Bug Identifier
Horsehair worm
Community identification

Horsehair worm

Gordius robustus

Order & Family
Order: Gordiida; Family: Gordiidae
Size
Extremely thin (about 1 mm diameter) and ranging from 5 to 30 centimeters in length.
See this bug in the Encyclopedia

Natural Habitat

Typically found in damp areas like puddles, cisterns, watering troughs, and swimming pools.

Diet & Feeding

Larvae are internal parasites of insects like crickets or grasshoppers; adults do not feed.

Behavior Patterns

As larvae, they reside inside a host insect; as adults, they emerge near water to mate and lay eggs.

Risks & Benefits

They are harmless to humans, pets, and plants; they benefit the ecosystem by helping control insect populations.