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Desert Cockroaches

Arenivaga spp.[4]

Desert cockroaches, also called sand cockroaches, are native roaches of the Southwest that live in sandy soil; winged males often fly to lights at night and may wander into houses, but they don't live or breed indoors and are not pests.[1][2]

Group
Insect
Order
Blattodea
Family
Corydiidae
US records
8 states
Sources
4 cited
Updated
2026-10-17
Male desert (sand) cockroach, a pale tan, flat roach with long wings and antennae
Male desert (sand) cockroach, a pale tan, flat roach with long wings and antennae. (c) Jay Pruett, some rights reserved (CC BY) — via iNaturalist, CC BY 4.0
On this page
  1. Identification
  2. Look-alikes
  3. Where it lives
  4. Biology
  5. Damage and signs
  6. Health risk
  7. Control
  8. Related profiles
  9. Common questions
  10. Sources

How to identify it

  • Males are pale tan with a flattened body and long wings and antennae; females look nothing like them, being brown, round and fuzzy, like a thick penny, with no wings and short legs and antennae.[1][2]
  • Young roaches look like small versions of the adult females.[1]

Look-alikes

Look-alikeHow to tell them apart
House-infesting cockroachesA single pale, winged roach that comes in through a door at night in desert areas is likely a desert cockroach male, which won't live indoors, rather than a roach breeding inside.[1]

Where it lives

Native to dry habitats of the Southwest and Mexico; a 2014 revision of the genus described 39 new species, raising the total from 9 to 48.[2][1]

US map: public records from 8 states since 1990 (GBIF).

Biology and life cycle

Females and nymphs live underground in sand, and adults appear in summer.[1][2]

In a laboratory study, adult males lived less than two months after their final molt.[3]

Damage and signs

  • They live entirely outdoors in sandy soil and are not considered pests.[1]

Health risk

They are not pests and are not known to live indoors.[1]

Control

Keep them out

The winged males are drawn to lights at night, so keeping doors and screens closed when lights are on keeps them out; they won't survive or breed indoors.[1]

Common questions

What is the pale, winged cockroach at my porch light?
In the Southwest, a pale tan, flat roach with long wings that flies to lights at night is likely a male desert (sand) cockroach.[1][2]
Will desert cockroaches infest my house?
No; they live outdoors in sandy soil and are not known to live indoors.[1]

Sources

  1. University of New Mexico, Museum of Southwestern Biology, “Desert Sand Cockroach (arthropods gallery).” msb.unm.edu/divisions/arthropods/resources/arthropods%20gallery/desert-sand-cockroach.html (accessed 2026-10-17)
  2. Entomology Today (Entomological Society of America), “39 New Species of Cockroach Discovered in the Southwestern US and Mexico (February 27, 2014).” entomologytoday.org/2014/02/27/39-new-species-of-cockroach-discovered-in-the-southwestern-us-and-mexico/ (accessed 2026-10-17)
  3. Entomological Society of Washington, “Biology of a desert sand cockroach, Arenivaga investigata (Proceedings of the Entomological Society of Washington 85(3): 598-600, 1983; Internet Archive copy).” archive.org/download/biostor-75269/biostor-75269.pdf (accessed 2026-10-17)
  4. iNaturalist, “Arenivaga taxon page (order and family).” www.inaturalist.org/taxa/122620 (accessed 2026-10-06)

Updated 2026-10-17. Built from sourced records. Spot an error? Tell us.