Dinaraea subdepressa (Bernhauer, 1907)

Webster, Reginald P., Klimaszewski, Jan, Bourdon, Caroline, Sweeney, Jon D., Hughes, Cory C. & Labrecque, Myriam, 2016, Further contributions to the Aleocharinae (Coleoptera, Staphylinidae) fauna of New Brunswick and Canada including descriptions of 27 new species, ZooKeys 573, pp. 85-216 : 126-128

Taxon classification Animalia Coleoptera Staphylinidae

Dinaraea subdepressa (Bernhauer, 1907) Figs 192-198

Dinaraea subdepressa (For diagnosis, see Klimaszewski et al. 2013b)

Material examined.

New Brunswick, Charlotte Co., 10 km NW of New River Beach, 45.2110°N, 66.6170°W, 17-31.V.2010, R. Webster & C. MacKay, coll. // Old-growth eastern white cedar forest, Lindgren funnel trap (1 ♀, LFC). Northumberland Co., ca. 2.5 km W of Sevogle, 47.0876°N, 65.8613°W, 11-26.VI.2013, 27.VIII-4.IX.2013, 27.V-11.VI.2014, C. Alderson & V. Webster // Old jack pine forest, Lindgren funnel traps (1 ♂ 1 ♀, LFC; 1 ♂, 2 ♀, RWC); Upper Graham Plains, 47.1001°N, 66.8154°W, 28.V- 10.VI.VII.2014, C. Alderson & V. Webster // Old black spruce forest, Lindgren funnel trap (1 ♀, RWC). Queens Co., Cranberry Lake P.N.A., 46.1125°N, 65.6075°W, 3-13.V.2011, 7-22.VI.2011, M. Roy & V. Webster // Red oak forest, Lindgren funnel traps (1 ♀, LFC, 2 ♀, RWC). Restigouche Co., Jacquet River Gorge P.N.A., 47.8257°N, 66.0764°W, 29.V-10.VI.2014, C. Alderson & V. Webster // Old Populus balsamifera stand near river, Lindgren funnel trap 1 m high under trees (2 ♂, RWC). York Co., 15 km W of Tracy, off Rt. 645, 45.6848°N, 66.8821°W, 4-16.VI.2010, R. Webster & C. MacKay, coll. // Old red pine forest, Lindgren funnel trap (1 ♀, RWC); Keswick Ridge, 45.9962°N, 66.8781°W, 22.V-4.VI.2014, C. Alderson & V. Webster // Mixed forest, Lindgren funnel trap, 1 m high under trees (1 ♀, RWC).

Natural history.

All specimens of Dinaraea subdepressa from NB were captured in Lindgren funnel traps in the following forest types: an old jack pine forest, a red pine forest, an old-growth eastern white cedar forest, an old black spruce forest, mixed forests, a red oak forest, and an old balsam poplar forest near a river. Little is known about the biology and microhabitat requirements of this species. Other members of the genus live in subcortical habitats and may play a role as natural enemies of bark beetles and other subcortical insects ( Klimaszewski et al. 2013b). This species presumably has a similar biology.

Distribution in Canada and Alaska.

NB (New Canadian record).

Comments.

Dinarea subdepressa (Bernhauer) was previously known only from NH in the USA ( Bernhauer 1907). Females were previously unknown and are illustrated for the first time in this publication (Figs 196-198). This species is externally very similar to Dinaraea curtipenis Klimaszewski & Webster but differs in having the posterolateral angles of the pronotum very sharp, with the margin strongly depressed from the angle to the middle of the base, forming a groove (Fig. 192). In Dinaraea curtipenis , the posterior angle is rounded and the margin is not strongly depressed (Fig. 178).