264 
Psyche 
[December 
Postpetiolar node densely reticulate-punctulate, opaque 45. 
45. Preapical armament of mandible consists of 2 close-set preapical 
teeth, of which the second is much the longer, followed closely 
basad by 1 or 2 denticles (Fig. 11) (Colombia) 
connectens Kempf 
Preapical armament otherwise; consisting either of three small 
subequal teeth, or of 4-9 minute teeth and/or denticles (Fig. 10) 
46 . 
46. Antennal scape 0.33 mm or more long; larger, dark-colored 
species (Jamaica) jamaicensis Brown 
Antennal scape < 0.33 mm long 47. 
47. Mandibles short and thick (MI < 56) ; robust species, worker 
HL mostly > 0.48 mm 48. 
Mandibles longer and slender (MI 56 or more) ; smaller species, 
worker HL mostly 0.48 or less (Fig. 10) 49. 
48. Mandible short (MI 48 in unique holotype), with exactly 3 
small preapical teeth ; ground pilosity of head nearly or quite 
obsolete ; pronotum markedly flattened (Costa Rica) 
trieces Brown 
Mandible relatively longer (MI ca. 53-54), with > 3 preapical 
teeth and/or denticles; ground pilosity abundant and conspicuous 
on head ; promesonotum strongly rounded, not depressed ( Mexico 
to s. Brazil) subedentata Mayr 
49. Mandibles very long and slender (MI > 70), bowed outward 
(Trinidad to n. Argentina) denticulata Mayr 
Mandibles not so long (MI < 70), their shafts approximately 
straight (Fig. 10) 50. 
50. Ventral spongiform appendages of postpetiole small but distinctly 
developed (side view) ; gastric dorsum of worker predominantly 
smooth and shining (when clean!), at most with a few basal 
longitudinal costulae, but female gaster commonly shagreened 
above (Caribbean countries) gundlachi (Roger) 
Ventral spongiform appendages of postpetiole obsolete; gastric 
dorsum of both worker and female with fine, mostly opaque 
reticulation (Brazil, Bolivia, Caribbean countries) 
eggersi Emery 
Glossary 
Alitrunk: The second tagma of the body in Hymenoptera, incor- 
porating the thorax and the closely fused propodeum (first true abdom- 
inal segment). 
