| Graphoderus austriacus | |
|---|---|
 | |
| Graphoderus austriacus. Museum specimen | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Dytiscidae |
| Genus: | Graphoderus |
| Species: | G. austriacus |
| Binomial name | |
| Graphoderus austriacus (Sturm, 1834) | |
Graphoderus austriacus is a species of beetle in family Dytiscidae. [1]
Graphoderus austriacus can reach a length of about 13.5 millimetres (0.53 in). [2] Body is broadly oval. There is a small transverse fascia on the pronotum. [3]
This species is present in Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, the Czech Republic, mainland Denmark, mainland France, Germany, Hungary, Italy, Kaliningrad, Latvia, Moldova, Poland, Russia (Central, East and South), Slovakia, Slovenia, Sweden, Switzerland, Ukraine, and Yugoslavia. [4]
The Dytiscidae – based on the Greek dytikos (δυτικός), "able to dive" – are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species live among leaf litter. The adults of most are between 1 and 2.5 cm (0.4–1.0 in) long, though much variation is seen between species. The European Dytiscus latissimus and Brazilian Megadytes ducalis are the largest, reaching up to 4.5 cm (1.8 in) and 4.75 cm (1.9 in) respectively. In contrast, the smallest is likely the Australian Limbodessus atypicali of subterranean waters, which only is about 0.9 mm (0.035 in) long. Most are dark brown, blackish, or dark olive in color with golden highlights in some subfamilies. The larvae are commonly known as water tigers due to their voracious appetite. They have short, but sharp mandibles and immediately upon biting, they deliver digestive enzymes into prey to suck their liquefied remains. The family includes more than 4,000 described species in numerous genera.
Dytiscus latissimus is a large species of aquatic beetle in family Dytiscidae. It is native to Europe and considered threatened.
Graphoderus is a genus of beetle in family Dytiscidae native to the Holarctic.
Agabus is a large genus of predatory aquatic beetles in the family Dytiscidae, proposed in 1817 by William Elford Leach and named after Agabus, an early follower of Christianity. The adult beetles are moderate-sized, 5 to 14 mm long. The genus is primarily Holarctic in distribution, with only a few species known from the Afrotropical and Neotropical realms. Three species of Agabus, namely A. clypealis, A. discicollis and A. hozgargantae are endangered according to the IUCN Red List. The division into subgenera is not widely accepted. However, a number of species groups are recognized after the works of David J. Larson and Anders N. Nilsson. The genus is probably polyphyletic or paraphyletic. In a recent study of mitochondrial DNA, Agabus was found paraphyletic with respect to several of the species groups of Platambus, a closely related genus in the tribe Agabini. Lately the taxonomy of the genus has been revised, and some groups of species were transferred from Agabussensu stricto to other genera in the tribe Agabini.
Thermonectus is a genus of beetle in family Dytiscidae. This genus is native to the New World, and mainly from warm temperate to tropical in distribution, but one species, T. basillaris occurs as far north as southern Ontario, Canada. They inhabit a wide range of freshwater habitats with static water and are often common. They are generally about 0.8–1.5 cm (0.3–0.6 in) long and a few species from desert pools in North America have a distinct yellow-spotted pattern on a black background.
Agabetes is a genus of beetles in the family Dytiscidae, containing the following species:
Agabus aequalis is a species of predatory diving beetle belonging to the family Dytiscidae. This species inhabits rivers and bogs. It has been found in Transbaikal, Primorsky Krai, and Sakhalin in the Russian Far East, Jilin and Sichuan provinces, China, and Arkhangai and Övörkhangai provinces, Mongolia.
Celina slossoni is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
Hydroporini is a tribe of predaceous diving beetles in the family Dytiscidae. There are at least 730 described species in Hydroporini.
Hydroporinae is a subfamily of predaceous diving beetles in the family Dytiscidae. There are at least 2,200 described species in Hydroporinae.
Laccophilus fasciatus is a species of predaceous diving beetle in the family Dytiscidae. It is found in Central America and North America.
Graphoderus liberus is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
Dytiscinae is a subfamily of predaceous diving beetles in the family Dytiscidae. There are at least 20 genera and 380 described species in Dytiscinae.
Rhantus frontalis is a species of predaceous diving beetle in the family Dytiscidae. It is found in Europe and Northern Asia and North America.
Acilius mediatus is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
Eretes sticticus, the western erete, is a species of predaceous diving beetle in the family Dytiscidae. It is found in Africa, the Middle East, and the Americas from the southern United States to Peru. This species preys specifically on mosquito larvae in ponds and pools. They can kill up to all the instar larvae of the mosquito depending on size and density of the prey.
Oreodytes sanmarkii is a species of predaceous diving beetle in the family Dytiscidae. It has a holarctic distribution, found in aquatic habitats in Europe, northern Asia, and North America. It has an affinity toward low-velocity currents and pebbly microhabitat substrates. It was described by Finnish entomologist Carl Reinhold Sahlberg in 1826.
Graphoderus occidentalis is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
Graphoderus perplexus, the predacious diving beetle, is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America and the Palearctic.
Graphoderus fascicollis is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
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