Dark male #1, Siskiyou County, California.
Photograph by Ron Lyons, used by permission.
In email of 12 Dec 2010, Ron Lyons sent these details of the circumstances of his photographing living I. rehni:
Rehn's Shieldback
All of these pictures came from the A12 road in Siskiyou near the A97 Highway. The A12 road is just south of Military Pass and Highway 97, and is about 10 miles north of Weed. It is the same area that Rentz indicated also contained Idiostatus inermis. While I did find an inermis female a few miles away at Montague, I only found Idiostatus rehni along the A12 road this year, as far as I could tell, on my visits. I also found one road-killed badly squished C. unodontus female and some unidentified Steiroxys along this section of road.
I also found all green females near the Shasta Valley Wildlife Area and along the section of the Siskyiyou summit road which parallels I-5 on the east side in Oregon. Neither had corresponging males out at the time, so I have not included these.
Male - green (IMG_6181, IMG_6199 and cerci IMG_6189) 2010 July 27
USA: CA: Siskiyou: A12 road: 0.4 miles west of Highway 97 The first night (2010 July 27) there was also a late instar green male out on the road as well as the mature green male.
Male - brown/grey (IMG_6708 and cerci IMG_6711) on dirt at side of road 2010 August 19
USA: CA: Siskiyou: A12 road: 0.1-0.2 miles west of Highway 97
Male - brown/grey (IMG_6724) different male - this one was on the road 2010 August 19
USA: CA: Siskiyou: A12 road: 0.1-0.2 miles west of Highway 97
Female - green (IMG_6249 and IMG_6250) 2010 August 05
USA: CA: Siskiyou: A12 road: 0-1 mile west of Highway 97 The green female was on the road late and was the only live katydid I found there that evening when I came through. It does however, except for the fact that it is green, look much like the brown female below.
Female - brown (IMG_6703 and IMG_6705) 2010 August 19
USA: CA: Siskiyou: A12 road: 0.1-0.2 mile west of Highway 97 When this brown female was out, there were a number of rehni and some Steiroxys in the same area, including the two brown males indicated above.
