| Barretthydrus geminatus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Dytiscidae |
| Genus: | Barretthydrus |
| Species: | B. geminatus |
| Binomial name | |
| Barretthydrus geminatus Lea, 1927 | |
Barretthydrus geminatus is a species of diving beetle in the family, Dytiscidae, first described in 1927 by Arthur Mills Lea. [1] [2]
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.
Gonipterus is a genus of weevils in the family Curculionidae. There are approximately 20 described species in the genus, most of which are native to Australia. They are all plant feeders and many are specific to a single host species. Gonipterus platensis, Gonipterus pulverulentus, and an undescribed species infest a number of species of Eucalyptus and have spread to other parts of the world where these trees have been planted.
Limbodessus is a genus of beetles in the family Dytiscidae, first described by Félix Guignot in 1939. It 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.
Australphilus is a genus of beetles in the family Dytiscidae, first described in 1978 by Chris Watts, containing the following species:
Madaglymbus apicalis is a species of diving beetle. It is part of the genus Madaglymbus in the subfamily Copelatinae of the family Dytiscidae. It was described by Fairmaire in 1898. Madaglymbus apicalis is distributed along the coastlines of much of Africa.
Copelatus haemorrhoidalis is a species of diving beetle. It is part of the genus Copelatus in the subfamily Copelatinae of the family Dytiscidae. It was described by Régimbart in 1883.
Copelatus ilybioides is a species of predaceous diving beetle in the family Dytiscidae. It is found in Africa.
Copelatus nigropennis is a species of diving beetle. It is part of the genus Copelatus in the subfamily Copelatinae of the family Dytiscidae. It was described by Zimmermann in 1927.
Copelatus portior is a species of diving beetle. It is part of the genus Copelatus in the subfamily Copelatinae of the family Dytiscidae. It was described by Félix Guignot in 1956.
Copelatus striaticollis is a species of diving beetle. It is part of the subfamily Copelatinae in the family Dytiscidae. It was described by Hippolyte Lucas in 1857.
Madaglymbus unguicularis is a species of diving beetle. It is part of the subfamily Copelatinae of the family Dytiscidae. It was described by Régimbart in 1903.
Agabus africanus is a species of predatory diving beetle belonging to the family Dytiscidae. It is endemic to Tunisia, where it is found in the area of the Cap Bon peninsula. It is not common.
Colymbetini is a tribe of predaceous diving beetles in the family Dytiscidae. There are about 11 genera and more than 160 described species in Colymbetini.
Cybistrini is a tribe of predaceous diving beetles in the family Dytiscidae. There are 12 genera and 130 described extant species in Cybistrini. The same set is also called Cybistrinae by authors viewing it as a subfamily of Dytiscidae.
Conotrachelus geminatus is a species of true weevil in the beetle family Curculionidae. It is found in North America.
Byrrhus geminatus is a species of pill beetle in the family Byrrhidae. It is found in North America.
Bothrideres geminatus is a species of dry bark beetle in the family Bothrideridae. It is found in North America.
Laccophilus sharpi, is a species of predaceous diving beetle found in Asia, Africa and Australian region.
Barretthydrus tibialis is a species of freshwater diving beetle in the family, Dytiscidae, first described in 1927 by Arthur Mills Lea.
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