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Gurney's shieldback

Idiostatus gurneyi

distribution map for Idiostatus gurneyi link to map summaries
Dots show county records; shaded area shows likely general distribution.
Computer-generated distribution map, produced in 2003 from records in a database available on this site.

Ron Lyons was reading Rentz's 1973 publication The Shield-backed Katydids of the Genus Idiostatus and noticed there were three county records listed for this species (Siskiyou County, California and Klamath and Jackson Counties, Oregon; page 47) but only two records were on the map (page 43). He checked SINA's distribution map and saw that it too only had two records. He sent me an email in November 2023 to inform me about the missing record. I checked Tom Walker's spreadsheet, tblMain, which lists all species records from 2003 to 2008. The two counties listed for I. gurneyi were Klamath and Siskiyou. I created a new map for I. gurneyi with Jackson County added and updated the records database.
[Teresa Yawn, 17 December 2023]

Below is a map that shows Siskiyou, Klamath, and Jackson Counties and the three locations (red, blue, and green dots) within each county that are listed for I. gurneyi in Rentz 1973.

distribution map for Idiostatus gurneyi

1) California, Siskiyou County: Condrey Peak, 10 September 1968 (G. M. Buxton, A. B. Gurney).

2) Oregon, Jackson County, Mt. Ashland: Alpine meadow, 2 September 1964, K. Goeden, alpine meadow; 6,500-7,100 feet elevation, 26 July 1966, P. Opler, J. Powell; picnic area, 1 mile West Ski Bowl, 6,500 ft. elev., 6 September 1968, D. C. & K. A. Rentz; summit 7,500 feet elevation, 1 September 1968, L. G. Gentner, K. Goeden, A. Gurney; and 5 miles below the summit, 1 September 1968, G. Gentner, K. Goeden, A. Gurney.

3) Oregon, Klamath County: Crater Lake, 14 September 1923 (L. P. Rockwood). Scott, 26 August 1928 (J. Rehn, M. Hebard).

Summary of Species' Distribution

Idiostatus gurneyi is found in the West Region of the United States and is known from three counties, two in Oregon and one in California, on the shared border of these two states.

List of States and County Records

Map of
United States
Regions Map of United States Regions

map of geographic regions and provinces

West Region

California: 1 county record.
Siskiyou.

Oregon: 2 county records.
Jackson, Klamath.

Last update: 17 December 2023