1983] 
Willey & Brown — Genus Myopias 
283 
Labrum without a median tooth, but each of its two lobes bears a 
delicate, upturned apical tooth. Palpi segmented 3,3. 
Trunk compact; aside from the rounded declivities of pronotum 
and propodeum, the dorsal profile in side view is only weakly con- 
vex, with moderate interruptions at premesonotal suture (movable) 
and metanotal groove; latter is moderately wide and distinctly, but 
not very strongly, impressed, and it divides the trunk into approxi- 
mately equal anterior (promesonotal) and posterior (propodeal) 
halves. Dorsum of propodeum gently convex, about twice as long as 
mesonotum; declivity of propodeum steeply sloping, its outline con- 
vex in side view, but the surface feebly concave, and weakly sub- 
marginate above and laterally, as seen from above. 
Petiolar node short and high, highest and widest behind at nar- 
rowly rounded summit, after which the posterior face drops off 
sharply and almost vertically. Anterior face nearly as steeply sloping 
upward, shorter, meeting sloping dorsal face at an obtusely rounded 
angle. Sternal keel prominent, with a thick, obliquely truncate ante- 
rior process, pointed behind, then diminishing convexly caudad (see 
fig. 21). In holotype and two of the paratypes, the posterior convex 
portion bears an additional low point or tubercle, but shape of keel 
is variable in any case. 
Caster robust, distinctly constricted after first segment; segment 
II about as high as I, and only very slightly wider. Sting long, 
sharp, upcurved, capable of at least 0.4 mm extension. Seen from 
above, anterior border of gaster 1 transverse, straight. 
Body smooth and polished, with well-spaced, small (mostly 0.01 
mm diameter or less), piligerous punctures, most numerous on dor- 
sum of head and gaster. Antennae, frontal lobes, tibiae and tarsi 
densely and finely punctulate. Bullae of metapleural glands obs- 
curely striate. 
Longer pilosity abundant on body, sparse on antennae and man- 
dibles, and almost lacking on legs; mostly 0.03 to about 0.20 mm 
long, appressed to erect, but mainly decumbent to suberect on 
propodeum, node, and first two gastric segments; longest on clypeal 
lobe, propodeum, node and gastric apex. Pubescence mostly 
appressed to decumbent, inconspicuous and mesally inclined on 
anterior half of head, more abundant and conspicuous on antennae 
and legs. 
Color dark yellowish brown or orange brown; legs, mandibles, 
antennal scapes slightly more yellowish. 
