1.a. Buccal capsule present, spicules absent.....................................................................................2
b. Buccal capsule absent or reduced, spicules present of absent.....................................................3
2. a. Body fusifome, male tail without caudal alae; no sclertised copulatory plate in male vulva posterior
parasites of swimbladder of
eels...............................................................................................Anguillicolidae
b.
Body filiform, mail tail with bursa, copulatory plate present or absent;
parsites of
peritoneal cavity of freshwater fish............................................................................................Skrjabillanidae
3. a. Vulva anterior or pre-equatorial; monodelphic; peribuccal ring absent; anus functional.................4
b. Vulva equatorial or postequatorial; atrophied in mature females; usually 2 ovaries ........................6
c. Esophagus with muscular and glandular parts; vulva anterior, usually near esophagus; opisthodelphic,
uterus posterior to vulva; spicules, copulatory plaate and caudal ale present or absent....................5
5. a. Males with spicules and caudal alae...........................................................................................Guyanemidae
b. Males withoust spicules or caudal alae........................................................................................Daniconematidae
6. a. Glandular part of esophagus short or absent male tail usually rounded; peribuccal ring absent;
parasites of fish............................................................................................................................Philometridae
7. a. Peribuccal ring absent; moderate sexual dimorphism; funtional annus; parasites of
reptiles: crocdilians and chelonians................................................................................................Micropleuridae
b. Peribuccal ring ususally present; marke sexual dimorphism; anus atrophied in adults;
parasites of reptiles, birds and mammals .......................................................................................Dracunculidae
Aragort, W., Alvarez, F., Iglesias, R., Leiro, J.,\ and Sanmartin, M.L. 2002. Histodytes microocellatus gen. et sp. nov. (Dracunculoidea: Guyanemidae), a parasite of Raja microocellata on the European Atlantic coast (north-western Spain). Parasitol. Res. 88:932-940.
Moravec, F., Molinar, K. and Szekely, C. 1998. Lucionema balatonense gen. et sp. n. , a new nematode of a new family Lucionematidae fam.n. (Dracunculoidea) from the swim bladder of the European pikeperch, Stizostedion lucioperca (Pisces). Folia Parasitologica 45:57-61
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