172 
Psyche 
[June-September 
antennal club. Width of flagellar segments increases uniformly from 
first (0.13, 0.12) to last (0.18, 0.20). 
Trunk in full dorsal view (fig. 1) with complete, fine, immobile, 
promesonotal suture; mesonotum bisected at about 2/3 of length 
by a faint shallow sulcus (probable remnant of scutoscutellar suture) 
which drops out at lateral margins; metanoturn reduced to a sharp 
groove between mesonotum and propodeuin. Propodeal spines 
robust, acute, their bases widely separated by a broad concavity. 
Propodeal spiracles prominent; their orifices circular, facing pos- 
terolaterad. 
From the side (figs. 2, 3) dorsal profile convex; mesonotum set off 
by grooves, its outline higher and more convex than pronotum and 
propodeum. Distinct sutures separate pronotum and mesonotum 
from mesopleura; metapleura delimited by weak sulci scarcely 
distinguishable from the sculpture, expecially in areas anterior to 
the spiracle. Metapleural gland bulla well developed. Inferior pro- 
podeal plates broad, blunt. Dorsal face of propodeum curves 
broadly into declivous face. 
Petiole robust (figs. 1-3), with broadly conical anterior peduncle 
and weakly differentiated posterior peduncle. Venter seen from 
below with 3 longitudinal ridges running from short acute tooth to 
posterior peduncle. Node in side view with flat anterior face (except 
for 2 low undulations) joining anterior peduncle at about a 135° 
angle, meeting dorsal face of node at an acute angle; dorsal face flat, 
broadly curving into short posterior face. Outline of node from 
above ovoid, slightly wider than long, widest just caudad of 
midlength. Anterior edge sharp (with low upturned burr in second 
specimen), gradually softening to broadly rounded along sides. 
Postpetiole large, inflated; connection with gaster broad. In 
lateral view, dorsum strongly and evenly convex; venter much 
shorter than dorsum, profile undulate, anterior lip broadly rounded. 
From directly above (not as in fig. 1) node subtrapezoidal; posterior 
edge a broad convex arc somewhat flattened mesad, posterior 
corners broadly rounded, sides flat, tapered to corners of weakly 
concave anterior edge. 
Gaster greatly enlarged, subglobose, heavily sclerotized, slightly 
longer than wide and slightly wider than deep; widest at midlength. 
Sclerites not fused, but rigidly articulated. Measured from side 
along axis, first tergum covers 90% of length of gaster; first sternum 
53%. 
