Genus Zygotylenchus
Pratylenchinae.
Body length under 1mm. No sexual dimorphism of anterior body. Deirids absent. Lip region truncate, flattened anteriorly. By SEM face characterized by fusion of homologous medial lip secters together and with oral disc. Labial sclerotization strong. Oesophageal glands in line; long ventral overlap of the intestine. Oesophago-intestinal valve not developed. Female genital tract with two branches equally developed. Phasmids about mid-tail. Male tail tip truncate to rounded. Gubernaculum not protruding. Caudal alae terminal.

Zygotylenchus guevarai

 Zygotylenchus taomasinae