San-jacinto-peak
Guides
Arenivaga investigata
desert cockroach
Arenivaga investigata, the desert cockroach, is a species in the family Corydiidae endemic to the Colorado Desert of California. It is notable for its ability to absorb water vapor from unsaturated air above 82.5% relative humidity, a physiological adaptation that allows survival in one of the most arid environments on Earth. The species exhibits extreme sexual dimorphism, with wingless females and fully winged males. It inhabits sand dunes and is primarily found in subsurface microhabitats where temperature and moisture conditions remain favorable.