Tonopah Desert, Maricopa County, Arizona, USA May 24, 2015 Size: 19mm
These are images of a male Cockroach in the genus Arenivaga. The key indicates a few species in my area that are only reliably separated by dissection of the genitalia.
From the distribution maps, there are about three species reported from central Arizona that look somewhat similar, with Arenivaga tonkawa being the most likely choice.
Contributed by Bob Biagi on 20 December, 2015 - 8:47pm Last updated 8 January, 2016 - 7:02pm
Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.