200 
Psyche 
[Vol. 89 
One alate female was dissected. She had 6 ovarioles, a compara- 
tively large poison gland, a Dufour’s gland of ordinary size for most 
independent Leptothorax species, and an empty receptable also of 
ordinary size and shape. 
Allotype male: total length 3.44 mm, head length 0.63 (excluding 
mandibles), head width 0.65 (behind eyes), scape length 0.26, great- 
est diameter of eye 0.28, thorax length 1.21, width 0.70, length of 
petiole 0.32, width 0.25, length of postpetiole 0.24, width 0.29, 
length of forewing 3.09, hind wing 2.04, length of hind femur 0.79, 
hind tibia 0.55, length of gaster ca. 1.05 mm. Paratype males 
(selected measures of two males): total length 3.46/3.58 mm, head 
length 0.60/0.65 mm, thorax length 1.22/ 1.28 mm, thorax width 
0.67/0.70 mm. Habitus in general like that of other males of the 
subgenus Leptothorax. Mandibles without teeth, masticatory bor- 
der rounded or straight. Maxillary palps 5-segmented, labial palps 
3-segmented. Antennae 12-jointed, without club. Clypeus promi- 
nent, vaulted, its anterior border straight. Eyes and the ocelli as 
large as usual for the subgenus Leptothorax. 
Thorax with Mayrian furrows. Epinotum without distinct spines, 
but their place marked by two low ridges (fig. 3). 
Petiole not pedunculated, with nearly straight anterior and poste- 
rior faces of the rounded node. A small ventral spine is present, with 
two diverging ventrolateral edges, as in the female. Postpetiole sim- 
ilar to that of the female, except that the anterior face is less steep 
and more convex, and the ventral spine or transverse edge is smaller 
(fig- 3). 
Male genitalia: see fig. 3. 
Head, sides of pronotum and of petiole coarse, dorsal and 
extended lateral parts of thorax, node of petiole, postpetiole and 
gaster smooth and shining. Body moderately covered with tapering, 
curved hairs of variable length, in the thorax reaching 0.10 mm, on 
the petiolar node 0.14 mm. Head and particularly the mandibles 
with abundant, long, tapering hairs. Antennae and legs with abun- 
dant, appressed or suberect hairs. 
Coloration: whole body black or blackish-brown with the scutel- 
lum, the metanotum, sometimes the pronotum, the mandibles and 
legs somewhat lighter brown. In most males the scutellum differs so 
markedly in coloration from the surrounding parts of the thorax 
that this was the most valuable character for identifying the new 
species’ males when they were still alive in the nest. 
