Photinus ignitus

Fall, 1927

Ignited Firefly

Photinus ignitus is a North American firefly distinguished by its bioluminescent . Males produce characteristic flash patterns to attract females, who respond from perches in vegetation. Research has documented seasonal plasticity in female mate choice , with females becoming less selective as the breeding season progresses. Like other Photinus species, it produces defensive compounds called lucibufagins that protect against .

Pronunciation

How to pronounce Photinus ignitus: //foʊˈtaɪnəs ɪɡˈnaɪtəs//

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Distribution

North America; recorded in Ontario, Canada and the United States.

Behavior

Males fly and emit bioluminescent flash patterns to attract mates; females perch in vegetation and respond to male signals with their own flashes. Female mate choice criteria vary seasonally: early-season females are highly selective regarding male flash patterns, while late-season females become less discriminating as the number of courting males decreases. Males provide (protein-rich ) to females during mating; spermatophore mass decreases with male body size across the mating season.

Similar Taxa

  • Photinus pyralisBoth are common North American Photinus fireflies with similar flash-based courtship; P. ignitus is distinguished by specific flash pattern characteristics and seasonal mate choice documented in research.
  • Photinus carolinusSynchronous flashing firefly with coordinated group displays; P. ignitus exhibits individual male-female flash communication rather than synchronous mass flashing.
  • Photuris spp.Predatory fireflies that mimic Photinus flash patterns to lure and capture males; P. ignitus males are vulnerable to this , which exploits their -specific flash recognition.

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Sources and further reading