268 
Psyche 
[Vol. 90 
personal communication). The species is named for the late Dr. 
James W. Chapman, who collected many Myopias series in the 
Philippines. 
Myopias densesticta, new species 
(Figs. 11,29) 
Diagnosis, worker and queen: A member of the M. tenuis group, 
similar to M. chapmani, but with much more distinct and abundant 
foveolate sculpture and a shorter, wider median clypeal lobe and 
shorter antennae. Also, the trunk is not deeply divided at the 
metanotal groove, the petiolar node is more massive, and the gaster 
is gently tapered, not sharply constricted, behind the first segment. 
Worker, holotype: TL 5.6, HL 1.03, HW 0.97 (Cl 94), ML 0.55 
(MI 53), MLO 0.82, SL 0.85 (SI 88), EL 0.09, WL 1 .62, hind femur 
L 0.87, hind tibia L 0.83 mm. 
Worker, paratypes (n = 3 of 9 from two colonies, including largest 
and smallest, the holotype): TL 5.6-5.7, HL 1.03-1.07, HW 
0.97-1.03 (Cl 94-97), ML 0.55-0.56 (MI 51-54), MLO 0.82-0.83, 
SL 0.85-0.86 (SI 83-88), EL 0.09-0.1 1, WL 1.62-1.71, hind femur L 
0.87-0.89, hind tibia L 0.83-0.84 mm. 
In overall size, proportions of head, and mandibles, this species is 
very similar to M. chapmani, but the sides of the head are a trifle 
more convex, and the basal angle of the mandible is a little less 
distinct; also the following, more definite differences from M. 
chapmani: 
(1) Antennae shorter; scapes overreach posterior border when held 
straight back by only a slight amount, less than their apical width. 
Segments II through VIII of funiculus wider than long; I (pedicel) 
more than twice as long as II. 
(2) Median clypeal lobe shorter, wider (CLL 0.08-0.10, CLW 
0.16-0.17 mm), with sharply angular free corners terminating the 
divergent carinae that form the lateral edges of the lobe. 
(3) Promesonotum shorter than propodeum; propodeal dorsum 
about twice as long as mesonotum, and nearly on the same level; 
both only weakly convex and meeting at a distinct but not deeply 
impressed metanotal groove, so that the side-view dorsal profile is a 
nearly smooth, gently convex outline from top of front pronotal 
incline to top of propodeal declivity. 
(4) Petiolar node more massive and more nearly cuboidal, less no- 
