Hydrochara

Berthold, 1827

water scavenger beetles

Hydrochara is a of () containing 23 distributed across North America, Europe, Asia, and Africa. The genus was revised taxonomically in 1980, with 21 species recognized at that time and multiple synonymies established. Species in this genus are aquatic and have been studied for their potential role in of mosquito . At least one species, Hydrochara rickseckeri, is to California.

Hydrochara occulta by (c) Matthew Pintar, some rights reserved (CC BY), uploaded by Matthew Pintar. Used under a CC-BY license.

Hydrochara spangleri by (c) Arturo Santos, some rights reserved (CC BY), uploaded by Arturo Santos. Used under a CC-BY license.

Hydrochara spangleri by (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick. Used under a CC-BY license.

Pronunciation

How to pronounce Hydrochara: //haɪˈdrɒkərə//

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Identification

Members of Hydrochara can be distinguished from similar by characters established in the 1980 revision, including specific diagnostic morphological features. A to was provided in that revision. The genus is placed in the tribe Hydrophilini within the Hydrophilinae.

Images

Habitat

Aquatic environments, particularly those with emergent macrophytes, which have been identified as the main determinant of suitability for at least one (H. affinis).

Distribution

North America, Europe, Asia, and Africa. Specific distribution records include Denmark, Norway, Sweden, the United States (including Vermont), and South Korea.

Ecological Role

of mosquito ; at least one (H. affinis) has been identified as a natural and effective agent for biological mosquito control with high rates of mosquito larvae .

Human Relevance

Investigated as a potential agent for mosquito . Laboratory rearing programs have been established to maintain populations for field application.

More Details

Taxonomic history

The was revised in 1980 (Memoirs of the Entomological Society of Canada), with six new described, multiple synonymies established, and and designations made for several species. Hydrochara grandis was listed as species dubia.

Genetic and morphological variation

Studies of H. affinis in South Korea found high genetic diversity and morphological variation in both natural and laboratory-reared populations, indicating favorable status and adaptive capacity for applications.