Plagioporus kamalai (Gupta, 1956) Gupta, 1956

Martin, Storm B., Cutmore, Scott C., Ward, Selina & Cribb, Thomas H., 2017, An updated concept and revised composition for Hamacreadium Linton, 1910 (Opecoelidae: Plagioporinae) clarifies a previously obscured pattern of host-specificity among species, Zootaxa 4254 (2), pp. 151-187 : 177

Plagioporus kamalai (Gupta, 1956) n. comb.

Synonyms: Allocreadium kamalai Gupta, 1956 ; Hamacreadium kamalai (Gupta, 1956) Yamaguti, 1971 .

Records. From Salmophasia bacaila [as Chela bacala ], obtained at Lucknow fish market, Uttar Pradesh, India by Gupta (1956) as A. kamalai .

Remarks. Yamaguti (1971) transferred this species to Hamacreadium but it clearly does not belong there because it has an entire ovary and is from freshwater fishes. It is inconsistent with Allocreadium Looss, 1900 (Allocreadiidae) , in which it was originally described, because the intestine bifurcates in the forebody and the ventral sucker is substantially larger than the oral sucker ( Caira & Bogéa 2005). Although the original illustration depicts a specimen badly misshapen by flattening, it is clear that the genital pore is sinistral and that the ventral sucker is distinctly larger than the oral, thus it is more consistent with Plagioporus than Eucreadium.

Two Plagioporus species, Plagioporus gonii Bilqees & Khan, 1988 and Plagioporus gibsoni Bilqees, Shaikh & Khan, 2010 , were described from the same host, the kuria labeo , Labeo gonius (Hamilton) (Cyprinidae) , and from the same freshwater lake in Pakistan. Bilqees et al. (2010) distinguished these species based on the size of the ventral sucker, but here they are considered indistinguishable and P. gibsoni is thus a junior synonym of P. gonii . Plagioporus kamalai resembles P. gonii , but in that species the vitelline follicles do not extend anterior to the intestinal bifurcation ( Bilqees & Khan 1988).