Lagochilascaris minor Leiper, 1909 is a parasitic nematode with its
biological cycle still unknown, even though it was found in humans,
domestic and silvatic animals. Adult worms, collected by surgical drainage
from a human patient from the State of Para, Brazil, were micrographed
using a scanning electron microscope. Morphological aspects of males and
females such as cephalic structures, caudal papillae and cuticular patterns
were analyzed and compared with the previous descriptions adding new data
for the identification of this species.