Belonolaimus Steiner, 1949
Belonolaiminae. SEM face view shows a well marked, rounded labial disc, and first lip annulus divided into six sectors, lateral sectors almost completely regressed, seen only as small interruptions of the first one or two labial annuli. Labial region marked by deep longitudinal grooves. Stylet very long, 60-150 um long, its cone 70-80% of total stylet length. Corpus as in Morulaimus. Oesophageal glands overlapping beginning of intestine. Female tail cylindroid with a broadly rounded terminus. Lateral field with four lines or less.