# Microcotyle polymixiae
> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Microcotyle_polymixiae
> Markdown URL: https://mediated.wiki/source/Microcotyle_polymixiae.md
> Source: https://en.wikipedia.org/wiki/Microcotyle_polymixiae
> Source revision: 1310358573
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)
{{short description|Species of worms}}
{{Speciesbox
| image =
| image_caption =
| genus = Microcotyle
| species = polymixiae
| authority = [Yamaguti](/source/Satyu_Yamaguti), 1968
| synonyms =
}}
'''''Microcotyle polymixiae''''' is a [species](/source/species) of [monogenean](/source/monogenean), [parasitic](/source/fish_parasites) on the [gills](/source/gills) of a marine [fish](/source/fish). It belongs to the family [Microcotylidae](/source/Microcotylidae). It was first described and illustrated based on 82 whole mounts, from the gills of the silver eye, ''Polymixia japonica'' ([Polymixiidae](/source/Polymixiidae)) off [Hawaii](/source/Hawaii).[Yamaguti, S. (1968). Monogenetic Trematodes of Hawaiian Fishes. Honolulu: University of Hawaii Press.]
==Description==
''Microcotyle polymixiae'' has the general morphology of all species of ''Microcotyle'', with a flat lanceolate body, tapered anteriorly 3.5-8.5 mm in length, comprising an anterior part which contains most organs and a posterior part called the [haptor](/source/haptor). The haptor is symmetrical, hatchetshaped in profile and bears 57-88 [clamps](/source/clamp_(zoology)), arranged as two rows, one on each side(26-47
on the right and 27-47 on the left). The clamps of the haptor attach the animal to the [gill](/source/gill) of the fish. There are also two small buccal [suckers](/source/sucker_(zoology)) strongly muscular, septate, unarmed and located at the anterior extremity. The digestive organs include an anterior, terminal mouth, a simple esophagus, a muscular rounded [pharynx](/source/pharynx), and a posterior [intestine](/source/intestine) with two lateral blind-ending branches terminating separately at the posterior end of the body proper. Each adult contains male and female reproductive organs. The reproductive organs include an anterior circular genital atrium opening a little in front of intestinal bifurcation., with [spines](/source/spine_(zoology)), a dorsal [vagina](/source/vagina) unarmed, opening middorsally just in front of body constriction, a single [ovary](/source/ovary), and 15 to 75 oval [testes](/source/testicle) occupying the entire postovarian interintestinal field. The eggs are fusiforme with an anterior filament that is extremely fine, and convoluted; and a posterior filament that is short, and usually curved.