Male Western Banded Glowworm Beetle

Subject: What the heck?
Location: Nevada County, CA.
June 19, 2016 11:31 am
Found in Nevada County CA. Can you tell me what this freakish thing is?
Signature: Carol Macarty

Male Glowworm
Male Western Banded Glowworm

Dear Carol,
This is an adult male Glowworm Beetle probably the Western Banded Glowworm,
Zarhipis integripennis, which is pictured on BugGuide.  While male Fireflies that flash with bioluminescence as adults signalling to females that respond by flashing back, male Glowworms do not light up and only  larviform female Glowworms glow in the dark to attract a mate.  

2 thoughts on “Male Western Banded Glowworm Beetle”

  1. The female is flightless and it is the only sex that glows. You will find females crawling on debris, rocks etc. in moist environments were the males can be had by Blacklights at nite . Cheers ! Gene St. Denis Sierra Nevada Research


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