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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 brevipes is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
Hydrovatus pustulatus is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
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.
Hydrovatus ischyrus, is a species of predaceous diving beetle found in Sri Lanka.
Hydrovatus picipennis, is a species of predaceous diving beetle found in India, Sri Lanka, Indonesia, Philippines, China and Thailand.
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.
Hydrovatus renardi, is a species of predaceous diving beetle widespread in India, Bangladesh, Bhutan, Myanmar, Nepal, Pakistan, and Sri Lanka.
Laccophilus parvulus, is a species of predaceous diving beetle found in South and South East Asia.
References
- ↑ Ghosh, Sujit Kr.; Nilsson, Anders N. (2012). "Catalogue of the diving beetles of India and adjacent countries (Coleoptera: Dytiscidae)" (PDF). Skörvnöpparn: 1–77.
- ↑ "Hydrovatus obtusus Motschulsky, 1855". www.gbif.org. Retrieved 2021-08-10.
- ↑ Jaiswal, Deepa (2013). "Aquatic Insects of Lakes in and around Hyderabad (Hempitera Coleoptera)" (PDF). Records of the Zoological Survey of India Occasional Papers (PDF). pp. 1–51. ISBN 978-81-8171-346-9.
- ↑ G., Senthil Kumar; lP, Kalaimaga; J, Issaque Madani (25 July 2020). "Hydrovatus Motschulsky with Description of a New Species (Coleoptera: Dytiscidae: Hydroporinae) from Southern India". International Journal of Zoological Investigations. 6 (2): 338–342. doi: 10.33745/ijzi.2020.v06i02.013 . S2CID 234614496.
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