258 
Psyche 
[June-September 
plate (Figs. 52, 59); much of the shape of the sting (Figs. 55, 56). The 
gonostyli are much like those of Leptothorax (Fig. 53), but not as 
long and narrow, and they lack the companion seta. The sting base 
and furcula have characteristics of those of Liomyrmex cf. aurianus 
(Figs. 69, 70). 
In spite of its similarities with the Tetramoriini, E. mocquerysi 
lacks the dorsal flange on the end of the sting and the character- 
istically stubby gonostyli of that tribe. On the basis of the flange 
character and other external characters Bolton (1976) removed 
Eutetramorium from its traditional association with the Tetra- 
moriini. He prefers to place it in the Myrmicini, but as an alternative 
hypothesis, based admittedly on one character system, I would 
suggest a position nearer Leptothorax and related genera. 
OXYOPOMYRMEX 
Species examined: O. tuneticus, 1 worker; O. tuneticus var. thoraci- 
cus, 1 worker. 
Spiracular plate: Body subrectangular, with straight anterior 
edge, slightly concave posterior edge and convex dorsal and ventral 
edges. Anterior apodeme forms a square anteroventral corner, then 
a thin margin along anterior edge to dorsad of body of plate; medial 
connection membranous. Large V-shaped dorsal notch present; no 
distinct posteroventral tubercle or posterodorsal lobe. 
Quadrate plate: Subtriangular, both body and apodeme much 
narrowed at base. Dorsal edge straight, anterodorsal corner broadly 
rounded. Anterior edge poorly sclerotized, expecially dorsad. 
Anal plate: Weakly sclerotized, longer than wide, with 4 long 
setae on terminal edge in O. tuneticus, 2 setae in O. t. var. 
thoracicus. 
Oblong plate: Dorsal ridge and body of posterior arm long and 
narrow, uniform in width, without ventral ridge. Anterior apodeme 
very long and slender. Ventral arm tapered and subtruncate distally; 
fulcral arm slender, weak, diffuse dorsad, forming acute angle with 
posterior arm. 
Gonostylus: In O. t. thoracicus, narrow from side view, with no 
indication of segmentation; 17-20 setae scattered more or less 
evenly along distal 2/3 of ventrolateral surface. Dorsoterminal 
chaeta, companion seta and terminal membrane present. No basi- 
conic sensilla. Gonostyli of O. tuneticus lost in preparation. 
