6 
Psyche 
[ March 
NEW FORMS OF APH^ENOGASTER TREATS FOREL 
FROM THE SOUTHERN UNITED STATES 
(HYM.: FORMICHUE) 
By George C. and Esther W. Wheeler 
University of North Dakota 
In describing new forms of Aphsenog aster treatse Forel, 
we have found the original specific description (1886) too 
brief. It seems desirable, therefore, to give here a few 
additional characteristics which we have found useful in 
comparisons. 
Worker. Length of head exclusive of mandibles IV2 
times its greatest width. Scape IV5 times the length of 
the head; lobe % to 1/3 the length of the scape. The long 
flange bordering the lobe posteriorly 1 is low and the 
anterior surface of the lobe is convex except that the distal 
portion has a small concavity between the posterior and 
anterior flanges. The short anterior flange arising at an 
acute angle from the posterior one disappears into the 
anterior convexity. (See Fig. la and b.) The base of the 
epinotum is twice the declivity. 
Head coarsely and longitudinally rugoso-reticulate with 
surface between the reticulations finely punctate. Frontal 
area with a median longitudinal ridge. Transverse stria- 
tions on the dorsal surface of the epinotum commence at 
the base and merge into reticulations or indistinct stria- 
tions in the region between the spines. Posterior surfaces 
of nodes densely and irregularly punctate. Mandibles hairy. 
Thorax dark ferrugineous ; head and abdomen above 
fusco-ferrugineous. 
We have been unable to procure a female of A. treatse. 
Tn this paper the anterior part of the lobe is that surface which 
faces forward when the scape is appressed to its groove in the head; 
the posterior, the area concealed thus. 
