Guardian Nature School Contact Blog Project Noah Facebook Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!
nature school apple icon

Nature School For Teachers - Fall 2020 Launch! visit nature school

Western Banded Glowworm Beetle

Zarhipis integripennis


This is a male Western Banded Glowworm, in the genus Phengodes. Female phengodids are larviform, meaning they retain all the characteristics of the larval state, but have a fully-developed reproductive system, and compound eyes. They glow between the abdominal membranes. Larval and female phengodids feed exclusively on millipedes. The males are not luminescent.


Along Chimney Rock Hiking path in Point Reyes, CA.

1 Species ID Suggestions

Glowworm Beetle
Phengodes sp. Genus Phengodes - Glowworms - BugGuide.Net

Sign in to suggest organism ID


misako 8 years ago

Thank you harsuame!

misako 8 years ago

Thank for the ID suggestion Latimeria--it is actually a Western Banded Glowworm Beetle, Zarhipis integripennis.

harsuame 8 years ago

Grandioso !!!

Latimeria 8 years ago

I think we can be confident of the superfamily Elateroidea. It looks similar to a soldier beetle (Family Cantharidae), but the antennae are all wrong. Judging from the shortness of the elytra and the branched antennae, I think we can safely say the family Phengodidae. I'm not 100% sure of the genus, but that's the closest I could find.

misako 8 years ago

ThankscJake Barnes!

Jake Barnes
Jake Barnes 8 years ago

Very cool

misako 8 years ago

Thanks for the suggestion Argybee. I'll start looking at photos and see if I can find the species.

Mark Ridgway
Mark Ridgway 8 years ago

blister beetle? lycidae?

Spotted by

Mill Valley, California, USA

Spotted on Apr 14, 2012
Submitted on Apr 15, 2012

Related Spottings

Glowworm beetle

Nearby Spottings

Pussy-Ears Star Tulip Rose-breasted Grosbeak Pussy Ears White-Crowned Sparrow
Noah Guardians
Noah Sponsors