| Cybister extenuans | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Dytiscidae |
| Genus: | Cybister |
| Species: | C. extenuans |
| Binomial name | |
| Cybister extenuans (Walker, 1858) | |
| Synonyms | |
| |
Cybister extenuans, is a species of predaceous diving beetle found in India and Sri Lanka. [1] [2] [3]
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.
Cybister, is a genus of beetle in family Dytiscidae. They are found in much of the world, including all continents except Antarctica. As of 2021 there are 96 species and 9 additional subspecies among four subgenera in the genus.
Cybistrini is a tribe of predaceous diving beetles in the family Dytiscidae. There are 7 genera and 128 described extant species in Cybistrini. The same set is also called Cybistrinae by authors viewing is as a subfamily of Dytiscidae.
Cybister fimbriolatus, the giant diving beetle, is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America and the Neotropics.
Cybister confusus, is a species of predaceous diving beetle found in India, Bangladesh, Pakistan and Sri Lanka.
Cybister tripunctatus, is a species of predaceous diving beetle found in India, Andaman & Nicobar Islands, Sri Lanka, Afghanistan, Bangladesh, Myanmar, Nepal, Pakistan, Bhutan, China, Cyprus, Iran, Iraq, Japan, Kyrgyzstan, Mongolia, Russia, Syria, Tajikistan, Turkmenistan, Italy, Turkey, Uzbekistan and Europe.
Laccophilus sharpi, is a species of predaceous diving beetle found in Asia, Africa and Australian region.
Clypeodytes bufo, is a species of predaceous diving beetle found in India, Bangladesh, Myanmar, Sri Lanka, China, and Vietnam.
Cybister cardoni, is a species of predaceous diving beetle found in India, Bangladesh, Myanmar, Pakistan, and Sri Lanka.
Cybister dejeanii, is a species of predaceous diving beetle found in India and Sri Lanka.
Cybister javanus, is a species of predaceous diving beetle found in India, Sri Lanka and Indonesia.
Cybister prolixus, is a species of predaceous diving beetle found in Sri Lanka.
Cybister sugillatus, is a species of predaceous diving beetle found in India, Sri Lanka, Afghanistan, Bhutan, Myanmar, Nepal, Pakistan, China, Indonesia, Japan, and Philippines.
Cybister ventralis, is a species of predaceous diving beetle found in India, Bangladesh, Myanmar, Pakistan, Sri Lanka and China.
Hydaticus fractifer, is a species of predaceous diving beetle found in India, Andaman & Nicobar Islands and Sri Lanka.
Hydaticus incertus, is a species of predaceous diving beetle found in India, Bhutan, Myanmar, Nepal, Sri Lanka, China, Malaysia, and Thailand.
Hydroglyphus inconstans, is a species of predaceous diving beetle found in India, Bangladesh, Bhutan, Myanmar, Nepal, Sri Lanka, China, Indonesia, Japan, Malaysia, and Taiwan. It is an alkaliphilous beetle species.
Hydrovatus sinister, is a species of predaceous diving beetle found in India, Myanmar, Sri Lanka, Sumatra, Thailand, Laos, Singapore and Malaysia.
Hydrovatus subrotundatus, is a species of predaceous diving beetle found in India, Bangladesh, Myanmar, Nepal, Sri Lanka, China, Indonesia, Laos, Philippines, Singapore, Thailand, Vietnam and Australian region.
Hydrovatus renardi, is a species of predaceous diving beetle widespread in India, Bangladesh, Bhutan, Myanmar, Nepal, Pakistan, and Sri Lanka.
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