1983] 
Willey & Brown — Genus Myopias 
259 
small teeth at apex, 2 large blunt teeth basad of these, and an 
obtusely rounded basal angle. Antennal scapes overreaching poste- 
rior margin of head. Trunk compact, promesonotum and propo- 
deum subequal in length, forming separate weak convexities 
meeting at a distinct and depressed metanotal groove. Petiolar node 
massive, subcuboidal, broader than long. Anterior face of gastric 
segment I weakly concave as seen from dorsal view. Integument 
prevailingly smooth and shining, but with abundant, coarse piliger- 
ous foveolae, sometimes contiguous on head, and tending to 
become elongate on first two gastric terga. Color brownish red. 
Worker, holotype: TL 7.1, HL 1.25, HW 1.31 (Cl 105), ML 0.71 
(Ml 57), MLO 1.26, SL 1.1 1 (SI 85), EL 0.33, WL 2.16, hind femur 
L 1.25, hind tibia L 1.20 mm. 
Worker, paratypes (n = 6 of 42 from 4 colonies, including largest 
and smallest specimens): TL 6.5-S.6, HL 1.17-1.43, HW 1.21-1.47 
(Cl 100-105), ML 0.67-0.81 (Ml 53-66), SL 1.00-1.24 (SI 83-88), 
EL 0.30-0.40, WL 2.00-2.46 mm. 
Head broader than long, with sides convex, broadest immediately 
behind eyes, and narrowed slightly in front of eyes; posterior border 
broadly and shallowly concave. (The head can be lengthened 
slightly by tilting it forward from the full-face plane; this has the 
effect of foreshortening the mandibles and deepening the concavity 
of the posterior margin, and of course decreasing CL) Eyes large 
and convex, with about 18-19 ommatidia in the longest diagonal 
row, each eye occupying nearly 3/10 of the length of its side of the 
head, situated about 2/3 its own length from mandibular insertion. 
Clypeal lobe distinctly projecting but short, rectangular, more 
than twice as broad as long, with parallel sides, a nearly straight 
anterior margin, and subrectangular free corners (in Wau Creek 
series, anterior margin weakly convex, free corners more rounded). 
Labrum with the transverse ridge feebly sinuate in front view, lack- 
ing a median tubercle; labral lobes each with a small upturned apical 
tooth. Maxillary palpi each 3-merous; basal segment broadest, with 
one subapical lateral sensillum; apical segment with a single apical 
sensillum. Labial palpi each with 3 subequal segments; basal seg- 
ment with 2 adjacent submedian sensilla; II with one subapical lat- 
eral sensillum; III with the same, plus 2 apical sensilla. 
Mandibles stout, gently bowed, each with two small teeth at apex, 
a blunt tooth near apical quarter of ML, a large, blunt submedian 
