Cybister tripunctatus

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Cybister tripunctatus
Cybister tripunctatus ssp. lateralis (Fabricius, 1798) female (8172913092).png
subsp. lateralis female (dorsum)
Cybister tripunctatus ssp. lateralis (Fabricius, 1798) female ventral (8172871133).png
subsp. lateralis female (ventrum)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Dytiscidae
Genus: Cybister
Species:
C. tripunctatus
Binomial name
Cybister tripunctatus
(Olivier, 1795)
Synonyms
  • Cybister asiaticusSharp, 1882
  • Cybister tripunctatus asiaticusRegimbart, 1899

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. [1] [2] [3]

Contents

Description

Nominate subspecies has a typical length is about 28 mm. [4] A carnivorous large beetle feeds on tadpoles, fish, and aquatic insects such as Culex spp., chironomids, and notonectid nymphs, damselfly larvae, Pantala flavescens . [5] It also feeds on sympatric relatives such as Cybister brevis and Cybister chinensis . [6]

Subspecies

Six subspecies identified. [7]

The subspecies orientalis has a body length of about 24 to 29 mm. It is found in China, the Korean Peninsula, Taiwan, and Japan. [6] Subspecies lateralis characterized with typical length of 21 to 30 mm and not fringed with any ciliae of hind margins of the four basal metatarsal segments. pronotum and elytra with lateral reddish margins, elytral lateral margins extending to and including the epipleurae. [9] [10] Subspecies africanus known to live in retro-dune ponds, mouths and residual pools of small streams, preferably on muddy substrates. [11]

Subspecies asiaticus with following features: Head black, with greenish metallic iridescence. Pronotum black and shiny with greenish metallic iridescence. There is a yellowish lateral stripe on pronotum. Elytra blackish with greenish metallic iridescence with yellow lateral borders. [12]

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References

  1. ↑ "INSECTA : COLEOPTERA : ADEPHAGA : FAM. HALIPLIDAE, GYRINIDAE, NOTERIDAE AND DYTISCIDAE". Zool. Surv. India Fauna of Uttar Pradesh, State Fauna Series, 22 (Part-2) : 461-474, 2015. Retrieved 2021-08-06.
  2. ↑ "Cybister tripunctatus". www.cabi.org. Retrieved 2021-08-08.
  3. ↑ "Pheromones and Semiochemicals of Cybister tripunctatus". www.pherobase.com. Retrieved 2021-08-08.
  4. ↑ "Cybister tripunctatus (Olivier, 1795)". www.zin.ru. Retrieved 2021-08-08.
  5. ↑ "Cybister tripunctatus ssp. africanus Laporte, 1855, Dytiscus mutinensis (Pederzani, 1971), and other large water beetles in Corfu (Kérkira)". Bulletin of the Amateur Entomologists' Society. Retrieved 2021-08-06.
  6. 1 2 Ohba, Shin-ya; Inatani, Yoshinori (2012-02-19). "Feeding Preferences of the Endangered Diving Beetle Cybister tripunctatus orientalis Gschwendtner (Coleoptera: Dytiscidae)". Psyche: A Journal of Entomology. 2012: 1–3. doi: 10.1155/2012/139714 .
  7. ↑ "Cybister tripunctatus (Olivier, 1795)". www.gbif.org. Retrieved 2021-08-08.
  8. ↑ Bose, K. C.; Sen, N. S. (1985). "Studies on the preferential feeding habits of the common water beetle, Cybister tripunctatus Asiaticus (sharp) (Dytiscidae:Coleoptera)". Bangladesh Journal of Zoology (Bangladesh). Retrieved 2021-08-08.
  9. ↑ "First record of two species of Cybister Curtis, 1827 (COLEOPTERA: DYTISCIDAE) from Arunachal Pradesh". Rec. zool. Surv. India : 116(Part-1) : 97-98, 2016. Retrieved 2021-08-06.
  10. ↑ 伸也, 大庭 (2020). "Larval feeding habits of an endangered diving beetle, Cybister tripunctatus lateralis (Coleoptera: Dytiscidae), in its natural habitat". Japanese Journal of Environmental Entomology and Zoology. 31: 95–100. doi:10.11257/jjeez.31.95 . Retrieved 2021-08-08.
  11. ↑ Prazzi, Elena; Maraventano, Giuseppe; Billeci, Vincenzo; Sorrentino, Gerry (2020-02-22). "Cybister tripunctatus africanus (Castelnau, 1834) (Coleoptera Dytiscidae): first record for Lampedusa Island (Pelagie Islands, Sicily Channel)". Biodiversity Journal. 11 (1): 15–16. doi: 10.31396/biodiv.jour.2020.11.1.15.16 . S2CID   216467419.
  12. ↑ "INSECT: AQUATIC COLEOPTERA (FAMILY: GYRINIDAE, DYTISCIDAE AND HYDROPHILIDAE)" (PDF). Zool. Surv. India Fauna of KopiU Hydro Electric Project site, Wetland Ecosystem Series 8, 51-57, 2008. Retrieved 2021-08-06.
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