Pachybrachis obsoletus, Suffrian, 1852

Barney, Robert J., 2018, Definition and Revision of the pectoralis Species-Group of Eastern North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae), The Coleopterists Bulletin 72 (3), pp. 471-499 : 494

Pachybrachis obsoletus

Specimens Examined. Holotype + 471 specimens. USA: ALABAMA: Clay Co., Millerville, 29.vi.1964, on Salix, E. J. Balsbaugh, Jr. [1♀, AUEM]; Coffee Co., Elba, 9.vii.1963, on Cornus, E. J. Balsbaugh, Jr. [466 7♀♀, AUEM]; Lee Co. , Meadows Mill, 14.vi.1963, E. J. Balsbaugh, Jr. [1♀, AUEM]; Marshall Co. , 1.5 mi W Horton, 27. vii.1963, E. J. Balsbaugh, Jr. [1♀, AUEM]. ARKANSAS: Hempstead Co. , Hope, 5.viii.1925 [1♀, MCZ-FALL]; Logan Co. , Magazine Mt. , 22- 26.vi.1988, D. G. LeDoux [16, TAMU]. COLO- RADO: Unknown county , Colo, 181 [16, USNM]. CONNECTICUT: Litchfield Co. , Falls Village , 5. viii.1912, pine grove, A. C. Burrill [1♀, WIRC]. DELAWARE: New Castle Co. , Newark, 7. viii.1953, C. A. Triplehorn [2♀♀, OSUC]. GEORGIA: Clarke Co. , Whitehall Forest , 21-22.

v.1975, R. Turnbow [16, FSCA]; Emanuel Co., Ohoopee Dunes Nat. Area, 10.vi.2006, R. Turnbow [1♀, RHTC]. ILLINOIS: Adams Co. , Quincy , 20. vi.1898, W. S. Marshall [16 1♀, WIRC]; Carroll Co. , Miss. Palisades St. Pk., 14.vii.1982, R. J. Barney [16 1♀, RJBC]; Cass Co. , Beardstown , 24.vi.1953, on Betula nigra, Sanderson & Moore [3266 32♀♀, INHS]; same data, except on Acer saccharinum , [1466 10♀♀, INHS]; Bluff Springs Hill Prairie , 5.4 mi W Virginia, 25.vi.1981, R. J. Barney [2♀♀, RJBC]; Panther Creek Cons. Area , 25. vi.1981, R. J. Barney [1♀, RJBC]; Champaign Co. , Champaign , 25.v.1955, on Salix sp. , J. Kingsolver [16 3♀♀, INHS]; 1 mi E Urbana, R. J. Barney [1♀, RJBC]; Cook Co. , Chicago , 29.vii [16, MCZ- FALL]; same data, except 29.vi.1911, E. Liljebad [16 5♀♀, USNM; 366 3♀♀, HCF, MCZ]; DuPage Co. , Bloomingdale , 1.vii.2017, ex. Salix sp. , R. J. & S. A. Barney [266 3♀♀, RJBC]; Kankakee Co. , Aroma Park , 6.viii.1947, on birch, Burks & Sanderson [16 4♀♀, INHS]; Marion Co. , 2 mi N Alma, 18.vi.1981, ex. Salix sp. , R. J. Barney [2♀♀, RJBC]; Mason Co. , Sand Prairie-Scrub Oak N.P., 3 mi E Bath, 25.vi.1981, R. J. Barney [2♀♀, RJBC]; McDonough Co. , Macomb , 14.vii.1980, Y. Sedman [16 1♀, NDSIRC]; Piatt Co. , 2 mi W Seymour, 25. vi.1981, ex. Salix, R. J. Barney [1♀, RJBC]; Pike Co. , 1 mi W Pearl, 24.vi.1981, R. J. Barney [1♀, RJBC]; St. Clair Co. , Cahokia , 21.vi, Liebeck Collection [1♀, HCF, MCZ]; Vermillion Co. , Kickapoo St. Pk., 14.vi.1981, ex. Salix, R. J. Barney [16, RJBC]; Whiteside Co. , Thomas-Fulton Sand Prairie , NE Filton, Railroad Lane , ex. Rhus sp. , 14. vi.2016, R. J. Barney & S. M. Clark [2♀♀, RJBC; 1♀, BYUC]. INDIANA: Elkhart Co. [1♀, MCZ]; Harrison Co. , 1.vii.1937, on willow [1♀, PERC]; Jasper Co. , 10.vii.1935 [366 1♀, PERC]; Lagrange Co. , Dallas Lake , 1.vii.1984, D. A. Rider [16 2♀♀, LSAM]; Marion Co. , 14.vi.1916, W. S. Blatchley [16 1♀, TAMU]; same data, except 23.vi.1918, [1♀, PERC]; same data, except 5.vi.1921 [16, PERC]; same data, except 11.vi.1923 [1♀, PERC]; Porter Co. , 19.vii.1941, T. Daggy [16, NCSU]; Pulaski Co. , 5.vii.1985, D. W. LaHue [16 4♀♀, PERC]; Starke Co. , 5.vii.1935, D. W. LaHue [16, PERC]; St. Joseph Co. , Mishawaka , 16.vi.1932, on willow, A. W. Trippel [1♀, PERC]; Tippecanoe Co. , Lafayette , 20.vii.1932, on willow, A. W. Trippel [1♀, PERC]; same data, except 2-22.vi.1955, ex. Salix, N. M. Downie [16 2♀♀, AMNH]; same data, except 16.vii.1956, ex. Salix, G. H. Nelson [1♀, AJGC; 16 1♀, MCZ]. IOWA: Story Co. , Ames , 30. vi.1890 [266 6♀♀, ISIC]; Unknown county , Ia. [1♀, MCZ-FALL]; Eddyville [1♀, MCZ-FALL]. KAN- SAS: Douglas Co. , 900 ft., F. H. Snow [16 2♀♀, HCF, SEMC]; Nemaha Co. , 5 mi NNW Onaga, 6- 12.vi.2006, canopy trap, A. Cruz [1♀, SEMC]; Rawlins Co. , 2850 ft., F. X. Williams [1♀, HCF, SEMC]. KENTUCKY: Carlise Co. , 2 mi E Cunningham, 15.vi.1965, willow [16, OSUC]; Fulton Co. , 26.vii.1972, P. H. Freytag [1♀, UKIC]; Scott Co. , 28.vii.1971, D. E. Barnett [1♀, UKIC]; Trigg Co. , Fort Campbell , 10.vii.2008, ex. Salix, R. J. Barney [3♀♀, RJBC]. MAINE: Androscoggin Co. , Wales , 20.vii.1908, C. A. Frost [1♀, MCZ]; Aroostook Co. , St. Francis , 9.ix.1954, A. E. Brower [266 1♀, UNH]; Kennebec Co. , Monmouth , 30. vii.1908, C. A. Frost [1♀, MCZ]; Knox Co. , Bred , Friendship , 13.vii.1936 [1♀, UNH]; Oxford Co. , Paris , 15.vii.1918, C. A. Frost [1♀, MCZ]; same data, except 16.vii.1938 [1♀, HCF, MCZ]; same data, except 14.vii.1946 [2♀♀, MCZ]; Piscataquis Co. , Kokadjo , 19.vii [16, UNH]; York Co., Old Orchard , 23.vi.1900 [16 2♀♀, FCB, MCZ]. MARYLAND: Anne Arundel Co. , Patuxent Wildlife Res. Ctr., 19.v.1998, J. F. Cavey [16, JFCC]; Baltimore Co. , Chase , 31.viii.1990, J. F. Cavey [1♀, JFCC]; Deer Park , Soldiers Delight , 20. ix.1990, J. F. Cavey [1♀, JFCC]; Garrett Co. , The Glades of Cherry Creek , 18.vi.1996, ex. Vaccinium, J. F. Cavey [266 3♀♀, JFCC]; Worcester Co. , Whiteburg , 17.vi.1985, J. F. Cavey [16, JFCC]. MASSACHUSETTS: Middlesex Co. , Framingham , 10.vi.1906, C. A. Frost [1♀, HCF, MCZ]; same data, except 4.vii.1946 [2♀♀, MCZ]; Lowell , 4. viii.1896 [1♀, MCZ-FALL]; Tyngsboro , 17. vii.1902 [16, MCZ-FALL]; same data, except 1-20. vii.1914 [1♀, MCZ-FALL]; same data, except 6. ix.1920 [1♀, MCZ-FALL]; Plymouth Co., Marion , 9-12.vii.1902 [1♀, MCZ-FALL]; Worcester Co. , Southboro , 27.vi.1926, C. A. Frost [16 1♀, HCF, MCZ]. MICHIGAN: Cheboygan Co. , Cheboygan , vii [1♀, CMC]; Chippewa Co. , Sault LS, 21.vii [266 1♀, Fall 1915 Revis, USNM]; Kalamazoo Co. , Gull Lake Biol. Sta., 28.vi.1972, R. D. Ward [16, CIMNH]; Kalkaska Co. , 16.viii.1966, L. F. Wilson [16, MSUC]; Grand Traverse Co. , T 26N R10 W Sec 25, 16.vii.1982, N. C. Elliott [16 1♀, MSUC]; same data, except 3.viii.1982 [16, MSUC]; Ingham Co. , Ag. College, H. E. Weed [1♀, PERC]; Van Buren Co. , 17.viii.1966, R. L. Fischer [266, MSUC]; Wayne Co. , Detroit [1♀, Fall 1915 Revis, USNM]; Unknown county , Mich. [5♀♀, teste Fall, CMC]. MINNESOTA: Brown Co. , New Ulm , 27.vi.1968, V. M. Kirk [366 2♀♀, SDSU]; St. Louis Co. , 14 mi W Ely, 30.vi.1984, Wappes & Downie [1♀, FMNH]. MISSISSIPPI: Bolivar Co. , Great River Road State Park , 22.iv.1981, ex. Salix, R. J. Barney [16 2♀♀, RJBC]; DeSoto Co. , hwy.61, 2.5 mi SW jct.302, 14. vii.2002, R. Turnbow [1♀, RHTC]; Pontotoc Co. , 1 mi SE Ecru, 4.vi.1980, W. H. Cross [16, MEM]. MISSOURI: Pettis Co. , Friendly Prairie , 6.vi.1980, E. G. Riley [1♀, UMRM]; Reynolds Co. , Sutton’ s Bluff Campground , 7.vii.1984, E. G. & M. A. Riley [16, LSAM; 1♀, TAMU]. NEBRASKA: Cuming Co. , West Point , 27.vi. 1887, on willow [4♀♀, UNSM]; Hall Co. , Grand Island , 22.vi.1968, B. C. Ratcliffe [1♀, UNSM]; Otoe Co. , Nebraska City , Elliott [1♀, MCZ-FALL]; Unknown county , Sand Hills , vii [266 2♀♀, UNSM]. NEW HAMP- SHIRE: Grafton Co. , Franconia , Liebeck Collection [1♀, MCZ]; Hillsborough Co. , Antrim, 24. vi.1940 [2♀♀, MEM]; Rockingham Co. , Derry, 1. vii.1920 [466 4♀♀, MCZ-FALL]; Hampton , 11. vii.1933, S. A. Shaw [1♀, UNH]; Rye , 21.vii.1926 [1♀, MCZ-FALL]; Strafford Co. , Dover , 10. vi.1934, B. G. Markos [16, UNH]; Durham , 5. vi.1936, B. G. Markos [16, UNH]; same data, except 24.vii.1977, W. J. Morse [1♀, UNH]; same data, except 1 mi SW Durham, 30.ix.1987, W. J. Morse [1♀, UNH]; same data, except 14.vii.1992 [1♀, UNH]; same data, except 28.viii.1992 [1♀, UNH]; same data, except 21.viii.1993 [1♀, UNH]; Farmington , 3.viii.1900 [1♀, MCZ-FALL]; Unknown county , N. H. [1♀, “ tridens in Lec. Coll.”, MCZ-FALL]. NEW JERSEY: Burlington Co. , 4 mi W Chatsworth, 8-9.vi.1997, E. G. Riley [16 1♀, EGR#158 , EGRC]; Camden Co. , Atco , 2.vi, Liebeck Collection [16 1♀, MCZ]; Clementon , 7.vi, Liebeck Collection [1♀, MCZ]; Unknown county , N. J. [1♀, MCZ-FALL]; N. J., F. A. Eddy [1♀, MCZ]. NEW MEXICO: Unknown county , N. M., F. H. Snow [16, MCZ-FALL; 2♀♀, HCF, SEMC]; Magdalena Mts. , viii.1894, F. H. Snow, Det. By Horn, “162. Horn’ s letter Oct. ‘94” [1♀, HCF, MCZ- FALL]. NEW YORK: Clinton Co. , Silver Lake , 23. vii.1997, R. Turnbow [1♀, RHTC]; Essex Co., Jay , 6.vii.1999 [1♀, RHTC]; St. Lawrence Co. , Rossie , 13.v.1959, N. M. Downie [266 1♀, AMNH]; Unknown county , N. Y. [1♀, MCZ-FALL]. NORTH CAROLINA: Wake Co. , Raleigh , 30.vii.1942, C. S. B. [16 2♀♀, NCSU]; same data, except 2.vi.1953, sweeping willow, B. K. Dozier [266 6♀♀, FSCA]. OHIO: Clinton Co. , 9.xi.1960, F. J. Moore [1♀, OSUC]; same data, except 26.vii.1962 [1♀, OSUC]; Delaware Co., 29.v.1949, D. J. & J. N. Knull [1♀, OSUC]; Vinton Co. , Jackson Twp., 13.vii.1938, J. H. Hughes [366 1♀, UGCA]; 17.viii.1939 [266 1♀, UGCA]; Warren Co. , Franklin , 6.vi.1946, Beaten ex. fir [1♀, OSUC]. OKLAHOMA: Latimer Co. , vi.1983, K. H. Stephan [9♀♀, TAMU]. PENNSYLVANIA: Allegheny Co. , Pittsburgh , 20. vi, H. Klages [266 1♀, CMNH]; Dauphin Co. , Dauphin , 4.vii, H. W. Wenzel Collection [16, OSUC]; Heckton Mills , 24.vi.1961, E. U. Balsbaugh, Jr. [1♀, AUEM; 1♀, NDSIRC]; same data, except 8-10.vii.1962, taken on Alnus [16 1♀, AUEM; 266 5♀♀, NDSIRC]; Unknown county , Pa [266, MCZ]. SOUTH DAKOTA: Brookings Co. , Brookings , 20.vii.1965, V. M. Kirk [16, NDSIRC]; Lake Campbell , 9.vii.1965, on willow, V. M. Kirk [1166 11♀♀, NDSIRC]; Poinsett Lake , 17.vii.1965, V. M. Kirk [1♀, NDSIRC]; Gregory Co. , Ft. Randall Dam, 1.vii.1968, E. U. Balsbaugh, Jr. & G. Alleman [1♀, NDSIRC]; Hughes Co. , Blunt , 18.vii.1945, H. C. Severin [16, SDSU]. TENNESSEE: Campbell Co. , 21.v.1958, F. W. Mead [16, FSCA]; Henderson Co. , Natchez Trace State Park , 13.vi.1978, R. L. Fischer [16, MSUC]; Sevier Co. , Gatlinburg , GSMNP, 3500’, 19.vii.1947, R. H. Whitaker [666 11♀♀, INHS]; Shelby Co. , Memphis , ix, F. M. Hull [2♀♀, SEMC]. VIRGINIA: Botetourt Co. , Hwy. 615, near Hipes , 24.v.2006, E. G. Riley [16, EGRC]. WEST VIRGINIA: Wayne Co. , Virginia Point Park , 24.vi.2008, ex. Salix, R. J. Barney [16 2♀♀, RJBC]. WISCONSIN: Columbia Co. , Portage , 20.vii.1917, S. B. Fracker [2♀♀, WIRC]; Crawford Co. , Hogback Prairie SNA, 43.2145 o N, 90.8716 o W, 7.vi.2016, E. G. Riley [16, EGRC]; Dane Co. , 30.vi.1949, W. McNeel [2♀♀, WIRC]; Madison , 19.vii.1929, C. L. Finke [2♀♀, WIRC]; same data, except 26.vi-16.vii.1940, ex. Salix, H. R. Dodge [366 9♀♀, TAMU]; Mazomanie , 29. vii.1918, C. L. Finke [3♀♀, WIRC]; Dunn Co. , 29. vii.1949, Fraxinus nigra, W. McNeal [1♀, WIRC]; same data, except Ulmus americana [2♀♀, WIRC]; Grant Co. , W of Blue River , Hwy. 133, 43.1355 o N 90.6759 o W, 11.vi.2016, ex Salix sp. , R. J. Barney [266 15♀♀, RJBC]; Sauk Co. , Leopold Reserve , 2. vii.1987, L. F. Goodman [16, WIRC]; Waupaca Co. , Clintonville, 4.vii.1938, birch foliage, H. R. Dodge [1♀, WIRC]; Wood Co. , 28.vi.1949, ex. Quercus borealis, W. McNeel [2♀♀, WIRC]. WYOMING: Albany Co. , Centennial, 16. viii.1968, on Salix, P. H. Freytag [16, UKIC]; Medicine Bow Nat. For., Curtis Gulch Cmpgrd., 29. vi-4.vii.1991, P. R. Edelman [1♀, UKIC] .