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Cypress firefly

Photuris walldoxeyi
Pinned adult specimen. (Photo: Luiz Silveira.)
U.S. State
Life History

Activity Period and Flash Signal

Adults are active mid-May to mid-June. This species has a unique courtship flash pattern consisting of four to nine bright pulsing flashes, followed by a prolonged one second glow.


The newly described cypress firefly has thus far been found in Mississippi, Tennessee, Illinois, and Indiana.

Habitat Associations

As its name suggests, the cypress firefly is a habitat specialist associated with cypress swamps.

Conservation Status
  • IUCN Red List status: Vulnerable
  • NatureServe status: G2G3—Imperiled, SNR—State Not Ranked (Illinois, Mississippi, Tennessee), SU—State Unrankable (Indiana)
  • U.S. Endangered Species Act status: Not listed

The main threats to this species are habitat loss and degradation and light pollution.

Conservation Needs
  • We need to know more about the distribution of this species. Please check out the Firefly Atlas to help us track and conserve this threatened firefly.
  • Turn off your outdoor lights at night so the lights of this firefly aren’t diminished by light pollution. You can read more about firefly-friendly lighting in our fact sheet.
  • Avoid pesticide use, which could harm this firefly, its habitat, or its prey.
  • More research on population size and trend, habitats and ecology, and threats is needed for this species.
Prepared By

Candace Fallon, The Xerces Society for Invertebrate Conservation, based on the IUCN Red List assessment