Abstract
Distolabrellus magnivulvatus sp. n., collected from green-house soil in central Iberian peninsula, is described and illustrated. It is characterized by having 0.89-1.07 mm long body in females and 0.65-0.99 mm in males, cuticle tesselated, lateral fields with three longitudinal incisures, lip region almost continuous and 10-13 um wide, lips dimorphic (alternately extremely reduced and ovoid), stoma 22-30 um long or 2.0-2.8 times lip region diameter, pharyngeal collar shorter than half of total stomalength, distance to pharyngo-intestinal junction 148-190 urn, V= 82-86, vulva a transverse slit located in a vulval cone and with its anterior lip bearing a flap-like structure, body cuticle surrounding the vulva especially differentiated, female tail conical with acute tip (68-90 |im, c = 10.9-14.6, c' = 2.1-4.5), male tail conical (23-32 urn, c = 24.8-34.0; c' = 1.0-1.4), bursa peloderan and open anteriorly, genital papillae ten pairs (2+1/4+3), spicules 54-64 um long and fused two-thirds, and gubernaculum 32-41 um long. The new taxon is the second species of the genus Distolabrellus and is compared to type specie D. veechi.
NSTL