Dinaraea piceana Klimaszewski & Jacobs

Klimaszewski, Jan, Webster, Reginald P., Langor, David W., Caroline Bourdon, & Jacobs, Jenna, 2013, Review of Canadian species of the genus Dinaraea Thomson, with descriptions of six new species (Coleoptera, Staphylinidae, Aleocharinae, Athetini), ZooKeys 327, pp. 65-101 : 78-80

5. Dinaraea piceana Klimaszewski & Jacobs sp. n. Fig. 5 a–g, Map 7

HOLOTYPE

(male): CANADA, QUEBEC: Villebois, Picea mariana , coll. J. Jacobs, 2008, DB-ID 2797 (LFC) 1 male. PARATYPES: same data as the holotype except: DB-ID 333 (LFC) 1 female; DB-ID 847 (LFC) 1 male; DB-ID 1255 (LFC) 1 female; DB-ID 2722 (LFC) 1 female; DB-ID 1745 (LFC) 1 male; DB-ID 1747 (LFC) 1 female; DB-ID 2756 (LFC) 1 male; DB-ID 2774 (LFC) 1 female; DB-ID 2784 (LFC) 1 female; DB-ID 2785 (LFC) 1 male; DB-ID 2840 (LFC) 1 female; DB-ID 2844 (LFC) 1 female; DB-ID 2869 (LFC) 1 male; DB-ID 2870 (LFC) 1 male; DB-ID 2876 (LFC) 1 female; DB-ID 2879 (LFC) 1 male; DB-ID 2880 (LFC) 1 female; DB-ID 2884 (LFC) 1 male; DB-ID 2885 (LFC) 1 female; DB-ID 2893 (LFC) 1 female; DB-ID 2907 (LFC) 1 female; DB-ID 2908 (LFC) 1 male; DB-ID 2909 (LFC) 1 female; DB-ID 3265 (LFC) 1 male; MRC Manic, Réservoir Outardes 4, 50°37'N, 69°35'W, 2. VII– 10.VII.2007, Chaire Côte-Nord, J.P. Légaré, Bloc Abitibi Sud, CP2 (CJSP) 3-10 m, Piège à impact, 2007-3-0520 (LFC) 1 female.

Etymology.

Piceana is an adjective derived from the tree name Picea mariana Mill. (BSP), in allusion to the black spruce forest where it was found.

Diagnosis.

Dinaraea piceana (habitus Fig. 5a) may be distinguished from congeners by the following combination of characters: body length 3.1-3.3 mm; head, pronotum and elytra matte with dense microsculpture; pronotum broadest in apical third and narrowest at base; elytra at suture slightly longer than pronotum, with dense punctation similar to that on pronotum; antennal articles 7-10 moderately transverse; male tergite VIII with four small apical teeth, all short and rounded (Fig. 5c); median lobe of aedeagus with straight and short tubus narrowly rounded apically and slightly produced ventrally (Fig. 5b); spermatheca with elongate pear-shaped capsule, and moderately long apical invagination, stem long, sinuate and looped posteriorly, with slightly larger apical part (Fig. 5e).

Description.

Body length 3.1-3.3 mm; body dark brown with legs, antennae (at least basally), labial palpi and elytra yellowish- or reddish-brown; head, pronotum and elytra matte, with dense microsculpture; abdominal microsculpture less dense than that of pronotum and elytra and integument more glossy; head about as broad and as large as pronotum, genae slightly longer than eyes in dorsal view; pronotum broadest in apical third, slightly transverse, longer than elytra at suture; elytra transverse, truncate posteriorly; abdomen subparallel; male tergite VIII with four small rounded teeth at apical margin (Fig. 5c), sternite VIII rounded posteriorly, antecostal suture and anterior margin of disc sinuate (Fig. 5d); median lobe of aedeagus with short and straight venter of tubus and narrowly rounded apex (Fig. 5b); female tergite VIII concave basally and truncate apically (Fig. 5f); sternite VIII rounded apically and emarginated medially, antecostal suture slightly sinuate (Fig. 5g); spermatheca with elongate pear- shaped capsule and moderately long apical invagination, stem long, sinuate and looped posteriorly, with slightly swollen apical part (Fig. 5e).

Distribution.

Known from Quebec.

Collection and habitat data.

Most adults were collected in dead black spruce logs in boreal black spruce forests, and one was captured in an intercept trap in a boreal forest during July.