A Study of the Gastrodiscinae Monticelli, 1892 (Gastrodiscidae: Paramphistomoidea)

Abstract
All three genera of the Gastrodiscinae, namely, Gastrodiscus Leuckart, 1877, Homalogaster Poirier, 1883 and Gastrodiscoides Leiper, 1913 are shown to lack a true pars prostatica and cirrus pouch. The two last-mentioned have some part of the male ducts provided with cilia and all three possess papillae on the ventral surface; these papillae are demonstrated to have a very different structure in each of the three genera. These and the male ducts are described and the subfamily Gastrodiscinae and the genus Gastrodiscoides are redefined.Gastrodiscoides hominis is recorded from a Rhesus monkey.

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