Chydorus angustirostris Frey, 1987

CHATTERJEE, TAPAS, KOTOV, ALEXEY A., DAMME, KAY VAN, CHANDRASEKHAR, S. V. A. & PADHYE, SAMEER, 2013, An annotated checklist of the Cladocera (Crustacea: Branchiopoda) from India, Zootaxa 3667 (1), pp. 1-89 : 52-53

(109) Chydorus angustirostris Frey, 1987

Type locality. " Pond at Jabalpur in Madhya Pradesh ", India ( Frey 1987b) .

Indian records. Madhya Pradesh, Jammu & Kashmir — Frey (1987b) .

Remarks. Valid species.

Distribution. Known only from two localities in India, possibly an endemic ( Frey 1987b). Not reported since after Frey’s description, perhaps this publication is overlooked in general Indian cladocera studies, or most Chydorus species are simply confused on general appearance, as in many regions.

Chydorus barroisi , see Ephemeroporus barroisi

Chydorus bicornutus Doolittle, 1909

Indian records. Rajasthan —Sharma V. et al. (2012).

Remarks. C. bicornutus was described from Maine, U.S.A. ( Doolittle, 1909). This taxon is exclusively a North American one, while some other honeycombed foms are present in the Oriental zone ( Frey 1987b). No ideas what Sharma V. et al. (2012) meant.

Chydorus brehmi Biswas, 1966

Type locality. " Dudu Talao , Dudu, Jaipur District, Rajasthan ", India ( Biswas 1966) .

Indian records. Maharashtra — Rane (2005a) (as C. eurynotus brehmi ); Rajasthan — Biswas (1966, 1971); Tamil Nadu — Raghunathan & Suresh Kumar (2002, 2009); General record— Raghunathan & Kumar (2003).

Remarks. Incerta sedis according to Smirnov (1996), but a more certain conclusion could be made based on the author’s types in the Zoological Survey of India ( Biswas 1966). C. brehmi is a junior synonym of C. ventricosus Daday, 1898 according to Michael & Hann (1979).

Chydorus carolinae Methuen, 1910

Indian record: Jammu & Kashmir— Yousuf et al. (1984)

Remarks. Unlikely record. This taxon is a South African endemic, which is housed under Pleuroxus , not Chydorus ; Pleuroxus carolinae (Methuen, 1910) belongs to the P. aduncus group ( Smirnov et al. 2006). The only Indian record is quite certainly a misidentification, likely confused with another chydorine of similar appearance.

Chydorus ceylonicus Daday, 1898

Indian records. General record— Fernando & Kanduru (1984).

Remarks. C. ceylonicus Daday, 1898 was described from Sri Lanka ( Daday 1898). Now this taxon is regarded as an incerta sedis ( Smirnov 1996), but some conclusions could be made when Daday’s types would be studied ( Forró & Frey 1982).

Chydorus ciliatus Poggenpol, 1874

Indian records. General record— Fernando & Kanduru (1984).

Remarks. Dubious record. This taxon was described from European Russia ( Poggenpol 1874). It is regardes as incerta sedis ( Smirnov 1996). Most probably, Fernando & Kanduru (1984) meant C. cf. pubescens Sars, 1901 , characterized by setules on the carapace.

Chydorus denticulatus Henry, 1919

Indian records. Rajasthan — Biswas (1971); Meghalaya — Patil (1976); General record— Raghunathan & Suresh Kumar (2003).

Remarks. This taxon was described from Australia ( Henry 1919). It is regarded as a junior synonym of Pleuroxus inermis Sars, 1896 ( Frey 1991b; Smirnov 1996), an Australian endemic ( Sars 1896). Its presence in India, or even out of Australia, is dubious.