1977] 
Porter — Mesostenines 
71 
Length of fore wing: 4. 5-5. 8 mm. First flagellomere: 6. 1-7.5 as 
long as deep at apex. Clypeus: strongly and asymmetrically convex 
with apical face distinctly shorter and more strongly declivous than 
basal. Malar space: 0.66 as long as basal width of mandible. Tem- 
ple: 0.36 as long as eye at upper 1/3; moderately and directly to a 
little convexly receding; dully to rather strongly shining with vari- 
ably developed fine micro-reticulation and more or less numerous 
small, obscure punctures. Pronotum: humeral margin scarcely 
swollen; epomia more or less well defined in scrobe among some 
other variably developed irregular wrinkles. Mesoscutum: notauli 
weakly defined on about basal 1/3 of mesoscutum and traceable 
almost to apex as a wide band of oblique rugosities; surface 
mat with fine micro-reticulation and stronger wrinkling along no- 
tauli and rearward on central lobe as well as with numerous, me- 
dium sized, shallow and obscure, mostly subadjacent or sparser 
punctures. Mesopleuron: mostly mat and rather finely reticulately 
wrinkled but with some discrete punctures on prepectus and on 
dorsal 1/3; speculum smooth and polished. Lower metapleuron: 
with rather strong reticulate wrinkling that sometimes becomes 
more regularly oblique ventro-posteriad. Wing venation: areolet 
0.68-0.76 as high as part of second recurrent above bulla, first 
intercubitus reclivous; discoidella well developed, upper part of 
nervellus 1.5- 1.8 as long as lower; brachiella well developed. Fore 
tibia: only slightly swollen. Propodeum: median part of basal 
groove with some sharp longitudinal ridges; spiracle 1.2 as long 
as wide; cristae small but strongly projecting subligulate tubercles, 
apical carina otherwise lacking. First gastric segment: postpetiole 
1.3 as wide apically as long from spiracle to apex, its surface a little 
dully shining with well defined micro-reticulation; dorso-lateral ca- 
rina traceable throughout and mostly sharp. Second gastric tergite: 
thyridium transverse; surface mat and finely reticulate with small, 
sparse, obscure punctures emitting short, widely spaced setae. Ovi- 
positor: sheathed portion 0.34 as long as fore wing; tip 0.26 as high 
at nodus as long from nodus to apex and directly tapering between 
nodus and apex. 
MALE: Unknown. 
SPECIMENS EXAMINED: 4 females, USA {Texas: Hidalgo County, 
Valley Botanical Garden at McAllen, 12-27 I ’74, C. C. Porter; 
Bentsen Rio Grande Valley State Park, 19 I ’76, C. C. Porter); 
MEXICO ( Jalisco : Guadalajara, 17 VII ’51, H. E. Evans). (Porter, 
Townes). 
