162 
Psyche 
[Vol. 94 
3) Anterior surface with fine punctations; 2 to 3 weak to moder- 
ate, transverse rugae superimposed over punctation on poste- 
rior quarter. 
4) Anterior surface with fine punctations; 4 to 5 moderate, trans- 
verse rugae superimposed over punctation on posterior half. 
5) Rugae (usually 6 to 7) superimposed over punctation on 
entire surface. 
PpDor: Dorsum of postpetiolar node viewed dorsally. 
1) Entire surface covered with fine punctations, transverse rugae 
absent. 
2) Anterior surface with fine punctations; 1 to 2 light, transverse 
rugae superimposed over punctation on posterior quarter. 
3) Anterior surface with fine punctations; 3 to 4 light, transverse 
rugae superimposed over punctation on posterior third. 
4) Anterior surface with fine punctations; 5 to 6 moderate, trans- 
verse rugae superimposed over punctation on posterior half. 
5) Rugae (usually 7 to 9) superimposed over punctation on more 
than half of surface. 
PetVent: Lateral profile of anterior, ventral surface of petiolar 
peduncle with the petiole, postpetiole and gaster raised dorsally. 
1) Tooth absent, entire profile smooth (Figs. 1 and 2). 
2) Tooth absent, profile uneven (Figs. 3 and 4). 
3) Tooth present but small or indistinct (Figs. 5 and 6). 
4) Tooth distinct and moderately developed (Figs. 7 and 8). 
5) Tooth well developed and broad (Figs. 9 and 10). 
6) Tooth well developed, elongate and narrow (Figs. 11 and 
12 ). 
Scape: Base of the antennal scape in lateral view with the anten- 
nae parallel to and resting against the dorsal surface of the head. 
1) Rounded; flange absent (Figs. 13 and 14). 
2) Rounded; flange absent dorsally, but indicated laterally (Figs. 
15 and 16). 
3) Rounded; flange present, distinctly broader dorsally than ven- 
trally (Figs. 17 and 18). 
4) Angular; flange present, slightly broader dorsally than ven- 
trally (Figs. 19 and 20). 
5) Angular; flange present, uniform in thickness (Figs. 21 and 
22 ). 
