Helicometra pisodonophi Ha, 2012

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 : 174

Helicometra pisodonophi Ha, 2012

Synonyms: Hamacreadium gymnomuraenae Shen & Li, 2000 n . syn.

Records. From the tiger reef-eel, Scuticaria tigrina (Lesson) ( Anguilliformes : Muraenidae ) [as Gymnomuraena tigrina (Lesson) ] in the South China Sea by Shen & Li (2000) as H. gymnomuraenae . From the longfin snake-eel, Pisodonophis cancrivorus (Richardson) ( Anguilliformes : Ophichthidae ) in the South China Sea by Ha (2012).

Remarks. This species is inconsistent with Hamacreadium because the genital pore is medial, the testes tandem, the cirrus-sac is long, thin and completely anterior to the ventral sucker, and there is no evidence that the excretory vesicle extends into the forebody. The eggs have a short polar filament, consistent with species of Helicometra . Of the species of Helicometra reported from anguilliforms (see Blend & Dronen 2015), the species described by Shen & Li (2000) resembles Helicometra kyliotrema Pritchard, 1966 and H. pisodonophi , and it is synonymised here with the latter because it was described from the same region, whereas the former is from off Hawaii ( Pritchard 1966b).