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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.
Hydrovatus confertus, is a species of predaceous diving beetle found in India, China, Thailand, Laos, Vietnam, Malaysia, Indonesia, Sri Lanka, Myanmar, Celebes, Cambodia, Hawaii, Bangladesh, Pakistan, and Nepal.
Hydrovatus castaneus, is a species of predaceous diving beetle found in India, Myanmar, Indonesia, Sri Lanka, Bangladesh, and China.
Hydrovatus bonvouloiri, is a species of predaceous diving beetle found in India, Sri Lanka, Malayasia, Myanmar, China, Japan, Vietnam, Formosa, Indonesia, Thailand, Laos, Taiwan, and Philippines.
Hydrovatus acuminatus, is a species of predaceous diving beetle found in Oriental and African regions.
Hydroglyphus flammulatus, is a species of predaceous diving beetle found in India, Sri Lanka, Pakistan, Thailand, Cambodia, China, Taiwan, Korea, Myanmar, Bangladesh, Indonesia, Vietnam, and Nepal.
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 inefficiens, is a species of predaceous diving beetle found in India, Bangladesh, Bhutan, Myanmar, Nepal, Pakistan, Sri Lanka, China, Hong Kong, Japan, Taiwan, Vietnam, Laos, Thailand, Indonesia, Iran and Malaysia.
Laccophilus sharpi, is a species of predaceous diving beetle found in Asia, Africa and Australian region.
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.
Hydrovatus ischyrus, is a species of predaceous diving beetle found in Sri Lanka.
Hydrovatus obtusus, is a species of predaceous diving beetle found in Sri Lanka, Indonesia, Laos, Malaysia, Thailand, Vietnam and possibly in India, Myanmar and China.
Hydrovatus rufoniger, is a species of predaceous diving beetle found in India, Bangladesh, Myanmar, Sri Lanka, China, Sumatra, Malaysia, Singapore, Thailand, Vietnam and Australian region.
Hydrovatus seminarius, is a species of predaceous diving beetle found in India, Bangladesh, Bhutan, Myanmar, Nepal, Pakistan, Sri Lanka, China, Indonesia, Japan, Laos, Malaysia, Taiwan, Thailand, Vietnam and Australian region.
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 subtilis, is a species of predaceous diving beetle found in India, Andaman & Nicobar Islands, Sri Lanka, Indonesia, Japan, Laos, Malaysia, and Thailand.
Hydrovatus lyratus, is a species of predaceous diving beetle widespread in South Asia, South East Asia and Australian region.
Laccophilus parvulus, is a species of predaceous diving beetle found in South and South East Asia.
References
- ↑ Ghosh SK, Nilsson AN (2012). "Catalogue of the diving beetles of India and adjacent countries (Coleoptera: Dytiscidae)" (PDF). Skörvnöpparn. Umeå. 3 (Supplement): 1–77.
- ↑ Vazirani TG (March 1970). "Contributions to the study of aquatic beetles (Coleoptera) V. A review of Hydroporinae : Dytiscidae in part, from India". Oriental Insects. 4 (1): 93–129. doi:10.1080/00305316.1970.10433945.
- ↑ "Hydrovatus picipennis Motschulsky, 1859". The Integrated Taxonomic Information System. Retrieved 2021-08-10– via Global Biodiversity Information Facility (GBIF).
- ↑ Jäch MA, Li J, Zhang X, Gao M (September 2012). "A remarkable collection of aquatic and riparian beetles from Xiachayu, Zayü County, southeastern Tibet (Coleoptera: Gyrinidae, Noteridae, Dytiscidae, Spercheidae, Hydrophilidae, Heteroceridae, Limnichidae)" (PDF). Koleopterologische Rundschau. Wien. 82: 65–9. Retrieved 2021-08-07.
- ↑ Biström O, Bergsten J (2016-11-16). "Two new species of the megadiverse lentic diving-beetle genus Hydrovatus (Coleoptera, Dytiscidae) described from NE Thailand". ZooKeys (632): 57–66. doi: 10.3897/zookeys.632.10483 . PMC 5126545 . PMID 27920604.
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