1977] 
Porter — Mesostenines 
43 
hind corner of pronotum with a strong ridge that extends ventrad 
about 3/4 the distance to prepectal carina; mesopleuron behind 
prepectal carina with coarser and more oblique wrinkling than in 
vallis; front tibia a little more strongly inflated than in vallis; pro- 
podeal spiracle 2.0 as long as wide; propodeal cristae a little more 
narrowly ligulate than in vallis , 1.4 as long as wide at base; apical 
trans-carina completely absent between cristae; dorsal face of pro- 
podeum behind trans-carina with more regularly reticulate wrink- 
ling than in vallis ; apical face of propodeum with coarse reticulate 
wrinkling that becomes transversely biased laterad; first gastric 
tergite more strongly arched in profile than in vallis; postpetiole 
1.6 as wide at apex as long from spiracle to apex. 
FIELD NOTES: Swept from Serjania vines near Rio Grande in 
shade of Celtis lindheimeri , Salix nigra , Fraxinus berlandieriana 
and other trees. 
SPECIFIC NAME: Vallis is the genitive of the Latin noun valles 
or “valley”. 
1 1. Cryptanura lamentaria (Cameron) 
(Fig. 1) 
FEMALE: Color: antenna black with a broad white stripe below 
on scape and a white annulus on flagellomeres 6-11; palpi white 
with apical segment of each blackish; mandible mostly black with 
a large white blotch on base; clypeus white with black on median 
2/3 and pale brown on lateral 1/3 of apical margin as well as 
broadly black on lateral and dorso-lateral margins around and 
mesad of anterior tentorial pits; white on most of face, cheek, and 
a broad orbital ring which is narrowed and briefly interrupted on 
upper 1/4 of temple; head otherwise with black on median half of 
front and vertex and more broadly on occiput and postocciput as 
well as increasingly narrowly black ventrad along occipital carina 
to about dorsal 1/2 of temple; mesosoma black with profuse white 
markings as follows: about apical 3/4 of propleuron; broad front 
margin of pronotum, ending about 4/5 the distance ventrad to 
lower hind corner and also enclosing a pair of small, dorso-lateral 
black spots; all but about median 1/6 of dorsal margin of prono- 
tum very broadly; large median spot on mesoscutum between apices 
of notauli; prescutellar ridge; most of scutellum except for an 
anterio-median black spot; most of post-scutellum; hind rims of 
