This is a list of 122 species in Hydrometra , a genus of water measurers in the family Hydrometridae. [1] [2] [3] [4]
Data sources: i = ITIS, [1] c = Catalogue of Life, [2] g = GBIF, [3] b = Bugguide.net [4]
Corixidae is a family of aquatic insects in the order Hemiptera. They are found worldwide in virtually any freshwater habitat and a few species live in saline water. There are about 500 known species worldwide, in 33 genera, including the genus Sigara.
Ranatra is a genus of slender predatory insects of the family Nepidae, known as water scorpions or water stick-insects. There are around 100 Ranatra species found in freshwater habitats around the world, both in warm and temperate regions, with the highest diversity in South America and Asia. Fewer are found elsewhere, but include several African, some in North America, three from Australia and three from the Palearctic, notably the relatively well-known European R. linearis.
Sigara is a genus of water boatmen in the family Corixidae. Some species within this genus are halophiles; for example, occurrences of the genus have been noted in the hypersaline Makgadikgadi Pans in Botswana.
Gerris is a bug genus in the family Gerridae.
Aquarius is a genus of water striders found predominantly in the northern hemisphere. Formerly a subgenus, Aquarius was elevated to generic rank in 1990 on the basis of phylogenetic analysis. These are among the world's largest water striders, with females averaging 12–17 mm (0.47–0.67 in) long and males roughly 10–30% smaller, depending on the exact species. An outlier is A. elongatus where both sexes typically are about 24 mm (0.94 in), roughly the same as certain Cylindrostethus, and second only to Gigantometra gigas.
Buenoa is a genus of backswimmer. It was created by George Willis Kirkaldy in 1904 to include all species of Anisops from the Western Hemisphere with a two-segmented front tarsus in males, reserving the latter genus for Eastern Hemisphere species with a one-segmented front tarsus in males. It contains 69 described species.
Mesovelia is a genus of water treaders in the family Mesoveliidae. There are more than 30 described species in Mesovelia.
Corixini is a tribe of water boatmen in the family Corixidae. There are about 9 genera and at least 30 described species in the genus Corixini.
Rheumatobates is a genus of water striders in the family Gerridae. There are more than 30 described species in Rheumatobates.
Hallodapini is a tribe of plant bugs in the family Miridae. There are more than 50 genera in Hallodapini.
Hydrometra martini is a species of water measurer in the family Hydrometridae. It is found in North America.
Limnogonus is a genus of water striders in the family Gerridae. There are 28 described species in Limnogonus.
Ochterus is a genus of velvety shore bugs in the family Ochteridae. There are more than 70 described species in Ochterus.