Corynoneura

Winnertz, 1846

non-biting midges

Corynoneura is a speciose of small, non- in the . Members occur worldwide except Antarctica, inhabiting both flowing and standing freshwater across various thermal regimes. The genus has been subject to extensive taxonomic revision, with numerous described from the Neotropical region and Oriental China in recent decades. studies support the use of molecular data for species delimitation where alone is insufficient.

Corynoneura by (c) Kathy Richardson, some rights reserved (CC BY), uploaded by Kathy Richardson. Used under a CC-BY license.

Corynoneura by (c) Victor Engel, some rights reserved (CC BY), uploaded by Victor Engel. Used under a CC-BY license.

Pronunciation

How to pronounce Corynoneura: //ˌkɔːrɪnoʊˈnjʊərə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Identification relies heavily on morphological examination of , particularly males, with pupal characteristics also used for delimitation. of the COI gene has proven effective for resolving taxonomic conflicts and revealing cryptic species. to species are available for specific regions including the Neotropics and Oriental China.

Images

Habitat

Freshwater environments including both lotic (flowing) and (standing) waters. occupy various thermal regimes. Some species, such as C. scutellata, have been documented in potable water distribution networks and water-treatment facilities.

Distribution

Worldwide distribution, absent from Antarctica. Documented from the Palearctic (including Scandinavia and Denmark), Neotropical region (Brazil, Chile, Rica, Mexico), and Oriental China. Distribution records extend to Colombia (Cundinamarca).

Life Cycle

with four stages: , , , and . and requirements have been quantified for C. scutellata: developmental threshold of 8.7°C and 172.4 day-degrees per . Some are ; C. scutellata has a theoretical maximum of seven generations per year. Multiple (male, female, pupa, larva) have been described together for several species, facilitating identification across developmental phases.

Ecological Role

are aquatic and likely contribute to and matter processing in freshwater . Specific ecological functions remain poorly documented for most .

Human Relevance

Corynoneura scutellata and related can infest potable water distribution networks and water-treatment works, where they may be managed as nuisance organisms. Developmental rate studies have been conducted to inform management strategies for in water treatment facilities.