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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.
Austrodytes is a genus of beetles in the family Dytiscidae found only in northern Australia. It was first described in 1978 by Chris Watts. The genus contains these two species:
Gibbidessus chipi is a species of beetle in the family Dytiscidae, the only species in the genus Gibbidessus.
Limbodessus is a genus of beetles in the family Dytiscidae, first described by Félix Guignot in 1939. It contains the following species:
Carabhydrus is a genus of beetles in the family Dytiscidae, containing the following species:
Antiporus is a genus of beetles in the family Dytiscidae, first described in 1882 by David Sharp, which contains the following species:
Barretthydrus is a genus of beetles in the family Dytiscidae, first described in 1927 by Arthur Mills Lea. The type species is Barretthydrus geminatus.
Necterosoma is a genus of beetles in the family Dytiscidae, containing the following species:
Nirripirti is a genus of beetles in the family Dytiscidae. However the Australian Faunal Directory considers it a synonym of the genus, Paroster, on the basis of work by Leys and Watts, and Toussaint, Hendrich and others.
Paroster is a genus of beetles in the family Dytiscidae, containing the following species:
Sternopriscus is a genus of beetles in the family Dytiscidae, containing the following species:
Tiporus is a genus of beetles in the family Dytiscidae, containing the following species:
Laccophilinae is a subfamily of ground and water beetles in the family Dytiscidae. There are at least 410 described species in Laccophilinae.
Neobidessodes is a genus of predaceous diving beetles in the family Dytiscidae. There are about 10 described species in Neobidessodes. They are found in Australasia. The genus was first described in 2009, and the type species is N. denticulatus.
Hydrovatus lyratus, is a species of predaceous diving beetle widespread in South Asia, South East Asia and Australian region.
Neobidessodes flavosignatus is a carnivorous subterranean water beetle, in the Bidessini tribe of the Dytiscidae family. It was first described in 1922 by Albrecht Zimmermann as Bidessus flavosignatus. It was assigned to the genus Bidessodes by Watts in 1978, and to the new genus of Neobidessodes in 2009 by Hendrich and others.
Neobidessodes grossus is a carnivorous subterranean water beetle, in the Bidessini tribe of the Dytiscidae family. It was first described in 1922 by Albrecht Zimmermann as Bidessus grossus. It was assigned to the genus Bidessodes by Watts in 1978, and to the new genus of Neobidessodes in 2009 by Hendrich and others.
Neobidessodes bilita is a carnivorous subterranean water beetle, in the Bidessini tribe of the Dytiscidae family. It was first described in 1978 by Chris H.S. Watts as Bidessodes bilita, and reassigned to the genus of Neobidessodes in 2009 by Hendrich and others.
Batrachomatus nannup is a species of diving beetle in the family, Dytiscidae, first described as Allomatus nannup in 1978 by Chris H.S. Watts. The holotype was collected in Bridgetown, Western Australia. In a generic revision in 2013, Lars Hendrich and Michael Balke synonymised AllomatusMouchamps, 1964 with Batrachomatus Clark, 1863, thus changing the species name.
Barretthydrus stepheni is a species of freshwater diving beetle in the family, Dytiscidae, first described in 1978 by Chris H.S.Watts. The species has been found in New South Wales.
References
- ↑ "Genus Australphilus Watts, 1978". Australian Faunal Directory. Australian Government. Retrieved 2024-09-10.
- ↑ CHS Watts (1978). "A revision of the Australian Dytiscidae (Coleoptera)". Australian Journal of Zoology. Supplementary Series. 26 (57): 1-166 [13]. doi:10.1071/AJZS057. ISSN 0310-9089. Wikidata Q54576498.
- ↑ Dytiscidae Species List at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 7 May 2012.
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