1977] 
Porter — Mesostenines 
59 
with a ventrally interrupted white band on flagellomeres 4 (api- 
cally) to 9 and sometimes slightly onto base of 10; head black with 
palpi brownish white, mandible brownish white with dark brown 
on apical 1/4, brownish white on mandibular condyle, dull brown 
on apical 1 / 3 of clypeus, at times with a brownish median spot on 
face somewhat below antennal sockets, and with white broadly on 
most of frontal orbit; propleuron black; pronotum black with a 
broad white band on most of front margin except for hind corners, 
a large, broadly triangular white mark on median 1/3 of dorsal 
margin which is contiguous medially with white band on front 
margin and which encloses a more or less well developed central 
brown area, and with a little pale brown on upper hind corner; 
thoracic dorsum black with tegula white, a pair of short median 
white stripes on mesoscutum in apical 1 / 3 of notauli, scutellum 
shining ferruginous with a yellowish tinge, postscutellum yellow- 
ish to ferruginous white, and hind rim of meso and metanotal 
axillary troughs narrowly whitish to ferruginous; mesopleuron and 
mesosternum black with ferruginous on about ventro-posterior 2/3 
of mesepisternum, narrowly on adjacent mesosternum, and on 
most of mesepimeron as well as with white on much of subalarum 
and toward dorsum of mesepimeron; mesosoma otherwise uni- 
formly ferruginous; gaster ferruginous with a trace of faint dusky 
staining on the more apical tergites and with a very large medio- 
apical white blotch on tergite 7 and a similar but smaller white area 
on 8; legs ferruginous to stramineous with blackish anterior and 
posterior staining on hind trochanter and with 5th tarsomeres 
dusky; wings hyaline with fore wing faintly brown tinged and 
stigma rather pale brown. 
Length of fore wing: 4. 6-4. 8 mm. First flagellomere: 5. 5-6.0 as 
long as deep at apex. Clypeus: moderately convex in profile. Malar 
space: 0.62-0.64 as long as basal width of mandible. Temple: 0.19- 
0.22 as long as eye at upper 1/3. Pronotum: scrobe extensively 
wrinkled. Mesoscutum: finely and densely punctate with a broad 
band of delicate transverse wrinkling along anterior 2/3 of notauli, 
mostly internally, and with stronger longitudinal wrinkling between 
notauli on about their apical 1/3. Mesopleuron: in large part with 
strong wrinkling that is more or less regularly longitudinal above 
and more irregular below or which sometimes is longitudinally biased 
throughout. Lower metapleuron: with strong longitudinal wrinkling 
that becomes very irregular on dorso-posterior 1/2; juxta-coxal 
