Thanasimus undatulus undatulus (Say, 1835)

Webster, Reginald P., Webster, Vincent L., Alderson, Chantelle A., Hughes, Cory C. & Sweeney, Jon D., 2016, Further contributions to the Coleoptera fauna of New Brunswick with an addition to the fauna of Nova Scotia, Canada, ZooKeys 573, pp. 265-338 : 298-299

Thanasimus undatulus undatulus (Say, 1835)

Material examined.

New Brunswick, Gloucester Co., Bathurst, Daly Point Nature Preserve, 47.6392°N, 65.6098°W, 13-28.V.2015, 28.V-15.VI.2015, C. Alderson & V. Webster // Mixed forest , black Lindgren funnel trap in canopy (1), 1 m high under trees (1) (2, AFC). Kent Co., Kouchibouguac National Park , 46.8072°N, 64.9100°W, 21-27V.2015, C. Alderson & V. Webster // Jackpine forest , Lindgren funnel traps, 1 m high (2, AFC). Northumberland Co. , ca, 2.5 km W of Sevogle, 47.0876°N, 65.8613°W, 1-14.V.2013, 6-21.VIII.2013, C. Alderson & V. Webster // Old Pinus banksiana stand, Lindgren funnel traps (2, AFC); ca. 1.5 km NW of Sevogle, 47.0939°N, 65.8387°W, 11-26.VI.2013, C. Alderson & V. Webster // Populus tremuloides stand with a few conifers, Lindgren funnel traps in canopy of Populus tremuloides (1, AFC); Upper Graham Plains , 47.1001°N, 66.8154°W, 28.V-10.VI.2014, 24.VI-9.VII.2014, C. Alderson & V. Webster // Old black spruce forest, Lindgren funnel traps (1, AFC, 1, NBM). Restigouche Co. , Jacquet River Gorge P.N.A., 47.8257°N, 66.0764°W, 15-29.V.2014, C. Alderson & V. Webster // Old Populus balsamifera stand near river, Lindgren funnel trap 1 m high under trees (1, NBM). Sunbury Co. , Acadia Research Forest , 45.9866°N, 66.3441°W, 13-19.V.2009, 19-25.V.2009, 2 -9.VI.2009, 9-16.VI.2009, 16-24.VI.2009, R.P. Webster & M.-A. Giguère // Red spruce forest with red maple & balsam fir, Lindgren funnel traps (7, AFC; 4, RWC). York Co. , Fredericton , 17.VI.1929, M.L. Prebble (2, AFC); Charters Settlement , 45.8430°N, 66.7375°W, 11.VII.2005, R.P. Webster // Regenerating mixed forest, on spruce log (1, RWC); 15 km W of Tracy off Rt. 645, 45.6848°N, 66.8821°W, 19-25.V.2009, 15-21.VI.2009, 21-28.VI.2009, 7-14.VII.2009, R.P. Webster & M.-A. Giguère // Old red pine forest, Lindgren funnel traps (6, AFC; 2, RWC); same locality data and forest type but 13.V.2009, R.P. Webster // On small branches of recently fallen red pine (2, RWC); Canterbury, Eel River P.N.A., 45.8966°N, 67.6345°W, 8-21.V.2014, C. Alderson & V. Webster // Old-growth eastern white cedar swamp & fen, Lindgren funnel trap (1, NBM); Fredericton, Odell Park, 45.9484°N, 66.6802°W, 12-22.V.2014, C. Alderson & V. Webster // Old mixed forest, Lindgren funnel trap in canopy of conifer (1, AFC) .

Distribution in Canada and Alaska.

AK, NT, BC, AB, ON, QC, NB, NS ( Bousquet et al. 2013).

Comments.

Two subspecies of Thanasimus undatulus (Say), Thanasimus undatulus undatulus and Thanasimus undatulus nubilus (Klug), co-occur at many sites in NB. The two subspecies differ in overall coloration, color pattern, and size. Thanasimus undatulus undatulus is black with the basal third of pronotum red-brown, and the white posterior band on elytra continues as a narrow band along the suture to near or to the posterior margin of the elytra. The average length is smaller: from 5.2 to 6.8 mm. Thanasimus undatulus nubilus is black, without red-brown areas on the pronotum and elytra, and there is little or no extension of the white posterior band along the suture toward elytral apex (body length 6.2 to 9.3 mm). We have not seen any intermediate specimens. More studies are required to establish if these two subspecies should be treated as distinct species.