52 
Psyche 
[Vol. 94 
Head as long as broad; interocellar distance less than ocellocular 
distance, slightly greater than ocelloccipital distance; length of 
median flagellomeres one and one-half times width, clypeus slightly 
convex in profile, margin crenulate; mandible bidentate, upper 
tooth slightly acute; labrum slightly convex on apical margin, sur- 
face impunctate medially, sparsely haired; mouthparts in repose 
reaching past base of forelegs; scutellum slightly convex; metano- 
tum oblique in profile; basal area of propodeum sloping, with fine 
longitudinal carinules; forebasitarsus linear, without acute apical 
angle; foretarsomere II not greatly expanded, longer than wide; 
tergum VI basolaterally with long, narrow, poorly sclerotized lobe 
hidden in normal view, apical margin with slight median lobe, lat- 
eral corner rounded; tergum VI hidden; sternum I with margin 
roundly convex (Fig. 1), surface under margin covered with dense, 
velvety pubescence; sternum II depressed medially, covered with 
dense, velvety pubescence where normally covered by sternum I, 
apical margin of sternum II narrowly, shallowly incurved laterally, 
widely, shallowly incurved medially, margin with long fringe of 
medially-directed hair; sternum II depressed, laterally bordered by 
narrow hyaline flange, apical margin narrowly hyaline with long 
fringe of medially curving hair interior to shallow lateral notch; disk 
of sternum IV sparsely pubescent, margin broadly convex with 
sharp lateral notch, submedially with small tuft of hair directed 
obliquely toward middle; sternum V as in Fig. 2; sternum VI as in 
Fig. 3; sternum VIII rounded apically; genitalia as in Fig. 4. 
Female. Length, 4.5-5 mm; forewing length, 2.5-3 mm. Color as 
in male except: posterior margins of terga II, III, sometimes I, sterna 
I-V brown; mandible subapically reddish. Pubescence white; dense 
on lower paraocular area, dorsal pronotal angle, tip of pronotal 
lobe, posterior half of scutellum, metanotum medially, propodeum 
dorsolaterally; apical fasciae present on terga I— III, fascia on tergum 
I thick, broadly interrupted, becoming progressively thinner, less 
interrupted on terga II, III until thin, complete, sometimes indistinct 
on tergum IV; scopa white. 
Head slightly longer than broad; distances on vertex as in male; 
length of flagellomere V less than width, flagellomeres VI-IX as long 
as wide; clypeus slightly convex in lateral view, margin slightly 
crenulate; mandible slender, not elongate, tridentate, distance 
between apices of lower and middle teeth slightly less than distance 
between apices of middle and upper teeth, acetabular carina reach- 
ing apical half of mandible, acetabular interspace finely, densely 
