nonbursate

non·bur·sate

(non-bŭr'sāt),
Denoting a nontaxonomic division of Nematoda embracing those in which the male copulatory bursa is only a skin fold containing no fleshy ribs, as seen in hookworms and other bursate nematodes.
[L. non, not, + Mediev. L. bursa, purse]