Evaluating firefly extinction risk: Initial red list assessments for North America

Area of Science:

• Entomology
• Conservation Biology
• Ecology

Background:

• Fireflies (family Lampyridae) are recognized for their bioluminescent signaling.
• Anecdotal evidence suggests declining firefly populations across North America.
• No prior systematic studies have comprehensively documented North American firefly distribution, habitat, or threats.

Purpose of the Study:

• To conduct baseline extinction risk assessments for North American fireflies.
• To evaluate threats including habitat loss, light pollution, and climate change.
• To inform conservation strategies for firefly species.

Main Methods:

• Applied International Union for Conservation of Nature (IUCN) Red List criteria and categories.
• Assessed 132 firefly species from the United States and Canada (79% of regional species).
• Compiled data on geographic distribution, habitat specificity, and identified threats.

Main Results:

• 18 species (14%) are threatened with extinction (Critically Endangered, Endangered, or Vulnerable).
• Key threats identified include habitat loss, light pollution, and climate change impacts (sea level rise, drought).
• 53% of species were Data Deficient, indicating a need for more research.

Conclusions:

• Significant portion of North American fireflies face extinction risk.
• Urgent conservation actions are needed, prioritizing at-risk species and habitat preservation.
• Further research is critical to address data gaps for threatened species.