Eyed Elater Glowworm vs Termitophilous Rove Beetle

Side-by-side species comparison

Attribute Eyed Elater Glowworm Termitophilous Rove Beetle
Scientific Name Phengodes fusciceps Corotoca melantho
Order Coleoptera Coleoptera
Family Phengodidae Staphylinidae
Size 15-25 mm (females) 5-8 mm (body length without physogastric abdomen)
Habitat Woodlands Woodlands
Diet Omnivores Omnivores
Regions Eastern United States Brazil, tropical South America
Conservation Least Concern Least Concern

Eyed Elater Glowworm

A railroad worm beetle whose larviform females emit light from paired organs along the body. Males are short-lived, winged, and do not glow.

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Did You Know?

Females produce both green light from their body segments and red light from their head, resembling a tiny railroad train at night.

Termitophilous Rove Beetle

A bizarre, physogastric rove beetle that lives inside termite nests in Brazil. The female's abdomen becomes enormously swollen and translucent, resembling a termite queen in miniature.

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Did You Know?

This is one of the only beetles known to give live birth (viviparity); fully formed larvae emerge from the female rather than eggs.