1977] 
Porter — Mesostenines 
41 
a brown blotch on basal 2/3 above, trochantellus whitish with 
some brown staining, femur yellowish white below and mostly 
brownish above, tibia yellowish white, and tarsus dull yellowish 
with slight dusky staining toward apex on first segment, more 
broadly dusky on second and third segments, and blackish almost 
throughout on fourth and fifth; mid leg similar to fore leg but coxa 
more dully white with some faint dusky staining, trochanter and 
trochantellus more broadly brown above, and tarsus mostly dusky 
to black with yellowish only near base of segments 1-3; hind leg 
with coxa dull white with a broad but diffuse, nearly percurrent, 
moderately pale brownish dorsal stripe and with paler brownish 
staining within and below; trochanter yellowish white with dark 
brown staining dorso-anteriorly and tinged with paler brown be- 
hind; trochantellus similar to trochanter but with darker and more 
extensive brown areas in front and behind; femur dull brownish 
yellow, becoming darker brown above and brighter yellow behind; 
tibia yellow with a little dusky on base; and tarsus yellow with 
dusky only on apical 1/2 of fifth segment; wings hyaline, stigma 
yellowish with dark brown on broad peripheries. 
Length of fore wing: 8.7 mm. Flagellum: scarcely flattened be- 
low on apical 1/3, segments between white annulus and apex av- 
eraging as wide as long; first segment 7.9 as long as deep at apex. 
Temple: 0.3 as long as eye at upper 1/3; very strongly and directly 
receding. Front: horns on a very low common base, large and 
sharply conical; surface practically without wrinkles between level 
of horns and anterior ocellus. Clypeus: nasute; apical margin trun- 
cate. Pronotum: epomia sharp in scrobe but ending above in a 
large tubercle, so that the otherwise gently swollen dorsal margin 
of pronotum has a moderately prominent subconical projection at 
this point. Mesoscutum: shining with numerous medium sized 
punctures that become sparser centrad on lobes and rather broadly, 
more or less transversely wrinkled interiorly and exteriorly along 
notauli and on outer margins of lateral lobes as well as with an 
area of coarse, irregular wrinkling between notauli toward their 
terminus; notauli moderately impressed, reaching about 4/5 the 
length of mesoscutum. Scutellum: weakly convex. Mesopleuron: 
prepectus with a very short ridge opposite lower hind corner of 
pronotum; surface between prepectal carina and speculum mostly 
with strong, nearly regular longitudinal wrinkling which becomes 
weaker, and mingled with large, obscure punctures, on lower half, 
