Euaesthetus laeviusculus MANNERHEIM, 1844

Puthz, V., 2014, Nordamerikanische Arten der Gattung Euaesthetus GRAVENHORST (Coleoptera, Staphylinidae) 115. Beitrag zur Kenntnis der Euaesthetinen, Linzer biologische Beiträge 46 (1), pp. 845-876 : 859-860

Euaesthetus laeviusculus MANNERHEIM, 1844 ( Abb. 8, 11 , 15-20, 50)

Euaesthetus laeviusculus MANNERHEIM, 1844: 195 ; CAMPBELL & DAVIES 1991:112.

Euaesthetus frigidus POPPIUS, 1909: 21 .

M a t e r i a l: CANADA: YK: 1: McQuesten Lake , 15 mi SW Keno, 19.VII.1968, Campbell & Smetana ( CNC) ; 1: British Mountains , Swann Pond 4 km NE Wolf Creek, 69 o 08’N, 140 o 14’W, tread sedges around edge of pond, Campbell (ib) ; 2: ibidem, Sheep Creek , 69 o 10’N, 140 o 18’W, Alnus litter, 23.VI.1984, idem (ib) ; 1, 4: ibidem, Fish Creek , 69 o 27’N, 140 o 23’W, pan traps, 30.VI.-4.VII.1984, idem (ib, cP) ; 1: ibidem, Windy Ridge , 69 o 27’N, 140 o 25’W, moss & litter near Salix bush, 2.VII.1984, idem (ib). - NT: 2: Hwy 3.5 mi SE Ft. Simpson, 21.VI.1972, Smetana (ib) ; 2, 1: loc. 06-77, Anderson R. delta, Boat Island , Salix alexensis zone; traps, 26.VI.-15.VII.1977, Shpeley & Ball ( KSEM, cP). - AB: 1: Medicine Hat , 1.IV.1934, Carr ( CNC) ; 2: 5 mi N of Writing on Stone Prov. Pk , sedge, 12.VIII.1978, Lindquist ( CNC, cP) ; 1: Cypress Hill Prov. Pk, Elkwater Lake, cattails in marsh, 5.VIII.1978, idem (ib) ; 1: 2 mi S Ponaka, Battle River , 6.VIII.1976, Campbell (ib) ; 1: Waterton Lakes N. P., Blackiston Valley , berlese moss at pools, 19.VI.1980, Smith (ib) ; 1: Bruderhelm , tread Carex and moss, 1.VII.1982, Davies (ib) ; 1: George Lake , 53 o 57’N, 114 o 06’W, 1.-12.VI.1980, Ashe ( KSEM) ; 7, 3: near Edmonton , soaked from mud & grass clumps along slough, 25.III.1979, Ashe (ib, cP).-SK: 1: Christopher Lake, 11.VII.1959, Brooks ( CNC) ; 1: Prince Albert N. P., 24.VII.1972, Bright (ib) ; 1, 4: 11 mi S Cypress Hills Prov. Pk, 7.-17.VI.1973, Redner & Starr ( CNC, cP). - MB: 1, 2: Riding Mountains N.P., Ominni K. Marsh, berlese Carex in small pond, 30.VII.1979, Miller ( CNC) ; 1, 3: Lake Andy , berlese litter mixed woods, 20.VIII., 11.IX.1979, Lyons, Smetana (ib) ; 3, 1: Whirlpool Lake , berlese Carex in small pond; treading shore line, 1.VI., 24.VIII.1979, Lyons, Miller (ib, cP) ; 4, 3: Jct. Hwy 10 & 19, 24.VII., 14.VIII.1979, Miller (ib).- ON: 10, 16: Ottawa (ib) ; 1, 1: Ottawa River , Britannia Bay, flood debris, 8.IV.1987, Davies (ib) ; 1: Merivale , berlese deciduous duff near marsh, 21.VII.1953, Becker (ib) ; 1, 1: Osgoode , ex nest of Microtus pennsylvanicus, 20.X.1967, Campbell (ib) ; 2, 1: Parry Sound Distr. , 3 mi S Trout Cr., 18.IX.1974, Smith (ib, cP) ; 1: 109 mi N Pickle Lake , 21.VI.1973, Campbell & Parry (ib) ; 2: James Bay N. P., 51 o 29’N, 80 o 27’W, 2.- 6.VIII., 9.-3.VIII.1976, Morrison (ib) ; 1: Mer Bleue , 3.VIII.1973, Redner & Starr (ib) ; 1, 1: ibidem, pitfall-raspberry, 13.-20.VII.1982, Rickey & LeSage (ib) ; 1: Thunder Bay , Mt. McKay, 1600 feet, 15.-19.VI.1973, Campbell & Perry (ib) ; 1: North Gower , Marlborough Forest, 30VI.1987, LeSage & Skidmore (ib). - PQ: 1, 3: Saint-Nérée Bell., tamisage tourbière, 30.X.1976, Chantal (cC, cP) ; 3, 2: Sept-Iles , Saguenay, 19.VII.1988, 11.XI.1989, idem (ib) ; 1: 4 mi W Marsham, near Mud Lake , berlese ex lining of deserted beaver lodge, 24.X.1967, Campbell ( CNC) ; 3, 12: Montreal , 1970-73, Kiteley (ib, cP) ; 2, 3: Mont Albert , Parc Gaspesie, 3700 feet, 10.- 11.VII.1972, Campbell (ib) ; 2, 1: Mt. Jaques Cartier , 4000 feet, 22.VII.1972, idem (ib) ; 3, 4: Ormstown , 1975-1983, Kiteley (ib, cP) ; 1, 1: Windsor , 10.VII.1983, Levesque C 1039 (ib) ; 1, 1: Gatineau Park nr Meach I., berlese moss on rocks at stream, 1.IX.1982, Davies (ib) ; 3: Mont du Lac des Cygnes , Charlevoix , piège fosse, milieu alpine ouvert, site D, 9., 23.VI., 20.VII.1999 ( LFC). - NB: 1: York Co., Dumfries , Slagundy Dry Ponds, 45.8596‘‘N, 87.1849‘‘W, large vernal pond, pond margin in moist leaf litter,, 8.VII.2006, Webster (cW) ; 1: York Co., Rte 645 at Beaver Brook , 45.6860‘‘N, 66.8668‘‘W, Carex marsh, in litte rat base of Carex hummock, 6.V.2008, idem (ib) ; 1: York Co., 14 km WSW of Tracy, S of Rte 645, 45.6603‘‘N, 66.8607‘‘W, Black spruce bog, in sphagnum hummocks with Carex and grasses, 2.V.2010, idem (ib) ; 1: Restigouche Co., Jacquet River Gorge PNA, 47.8200’’N, 66.0015’’W, under alders in leaf litter & moss near small brook near Carex marsh, 13.V.2010, idem (ib). - NS: 7, 11: Cape Breton H.N.P., Warren Lake Trail, sifting alder litter, 26.IX.1984, Campbell & Davies ( CNC, cP) ; 1, 12: 46 o 52’N, 60 o 25’W, Sandbar Pans , 3.-13.VI.1983, Goulet (ib) ; 1: South Harbour , Pan traps, 1.VII.1983, Vockeroth (cP).- PE: 3, 1: P. E. I. Nat. Pk, Long Pond, 2.VII.1986, Davies ( CNC, cP) .

U.S.A.: AL: 2: Mi. 23, Taylor Hwy , 8.VII.1968, Campbell & Smetana ( CNC, cP) ; 2, 5: Mi. 123, Taylor Hwy , 9.VII.1968, idem (ib) ; 3: Mi. 1249 Alasky Hwy, Deadman Lake , 6.- 7.VII.1968, idem (ib) ; 1: Kotzebue, 14.VIII.1958, Lindroth ( MCZH). - CO: 1 (cf. det.): Williams River Valley , 9000 feet, IX.1894, Wickham ( MCZH). - MT: 1, 1: near Lima, ex marsh refuse, 30.VII.1976, Hammond ( NHML, cP). - UT: 2: Monti Lasal N. F., Warner Campground, 9200 feet, wet moss, 8.-9.VII.1976, Hammond ( NHML). - IA: 3, 5: Clay Co., Trumball Lake near Dickens, floor litter & moss in swamp, 5.VI.1961, Suter & Wagner (FMCh, cP). - ME: 1 (cf. det.): "Me.", coll. Fall ( MCZH). - NH: 4: Mt. Washington, subalpine, 1.VII.1896, Blanchard ( MCZH, AMNH, cP) ; 4, 10: ibidem, Alpine Garden, 5300 feet, sifting Dwarf Betula litter, 12.IX.1987, Campbell & Davies ( CNC, cP) ; 11, 8: ibidem, Crawford Path, 5500 feet, sifting Vaccinium leaf litter with moss & grasses, 10.IX.1984, idem (ib) ; 4, 10: ibidem, above tree line, 5200-5700 feet, dwarf Salix, Vaccinium leatherleaf litter, 18.IX.1984, idem (ib) ; 1: Coos Co., Mt. Munroe, around Lakes of the Clouds , 50-5100 feet, Vaccinium , Dwarf Betula , leatherleaff litter, 10.IX.1987, Campbell & Davies ( CNC) ; 1: ibidem, 5700 feet, Dwarf Salix, Vaccinium leatherleaf litter, idem (ib) ; 3: Halfway House , berlese moss by spring, 26.VIII.1982, Chandler ( UNHD, cP) ; 1: Straffordford Co., East Foss Farm 1 km S Durham, forest FIT, 5.-18.X.2007, idem (ib) ; 1: Franconia ( AMNH).- NY: 1, 3: "N.Y." coll. Casey ( USNM, cP) .

B e m e r k u n g: Diese Art ist über die gesamte Holarktis verbreitet. Die nordamerikanischen Stücke sind durchschnittlich grösser als Eu. iripennis und Eu. suteri und dunkler gefärbt ( Abb. 8 ). Die Bestimmung ist in manchen Fällen unsicher (z. B. bei Exemplaren aus Ottawa und solchen aus hohen Lagen der Berge in NH: die Flügeldeckengrösse scheint mit zunehmender Höhe z. B. auf dem Mt. Washington abzunehmen); vgl. dazu auch oben.

Figures

Abb. 8-14: Vorderkörper (8-10) und Aedoeagus (11-14) von Euaesthetus laeviusculus MANNERHEIM (8, NS; 11, IA), Eu. iripennis CASEY (9, NC; 12, KY; 13, MA) und Eu. suteri nov.sp. (10, 14, PTT).