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Nepidae is a family of exclusively aquatic Heteropteran insects in the order Hemiptera. [1] They are commonly called water scorpions for their superficial resemblance to scorpions, due to their raptorial forelegs and the presence of a long slender process at the posterior end of the abdomen, resembling a tail. [2]
Ranatra is a genus of slender predatory insects of the family Nepidae, known as water scorpions or water stick-insects. [1] There are more than 140 Ranatra species found in freshwater habitats around the world, both in warm and temperate regions, with the highest diversity in South America (almost 50 species) and Asia (about 30 species, reviewed in 1972 [2]).
A water scorpion (Nepa cinerea) climbing on leaves of European waterclove (Marsilea quadrifolia) before flying awayIt lives in ponds, small rivers, and stagnant water, and feeds upon aquatic animals, especially insects.
Ranatra fusca is a water stick-insect in the family Nepidae, native to North America. It is known by the common name brown water scorpion. [1] [2] It is generally 3.2–4.2 cm (1.3–1.7 in) long. [3] They are carnivorous and feed on other insects and crustaceans. They are most common from spring to autumn.
Nepa is a genus belonging to the family Nepidae, known as water scorpions.Species are found in freshwater habitats in the Northern Hemisphere. [2] [3] [4]They are oval-bodied, aquatic insects with raptorial front legs.
Laccotrephes tristis is a species of water scorpion also commonly known as a toe-biter, that occurs Australia-wide and is part of the family Nepidae. [2] [3] They are an aquatic predatory insect that breath air. [2] Australian water scorpions inhabit shallow stagnant water, part of freshwater creeks, waterholes and gorges. [2] [4]
Scorpions are resistant to ionizing radiation, surviving nuclear tests in Algeria [73] and Nevada. [74] Desert scorpions have several adaptations for water conservation. They excrete insoluble compounds such as xanthine, guanine, and uric acid, not requiring water for their removal from the body. Guanine is the main component and maximizes the ...
Nepa anophthalma is a species of troglofaunal insect in the Nepidae family (water scorpions), and in the genus Nepa. It holds the distinction of being the only known cave-adapted water scorpion so far discovered.