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Crane fly larvae

Tipulidae · Aquatic life

Crane fly larvae: Whole animal

Whole animal · Photo: Uwe Schneehagen / CC BY-SA

NativeAquatic insect

Also called Leatherjackets, Crane flies, Tipulids, Mosquito hawks (adults)

How to identify Crane fly larvae

  • Plump, soft, grayish brown to translucent larvae from about 1/2 to 2 inches
  • No legs; head pulled inside the body so the front end looks blunt
  • Rear end has a ring of short, fleshy lobes around two dark breathing spots
  • Tough, leathery skin; some can puff up the front end
  • Adults look like giant mosquitoes with very long legs but do not bite

Similar species

Horse fly larvae are pointed at both ends with raised rings around each segment. Rat tailed maggots have a long breathing tail.

Profile

SeasonLarvae present all year; adults most common in spring and fall.
StartsActive through cool months; adults emerge in spring
DepthShoreline mud, leaf packs and stream bottoms
How it spreads or reproducesWinged adults fly
HabitatWet mud and leaf litter along shorelines, springs, seeps and marsh edges; under rocks and in debris in streams and canals.

Why it matters in a lake

Harmless recyclers of dead leaves and good food for trout. Adults are often blamed as mosquitoes but cannot bite.

Where it is found

  • Idaho: Common
  • Oregon: Common
  • Wyoming: Common

Classification

KingdomAnimalia
PhylumArthropoda
ClassInsecta
OrderDiptera
FamilyTipulidae
Scientific nameTipulidae

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Idaho / Wyoming (208) 501-4531Oregon (541) 280-0596