Ammopelmatus muwu

Point Conception Jerusalem Cricket

Family: Stenopelmatidae · Class: Insecta · Order: Orthoptera

Conservation status: G1 S1

The Point Conception Jerusalem Cricket is a large, flightless insect endemic to a very restricted range in southwestern Santa Barbara County, California. Like other Jerusalem crickets, this species possesses a robust, pale yellow to tan body with dark banding across the abdomen. The head is disproportionately large relative to the body, with prominent mandibles adapted for both predatory feeding and processing plant material. Adults typically measure 25 to 50 millimeters (1 to 2 inches) in length, with females generally larger than males. The species lacks wings but has powerful legs adapted for digging and burrowing. Ammopelmatus muwu occurs only in southwestern Santa Barbara County near Point Conception, representing one of the most geographically restricted Jerusalem cricket species in North America (BugGuide). This extremely limited distribution makes the species particularly vulnerable to habitat loss and environmental changes. The species' range appears to be associated with specific soil and vegetation conditions in the coastal region. The Point Conception Jerusalem Cricket inhabits varied terrestrial environments, typically found under rocks, logs, and other surface cover objects. According to BugGuide, the species may be encountered when digging in soil or disturbing ground cover. Like other Jerusalem crickets, A. muwu likely prefers areas with loose, well-drained soils that facilitate burrowing behavior. The species occasionally comes to artificial lights at night, suggesting some degree of nocturnal activity. This species exhibits omnivorous feeding habits characteristic of the genus Ammopelmatus. The diet includes both animal and plant material, with individuals acting as predators on other insects while also consuming roots, decaying vegetation, and organic matter in the soil (BugGuide). In laboratory settings, related species accept supplemental foods such as dog food, indicating dietary flexibility. Jerusalem crickets are generally solitary insects that spend much of their time underground, emerging primarily for feeding and mating activities. The Point Conception Jerusalem Cricket has been assigned a conservation rank of G1 S1, indicating it is critically imperiled both globally and within California due to extreme rarity and restricted range. This ranking reflects the species' vulnerability to extinction from habitat modification, development pressure, or environmental changes within its limited coastal range. The species appears on California Department of Fish and Wildlife's list of rare and local insects. No federal listing status has been assigned as of December 2025, though the species' extremely restricted distribution and specialized habitat requirements make it a conservation concern. The proximity of its habitat to coastal development and potential impacts from climate change, including altered precipitation patterns and temperature regimes, pose ongoing threats to population persistence. Conservation of this species depends on protecting the specific habitat conditions within its narrow range in southwestern Santa Barbara County.

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, and more.