30 
Psyche 
[March 
prothorax. In addition, the combined presence of all of the follow- 
ing characters serves to distinguish Glypholoma from other Omali- 
inae. (Some other genera share one or a few of these characters with 
Glypholoma, but no other genus examined possesses all of these 
characters as Glypholoma does.) 
1 . Gular sutures widely separated, minimum separation equal to 
0.12-0.18 times the head width. 
2. Prothoracic pleural-sternal articulation present. 
3. Procoxa with mesal articulating groove. 
4. Mesosternal procoxal cavities long, 0.40-0.75 times the total 
mesosternal length. 
5. Hind femur relatively short, ranging from 0.92-1.05 times 
hind coxal length. 
6. Deflexed lateral portion of elytron short, only 0.64-0.67 
times as long as total length of elytron (measured in lateral view). 
7. Humeral margin of elytron serrulate. 
8. Median lobe of aedeagus with membranous part of basal 
bulb allowing dorsal-ventral instead of lateral-lateral contraction 
and expansion. 
9. Epistomal suture present and complete (although with or 
without median stem). 
Description: Ovoid (narrower posteriorly) to more or less oblong 
in dorsal view, slightly to strongly convex dorsally in cross section. 
Sparsely pubescent to nearly glabrous on dorsal surface, widely 
spaced macrosetae on alternate intervals of elytra in a fairly 
characteristic pattern (pattern varies some among the species; see 
figs. 26, 29). Microsculpture lacking on dorsal surface of head, 
pronotum, and elytra. Length 2. 1-3.5 mm, width 1.0- 1.5 mm. 
Head capsule about as in fig. 58, lacking postocular ridge, 
temples, and nuchal constriction except in temporale, which has 
temples and a lateral nuchal constriction (fig. 57). Head about 1.8 
times as wide as long, about 0.58 times as long as pronotal length, 
with pair of distinct ocelli on dorsal surface (see especially fig. 6); no 
anteocellar grooves or pits. Epistomal suture with internal rein- 
forcing ridge present, angulate or arcuate, with or without median 
stem. Antennae usually about 1 to 1.5 times as long as head width, 
varying from filiform ( tenuicorne , about 2.2 times head width) to 
having a moderately developed club of about three to five segments; 
basal five to eight antennal segments glabrous except for a few 
