black-horned tree cricket
Oecanthus nigricornis
Records for the above map are from tblMain, Lisa Rainsong, Carl Strang, and Nancy Collins.
Oecanthus forbesi and O. nigricornis are morphologically indistinguishable but can be identified by their calling songs. In the above map, filled circles represent counties where species were identified by song (red for O. forbesi, blue for O. nigricornis, and gold for counties where both species are found). Open circles represent counties where records were based on specimens or literature. These records were assigned to O. forbesi (red open circles) if they occurred west of Ohio and O. nigricornis (blue open circles with cross) if they were east of Ohio. Records in Ohio were unassigned (open grey circles) because both species occur in this region. Records in counties in states aligned with Ohio (Kentucky, Michigan, North Carolina, Virginia, and West Virgnia) were unassigned.
Records for the map of Ohio are from tblMain and Lisa Rainsong.
The shaded area shows the combined distribution of Oecanthus nigricornis and Oecanthus forbesi, two species that thus far are separable only on the basis of the calling songs of the males.
The above map for O. nigricornis and its associated content was created in 2005, based on records from tblMain, by Tom Walker. This map page remained on SINA until May 2024, when the page was updated to its present form. From 2003 to 2005, O. nigricornis had the same map as O. forbesi.
Summary of Species' Distribution
Oecanthus nigricornis is found east of Ohio and in Ohio where it co-exists with Oecanthus forbesi.
List of States and County Records
Map of
United States
Regions
Map of United States Regions
Records from tblMain based on specimens or literature that are in [brackets] are counties where O. nigricornis has been identified by song.
Midwest Region
Ohio:
Records (tblMain) identified by song
Franklin, Shelby, Vinton.
O. forbesi is also found in Franklin and Shelby counties.
Records from Lisa Rainsong, identified by song
Cuyahoga, Erie, Geauga, Lake, Noble, Portage, Richland, Stark, Summit.
O. forbesi is also found in all of these counties except Noble.
Southeast Region
Virginia:
Records (tblMain) based on literature or specimens
Fairfax, Highland, Loudoun.
West Virginia:
Records (tblMain) identified by song
Wetzel.
Records (tblMain) based on literature or specimens
Tucker.
Northeast Region
Connecticut:
Records (tblMain) based on literature or specimens
Hartford, New London.
Delaware:
Records (tblMain) identified by song
New Castle.
Maine:
Records (tblMain) based on literature or specimens
Cumberland, Hancock, Lincoln, Somerset, York.
Maryland:
Records (tblMain) based on literature or specimens
Montgomery.
Massachusetts:
Records (tblMain) identified by song
Essex.
Records (tblMain) based on literature or specimens
Franklin, Hampshire, Middlesex, Norfolk, Worcester.
New Hampshire:
Records (tblMain) based on literature or specimens
Cheshire, Grafton.
New Jersey:
Records (tblMain) identified by song
Monmouth.
Records (tblMain) based on literature or specimens
Burlington.
New York:
Records (tblMain) identified by song
Otsego, Queens, Saratoga, Tioga.
Records from Nancy Collins, identified by song
Tompkins.
Records (tblMain) based on literature or specimens
Albany, Cattaraugus, Erie, Greene, Ontario, Orange, Seneca, [Tompkins], Ulster.
Pennsylvania:
Records (tblMain) identified by song
Armstrong, Lehigh, Potter.
Records (tblMain) based on literature or specimens
Cambria, Centre, Lebanon, Northampton, Westmoreland.
One entry in tblMain for Pennsylvania does not provide a county.
Vermont:
Records (tblMain) identified by song
Windsor.
Unnasigned Records (tblMain) Based on Specimens or Literature
Kentucky
Bourbon, Franklin, Harrison, Mason, Robertson, Scott.
Michigan
Alcona, Antrim, Barry, Bay, Benzie, [Berrien], Calhoun, Charlevoix, Cheboygan, Clinton, Crawford, Emmet, Genesee, Gladwin, Grand Travers, Gratiot, Hillsdale, Huron, Ingham, Iosco, Isabella, Jackson, Kalkaska, Kent, Lake, Lapeer, Lenawee, Livingston, Mackinac, Manistee, Midland, Missaukee, Monroe, Montcalm, Montgomery, Montmorency, Muskegon, Oakland, Oscoda, Otsego, Presque Isle, Roscommon, Saginaw, St. Clair, Washtenaw, Wayne, Wexford.
North Carolina
Ashe, Avery, Buncombe, Haywood, Watauga.
Ohio
Allen, Ashtabula, Belmont, Brown, Butler, Carroll, Champaign, Clermont, Darke, Delaware, [Erie], Fairfield, Fulton, Gallia, [Geauga], Guernsey, Hamilton, Hardin, Hocking, Huron, Jackson, [Lake], Licking, Logan, [Lorain], Lucas, Madison, Marion, Mercer, Miami, Montgomery, Morrow, Muskingum, Ottawa, Pickaway, [Portage], Preble, [Richland], Ross, [Stark], [Summit], Tuscarawas, Warren, Washington, Wayne, Williams, Wood, Wyandot.
Tennessee
Carter.
West Virginia
Nicholas, Ritchie.
Virginia
Giles, Wythe.
Last records update: 28 April 2024 tmy