Female: Body spiral to C-shaped or almost straight. Labial region
narrow truncate to offset rounded; annulated, with or without longitudinal
striae. First labial annulus divided into six sectors, lateral sectors
smaller than the others (SEM). Amphid apertures oval between labial disc
and lateral sectors. Lateral field with four lines usually areolated near
phasmids and anteriorly, sometimes transverse striae scattered over average
sized for the family; knobs rounded to indented. DGO 4-8 um from stylet
base. Esophageal gland overlap dorsal and lateral. Two genital branches
outstretched , equally developed. Epiptygma present. Tail short, rounded;
phasmids enlarged (scutella) situated opposite each other, near anus level.
Male: Caudal alae enveloping tail tip, regular or rarely deeply
lobed. No secondary sexual dimorphism.