Xanthocomus concinnus ( Casey, 1916 ) Gimmel, 2011

Gimmel, Matthew L., 2011, Review of the species described in Leptostilbus Casey in North America (Coleoptera: Phalacridae: Xanthocomus Guillebeau), Insecta Mundi 2011 (188), pp. 1-8 : 6-7

Xanthocomus concinnus ( Casey, 1916) , comb. nov.

Leptostilbus concinnus Casey 1916: 72 .

Diagnosis. May be distinguished from X. rutilans by the absence of obvious punctures in the elytral intervals ( Fig. 4 ). The male hind tibiae are similar to those of the female, and the apical spurs are directed more apically. The aedeagus provides the most reliable characters for separation ( Fig. 7, 8 ), including the fused parameres (movable apical portion of tegmen) with a broad median cleft, and the apex of the penis acutely pointed medially.

Type material. Three syntypes in USNM, lectotype here designated in order to stabilize the species name, point-mounted male with genitalia removed and mounted in DMHF on an acetate card on the same pin, “·Miss [=Vicksburg, Mississippi] // CASEY \ bequest \ 1925 // TYPE USNM \ 48984 [number handwritten] [red label] // concinnus \ Csy. // LECTOTYPE \ Leptostilbus \ concinnus Casey \ des. M.L. Gimmel 2010 [red label]” ( Fig. 2 ) ( USNM). Paralectotypes (2): with labels, one female with genitalia dissected, “·Miss // CASEY \ bequest \ 1925 // concinnus [numeral corresponding to paratype number] \ PARATYPE USNM \ 48984 [numbers handwritten] [red label] // PARALECTOTYPE \ Leptostilbus \ concinnus Casey \ det. M.L. Gimmel 2010 [yellow label]”.

Other material examined (n=126). USA: ALABAMA: Jefferson Co.: Birmingham , 10 Aug 1955, at light, H.R. Steeves, Jr. (1, FMNH) ; Lawrence Co.: Joe Wheeler State Park , 34°47´09´´N, 87°23´16´´W, 27 May 2004, blacklight in mixed forest, T.L. Schiefer (1, MEMU) ; ARIZONA: state record only: 18 Nov 1907, A. Koebele (2, FMNH) ; DELAWARE: New Castle Co.: Newark , 03 May 1969, student collector (1, USNM) ; FLORIDA: Alachua Co.: 27 Mar 1954, F.W. Mead (1, FSCA) ; Gainesville , 16 Apr 1955, at light, R.A. Morse (1, FSCA) ; near Paynes Prairie State Park , 07 Nov 1986, at light, P. Skelley (1, FSCA) ; Collier Co.: Bonita Springs , 11 Jul 1972, UV light, M. Druckenbrod (1, USNM) ; Highlands Co.: Lake Placid , 13 Jul 1948, L.D. Beamer (2, SEMC) ; vicinity of Sebring Airport , 09 Apr 1994, R. Turnbow (1, FSCA) ; Hillsborough Co.: Tampa, Mac Dill Field , 5-15 Apr 1943, B. Malkin (1, FMNH) ; Indian River Co.: Vero Beach , 12 May 1964, W.L. Bidlingmayer (1, FSCA) ; Lafayette Co.: Hwy. 27, Suwannee River near Branford , 17 Apr 1999, S.M. Clark (1, BYUC) ; Marion Co.: Ocala National Forest, Big Scrub Campground , 12 Mar 1977, blacklight, D. Platt & E. Riley (1, EGRC) ; Ocala National Forest , 24 Jul 1998, mercury vapor and blacklight, R. Turnbow (1, UGCA) ; Lynn , 23 Jun 1995, M.C. Thomas (1, FSCA) ; Miami-Dade Co.: 6 miles N of Homestead , 15 Jul 1972, beating, M. Druckenbrod (1, USNM) ; Homestead , 05 Jan 1977, W.E. Steiner (1, USNM) ; Pinellas Co.: Dunedin , 05 Apr 1921, S. W.B. (1, AMNH) ; Clearwater , 11 Apr 1943, B. Malkin (1, FMNH) ; Honeymoon Island State Park , 04 May 1988, E.G. Riley (1, TAMU) ; Saint Johns Co.: Ponte Vedra Beach , 02 Mar 1945, sifted from wash-up, L. Lacey (1, AMNH) ; Saint Lucie Co.: 20 Aug 1986, R.L. Escher (1, FSCA) ; Seminole Co.: Sanford , Apr 1956, W. Rosenberg (1, USNM) ; GEORGIA: Clarke Co.: Athens, Horseshoe Bend , 28 Aug 1967 (1, UGCA) ; Lowndes Co.: 21 Jul 1962, E.I. Hazard (1, FSCA) ; McIntosh Co.: Eulonia , 16 Mar 1984, sweep, S.C. Marken (1, UNHC) ; ILLINOIS: Cook Co.: Mar, Blackwelder (1, USNM) ; Argo , 28 Apr 1938, H. Dybas (1, FMNH) ; Evanston , 05 Jun 1904 (1, FMNH) ; DuPage Co.: Argonne National Laboratory , 12 Jun 1967, bait trap, J. Wagner & W. Suter (1, FMNH) ; same but 05 Jul 1967 (1, FMNH) ; Warren Co.: Roseville , 12 Aug 1950, R.I. Sailer (1, USNM) ; Winnebago Co.: New Milford , 23 Jun 1944, H.S. Dybas (1, FMNH) ; INDIANA: Marion Co.: S. W.B. (1, AMNH) ; KANSAS: Jefferson Co.: Falin property, 1.5 km N of jct. 94 th St. & Kingman Rd. , 39°13.38´N, 95°24.24´W, 19-24 Jul 2005, ex FIT, lower meadow, KAN1F05 153, Z.H. Falin (1, SEMC) ; LOUISIANA: Ascension Par.: near Sorrento , 30°10.423´N, 90°52.467´W, 18 May 2008, at light, M. Ferro & M. Gimmel (1, LSAM) ; Bossier Par. : 3 Feb 1938, soil in peach orchard, W.F. Turner (1, USNM) ; East Baton Rouge Par.: Baton Rouge , 08-11 May 1998, at light, A. Tishechkin (1, LSAM) ; Natchitoches Par.: Kisatchie National Forest, Red Dirt Wildlife Management Area , 05-06 Apr 1985, D.A. Rider (1, LSAM) ; same but 20 Jun 1986, E.G. Riley (1, LSAM) ; Saint Tammany Par. : Lake Ramsay Wildlife Management Area, SC 3-3, 22-24 Aug 1997, longleaf pine savannah pitfall trap, D. Colby (1, LSAM) ; West Feliciana Par.: Feliciana Preserve , 30°47.68´N, 91°15.24´W, beating grass tussocks, 12 Mar 2006, M. Gimmel (2, LSAM) ; same but 19 Feb 2011 (2, LSAM) ; MARY- LAND: Montgomery Co.: Potomac , 28 Aug 1973, W.E. Steiner (1, USNM) ; same but 16 May 1974 (1, USNM) ; same but 17 May 1974 (1, USNM) ; Prince Georges Co.: Greenbelt Park , 25 Dec 1971, Andropogon, M. Druckenbrod (1, USNM) ; same but 27 Feb 1972 (2, USNM) ; Cheverly , 38°56´N, 76°55´W, 19 Jul 1994, W.E. Steiner & J.M. Swearingen (1, USNM) ; MASSACHUSETTS: Middlesex Co.: Groton, Spencer Circle , 19 Aug 2008, T. Murray (1, UNHC) ; MICHIGAN: Wayne Co.: Detroit, 13 Sep (1, USNM) ; Detroit , 31 May, H.C. Fall collection (1, MCZC) ; MISSISSIPPI: Franklin Co.: tributary of McGehee Creek, T6N, R4E, Sec. 26 SW, 27 Jul 1992, T.L. Schiefer (1, MEMU) ; Lincoln Co.: 10 Mar 1938, W.F. Turner (1, USNM) ; Oktibbeha Co.: Craig Springs , 27 Nov 1981, white pan trap on ground, W.H. Cross (1, MEMU) ; Craig Springs , 25 Jan 1982, interception trap-black, C.L. Snodgrass (1, MEMU) ; MISSOURI: Randolph Co.: 1 mile E of Moberly , 30 Apr 1972, E.G. Riley (1, EGRC) ; NEW YORK: Richmond Co.: Staten Island, Great Kills , 20 Oct 1939 (1, FMNH) ; Suffolk Co.: 02 May 1960, M.I. Blenderman (2, AMNH) ; same but Jun 1960 (1, AMNH) ; same but 17 Jun 1960 (2, AMNH) ; same but 09 Oct 1968 (1, AMNH) ; same but 20 Sep 1970 (1, AMNH) ; NORTH CAROLINA: Wake Co.: Schenck Forest, near Raleigh , 10 Apr 1994, sweeping, C.R. Bartlett (1, UDCC) ; OHIO: Cuyahoga Co.: Bedford , 19 May 1945, J.C. Pallister (1, AMNH) ; Franklin Co.: Sharon Woods Metropolitan Park , 26-30 Jun 1973, A.J. Penniman (1, MTEC) ; OKLAHOMA: Atoka Co.: 1 mi N of Caney , 17 Nov 1959, indian grass, chinch bug survey (1, OSEC) ; Latimer Co.: Oct 1982, K. Stephan (1, TAMU) ; same but Nov 1984 (1, TAMU) ; same but Apr 1988 (1, TAMU) ; same but Jul 1988 (1, TAMU) ; same but Dec 1991 (1, TAMU) ; same but Jun 1993 (1, TAMU) ; same but Jul 1995 (1, TAMU) ; Nov 1984, sifting flood debris, K. Stephan (1, TAMU) ; 5 miles W of Red Oak , 07 May 1977, K. Stephan (1, TAMU) ; same but 02 Jul 1977 (1, TAMU) ; same but Jul 1980 (2, TAMU) ; same but Sep 1980 (1, TAMU) ; same but Aug 1981 (1, TAMU) ; Payne Co.: 1 mile W of Stillwater , 11-14 Jul 1977, Malaise trap (1, OSEC) ; Lake Carl Blackwell , 31 Jul 1993, S. Sheffield (2, OSEC) ; near Lake Carl Blackwell , 16 Aug 1993 (1, OSEC) ; OSU pasture 15, 22 Jan 1997, Berlese funnel sample in pasture, J. Gibson (1, OSEC) ; Sequoyah Co.: 4 miles E of Vian , 17 Nov 1959, big bluestem, chinch bug survey (1, OSEC) ; PENNSYLVANIA: Montgomery Co.: Flourtown , 27 Jul 1949, at light, W.F. Chamberlain (1, TAMU) ; SOUTH CAROLINA: Charleston Co.: Charleston , Jun 1943, B. Malkin (1, FMNH) ; TEXAS: Brazos Co.: Jct. Hwy. 30 & Navasota River , Apr 1994, sweep, E.G. Riley (1, TAMU) ; Cameron Co.: Sabal Palm Grove Sanctuary , 20 Oct 1990, T. Carlow & E. Riley (1, TAMU) ; Galveston Co.: 3.5 miles SW of Jamaica Beach , 29 Mar 1997, night sweeping behind sand dunes, E.G. Riley (1, TAMU) ; Hidalgo Co.: Bentsen R.G.V.S.P. (site 2), 26.18009°N, 98.38461°W, 20 Sep - 03 Oct 2008, UV light, J. King & E. Riley-191 (4, TAMU) ; Kleberg Co.: ca. 1 mile S of Nueces County line, 15 May 1999, sweep near beach, E.G. Riley (14, TAMU) ; Orange Co.: Orange , 24 Aug 1964, P.J. Spangler (1, USNM) ; Robertson Co.: 1.5 miles N of Benchley , 26 Apr 1987, sweep marsh-day, R. Anderson (1, TAMU) ; San Patricio Co.: Welder Wildlife Refuge , 28 Apr 1979, R. Turnbow (1, FSCA) ; Shelby Co.: Flat Fork Creek, Hwy. 96 near Tenaha , 16 Oct 1993, S.M. Clark (1, BYUC) ; Starr Co.: Rio Grande City, Fort Ringold , 9-10 Nov 2002, blacklight trap, D. Hildebrandt (1, MEMU) ; state record only: Belfrage (2, MCZC) ; TENNESSEE: Blount Co.: Great Smoky Mountains National Park, Cades Cove ATBI Plot , MT-0320021007, 23 Sep - 07 Oct 2002, Malaise trap, I.C. Stocks (1, LSAM) ; VIRGINIA: Accomack Co.: Wallops Island , 01 Jun 1913, W.L. McAtee (1, USNM) ; WISCONSIN: Racine Co.: Burlington , 03 Sep 1966, D.W. Brzoska (1, USNM) .

Distribution ( Fig. 10 ). Widely distributed in the eastern United States, from Massachusetts and Wisconsin south to Texas and Florida, and Arizona (state record only).

Figures

Figures 1-4. Xanthocomus spp. lectotype labels and dorsal habitus. 1,3) X. rutilans (Casey). 2,4) X. concinnus (Casey).

Figures 5-8. Aedeagus of Xanthocomus spp. 5-6) X. rutilans (Cameron Co., Texas). 5) Tegmen, ventral aspect. 6) Penis, ventral aspect. 7-8) X. concinnus (West Feliciana Par., Louisiana). 7) Tegmen, ventral aspect. 8) Penis, ventral aspect. Scale bars = 0.5 mm.

Figures 9-10. Distribution of Xanthocomus spp. in North America (star = type locality; square = state record only). 9) X. rutilans. 10) X. concinnus.