Hydaticus fabricii

Hydaticus fabricii
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Family:	Dytiscidae
Subfamily:	Dytiscinae
Tribe:	Hydaticini
Genus:	Hydaticus
Species:	H. fabricii
Binomial name
	Hydaticus fabricii; (W.S. MacLeay, 1825)
Synonyms
	Colymbetes fabriciiW.S. Macleay, 1825; Dytiscus variusFabricius, 1801; Hydaticus fabriciusiBall, 1932; Hydaticus rufulusAubé, 1838; Dytiscus variusFabricius, 1801; Hydaticus leanderPeschet, 1917; Hydatiaus incertusVazirani, 1969;

Last updated January 18, 2024

Hydaticus fabricii, is a species of predaceous diving beetle found in India, Afghanistan, Myanmar, Nepal, Pakistan, Sri Lanka, China, Indonesia, Iran, Japan, Philippines, Taiwan, Thailand, Vietnam and Australia.^[1]^[2]

Subspecies

Three subspecies are identified.^[3]

Hydaticus fabricii confususBoheman, 1858
Hydaticus fabricii fabricii(W.S.MacLeay, 1825)
Hydaticus fabricii loeffleriWewalka, 1979

Most authors have grouped at least eight forms: six species and two subspecies under the name H. fabricii, which can hardly be separated according to external characteristics, but can be clearly differentiated according to the male genitalia.^[4] This oval shaped beetle has a body size of about 9.0 to 10.7 mm. Front and rear edges of the pronotum are clearly darkened. The bristles on the rear edge of the hind tarsal phalanx are quite long on the upper side. There is a bristle border on the rear edge of the adhesive disc in the fore tarsi of male. These bristles are longer than half the length of the limb. In male, aedeagus is fairly straight and has a tip long bristle plate in penis.^[5]

The subspecies loeffleri is much smaller than nominate subspecies. The penis tip is slightly curved. The subspecies confusus, has a slimmer penis and the bristle plate is at the tip of the penis much shorter than ssp. fabricii.^[5]

Related Research Articles

Hydaticus is a genus of predatory water beetle belonging to the family Dytiscidae. Hydaticus can be found throughout most of the world. There are 150 described species and 12 subspecies in two subgenera in the genus Hydaticus.

Prodaticus is a subgenus of beetles of the genus Hydaticus in the family Dytiscidae. These 143 species are in the subgenus Prodaticus:

Copelatus taprobanicus is a species of diving beetle endemic to Sri Lanka. It is part of the genus Copelatus in the subfamily Copelatinae of the family Dytiscidae. It was described by Wewalka & Vazirani in 1985.

Neptosternus ceylonicus is a species of beetle. Its holotype was found in Sri Lanka. The specimens were captured in running water or when flying towards light in the evening.

Agabus aequalis is a species of predatory diving beetle belonging to the family Dytiscidae. This species inhabits rivers and bogs. It has been found in Transbaikal, Primorsky Krai, and Sakhalin in the Russian Far East, Jilin and Sichuan provinces, China, and Arkhangai and Övörkhangai provinces, Mongolia.

Berosus pulchellus, is a species of water scavenger beetle found in Oriental, Australasian, Afrotropical and Palaearctic regional countries such as India, Sri Lanka, Hong Kong, Japan, Iran, Cambodia and Australia.

Hydrovatus castaneus, is a species of predaceous diving beetle found in India, Myanmar, Indonesia, Sri Lanka, Bangladesh, and China.

Hydaticus vittatus, is a species of predaceous diving beetle found in India, Pakistan, Sri Lanka, Nepal, Bangladesh, Bhutan, Myanmar, China, Japan, Taiwan, Thailand, Cambodia, Laos, Vietnam, Malaysia and Indonesia.

Hydaticus ricinus, is a species of predaceous diving beetle found in India, Afghanistan, Bhutan, Myanmar, Nepal, Pakistan, Sri Lanka, China, Laos, Thailand, and Vietnam.

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.

Herophydrus musicus, is a species of predaceous diving beetle found in Asia 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.

Cybister ventralis, is a species of predaceous diving beetle found in India, Bangladesh, Myanmar, Pakistan, Sri Lanka and China.

Hydaticus incertus, is a species of predaceous diving beetle found in India, Bhutan, Myanmar, Nepal, Sri Lanka, China, Malaysia, and Thailand.

Hydaticus pacificus, is a species of predaceous diving beetle found in South and South East Asia.

Hydrovatus picipennis, is a species of predaceous diving beetle found in India, Sri Lanka, Indonesia, Philippines, China and Thailand.

Hydrovatus lyratus, is a species of predaceous diving beetle widespread in South Asia, South East Asia and Australian region.

Laccophilus ellipticus, is a species of predaceous diving beetle widespread in India, Myanmar, Sri Lanka, China, Cambodia, Indonesia, Thailand, and Vietnam.

Microdytes maculatus, is a species of predaceous diving beetle found in India, Thailand, Southern Andaman Islands, Sri Lanka, China, Thailand, Laos and Myanmar.

Uvarus livens, is a species of predaceous diving beetle found in India, Andaman & Nicobar Islands, Bangladesh, Sri Lanka, and Malaysia.

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.
↑ "Coleoptera (Insecta) Fauna from the Indian Thar Desert, Rajasthan" (PDF). Zoos' print journal, 2004. Retrieved 2021-08-07.
↑ "Hydaticus fabricii (W.S.MacLeay, 1825)". www.gbif.org. Retrieved 2021-08-10.
↑ "Revision of the Hydaticus (Prodaticus) sexguttatus species group, and resembling species from the Palearctic, Oriental, Australian and Pacific Regions (Coleoptera: Dytiscidae)" (PDF). Koleopterologische Rundschau 85 7–55 Wien, September 2015. Retrieved 2021-08-07.
1 2 "REVISION DER ARTENGRUPPE DES HYDATICUS (GUIGNOTITES) FABRICII (MAC LEAY), (COL.,DYTISCIDAE" (PDF). Koleopterologische Rundschau, Band 54 (1979). Retrieved 2021-08-07.

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[1] "Catalogue of the diving beetles of India and adjacent countries (Coleoptera: Dytiscidae)" (PDF). Skörvnöpparn, Umeå Supplement 3, 2012: 1-77. Retrieved 2021-08-07.

[2] "Coleoptera (Insecta) Fauna from the Indian Thar Desert, Rajasthan" (PDF). Zoos' print journal, 2004. Retrieved 2021-08-07.

[3] "Hydaticus fabricii (W.S.MacLeay, 1825)". www.gbif.org. Retrieved 2021-08-10.

[4] "Revision of the Hydaticus (Prodaticus) sexguttatus species group, and resembling species from the Palearctic, Oriental, Australian and Pacific Regions (Coleoptera: Dytiscidae)" (PDF). Koleopterologische Rundschau 85 7–55 Wien, September 2015. Retrieved 2021-08-07.

[FABRICII-5] 1 2 "REVISION DER ARTENGRUPPE DES HYDATICUS (GUIGNOTITES) FABRICII (MAC LEAY), (COL.,DYTISCIDAE" (PDF). Koleopterologische Rundschau, Band 54 (1979). Retrieved 2021-08-07.

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