''Heterotrissocladius'' is a genus of

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

an non-biting midges in the subfamily Orthocladiinae of the bloodworm family (

Chironomidae Chironomidae , commonly known as non-biting midges or chironomids , are a family of Nematoceran flies with a global distribution. They are closely related to the families Ceratopogonidae, Simuliidae, and Thaumaleidae. Although many chironomid ...

). Larvae of species in this genus have been found at the bottom of

Crater Lake Crater Lake ( Klamath: ) is a volcanic crater lake in south-central Oregon in the Western United States. It is the main feature of Crater Lake National Park and is a tourist attraction for its deep blue color and water clarity. T ...

. Eggs are laid on the surface of the water, before sinking to the bottom. There, the larvae feed on the sediment, before swimming to the surface, pupating, and emerging as adults.

References

{{Chironomidae-stub

Further reading

References