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Meniscus midge larvae

Dixidae · Aquatic life

Meniscus midge larvae: Whole animal

Whole animal · Photo: Janek Lass / CC BY 4.0 (Wikimedia Commons)

NativeAquatic insect

Also called Dixid midges, Dixidae, Dixa

How to identify Meniscus midge larvae

  • Slender larvae about 1/8 to 1/4 inch at the very edge of the water surface
  • Rest in a U shape, bent in the middle, on plants or stones at the waterline
  • Move with a quick sideways wriggle along the surface film
  • Short breathing structure with small fringed flaps at the tail

Similar species

Mosquito larvae hang head down from the surface and dive when disturbed. Midge larvae live on the bottom in tubes or mud.

Profile

SeasonSpring through fall.
StartsActive from spring through fall
DepthAt the water surface line
How it spreads or reproducesWinged adults fly
HabitatWet edges of plants, mossy stones and banks at the surface line of ponds, springs and slow streams.

Why it matters in a lake

Harmless filter feeders that do not bite as adults. Often mistaken for mosquito larvae.

Where it is found

  • Idaho: Occasional
  • Oregon: Occasional
  • Wyoming: Occasional

Classification

KingdomAnimalia
PhylumArthropoda
ClassInsecta
OrderDiptera
FamilyDixidae
Scientific nameDixidae

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