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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.
Eretes sticticus, the western erete, is a species of predaceous diving beetle in the family Dytiscidae. It is found in Africa, the Middle East, and the Americas from the southern United States to Peru. This species preys specifically on mosquito larvae in ponds and pools. They can kill up to all the instar larvae of the mosquito depending on size and density of the prey.
Gyrinus sericeolimbatus, is a species of whirligig beetle found in India, Sri Lanka, New Guinea, Philippines, Solomon Islands.
Zaitzeviaria bicolor, is a species of riffle beetle found in Sri Lanka, Philippines and Vietnam.
Hydrovatus castaneus, is a species of predaceous diving beetle found in India, Myanmar, Indonesia, Sri Lanka, Bangladesh, and China.
Hydrovatus acuminatus, is a species of predaceous diving beetle found in Oriental and African regions.
Hydaticus satoi, is a species of predaceous diving beetle found in India, Bhutan, Myanmar, Nepal, Sri Lanka, China, Indonesia, Japan, Philippines, Saudi Arabia, Taiwan and Thailand.
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.
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 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 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.
Laccophilus uniformis, is a species of predaceous diving beetle found in India, Andaman & Nicobar Islands, Bangladesh, Myanmar, Sri Lanka, Cambodia, China, Indonesia, Laos, Thailand, and Vietnam.
Pseuduvarus vitticollis, is a species of predaceous diving beetle found in India, Nepal, Pakistan, Sri Lanka, China, Madagascar, Malaysia, Taiwan and African region.
References
- ↑ "Catalogue of the diving beetles of India and adjacent countries (Coleoptera: Dytiscidae)" (PDF). Skörvnöpparn, Umeå Supplement 3, 2012: 1-77. Retrieved 2021-08-07.
- ↑ "Hydrovatus subrotundatus Motschulsky, 1859". www.gbif.org. Retrieved 2021-08-10.
- ↑ Freitag, Hendrik; Jäch, Manfred A.; Wewalka, Günther (2016-07-02). "Diversity of aquatic and riparian Coleoptera of the Philippines: checklist, state of knowledge, priorities for future research and conservation". Aquatic Insects. pp. 177–213. doi:10.1080/01650424.2016.1210814 . Retrieved 2021-08-10.
- ↑ Shaverdo, Helena; Wewalka, Günther; Šťastný, Jaroslav; Hendrich, Lars; Fery, Hans; Hájek, Jiří (2021-04-03). "New records of diving beetles and corrections updating the catalogue of Palearctic Dytiscidae (Coleoptera)". Aquatic Insects. pp. 179–196. doi:10.1080/01650424.2021.1903509 . Retrieved 2021-08-10.
- ↑ "Hydrovatus japonicus Takizawa, 1933, a New Synonym of Hydrovatus subrotundatus Motschulsky, 1860 (Coleoptera: Dytiscidae)" (PDF). Japanese Journal of Systematic Entomology, 26 (1): 119–120. June 30, 2020. Retrieved 2021-08-07.
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