Dytiscidae


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Dytiscidae

[dī′tis·ə‚dē]
(invertebrate zoology)
The predacious diving beetles, a family of coleopteran insects in the suborder Adephaga.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Dytiscidae

 

(predacious diving beetles), a family of water beetles. The body is elongate-oval and flattened; less frequently it is convex. The beetles range in length from 1.5 to 50 mm. The oar-shaped hind legs are for swimming; the forelegs are prehensile. The elongated larvae have legs fitted for swimming, a large head, and sickle-shaped mandibles. The mandibles have ducts for sucking in prey.

Predacious diving beetles are widely distributed. Of the approximately 2,500 species, more than 270 are found in the USSR. The beetles live in fresh or, less frequently, brackish waters; they breathe air, which is stored under the elytra. At night the beetles often emerge from the water and fly. They pupate in soil near the water. The beetles and larvae are active predators and eat various aquatic invertebrates, including the larvae of mosquitoes. Large species, such as Dystiscus marginalis, even prey on tadpoles and young fish, thus sometimes adversely affecting the fishing industry.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
A nivel mundial, los elmidos destacan por su gran riqueza (1330 especies) solo por debajo de Dytiscidae e Hydrophilidae (Jach & Balke 2008).
A total of 3,390 adults of 40 species in 17 genera of family Dytiscidae were collected and described from the study area.
A description of the first instar larva of Coptotomus interrogatus (Fabricius) (Coleoptera: Dytiscidae: Coptotominae) with an emphasis on cranial morphology and comments on the basal lineages of Dytiscidae.
Deep interstitial habitat as a refuge for Agabus paludosus (fabricius) (Coleoptera: Dytiscidae) during summer droughts.
A redifinition and revision of the Agabus optatus-group (Coleoptera, Dytiscidae); an example of Pacific intercontinental disjunction.
Saha, "Predation of the beetle Rhantus sikkimensis (Coleoptera: Dytiscidae) on the larvae of Chironomus Meigen (Diptera: Chironomidae) of the Darjeeling Himalayas of India," Limnologica, vol.
Dytiscidae. Dark in the darkness of the muddied water.
Las 304 especies del cosmopolita genero Brachinus, son conocidas por su caracter de bombarderos, ya que arrojan sustancias corrosivas como parte de su comportamiento de ataque y de defensa (STRAHS, 1969); Brachinus posee especies hidrofilas y mesofilas que generalmente viven en los bordes de rios y quebradas y en bosques bajos, algunos son parasitoides de escarabajos acuaticos de las familias Gyrinidae, Dytiscidae e Hydrophilidae (LAROCHELLE & LARIVIERE, 2003; MARTINEZ, 2005a; SASKA & HONEK, 2012), se diferencian facilmente de otros Carabidae por la forma de sus mandibulas, cabeza y pronoto estrechos, elitros amplios, truncados apicalmente, dorso pubescente, color marron-oscuro a negro, por lo general con brillo azulado.
Speciation in Iberian diving beetles in Pleistocene refugia (Coleoptera, Dytiscidae).
Paratypes from field station 428-5 from leaf litter together with Dytiscidae, small Corixidae, Copepoda, Tubificidae, numerous Ceratopogonidae, Mysidacea and Macrobrachium (from field notes of E.