1951] 
Creighton — Arizona Ants 
97 
largely or entirely confined to the rear edge of the segment. 
Erect hairs on the fore coxae longer than those anywhere 
else on the body. Femora with short, fine, erect hairs on 
their flexor surfaces, the hairs appressed on the lateral 
and extensor surfaces. Tibiae with the hairs appressed. 
Tarsi with very abundant, fine hairs which are appressed 
except on the flexor surface, where they are semi-erect. 
Antennal scapes with very fine appressed hairs. Funiculi 
with semi-erect hairs which become finer on the last four 
segments and form pubescence on the terminal segment. 
The entire insect without pubescence elsewhere. 
Head, thorax, gaster and antennae an even, rich, reddish 
yellow. The legs clear yellow. Wings hyaline with iridescent 
reflections. The veins clear yellow, the stigma brown. Pos- 
terior edge of the wing evenly fringed with short, fine 
hairs. 
Male: length; head (exclusive of the mandibles) 1 mm.; 
thorax 2.25 mm.; total length 5.5-6 mm. 
Mandibles smooth, moderately shining, with numerous 
fine punctures. Clypeus and frontal lobes a little less shin- 
ing than the mandibles, the punctures less distinct and 
tending to form longitudinal rows. Front and occiput feebly 
shining with a fine but dense reticulate sculpture over most 
of the surface except between the two lateral ocelli, where 
prominent transverse rugae are present. Entire thorax 
smooth and shining, largely without sculpture. Posterior 
half of the scutellum and the entire metanotum with a deli- 
cate, reticulate sculpture which dulls the surface to some 
extent. Posterior half of the epinotum rugose and coria- 
ceous both on the basal face and on the sides. The suture 
separating the mesothoracic sternite from the episternite 
and that lying between the epinotum and the metathoracic 
epimeron crossed by coarse, widely separated rugae. A few 
of these rugae run out onto the surface of the adjacent 
segments. Petiole feebly shining, the upper surface evenly 
covered with fine punctures, the posterior face of the node 
and the ventral surface with three or four feeble longitud- 
inal rugae. Postpetiole and gaster more strongly shining 
than the petiole, the surface covered with extremely delicate 
