38 
Psyche 
[March 
Species-level Taxonomy 
i. Pristomyrmex foveolatus new species 
(Figs, i, 2) 
Holotype worker. HL 0.84 mm; HW 0.92 mm; Cl no; SL 0.75 
mm; SI 81 ; PW 0.55 mm; WL 0.79 mm; Propodeal Spine L 0.35 
mm; Petiole L 0.30 mm; Postpetiole Height 0.30 mm. General 
features as in figures 1 and 2. Mandibles with two adjacent strong 
acute apical teeth and a truncated basal one, separated by a broad, 
shallowly concave diastema. Clypeus with a median longitudinal 
Carina, its anterior border with 5 obtuse denticles, the median and 
outer lateral ones largest. Antennal scrobes shallow, their ventral 
borders obscure. Occipital area of cranium enclosed dorsally and 
laterally by a fine arched carina. Scapes barely attaining level of 
occipital border when lying in the antennal scrobes, with the head 
viewed in HL measuring position (see p. 36). Funiculus with a 
3-segmented club, proportions of its segments as in Figure 1. Eyes 
moderately large, maximum diameter 0.12 mm, their anterior edges 
almost twice this distance from the anterior genal borders. Mesosomal 
profile as in Figure 2. Pronotum truncated anteriorly, its inferior 
angles edentate. Humeri each with a small acute tooth about 0.05 
mm long, inclined dorsolaterally to project beyond the main lateral 
outline of the pronotum, when viewed from above. Posterolateral 
corners of pronotal dorsum forming blunt angles of about 90 degrees 
in dorsal view. Anterodorsal edge of mesepisternum extended anterior- 
ly as a strong, moderately acute process which partially overlaps the 
fore-coxa. Propodeal spines long, almost straight, each diverging from 
the dorsal midline at an angle of about 20 degrees. Metapleural spines 
small, moderately acute, each about 0.07 mm long, slightly wider at 
base. Petiolar and postpetiolar profiles as in Figure 2. Petiole slightly 
narrower than postpetiole when viewed from above, its crest transverse 
in posterior view and feebly convex. 
Mandibles generally smooth, with several longitudinal ribs. 
Clypeus strongly shining. Head polished and reflective, with numer- 
ous large shallow subcircular umbilicate foveae, averaging about 
0.06 mm in diameter, largest on the posterior genal surfaces, lacking 
on a small smooth area between eye and antennal socket on each side, 
generally separated by distances averaging about one-third their mean 
diameter. Postgenae obscurely foveolate. Antennal scrobes smooth, 
with an almost effaced rugulosity and several arched transverse striae 
anteriorly. Pronotal dorsum obscurely foveolate, with several median 
longitudinal costulae. Posteriorly these meet a transverse carina which 
apparently represents the mesonotum. Propodeal dorsum smooth, 
