1977] 
Porter — Mesostenines 
39 
FEMALE: Color: antenna black with white annulus on flagello- 
meres 5 - 12 ; palpi whitish; mandible white with black on apical 1/3 
and narrowly on dorsal and ventral margins except near base; head 
white with black as follows: broad, irregular mark extending from 
a little above anterior tentorial pit ventrad to mandibular condyle; 
face for a short distance below and between antennal sockets; lower 
and inner margins of antennal sockets; median half of face and ver- 
tex; occiput much more broadly; most of postocciput; about upper 
1/4 of temple very broadly, briefly interrupting white orbital ring; 
and rest of temple very narrowly along occipital carina; propleuron 
white with black on most of basal 1 / 4 ; pronotum black with a 
broad white band covering most of front margin, except for lower 
hind corner and a short break dorso-medially, and with white 
broadly on the swollen humeral margins; thoracic dorsum black 
with white on prescutellar ridge, broad anterio-lateral margins and 
most of apical 1/2 of scutellum, most of postscutellum, and on 
hind margins of meso and metanotal axillary troughs; tegula white; 
mesopleuron black on most of prepectus and on most of upper 1 / 3 
except for the white subalarum, otherwise wholly white, becoming 
slightly brownish ventrad, on mesepisternum and mesepimeron; 
mesosternum black on prepectus but otherwise slightly brownish 
white; most of dorsal metapleuron white; lower metapleuron white 
with a pale brownish tinge and briefly stained with darker brown 
on apex; propodeum white to brownish white with black on a 
broad, irregular percurrent median longitudinal band which is 
widest along basal trans-carina and becomes narrower rearward, 
especially on apical face, as well as at least narrowly blackish 
throughout along basal carina, blackish around spiracle, and with 
pale brown staining on much of lateral face between spiracle and 
crista; first gastric tergite yellowish white with dark brown above 
on much of apical half of petiole and on most of basal 2/3 of post- 
petiole as well as a little brownish along ventro-lateral carina; sec- 
ond tergite black with yellowish white on apical 1/3, on very broad 
lateral margins, and on entire thyridial areas, between which the 
ground color becomes brownish yellow basad; third tergite black 
with yellowish white on apical 1/2 and on very broad lateral mar- 
gins; fourth and fifth similar but even more broadly yellowish with 
some darker staining in the yellow zones; sixth and seventh yellow- 
ish with some darker staining; and eighth dark brown with apex 
narrowly yellow; fore leg with coxa white, trochanter whitish with 
