Micronecta

Kirkaldy, 1897

pygmy waterboatman

Species Guides

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Micronecta is a of small aquatic true bugs commonly known as pygmy waterboatmen. The genus was erected by George Willis Kirkaldy in 1897 and is now classified in the Micronectidae, having been moved from Corixidae. occur across Europe, Africa, Asia, and Australia. Some species, notably Micronecta grisea, have been studied for their potential as agents against mosquito larvae.

Micronecta by no rights reserved, uploaded by Kosuke Onoda. Used under a CC0 license.Micronecta by no rights reserved, uploaded by Kosuke Onoda. Used under a CC0 license.

Pronunciation

How to pronounce Micronecta: //ˌmaɪkroʊˈnɛktə//

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Images

Habitat

Freshwater aquatic environments including ponds, streams, and other lentic or lotic water bodies. have been recorded from rural ponds in India and from collections in Thailand, indicating preference for standing or slow-moving freshwater.

Distribution

Europe, Africa, Asia, and Australia. Specific records include India (Micronecta striata), Thailand (Micronecta grisea), and expanding eastward records in Russia including the Middle Urals (Micronecta griseola). GBIF distribution records include Denmark, Norway, and Sweden.

Host Associations

  • Aedes aegypti - Micronecta grisea preys upon third instar larvae; studied for potential

Life Cycle

Five nymphal instars (N1-N5) followed by stage, based on body length measurements of Micronecta grisea: N1 (0.54-0.65 mm), N2 (0.69-0.84 mm), N3 (0.9-1.11 mm), N4 (1.29-1.56 mm), N5 (1.74-1.98 mm), adults (2.07-2.43 mm).

Behavior

Prey searching and handling times decrease with increasing body size, consistent with Type II functional -prey response. Fifth instar nymphs take more time feeding on prey compared to .

Ecological Role

of mosquito larvae; studied as potential agent for Aedes aegypti .

Human Relevance

Investigated as alternative to Temephos for mosquito management. Temephos is toxic to Micronecta grisea, creating conflict between chemical and biological control methods.

Sources and further reading