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Mosquito (Coquillettidia)

Taxonomic group

Culicidae: Coquillettidia

Diagnostic features

Like other culicids Coquillettidia mosquito larvae have a wide thorax (the widest part of the body) and a breathing siphon at the end of the abdomen, however in Coquillettidia the siphon is short and pointed (used for extracting oxygen from plant stems).

Typical habitats

Coquillettidia larvae can be found attached to plants around the shallow margins of still or slow flowing waters.


They are likely to use their brush-like mouthparts to collect floating organic matter or to scrape organic slimes from plant surfaces.

Indicator value

  • Hard bottom: unassigned; general mosquito value 3
  • Soft bottom: unassigned; general mosquito value 1.2

The tolerance values (ranging from 0 to 10) give an indication of which are the sensitive taxa (values of 8 or more) and which are the tolerant taxa (values of 3 or less). For more information see: Indicator species

We have little data about the water quality requirements of Coquillettidia. This genus has not been assigned tolerance values, but the family (Culicidae) have values of 3 (hard bottom sites) and 1.2 (soft bottom sites).