Lobrathium (Eulathrobium) grande (LeConte, 1863),

Webster, Reginald P. & DeMerchant, Ian, 2012, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada: Paederinae, ZooKeys 186, pp. 273-292: 280-281

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Lobrathium (Eulathrobium) grande (LeConte, 1863)


Lobrathium (Eulathrobium) grande (LeConte, 1863)  Map 11

Material examined.

New Brunswick, Charlotte Co., near Clark Ridge, 45.3155°N, 67.4406°W, 27.V.2007, R. P. Webster, beaver pond, treading vegetation (1, NBM). Queens Co., Scotchtown near Indian Point (at Grand Lake), 45.8762°N, 66.1816°W, R. P. Webster, 5.VI.2004, lake margin, under drift material (3, RWC); W of Jemseg near Jemseg River, 45.8255°N, 66.1174°W, 1.VII.2008, R. P. Webster, seasonally flooded marsh, treading vegetation on margin of pool 1, NBM); Grand Lake Meadows P.N.A., 45.8227°N, 66.1209°W, 14-19.V.2010, R. Webster & C. MacKay, old silver maple forest with green ash and seasonally flooded marsh, Lindgren funnel trap (1, AFC); same locality data and forest type, 5-19.VII.2011, 19.VII-5.VIII.2011, M. Roy & V. Webster, Lindgren funnel traps (2, AFC, NBM). Sunbury Co., Maugerville, Portobello Creek N.W.A., 45.8992°N, 66.4248°W, 27.V.2004, 5.VI.2004, R. P. Webster, silver maple forest, margin of small (vernal) pond, in leaf litter (5, RWC); Sheffield, Portobello Creek N.W.A., 45.8952°N, 66.2728°W, 24.VI.2004, R. P. Webster, seasonally flood marsh, treading marsh vegetation (1, RWC). York Co., Douglas, near Nashwaaksis River, 45.9845°N, 66.6908°W, 4.VI.2003, R. P. Webster, silver maple forest, margin of small pond in leaf litter (1, RWC); Charters Settlement, 45.8340°N, 66.7450°W, 27.IV.2006, R. P. Webster, mixed forest, margin of vernal pond in moist leaves (1 ♀, NBM).

Collection and habitat data.

Watrous (1981) reported Lobrathium grande  from a variety of riparian habitats. Adults occurred in moss roots, in leaf litter and sticks at a stream margin, in litter in a North American beaver ( Castor canadensis  Kuhl) lodge and in leaf litter at the margin of a swamp. Larvae were described by Watrous (1981). In New Brunswick, was adults were found in silver maple swamps, seasonally flooded marshes, a mixed forest, and beaver pond margins. Adults were usually found among moist leaves along pond and vernal pond margins or by treading vegetation in marshes. One individual was captured in a Lindgren funnel trap deployed in an old silver maple swamp. Adults were captured during April, May, June, July, and August.

Distribution in Canada and Alaska.

ON, QC, NB, NS ( Campbell and Davies 1991).