{{short description|Species of worms}} {{Speciesbox | image = | image_caption = | genus = Microcotyle | species = emmelichthyops | authority = Yamaguti, 1968 | synonyms = }}
'''''Microcotyle emmelichthyops''''' is a species of monogenean, parasitic on the gills of a marine fish in Hawaii. It belongs to the family Microcotylidae.<ref name="Yamaguti1968">Yamaguti, S. (1968). Monogenetic Trematodes of Hawaiian Fishes. Honolulu: University of Hawaii Press.</ref>
==Description== The species was described from 23 specimens. ''Microcotyle emmelichthyops'' has the general morphology of all species of ''Microcotyle'', with a flat body, 2.3-11 mm in length, comprising an anterior part which contains most organs and a posterior part called the haptor. The haptor is symmetrical and bears 62-115 clamps, arranged as two rows, one on each side. The clamps of the haptor attach the animal to the gill of the fish. There are also two small buccal suckers at the anterior extremity. The digestive organs include an anterior, terminal mouth, a muscular pharynx, and a posterior intestine with two lateral blind-ending branches. Each adult contains male and female reproductive organs. The reproductive organs include an anterior genital atrium, with spines, a dorsal vagina, a single ovary, and 20-46 testes which are posterior to the ovary.<ref name="Yamaguti1968"/>
Yamaguti<ref name="Yamaguti1968"/> considered that the species "differed from the most closely related ''Microcotyle cepolae'' <small>Yamaguti, 1937</small> in the genital atrium consisting of a larger anterior and a smaller posterior chamber and in the number of testes (20-46 vs 15-20)".
==Hosts and localities== The type-host is an unidentified fish of the genus ''Emmelichthyops''. The type-locality is off Hawaii. Yamaguti<ref name="Yamaguti1968"/> described two other species of ''Microcotyle'' from Hawai: ''Microcotyle polymixiae'' and ''Microcotyle bothi'', from different host-fish.
== References == {{Reflist}}
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Category:Microcotyle Category:Animals described in 1968 Category:Parasites of fish Category:Invertebrates of Hawaii