Bug Identifier
Horsehair worm
Community identification

Horsehair worm

Nematomorpha (various species)

Order & Family
Order: Gordioidea; Family: Varies by genus (e.g., Gordiidae)
Size
Typically 5 to 10 centimeters long, though can occasionally reach up to 1 meter in length, and remain very thin.
See this bug in the Encyclopedia

Natural Habitat

Found in aquatic environments, wet soil, or damp areas after emerging from a host.

Diet & Feeding

Adults do not feed; larvae are internal parasites that absorb nutrients from the body fluids of hosts.

Behavior Patterns

Larvae parasitize arthropods like crickets and beetles, often manipulating the host's behavior to seek water; adults are free-living and emerge into water solely to mate and lay eggs.

Risks & Benefits

Harmless to humans, pets, and livestock. They provide ecological benefits by helping to control insect populations.