[Morphological study of 2 pinworms parasitic in man: Enterobius vermicularis and E. gregorii]

The two pinworms parasitic in Man are studied and compared. Enterobius vermicularis (L., 1758) has the larger spicule (100 to 140 micron). E. gregorii Hugot, 1983 has the shorter spicule (70 to 80 micron). The two species can also be differentiated by the cuticular ornamentation associated to the cloacal opening in the males.