Euaesthetus americanus ERICHSON , 1840

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 : 849-851

Euaesthetus americanus ERICHSON, 1840 (Abb. 3, 32, 66, 67)

Euaesthetus americanus ERICHSON, 1840: 747 ; CASEY, 1884: 27; PUTHZ, 1998: 242

Euaesthetus cf. americanus ; PUTHZ, 2001: 30

Euaesthetus subiridipennis BERNHAUER, 1928: 38 ; PUTHZ, 1998: 242

M a t e r i a l: 2, 2: "N. Am. /Am. bor." ( DEI, FMCh, MHNG). - CANADA: AK: 1: Mi 1259 Alaska Hwy, 7.VII.1968, Campbell & Smetana ( CNC). - NT: 1: Martin River, FWI- Pipeline Project, 20.VII.1972 (ib). - AB: 1: Waterton Lakes N. P., Mi 3, Red Rock Cny. Rd, 4400‘, 26.VI.1980, Campbell (ib). - MB: 1: Riding Mtn N. P., Jct. Hwy 10 & 19, Berlese Carex in small pond, 24.VII.1979, Miller (ib) ; 1: Ominni K Marsh, Berlese Carex in small pond, 30.VII.1979, idem (ib) ; 1: Whirlpool Lake , 24.VIII.1979, Lyons (cP).- ON: 1, 2: Ridgeway (FMCh) ; 2: Osgoode , ex nest of Microtus pennsylvanicus, 20.X.1967, Campbell & Smetana ( CNC) ; 2: Leamington , 24.VI.1931, Brown ( CNC, cP) ; 3, 3: Pt. Pelee , 25.VII.1931, Brown (ib) ; 1, 2: Parry Sound District , 3 mi S Trout Creek, 18.IX.1974, Smith (ib) ; 1, 1: Carleton Co., 6 mi W Richmond , 28.III.1973, Martin (ib) ; 1: E. Ont. (ib) ; 1, 2: Leeds Co., Chaffey Locks L. Opinicon, mossy shore, 15.VII.1975, Smith (ib) ; 1: ibidem, Chaffeys Locks , from Betula, Thuja leaf litter at still creek edge, 14.IV.1973, Frania (ib) ; 3: ibidem, fern & moss clumps in marsh, 18,. VI.1986, Davies (ib) ; 1: 5 mi S South March , 14.VI.1977, Smetana (ib) ; 1: Norfolk Co., Port Rowan , 2.-6.VI.1975, Smith (ib) ; 5, 5: Ottawa River , Deschênes Lookout, flood debris, 1.V.1985, Davies & Hamilton (ib) ; 1: Almonte , Alvar habitat, pitfall trap in wet zone, 22.IX.-6.X.1986, LeSage (ib) ; 1: Almonte , Alvar habitat, pitfall trap in dry zone, 19, VII.-19. VIII.1986, LeSage (ib) ; 1: Bells Corners , berlese muskrat nest, 9.VI.1983, Davies & Vermette (ib) ; 3: Carillon Pk , 12.X.1964, Kiteley (ib) ; 1: nr Clayton , Carnet, 22.V.1981, Babcock & Goulet (ib) ; 4, 6: Chaffey’s Locks Biol. St. , marsh alder litter, sphagnum, 16.X.1986, Davies (ib) ; 1, 1: Mer Bleue bog, moss ex dry ditch, 13.VII.1982, LeSage (ib) ; 1: Shirley’s Bay , pan trap, 21.-28.V.1985, Davies (ib). - PQ: 1, 1: Ste-Croix, Lotb, 13., 19.IX.1964, Aubé, Chantal ( CNC, cC) ; 1: Mont St-Bruno Chambly , 13.X.1975, idem (ib) ; 1: Longue-Pointe Saguenay , 3.IX.1977, idem (ib) ; 1: Esterel , 8.-13.VII.1977, Löbl ( MHNG) ; 2: near Ottawa , marsh refuse, 12.VIII.1976, Hammond ( NHML, cP) ; 6, 3: Ormstown , 1975-80, Kiteley ( CNC, cP) ; 15, 21: Montreal , 1969-83, Kiteley (ib) ; 3, 3: Montreal , Mer Bleue, 21.VII., 3.VIII.1973, 4.V.1975, 28.X.1987, Dondale & Masner, Smith, Redner & Starr, Chandler ( CNC, UNHD, cP) ; 1: Gatineau Park , Kingsmere, 27.IV.1968, Smetana ( CNC) ; 2: ibidem, Carnet , 4.V.1981, Goulet (ib) ; 1: Ridge Rd. , moss at stream, 20.VI.1984, Davies (ib) ; 1: Luksville , Ottawa River flood debris, 1.V.1985, Davies (ib) ; 1, 9: Longueuil , Chambly, 24.IX., 30.X.1978, 4.VII.1982, Chantal (cC) ; 1: Lancorale , Berth., 6.VI.1979, idem (ib) ; 1: St. Augustin , Portneuf, 22.X.1983, idem (ib) ; 1: Cap-Rouge (St-A), 3.IX.1973, idem (ib) ; 1: Ancienne-Lorette , 21.IX.1974, idem (ib). - NB: 1, 1: Kouchibouguac N. P., IX.1977, Miller (cP) ; 1, 1: York Co., Charters Settlement , margin of beaver pond in leaf litter, 1.V.2010, 27.VIII.2008, Webster (cW) ; 4, 3: same locality and habitat data but 5., 9., 14.IX.2009, idem (cW) ; 1: 15 km W of Tracy off Rt. 645, 45.6848’’N, 66.8821’’W, old red pine forest, Lindgren funnel trap, 16-30.VI.2010, Webster & MacKay (cW) ; 1: Restigouche Co., Jacquet River Gorge PNA, 47.8257’’N, 66.0779’’W, partially shaded cobblestone bar near outflow of brook at Jacquet River, under cobblestones & gravel on sand, 24.CV.2010, Webster (cW) ; 1: Queens Co., Cambridge W of Jemseg at "Trout Creek", 46.8231’’N, 66.1245’’W, silver maple swamp, sifting litter from crotch of multiple trunked silver maple, 3.IV.2006, idem (ib) .

U.S.A.: AK: 1, 3: Kenai Peninsula , Johnson Lake Campground 7mi SE Kasilof, 11.VI.1978, Smetana & Becker) ( CNC) ; 2: 5 mi N Homer , 2.VI.1978, idem (ib) ; 1: Achor R. at Hwy 1, 450‘, 2.VI.1978, idem (ib). - UT: 1: Benson, yellow headed blackbird nest, 24.VI.1973 ( NHML) ; 1: Logan Canyon , moss, 5.VIII.1972, Knowlton (ib) ; 2: Lache Co., Tony Grove Cr. Logan Cn, 7000‘, difting moss, 14.VII.1981, Campbell ( CNC) .- TX: 2, 3: Hardin Co. , Ghost Rond , Saratoga ( N), Berlese Sphagnum, 11.VI.1972, Suter (FMCh, cP) ; 1, 1: Orange Co., 3 mi NW Orange , 17.IV.1976, Smetana ( CNC) ; 1: 10 mi NW Orange , 20.IV.1976, idem (ib) ; 5, 9: Orange Co., 1 mi SW Bridge City , 18.IV.1976, idem (ib, cP) ; 3, 4: Houston Co., 11 mi E Ratcliff, 24.IV.1976, idem (ib). - LA: 2: "Louisiana", coll. Melly ( MHNG) ; 1: "LA" ( MCZH) ; 1: Tangipahoa Pa. 10 mi S. Hammond, 10.IV.1976, Smetana (cP); 16, 38: Calcasieu Pa. Choupique Bayou 7 mi N Hackberry , 15./ 16.IV.1976, Smetana ( CNC, cP) ; 2: St. Tammany Pa. W Pearl River at Hwy 90, 7.IV. 1976, idem (ib) ; 1, 6: Concordia Pa. 5 mi W Ferriday, 1.V.1976, idem (ib) ; 1: Calcasieu Pa. 4 mi W Starks, 19.IV.1976, idem (ib) ; 1, 1: Cameron Pa. 2 mi NW Holly Beach, 15.IV.1976, idem (ib) ; 6, 11: Ascension Parish , Gramery, N of 61 and I- 10, 30 o 09.804’N, 90 o 48.643’W, floating pitfall, 1.VI., 2.-15.VI., 1.-16.VII., 31.VII.16.VIII., 14.-26.VIII., 27.VIII.7.-IX. 2009, 10.-21.VI., 3.-15.VIII., 16.-30.VIII-., 25.IX.- 11.X., 12.-25.X.2010, K.A. Parys ( LSAM, cP) ; 1, 2: Vermillion Par. , White Lake , East side, 29 o 47.960’N, 92 o 30.322’W, marsh, grass litter, 22.III.2009, S. Park ( LSAM). - MS: 3: Washington Co., Stoneville, berlese rotten logs, 14.XII.1981, Snodgrass ( MSEM, cP) ; 2: Oktibbeha Co., Noxybee Ref. , hardwood litter, 21.VII.1981, 14.I.1983, idem (ib). - AL: 1 (cf. det.): Jefferson Co. , Birmingham, 1.XI.1958, Steeves (FMCh) ; 1: Tuscaloosa Co., McCalla env., 4.V.2004, Pütz (cAssing). - IA: 1: Iowa, coll. Fauvel ( IRScNB) ; 4: Clay Co., Trumbull Lake near Dickens, floor litter, moss, swamp, 15.VI.1961, Suter & Wagner (FMCh, cP). - MN: 4, 7: Marquette, Hubbard & Schwarz ( USNM) ; 1, 2: Elk River , sifting drift river bank, 22.IX.1957, Kiteley ( CNC, cP) ; 1, 1: Minneapolis , 31.VIII.1968, idem (ib). - WI: 2: Madison, Medota Bay, XI.1934, Dodge ( USNM) ; 2: Bayfield , Wickham (ib) ; 1: Ft. Lewis, 1.VII.1945, Arnaud ( CNC) ; 3, 11: Waukesha Co., Kettle Moraite St. Forest , pond bank, 1.IX.1976, Hammond ( NHML, cP) ; 1: Sand Lake , 45 o 51’N, 91 o 29’W, 25.VII.-2.VIII.1998, Hammond (ib) ; 31, 36: Kenosha Co., Chiwaukee prairie, Carol beach, 4.V.1968 mosses at marsh, 22.IX.1973 berlese marsh floor litter, 26.IV.1974, Berlese floor, at cattails, Suter (FMCh, AMNH, cP) ; 7: Kenosha Co., S of Carol Beach , Chiwiaukee prairie, 13.IX.1969, temporary pond floor at bush, idem (ib) ; 1, 1: Kenosha Co., Salem , Van Halter Bog, 24.IV.1975, Berlese mixed mosses unter Tamarack, Suter (FMCh) ; 2: Ashland Co., 15 mi SSE Ashland , 2.VIII.1978, Herman ( AMNH) ; 1, 1: Burlington , 6.III.1968, Brzoska ( AMNH, KSEM). - MI: 15, 26: " Michigan " ( FMCh, MHNG, NHMW) ; 5, 6: Marquette, Hubbard & Schwarz ( USNM, cP) ; 1, 3: Escanaba , idem, 31.V.1958, Kiteley (, CNC) ; 1: Grand Ledge, idem (cP) ; 1: Detroit, idem ( USNM) ; 1: Eagle River , idem (ib) ; 2: " Bachwng B., L.S., idem (ib) ; 15, 20: Clarkslake, coll. Fauvel, coll. Eppelsheim ( IRScNB, NHMW) ; 3: Clinton Co., Rose Lake Exp. St., 3.II.1966 ( AMNH) ; 3: Shiawassee Co., T 5N, RIW Section 23, oak -hickory forest, pitfall, V.1967, Schuh & Hlavac ( AMNH, cP) ; 1: Washtenaw Co., Pittsfield Twp , 22.III.1920, Hatch ( OSUC) ; 1: Berrien Co., Warren Dunes St. P., swamp litter, 5.VIII.1990, Chandler ( UNHD). - IL: 2: "Ill." ( USNM) ; 2: Union Co., 5 mi NE Reynoldsville, 9.V.1976, Smetana ( CNC). - IN: 2, 3: Porter Co. , Beverley Shores, debris along cattail marsh, VI.1958, Dybas (FMCh). - OH: 1: "Ohio", Belgrave ( USNM). - NH: 2, 3: Three Mile Id., 7.VI.1909, Blanchard ( MCZH) ; 7, 5: Strafford Co., 1 mi SW Durham , litter along marsh edge, 21.V.1982, 3.V. 1985, 1.XI.1989, Chandler ( UNHD, cP) ; 1: sift forest litter 5.XII.1981, idem (ib) ; 4, 9: ibidem, FIT, V-VIII. 1987, idem (ib) ; 1, 3: 3 mi SW Durham, Spruce Hole , leaf litter along pond, 30.VIII.1982, 27.III.1984, FIT: 10/ 23.VII.1987, idem (ib) ; 1: Rock Co., Odiorne Point St. P. 24.IX.1986, idem (ib) ; 3: Cheshire Co., Pisgah St.F., Pisgah Valley For. , 1080‘, wet grass litter, 20.VII.1990, idem (ib) ; 1, 4: Grafton Co., Bedell Bridge S. F. & Oliveirian Brook, maple litter along stream, 3.VII.1992, idem (ib) ; 4, 3: Merrimack Co., 1 mi E Concord , C. airport, pitfall trap, pine oak barrens, 30.X.-2.XI.2001, idem (ib).- MA: 10, 12: "Mass.", Blanchard ( MCZH, NHMW, cP) ; 2: Marion (1x HT von Eu. subiridipennis , FMCh; NHMW) ; 4, 4: Cambridge, Blanchard, Crotch, Hubbard & Schwarz ( IRScNB, MCZH, NHMW, USNM, cP) ; 1: Lowell ( IRScNB) ; 1: Framingham , 3.XII.1911, Frost ( MCZH) ; 1: Sherborn , 3.V.1945, idem (ib) ; 2: Hopkinton, 1921, Frost ( DEI) ; 1: Arlington , 24.I.1931, Darlington ( MCZH) ; 1, 1: Medfield , 16.VI.1900 (ib) ; 1, 1: Cape Cod , 8.VII.1975, Kiteley ( CNC). - RI: 8, 7: "R.I." ( USNM). - CT: 2: Middle Co., Mt. Higby Reservoir, near dam, east side, beach drift, 8.VI.2007, Chandler ( UNHD) ; 1: Middle Co., Wadsworth Falls State Park , Laurel Grove Road, leaf litter by stream, 8.VI.2007, idem (ib). - NY: 7, 16: "N.Y." (ib) ; 2: Long Island , 19.IV.1909, 7.XI.1920, Shoemaker (ib) ; 1, 1: Batavia , 26.VI.1928, Lewis ( AMNH) ; 2: Peekskill , Leng (ib) ; 2, 9: Seneca Lake , V.1965, Lenczy ( TMB, cP). - NJ: 2, 4: "N. J." ( USNM, cP) ; 1: Westville , 28.I.1899, McGroene ( USNM) ; 1: Moonachie , Schott (ib) ; 1: Belfrage (Mus. Stockholm) ; 1: Ithaca , 21.IV.1926, Bierig (FMCh) ; 1: Newark , VIII.1914, Dickerson ( AMNH) ; 2: Snake Hill (ib) ; 1: Rosette Park (cP). - PA: 4, 1: Pennsylvania, Zimmermann (Lektotypus und Paralektotypen: ZMB, cP) ; 1, 1: "Penna" (FMCh). - DC: 1: Shaw Ponds , 10.IV.1926, Barber ( USNM). - KY: 1: Fulton, Reeves (ib). - VA: 1: Ft. Munroe, Hubbard & Schwarz (ib) ; 13, 16: Plummer’s Island , litter by pools, 29.VIII.1976, Hammond ( NHML, cP) ; 1: 7 mi W Washinton, near R. Potomac, 24.VIII.1976, idem (ib). - NC: 1: Mecklenburg Co., Charlotte , 26.III.1992, Cornell ( UNHD) ; 2: Wilkes Co., Antioch Cr 2325 & Brier Cr, 26.X.2006, idem (ib) ; 1, 1: Richmond Co., near Hamlet , Gibson pond, 22.V.2004, idem (ib, cP). - FL: 1: Crescent City, Hubbard & Schwarz ( USNM) ; 1: Sand Point (ib) ; 1: Enterprise (ib) ; 7, 13: Destin , 29.III.1975, 23./ 31.I., 24.II.1976, 21., 25., 30.I.1980, 24., 25.I.1981, 4.III.1983, Kiteley ( CNC, cP) ; 3: Ft. Walton Beach , 27.III.1975, 18.I.1980, Kiteley (ib) ; 1: DeLand ( AMNH) ; 3, 2: Gainesville , swamp litter, 13.II.1979, Becker ( CNC, cP) .

B e m e r k u n g e n: Diese Art lässt sich relativ leicht anhand ihrer irisierenden Elytren erkennen, die Determination muss aber, um sicher zu gehen, durch Genitalpräparation verifiziert werden. Der Aedoeagus ähnelt denen der Arten Eu. pugetensis HATCH und Eu. bierigi PUTHZ stark, lässt sich aber von beiden sicher unterscheiden (Abb. 32, 33). Die Weibchen lassen sich anhand der Gestalt des 8. Sternits trennen, das am Hinterrand immer vergleichsweise tief ausgeschnitten ist ( Abb. 66, 67 ). Dieses Merkmal habe ich erst jüngst festgestellt. Deshalb bedürfen alle Weibchen von Fundorten, von denen keine Männchen untersucht wurden, der erneuten Untersuchung (s. u.).

Da beide Arten verschiedentlich auch zusammen erbeutet wurden, ist eine Genitalpräparation unerlässlich.

, die erneut untersucht werden müssen: BC: 1: Vancouver, Victoria, Hubbard & Schwarz ( USNM). - ON: 1: Owen Sound, 1937, Cameron ( NHML). - OR: 1: Portland, Wickham (FMCh). - UT: 1: Utah Lake , Hubbard & Schwarz ( USNM). - SD: 1: Oconee Co., 7 mi N NC S state line on Hwy 107, 15.V.1983, Chandler ( UNHD). - NE: 1: Butler Co. , Platto R. 14 mi E Wahoo ( AMNH). - IA: 1: Cedar Rap , 4.V., Wickham ( USNM). - NH: 1: Mt. Washington ( AMNH). - MA: 1: Nantucket, 7.VI.1927 ( MCZH) ; 1: Swansen ( MCZH). - NY: 1: Whiteface Mt. , Leng (FMCh). - NJ: 1: Heehawken ( AMNH). - SC: 1: " S.Car " ( IRScNB) .

Figures

Abb. 66-85: 8. Sternit der Weibchen (66-86), Hinterrand des 6. Sternits des Männchens (90), 7. Sternit (91, 92) und 8. Sternit des Männchens (85, 89), Aedoeagus (87, 88) von Euaesthetus americanus ERICHSON (66, NC; 67, WI), Eu. pugetensis HATCH (68, NS), Eu. pacificus FALL (75, Qu.Ch.Is), Eu. punctatus CASEY (76, Ft. Munroe), Eu. floridae CASEY (77, FL), similis CASEY (69, AR), Eu. smetanai PUTHZ (70, PT), Eu. chandleri PUTHZ (71, PT), Eu. websteri nov.sp. (72, PT), Eu. chantali PUTHZ (73, PT), Eu. ganglbaueri BERNHAUER (74, PQ), Eu. dybasi PUTHZ (78, PT), Eu. suteri nov sp. (79, Chiwaukee Prairie; 83, PT), Eu. hermani nov.sp. (80, PT), Eu. franki PUTHZ (81, PT), Eu. mundulus CASEY (82, MA), Eu. albertae PUTHZ (84, WI), Eu. brachypterus nov.sp. (85, 88, HT), Eu. wickhami nov.sp. (86, PT), Eu. scabripennis nov.sp. (87, 89-92, HT, PT).- Massstab = 0,1mm (89 = 66-86; 87 =88).