Ichthydium (Ichthydium) auritum Brunson, 1950

Chatterjee, Tapas & Todaro, M. Antonio, 2021, An annotated checklist of the chaetonotidan Gastrotricha from India, Zootaxa 5027 (3), pp. 332-350 : 341

publication ID	https://doi.org/10.11646/zootaxa.5027.3.2
publication LSID	lsid:zoobank.org:pub:FC464127-CED8-4F28-8A50-F8A0BCD08D49
DOI	https://doi.org/10.5281/zenodo.5492828
persistent identifier	https://treatment.plazi.org/id/DE119158-571C-FFA1-55B8-F9CEFD38DCDB
treatment provided by	Plazi (2021-09-01 07:10:59, last updated 2023-11-06 14:28:00)
scientific name	Ichthydium (Ichthydium) auritum Brunson, 1950
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Ichthydium (Ichthydium) auritum Brunson, 1950 View in CoL

Records from India. WEST BENGAL: Achipur in South 24 Parganas District — Sharma (1980) ; MEGHALAYA: Sharma & Sharma (1990); GENERAL RECORD: Naidu & Rao (2004).

Habitat (as in Indian records): Freshwater; among filamentous algae and aquatic plants.

Distribution. USA and India.

Remarks. Naidu & Rao (2004), following Schwank’s (1990) classification indicate several species as belonging to the subgenus Euichthydium . However, as explained by Kånneby et al. (2009), the subgenus Euichthydium Schwank, 1990 is invalid because it contains the type-species of the genus Ichthydium , therefore it must bear the same name as the genus.

Ichthydium auritum was found in India twice and both records are from West Bengal ( Sharma 1980; Sharma & Sharma 1990). The specimens found match the original description especially in showing the posterior lobes of the head in the form of ear-like flaps. Regarding this latter detail Sharma (1980) considered Ichthydium sp. previously found in Andhra Pradesh by Rao & Mohan (1984) to be a different species, whose taxonomic status remains to be established. We agree with Sharma’s hypothesis.

References

Brunson, R. B. (1950) An introduction to the taxonomy of the Gastrotricha with a study of eighteen species from Michigan. Transactions of the American Microscopical Society, 69, 325 - 352. https: // doi. org / 10.2307 / 3223127

Kanneby, T., Todaro, M. A. & Jondelius, U. (2009) One new species and records of Ichthydium Ehrenberg, 1830 (Gastrotricha: Chaetonotida) from Sweden with a key to the genus. Zootaxa, 2278 (1), 26 - 46. https: // doi. org / 10.11646 / zootaxa. 2278.1.2

Naidu, K. V. & Rao, G. C. (2004) Gastrotricha. In: Fauna of India and the adjacent countries. Zoological Survey of India, Kol- kata, pp. 169.

Rao, R. K. & Mohan, P. C. (1984) Ichthydium auritum Brunson, 1950 (Gastrotricha), a new record for India. Geobios New Report, 3, 45 - 46.

Schwank, P. (1990) Gastrotricha. In: Braur, A., Schwoerbel, J. & Zwick, P. (Eds.), Susswasser Fauna von Mitteleuropa. Band 3. Heft 1. 2. Gastrotricha und Nemertini. Gustav Fischer Verlag, Stuttgart and Jenai, pp. i - xvi + 1 - 262.

Sharma B. K. & Sharma S. (1990) On some Freshwater Gastrotricha from N. E. Region. Records of the Zoological Survey of India, 86, 211 - 215.

Sharma, B. K. (1980) Taxonomic notes on some freshwater Gastrotricha from West Bengal, India. Hydrobiologia, 70, 265 - 267. https: // doi. org / 10.1007 / BF 00016769