_Body_(Euzet_%26_Marc).png){kind=link}
Belongs within: Polyopisthocotylea.
The Microcotylidae are a group of monogenean flukes in which the opisthaptor comprises numerous (at least sixteen in the adult) pairs of clamps (Dawes 1956).
Characters (Dillon & Hargis 1965): Elongate, flattened dorsoventrally. Prohaptor a pair of septate or aseptate buccal suckers placed laterally in walls of buccal funnel; usually armed with sclerotised, tooth-like papillae. Posthaptor variable in shape, symmetrical, subsymmetrical, or slightly asymmetrical; not divided into two separate marginal frills. Posthaptor armed with numerous bilateral clamps; accessory sclerites absent. Anchors absent in adults. Esophagus with or without lateral branches; gut bifurcated, with medial and lateral branches; may or may not be confluent posteriorly. Testes numerous, follicular, postovarian (occasionally paraovarian). Genital atrium armed or unarmed; cirrus armed or unarmed. Ovary irregularly looped (exceptionally globular). Vitellaria follicular, well developed in posterior part of body. Vagina present, single or double. Eggs usually filamented, either at one or both poles.
<==Microcotylidae [Gonoplasiinae, Microcotylinae]
|--Cestrocolpa Meserve 1938D56
|--Axinoides Yamaguti 1938D56
| `--A. oceanicum (Caballero, Bravo-Hollis & Grocott 1953) [=Microcotyle oceanicum]DH65
|--Gotocotyle Ishii 1936D56
|--Gonoplasius Sandars 1944S44
| |--*G. georgianus Sandars 1944S44
| |--G. longirostri (Robinson 1961)DH65
| `--G. truttae Dillon & Hargis 1965DH65
|--Diplasiocotyle Sandars 1944S44
| `--*D. johnstoni Sandars 1944S44
|--Aspinatrium Yamaguti 1963DH65
| |--*A. spari (Yamaguti 1937) [=Microcotyle spari]DH65
| |--A. acanthogobii (Yamaguti 1940) [=Microcotyle acanthogobii]DH65
| |--A. gerres (Sandars 1944) [=Microcotyle gerres]DH65
| |--A. pogoniae (MacCallum 1913) [=Microcotyle pogoniae]DH65
| `--A. virgatarum (Tubangui 1931) [=Microcotyle virgatarum]DH65
|--Bivagina Yamaguti 1963DH65
| |--*B. tai (Yamaguti 1938) [=Microcotyle tai]DH65
| |--B. alcedinis (Parona & Perugia 1890) [=Microcotyle alcedinis]DH65
| |--B. baumi (Sprehn 1929) [=Microcotyle baumi]DH65
| |--B. pagrosomi (Murray 1931) [=Microcotyle pagrosomi]DH65
| `--B. sillaginae (Woolcock 1936) [=Microcotyle sillaginae]DH65
|--Cynoscionicola Price 1962DH65
|--Microcotyloides Fujii 1944DH65
|--Neobivagina Dillon & Hargis 1965DH65
| |--*N. canthari (van Beneden & Hesse 1863) [=Microcotyle canthari, Diplasiocotyle canthari]DH65
| |--N. agonostomi (Sandars 1945) [=Microcotyle agonostomi]DH65
| |--N. australis (Murray 1931) [=Microcotyle australis, Bivagina australis]DH65
| `--N. pelotretis Dillon & Hargis 1965DH65
|--Pauciconfibula Dillon & Hargis 1965DH65
| |--*P. trachini (Parona & Perugia 1889) [=Microcotyle trichini, Aspinatrium trichini, Diplasiocotyle trichini]DH65
| `--P. draconis (Briot 1904) [=MNicrocotyle draconis]DH65
|--Tripathia Yamaguti 1963DH65
`--Microcotyle van Beneden & Hesse 1863DH65
|--*M. donovani van Beneden & Hesse 1863DH65
|--M. acanthurum Parona & Perugia 1890D56
|--M. arripis Sandars 1945S45
|--M. australiensis MacCallum 1931S45
|--M. bassensis Murray 1931S45
|--M. brevis Dillon & Hargis 1965DH65
|--M. caudataS45
|--M. centrodonti Brown 1929D56
|--M. chrysophryi Beneden & Hesse 1863D56
|--M. constricta Robinson 1961DH65
|--M. debueni Mañe-Garzón 1959DH65
|--M. ditrematisS44
|--M. elegans Goto 1895S45
|--M. erythrini Beneden & Hesse 1863D56
|--M. fusiformis Goto 1894D56
|--M. helotes Sandars 1944S44
|--M. hiatulae Goto 1899S45
|--M. incisor Linton 1910S44
|--M. labracis Beneden & Hesse 1863D56
|--M. lichiae Ariola 1899D56
|--M. mormyri Lorenz 1878D56
|--M. mugilis Vogt 1878D56
|--M. nemadactylus Dillon & Hargis 1965DH65
|--M. neozelanicus Dillon & Hargis 1965DH65
|--M. odacis Sandars 1945S45
|--M. pancerii Sonsino 1891D56
|--M. parasillaginae Sandars 1945S45
|--M. pentapodi Sandars 1944S44
|--M. pomatomiK-M02g
|--M. poronotiK-M02h
|--M. reticulata Goto 1895S44
|--M. salpae Parona & Perugia 1890D56
|--M. sargi Parona & Perugia 1889D56
|--M. sciaenicolaS45
|--M. scorpis Sandars 1944S44
|--M. sebastis Goto 1895S45
|--M. seriolae Yamaguti 1939S44
|--M. spinicirrusD56
|--M. temnodontis Sandars 1945S45
|--M. truncataS45
`--M. victoriae Woolcock 1936DH65
*Axine belones Abildgaard 1794 [incl. A. orphii Beneden & Hesse 1863, Heteracanthus pedatus Diesing 1836, A. triglae Beneden & Hesse 1863]D56
*Type species of generic name indicated
References
[D56] Dawes, B. 1956. The Trematoda with special reference to British and other European forms 2nd ed. University Press: Cambridge.
[DH65] Dillon, W. A., & W. J. Hargis Jr. 1965. Monogenetic trematodes from the southern Pacific Ocean. 2. Polyopisthocotyleids from New Zealand fishes: the families Discocotylidae, Microcotylidae, Axinidae, and Gastrocotylidae. In: G. A. Llano (ed.) Biology of the Antarctic Seas II pp. 251–280. American Geophysical Union.
[K-M02a] Klein-MacPhee, G. 2002a. Bluefish. Family Pomatomidae. In: Collette, B. B., & G. Klein-MacPhee (eds) Bigelow and Schroeder’s Fishes of the Gulf of Maine 3rd ed. pp. 400–406. Smithsonian Institute Press: Washington.
[K-M02b] Klein-MacPhee, G. 2002b. Butterfishes. Family Stromateidae. In: Collette, B. B., & G. Klein-MacPhee (eds) Bigelow and Schroeder’s Fishes of the Gulf of Maine 3rd ed. pp. 540–545. Smithsonian Institute Press: Washington.
[S44] Sandars, D. F. 1944. A contribution to the knowledge of the Microcotylidae of Western Australia. Transactions of the Royal Society of South Australia 68 (1): 67–81.
[S45] Sandars, D. F. 1945. Five new microcotylids from fish from Western Australian waters. Journal of the Royal Society of Western Australia 29: 107–135.