Hamacreadium indicum Gupta & Tewari, 1984 incertae sedis

Records. One specimen from the dorab wolf-herring, Chirocentrus dorab (Forsskål) ( Clupeiformes: Chirocentridae), in the Bay of Bengal, off Chennai, India by Gupta & Tewari (1984).

Remarks. Bray & Cribb (1989) considered this species synonymous with H. mutabile, but the original description is lacking in detail and the host is unlikely. The digenean fauna of Chirocentrus dorab from Indian waters is well studied (see Madhavi 2011) and includes several opecoelids, but none consistent with the description by Gupta & Tewari (1984). There is no indication that it is not an opecoelid, but it does not convincingly represent a species of Hamacreadium, nor can it adequately be placed elsewhere; it is considered a species incertae sedis for the present.