Hydaticus vittatus

Hydaticus vittatus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Suborder:	Adephaga
Family:	Dytiscidae
Subfamily:	Dytiscinae
Tribe:	Hydaticini
Genus:	Hydaticus
Species:	H. vittatus
Binomial name
Hydaticus vittatus (Fabricius, 1775)
Synonyms
Dytiscus vittatusFabricius, 1775 Hydaticus vittatusAube, 1838 Graphoderus vittatusMotschulsky, 1856 Hydaticus vittatus vittatusRocchi, 1986 Prodaticus vittatusMiller et al. 2009 Hydaticus vittatus var. angustulusRegimbart, 1899 Hydaticus vittatus angustulusSato, 1961 Hydaticus vittatus ab. conjungensGuignot, 1954 Graphoderes vittatus lenziSchonfeldt, 1890 Hydaticus vittatus ab. lenziZimmermann, 1920 Hydaticus lenziSato, 1961 Hydaticus lenzi conjungensSato, 1961 Hydaticus lenzi nepalensisSato, 1961 Hydaticus lenzi nepalensis f. swaniSato, 1961 Hydaticus sesquivittatusFairmaire, 1880 Hydaticus leechiMukhopadhyay & Ghosh, 2003

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. ^[1]

Description

The beetle has a highly variable body shape characterized by geographic variations, with a typical body length ranging from 11.3 to 14.6 mm. The head is blackish, becoming variably yellow anteriorly. The pronotum is also black, but yellowish laterally. The elytra have two bright golden yellow longitudinal lateral stripes in the basal half. ^[2] Large black markings occur on the elytra and pronotum. The yellow stripes on the lateral sides of the pronotum are narrow. In males, the aedeagus in lateral view lacks a longitudinal ridge near the ventral margin in the apical third. ^{[3] [4]} The posterior margins of the first four segments of hind tarsi are transversely lined with a coarse fringe of flat, adpressed, golden-yellow setae. ^[5]

Biology

Adults are inhabited in rain water pools, muddy buffalo wallows with grassy margins, fish ponds, small streams, puddles on roads, ditches in forests and artificial pools and paddy fields. ^[3]

Subspecies

Two subspecies identified. ^[6]

• Hydaticus vittatus angustulusRégimbart, 1899
• Hydaticus vittatus vittatus(Fabricius, 1775)

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. "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.
3. "Revision of the Asian and Australian/Pacific species of the Hydaticus (Prodaticus) vittatus and H. (P.) daemeli species groups (Coleoptera: Dytiscidae)" (PDF). Koleopterologische Rundschau 90 25–72 Wien, September 2020. Retrieved 2021-08-06.
4. Crossland, Michael R. (1998). "Ontogenetic Variation in Toxicity of Tadpoles of the Introduced Toad Bufo marinus to Native Australian Aquatic Invertebrate Predators". Herpetologica. 54 (3): 364–369. JSTOR   3893154 . Retrieved 2021-08-08.
5. "Freshwater Macroinvertebrates in Hong Kong". www.biosch.hku.hk. Retrieved 2021-08-08.
6. "Hydaticus vittatus (Fabricius, 1775)". www.gbif.org. Retrieved 2021-08-08.