GYRINIDAE

Hubbard, Todd, 2017, Aquatic Coleoptera (Dryopidae, Dytiscidae, Elmidae, Gyrinidae, Haliplidae, Helophoridae, Hydrochidae, Hydrophilidae, Noteridae, Psephenidae) of Iowa: Distributional Records and Notes, The Coleopterists Bulletin 71 (3), pp. 471-505 : 491-493

GYRINIDAE

Dineutus assimilis (Kirby) . Allamakee: Yellow R., Postville, CTH, 8/14/00; Benton: Cedar R., Vinton, MWB, 9/14/07; Black Hawk: West Fk. Cedar R., Finchford, CTH, 9/15/08; Bremer: Cedar R., Janesville, CTH, 8/6/12; Buchanan: Lime Cr. Brandon, CTH, 8/31/94, 9/4/07; Butler: West Fk. Cedar R., Lake Considine County Park, CTH, 10/2/12; Cass: Indian Cr., Lewis, TMM, 9/22/11; Cedar: Cedar R., West Branch, CTH, 9/12/06; Cerro Gordo: Winnebago R., Mason City, CTH, 8/7/12; Clay: Little Sioux R., Spencer, TMM, 8/14/12; Clayton: Miners Cr., Guttenberg, CTH, 10/8/07; Clinton: Sugar Cr., Preston, CTH, 8/2/05; Crawford: Otter Cr., Deloit, TMM, 9/30/13; Dallas: Raccoon R., Des Moines, TMM, 9/1/11; Davis: Soap Cr., Drakesville, CTH, 8/16/04; Decatur: Long Cr., Decatur, CTH, 9/14/95; Des Moines: Skunk R., Burlington, CTH, 9/7/06; Dickinson: Little Sioux R., Lake Park, TMM, 9/29/11; Floyd: Cedar R., Charles City, MWB, 9/9/08; Fremont: Plum Cr., Thurman, KLS, 8/3/05; Grundy: South Beaver Cr., Parkersburg, CTH, 9/10/14; Guthrie: South Raccoon R., Stuart, TMM, 7/25/12; Hardin: Hardin City Woodlands (UV light), ELF, 7/16/05; Humboldt: West Fk. Des Moines R., Humboldt, TMM, 9/9/14; Jackson: Big Mill Cr., Bellevue, CTH, 8/28/07; Johnson: Old Mans Cr., Williamstown, CTH, 10/11/10; Kossuth: Buffalo Cr., Titonka, JML, 8/23/00; Lee: Des Moines R., Keokuk, CTH, 10/1/03; Linn: Wapsipinicon R., Troy Mills, CTH, 9/24/ 03; Louisa: Iowa R., Columbus Junction, CTH, 9/10/08; Mahaska: South Skunk R., Oskaloosa, CTH, 10/8/12; Marion: English Cr., Knoxville, TMM, 9/11/13; Marshall: Iowa R., Marshalltown, TMM, 9/11/14; Mills: West Nishnabotna R., Malvern, TMM, 10/2/13; Muscatine: Pike Run, West Liberty, CTH, 7/19/06; Polk: Des Moines R., Des Moines, TMM, 9/24/13; Pottawattamie: Jordan Cr., Macedonia, TMM, 9/17/13; Poweshiek: Walnut Cr., Belle Plaine, CTH, 9/17/08; Ringgold: Lotts Cr., Lamoni, TMM, 7/18/03; Scott: Wapsipinicon R., DeWitt, CTH, 8/30/12; Story: South Skunk R., Cambridge, TMM, 10/7/14; Van Buren: Des Moines R., Farmington, CTH, 10/10/06; Warren: Middle R., Indianola, TMM, 7/23/12; Wayne: Unnamed trib. to Steel Cr., Humeston, TMM, 6/17/ 14; Webster: Lizard Cr., Clare, TMM, 8/22/11; Winnebago: Pilot Knob Wetland, Forest City, MTF, 7/18/07; Winneshiek: UV light, KJL, 10/ 7/93; Worth: Elk Cr., Kensett, CTH, 8/26/08; Wright: East Branch Iowa R., Belmond, TMM, 7/23/12. Distribution: Eastern USA, extending west to the Great Plains.

Dineutus discolor Aubé. Allamakee : Upper Iowa R., Dorchester, MWB, 10/6/05; Black Hawk: Wapsipinicon R., Dunkerton, CTH, 8/2/06; Buchanan: Wapsipinicon R., Independence, CTH,9/3/13; Johnson: ( Wickham 1911); Linn: Wapsipinicon R., Troy Mills, CTH, 9/24/03. Distribution: Eastern USA, extending west to Minnesota in the north, Iowa, and Texas in the south.

Dineutus hornii Roberts. Cherokee : Cherokee, FJM, 6/10/56. Distribution: Eastern USA, extending west to Minnesota in the north, Kansas and Arizona in the south .

Dineutus nigrior Roberts. Allamakee : Irish Hollow Cr., New Albin, DPH, 8/22/05; Bremer: Quarter Section Run, Waverly, CTH, 8/9/04; Floyd: Cedar R., Carrville, CTH, 9/4/13. Distribution: Eastern USA, extending west to North Dakota in the north, Iowa, and Louisiana in the south. New state record .

Gyrinus aeneolus LeConte. Appanoose : Packard Cr., Exline, CTH, 9/15/15; Benton: Bear Cr., Shellsburg, CTH, 10/2/13; Black Hawk: Indian Cr., Gilbertville, CTH, 6/28/06; Boone:

Montgomery Cr., Gilbert, TMM, 8/9/13; Buchanan: Pine Cr., Quaqeton, CTH, 9/1/15; Clarke: South Whitebreast Cr., Weldon, CTH, 9/28/95; Clayton: Unnamed trib. to Turkey R., Elgin, CTH, 9/24/14; Dubuque: Lytle Cr., Zwingle, CTH, 7/31/07; Fayette: Volga R., Randalia, CTH, 8/31/10; Jackson: Bear Cr., Baldwin, CTH, 8/ 31/11; Keokuk: Twin Grove Cr., Ollie, CTH, 6/2/ 15; Scott: Lost Cr., Princeton, CTH, 8/30/04; Winneshiek: Canoe Cr., Canoe Creek SWMA, CTH, 8/18/15. Distribution: Eastern USA, extending west to the Great Plains. Its habitat preference is both lentic and lotic environments. New state record.

Gyrinus affinis Aubé. Cedar : ( Wickham 1911); Johnson: ( Wickham 1911). Distribution: Northern transcontinental in the USA, with Iowa forming part of the southern border in the Midwest.

Gyrinus analis Say. Allamakee : Irish Hollow Cr., New Albin, DPH, 8/22/05; Black Hawk: West Fk. Cedar R., Finchford, MWB, 9/15/08; Butler: Shell Rock R., Shell Rock, CTH, 8/6/12; Clayton: Turkey R., Garber, CTH, 10/7/14; Clinton: Brophy Cr., McCausland, CTH, 10/7/ 04; Henry: Big Cedar Cr., Oakland Mills, MWB, 9/12/08; Johnson: Pechman Cr., Hills, CTH, 4/ 17/17; Kossuth: Winnebago R., Lake Mills, TMM, 7/30/12; Lee: Des Moines R., Keokuk, CTH, 10/1/03; Linn: Cedar R., Palo, CTH, 10/7/ 11; Louisa: Iowa R., Columbus Junction, CTH, 9/10/08; Mitchell: Burr Oak Cr., Osage, CTH, 8/3/11; Scott: Wapsipinicon R., DeWitt, CTH, 8/ 30/12; Story: South Skunk R., Cambridge, TMM, 10/7/14; Van Buren: Des Moines R., Keosauqua, CTH, 10/9/12; Wapello: Des Moines R., Ottumwa, CTH, 10/8/12; Winnebago: Winnebago R., Lake Mills, JML, 7/22/03. Distribution: eastern USA, extending to the Great Plains and south to the Gulf Coast. Its habitat preference is slow moving portions of rivers and backwaters areas.

Gyrinus bifarius Fall. Allamakee : Irish Hollow Cr., New Albin, DPH, 8/22/05; Mahaska: Buck Cr., Barnes City, KLS, 9/18/07; Winnebago: Beaver Cr., Lake Mills, CTH, 7/22/03. Distribution: Widely distributed and transcontinental in the USA. Its habitat preference is lentic and lotic environments. New state record.

Gyrinus dichrous LeConte. Johnson : ( Wickham 1911). Distribution: Northeastern USA, with Iowa forming the southwestern border.

Gyrinus gibber LeConte. (Oygur and Wolfe 1991) . Distribution: Eastern USA, extending west to the Midwest. Iowa forms part of the western border.

Gyrinus latilimbus Fall. Allamakee : Little Paint Cr., Harpers Ferry, CTH, 8/10/11. Distribution: Northeastern USA, extending west to North Dakota in the north. Iowa forms part of the southwestern border. New state record .

Gyrinus lecontei Fall. Allamakee : Unnamed trib. to Village Cr., Lansing, CTH, 8/26/10; Clayton: Bluebell Cr., Millville, CTH, 5/28/15; Fayette: Unnamed trib. to Volga Lake outlet, Fayette, CTH, 8/4/15; Hamilton: Boone R., Tunnel Mill access, TMM, 10/5/10; Mitchell: Poor Cr., St. Ansgar, CTH, 3/30/15; Winneshiek: Coldwater Cr., Bluffton, CTH, 9/22/04. Distribution: Northeastern USA with Iowa forming part of the southwestern border.

Gyrinus maculiventris LeConte. Black Hawk : Beaver Cr., Cedar Falls, CTH, 10/9/14; Butler: West Fk. Cedar R., Dumont, CTH, 10/11/06; Chickasaw: Wapsipinicon R., Twin Ponds Park, CTH, 10/14/10; Clayton: Volga R., Elkport, CTH, 10/7/14; Fayette: Unnamed trib. to Little Turkey R., St. Lucas, CTH, 8/23/11; Guthrie: Middle Raccoon R., Coon Rapids, TMM, 10/6/11; Hamilton: Boone R., Albright access, TMM, 10/8/10; Jackson: Farmers Cr., Fulton, CTH, 10/20/11; Johnson: ( Wickham 1911); Linn: ( Wickham 1911); Marshall: Iowa R., Marshalltown, TMM, 9/11/14; Mitchell: Cedar R., St. Ansgar, CTH, 7/5/06; Muscatine: ( Wickham 1911); Wapello: Des Moines R., Ottumwa, CTH, 10/7/13; Winneshiek: UV light, ED, 10/6/93. Distribution: Northern transcontinental in the USA with Iowa forming part of the southern border in the Midwest.

Gyrinus marginellus Fall. Allamakee : Upper Iowa R., Hanover, CTH, 5/25/07; Black Hawk: Dry Run Cr., Cedar Falls, CTH, 9/14/10; Buchanan: Bear Cr., Brandon, CTH, 8/3/10; Cerro Gordo: Bailey Cr., Thornton, CTH, 7/23/03; Clayton: Roberts Cr., St. Olaf, CTH, 7/31/00; Fayette: Brush Cr., Wadena, CTH, 9/27/05; Floyd: Cedar R., Floyd, CTH, 9/23/08; Hamilton: East Br. Iowa R., Belmond, TMM, 7/23/12; Jones: Helmer Cr., Prairieburg, CTH, 8/31/05; Mitchell: Cedar R., Floyd, MWB, 9/23/08; Tama: Little Wolf Cr., Gladbrook, CTH, 8/12/04; Winnebago: Little Buffalo Cr., Thompson, DPH, 7/27/04; Winneshiek: Yellow R., Castalia, CTH, 9/15/ 04; Wright: East Branch Iowa R., Belmond, TMM, 7/23/12. Distribution: Eastern USA, extending to the eastern Great Plains, with Iowa forming part of the western border. Its habitat preference is clear rivers with gravel or clay bottoms, particularly along the stream margin. New state record.

Gyrinus minutus (Fabricius) . Black Hawk: ( Wickham 1911); Johnson: ( Wickham 1911); (Ferkinhoff and Gundersen 1983). Distribution: Northern transcontinental in the USA, extending south to Illinois, Iowa, and Kansas in the Midwest.

Gyrinus parcus Say. (Oygur and Wolfe 1991) . Distribution: Eastern USA, extending west to the Great Plains.

Gyrinus pectoralis LeConte. A single specimen is on record at the Illinois Natural History Survey (INHS), but has no collection/location data associated with it, other than it was collected in Iowa (Ed DeWalt, INHS, personal communication). Distribution : Northern transcontinental in the USA, with Iowa forming part of the southern border in the Midwest.

Gyrinus sayi Aubé. Howard : ( Wickham 1911). Distribution: Northern transcontinental in the USA, with Iowa forming the southern border in the Midwest.

Gyrinus ventralis Kirby. Allamakee : Paint Cr., Yellow River State Forest, CTH, 8/13/10; Black Hawk: Dry Run Cr., Cedar Falls, CTH, 8/29/11; Buchanan: Buffalo Cr., Winthrop, CTH, 9/28/ 10; Chickasaw: East Fk. Wapsipinicon R., New Hampton, CTH, 9/20/10; Clayton: Peck Cr., Osterdock, CTH, 9/6/11; Clinton: Silver Cr., DeWitt, CTH, 7/17/12; Delaware: Bear Cr., Dyersville, CTH, 7/27/11; Fayette: Dibble Cr., Clermont, CTH, 9/24/14; Howard: North Branch Turkey R., Lime Springs, CTH, 8/5/15; Jackson: Farmers Cr., Fulton, CTH, 8/14/12; Johnson: ( Wickham 1911); Linn: West Otter Cr., Toddville, CTH, 10/2/13; Mitchell: Burr Oak Cr., Osage, CTH, 7/30/12. Distribution: Northeastern USA, extending west to Missouri in the south, Iowa, and Minnesota in the north.