, in reference to the capture of the type specimens in the vicinity of the farmstead.

Diagnosis.

Body length 3.4-3.6 mm, narrowly subparallel, broadest at posterior elytra, abdomen subparallel (Fig. 87); piceous with legs, basal antennal article, and two narrow oblique sections of elytra yellowish-brown (the extent of this section is variable) (Fig. 87); pubescence and punctation of forebody dense; integument with isodiametric microsculpture. Head distinctly broader than half of pronotal width (Fig. 87); eyes large, longer than postocular area in dorsal view; antennae slender, antennomeres I-III strongly elongate, IV slightly elongate, V subquadrate, VI-X moderately transverse (Fig. 87); pronotum moderately convex, strongly transverse and about one fifth broader than long, broadest in basal third, pubescence directed anteriad apically along midline and obliquely posteriad from midline of disc elsewhere (Fig. 87); elytra slightly broader than pronotum and at suture about as long as pronotum, pubescence directed approximately straight posteriad (Fig. 87); abdomen subparallel and slightly tapering apically (Fig. 87). MALE. Tergite VIII transverse and broadly arcuate apically, antecostal suture approximately straight (Fig. 90); sternite VIII triangularly produced apically, antecostal suture slightly sinuate (Fig. 91); median lobe of aedeagus with narrowly oval bulbus and broad and subparallel tubus in dorsal view (Fig. 89); ventral margin of tubus slightly sinuate and with apex triangular in lateral view (Fig. 88); internal sac with elongate subapical structures (Figs 88, 89); bulbus with ovally elongate crista apicalis (Fig. 88). FEMALE. Unknown.

Natural history.

The two males were captured in April in an unspecified habitat near a farmstead.

Comments.

This species is very similar externaly to Oxypoda irrasa Mäklin, from which it may be distinguished by the shape of tubus of median lobe of aedeagus with slightly sinuate ventral margin and triangular apical part in lateral view (Fig. 85). In Oxypoda irrasa , tubus of median lobe of aedeagus is angularly bent ventrally and apical part is evenly narrowly elongate. For illustrations of Oxypoda irrasa , see Klimaszewski et al. (2006).