''Oscheius tipulae'' is a species of nematodes, described in association of the leatherjacket, the larva of ''

Tipula paludosa ''Tipula paludosa'' is a species of true craneflies, family Tipulidae. It is also known as the European crane fly or the marsh crane fly. It is a pest in grasslands of Northwest Europe and has been accidentally introduced to North America. Distr ...

''. ''O. tipulae'' is a satellite developmental genetic model organism used to study

vulva The vulva (plural: vulvas or vulvae; derived from Latin for wrapper or covering) consists of the external sex organ, female sex organs. The vulva includes the mons pubis (or mons veneris), labia majora, labia minora, clitoris, bulb of vestibu ...

formation.Polymorphism and evolution of vulval precursor cell lineages within two nematode genera, Caenorhabditis and Oscheius. M Delattre, MA Félix - Current Biology, 2001 It is an

androdioecious Androdioecy is a reproductive system characterized by the coexistence of males and hermaphrodites. Androdioecy is rare in comparison with the other major reproductive systems: dioecy, gynodioecy and hermaphroditism. In animals, androdioecy has bee ...

species characterized by the coexistence of males and hermaphrodites.

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Rhabditidae Nematodes described in 1971 Animal models {{Rhabditida-stub