Stylocheiron affine   Hansen,  1910 (Euphausiid)
Organism information awaits expert curation
Class: Malacostraca

Size: Length 5.4-8.5 mm.

Rostrum long and slender in the female, reaching to, or beyond the anterior eye, shorter in the male. The carapace is keeled dorsally. The eyes are less than twice as high as broad, with the lower end less than twice as wide as the upper end. At the upper narrow end are 4-7 crystalline cones in a transverse row. The first antennal peduncle in both sexes is about as long as the carapace, relatively shorter in the male. In the female the upper flagellum is cylindrical and slender and around as long as the peduncle while in the male the distal parts of both flagella are flattened and wider. The elongated third thoracic limb terminates in the typical chelae of the genera. The second last segment has a long, strong curved spine and 2 shorter spines.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Habitat:  Pelagic, Coastal


• Kerala, Kochi INDIA
• Maharashtra, Mumbai INDIA
• Arabian Sea
• Lakshadweep INDIA
• Red Sea
• West Coast INDIA

Literature Source(s)
  • Brinton, E and Gopalkrishnan, K The distribution of Indian Ocean Euphausiids 357-382
  • Conway, DVP; White, RG; Hugues-Dit-Ciles, J; Gallienne, CP and Robins, DB (2003) Guide to the coastal and surface zooplankton of the south western Indian Ocean Occasional publication no 15 Marine Biological Association of the United Kingdom Occasional Publication of the Marine Biological association of the United Kingdom 354 pp Available at -
  • Gibbons, MJ (1995) Observations on euphausiid assemblages of the south coast of South Africa South African Journal of Marine Science 16 141-148 Available at - NIO, Goa
  • Mathew, KR; Sivan, G; Krishnakumar, PK and Kuriakose, S (2003) Euphausiids of the west coast of India CMFRI, Cochin, Kerala, India 78 1-155 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Sealifebase Available at -
  • Sebastian, MJ (1966) Euphausiacea from Indian Seas: Systematics and general considerations Proceedings of Symposium on Crustacea Marine Biological Association of India, Mandapam Camp Part-I 233-254 Available at - NIO, Goa
  • Silas, EG and Mathew, KJ (1986) Spatial distribution of euphausiacea (crustacea) in the southeastern Arabian sea Journal of the marine biological association of India The marine biological association of India 28(1&2) 1-21 Available at - NIO, Goa

Page last updated on:2011-04-08

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