Head: Black, sometimes reddish on the lower facial and parafacial areas. Pollen silvery, but with distinct pale-yellow cast on parafrontal, parafacial, occipital orbit, and anterior part of gena. Frontals 9-11, moderately divergent below, reaching middle of sccond antennal segment. Two or 3 hair-like interfrontals on upper part. Ocellars moderate. Preverticals strong. Outer verticals hair-like. Orbitals nil. Parafacial hairs irregularly scattered, a little stronger below, but not bristly. Occipital fringe of black bristles and hairs, a few of the latter arising in the intrapostocular area (occipital orbit). Behind the fringe an irregular second and sometimes a partial third row of black hairs. Beard white, extending a little in front of metacephalic suture. Front ¼ head width, (average of 5 specimens, 0.256). Gena ⅓ eve height. Antenna ⅔ length of face, black, apex of first and second and base of third segments reddish. Second segment ½ length of third. Arista moderately plumose on basal ⅗ Palpi and proboscis black.