Endangered Species in Santa Cruz County - Invertebrates
Ohlone Tiger Beetle
Scientific Name: Cicindela ohlone
Tiger beetles are day-active insects that prey on small arthropods; because many tiger beetles feed on insect species that are injurious to man and crops, they are regarded as beneficial. Adult tiger beetles are medium-sized and elongated, characterized by brilliant metallic green, blue, red, and yellow coloration highlighted by stripes and spots. Adults are ferocious, swift, and agile predators that seize small prey with powerful sickle-shaped jaws. The two principal characteristics which distinguish the Ohlone tiger beetle from other tiger beetles are its early seasonal activity (from late January to early April) and its disjunct distribution.
Habitat: The Ohlone Tiger Beetle is endemic to Santa Cruz County where it is known only from coastal terraces supporting remnant patches of native grassland, in particular purple needlegrass and California oat grass. The global range of the Ohlone Tiger Beetle is believed to be less than 40 square miles. It is limited to only five populations in the middle of Santa Cruz County; four are seriously threatened by habitat fragmentation, degradation, and destruction due to proposed developments of residential housing, ballfields, parks, parking lots, and an entrance road.
This species is considered to be newly-discovered; specimens were first collected northwest of the City of Santa Cruz, California, in 1987, and were first described in 1993.
Threats: The species' restricted range and small population size increase its vulnerability to naturally occurring events such as erosion, disease, or predation. In addition, habitat sites are threatened by the invasion of non-native vegetation.
To Learn More:
- NatureServe Explorer
Enter species name in the search box to access a detailed description of habitat behavior, food, current conservation status, ecological and distribution data, with citations to relevant management reports.
- Santa Cruz Public Libraries - Local Resources
Searches SCPL's online catalog for local documents and other information on this species.
- U.S. Fish and Wildlife Service
Documents describing protection for this species under the Endangered Species Act. General information about the species as well as plans both to protect it and to help it recover.
- Species Account
Excerpts from U.S. Fish and Wildlife Service documents available at the Central Branch Library
Last updated by teeterj on Oct. 24, 2011
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E — Endangered
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PT — Taxa proposed for listing as threatened
PCH — Critical habitat which has been proposed
C — Candidate species for which the Fish and Wildlife Service has on file sufficient information on the biological vulnerability and threats to support proposals to list as endangered or threatened
D — Delisted due to Recovery