Three new species of Hoplolaiminae are described and illustrated. Hopl
olaimus maggentii n. sp. is characterized by the presence of longitudi
nal striations in the basal annule, and the labial region with 3 to 5
annules and incomplete annulation. The lateral field is without longit
udinal lines and areolation along body. Males were not observed. H. ig
ualaensis is characterized by the lateral field with four longitudinal
lines, areolation absent, both scutella between vulva and anus, and s
tylet knobs with small denticles. Aorolaimus mexicaniensis n. sp. is c
haracterized by the slightly offset labial annule with irregular incis
ures. Males are abundant, and gubernaculum without titillae.