Hadromychus chandleri Bousquet & Leschen, 2002

Webster, Reginald P., Sweeney, Jon D. & DeMerchant, Ian, 2012, New Coleoptera records for New Brunswick, Canada: Kateretidae, Nitidulidae, Cerylonidae, Endomychidae, Coccinellidae, and Latridiidae, ZooKeys 179, pp. 193-214 : 199-200

Hadromychus chandleri Bousquet & Leschen, 2002 Map 7

Material examined.

New Brunswick, Carleton Co., Jackson Falls, Bell Forest, 46.2200°N, 67.7231°W, 4-12.VI.2008, 12-19.VI.2008, R. P. Webster, mature har dwood forest, Lindgren funnel traps (5, NBM, RWC); same locality and habitat data, 28.IV-9.V.2009, 9-14.V.2009, 14-20.V.2009, 21-28.VI.2009, R. Webster & M.-A. Giguère, mature hardwood forest, Lindgren funnel traps (8, AFC, RWC). Queens Co., Cranberry Lake P.N.A., 46.1125°N, 65.6075°W, 12-21.V.2009, 21-27.V.2009, 27.V-5.VI.2009, R. Webster & M.-A. Giguère, old red oak forest, Lindgren funnel traps (5, AFC); same locality data and forest type, 25.V-7.VI.2011, M. Roy & V. Webster, Lindgren funnel trap (1, NBM). Restigouche, Co., Dionne Brook P.N.A., 47.9030°N, 68.3503°W, 31.V-15.VI.2011, M. Roy & V. Webster, old-growth northern hardwood forest, Lindgren funnel traps (3, AFC, NBM); same locality and collectors but 47.9064°N, 68.3441°W, 31.V-15.VI.2011, 27.VI-14.VII.2011, old-growth white spruce and balsam fir forest (26, AFC, NBM, RWC). Sunbury Co., Acadia Research Forest, 45.9866°N, 66.3841°W, 28.IV-8.V.2009, 13-19.V.2009, 19-25.V.2009, 2-9.VI.2009, 24-30.VI.2009, R. Webster & M.-A. Giguère, mature (110 year-old) red spruce forest with scattered red maple and balsam fir, Lindgren funnel traps (6, AFC, RWC). York Co., 15 km W of Tracy off Rt. 645, 45.6848°N, 66.8821°W, 4-11.V.2009, 11-19.V.2009, R. Webster & M.-A. Giguère, old red pine forest, Lindgren funnel traps (2, AFC, RWC); 14 km WSW of Tracy, S of Rt. 645, 45.6741°N, 66.8661°W, 26.IV-10.V.2010, 10-26.V.2010, 26.V-2.VI.2010, R. Webster & C. MacKay, old mixed forest with red and white spruce, red and white pine, balsam fir, eastern white cedar, red maple, and Populus sp., Lindgren funnel traps (8, AFC);Charters Settlement, 45.8395°N, 66.7391°W, 1-5.VI.2011, R. P. Webster, mixed forest, flight intercept trap (1, NBM).

Collection and habitat data.

Little is known about the habitat requirements of Hadromychus chandleri . All (64) specimens from New Brunswick were captured in Lindgren funnel traps, which visually mimic tree trunks and are often effective for sampling species of Coleoptera that live in microhabitats associated with standing trees ( Lindgren 1983). This species may likely live in microhabitats associated with standing trees. Specimens of this specieswere collected from a various forest types in New Brunswick. Adults were collected in a mature hardwood forest, an old-growth northern hardwood forest with sugar maple and yellow birch ( Betula alleghaniensis Britt.), an old red oak forest, a mature red spruce forest, an old red pine forest, an old-growth white spruce ( Picea glauca (Moench) Voss) and balsam fir forest, and old mixed forests. Most adults were captured in an old-growth white spruce and balsam fir forest (boreal forest) in northwestern New Brunswick. This species is likely a northern and boreal faunal component. Adults were collected during April, May, June, and July.

Distribution in Canada and Alaska.

ON, QC, NB, NS ( Bousquet and Leschen 2002). The type series of this species consisted of seven specimens originating from New Hampshire, Nova Scotia, Ontario, and Quebec ( Bousquet and Leschen 2002). Majka (2007) reported five additional specimens from Nova Scotia. Majka (2007) suggested that Hadromychus chandleri may be the rarest North American endomychid species. However, 64 specimens of this species were collected in New Brunswick between 2008 and 2011, indicating that this species may be more common, at least locally, than previously thought. All specimens from New Brunswick were captured in Lindgren funnel traps, and those reported by Majka (2007) from Nova Scotia were caught in flight-intercept traps, further suggesting that more specialized sampling methods are required to document the occurrence of this species. This species was most abundant in an old-growth boreal forest with white spruce and balsam fir.

Figures

Map 8. Collection localities in New Brunswick, Canada of Danae testacea.