1969] 
Porter — Bolivian T rachysphyrus 
363 
Figure 1. Trachysphyrus praeclarus n. sp. Lateral view of apex of 
ovipositor. 
to in great part irregularly somewhat more widely spaced, becoming 
largest, densest, and with some tendency to longitudinal slurring on 
central lobe. Mesopleuron: speculum mostly smooth and polished, 
surface otherwise with uniform, coarse reticulate wrinkling. Meta- 
pleuron: with very coarse reticulate wrinkling. Wing-venation: 
areolet very large and rather high, intercubiti weakly convergent 
above to practically parallel, 2nd abscissa of radius 1. 0-1.2 as long 
as 1 st intercubitus; 2nd recurrent near middle of areolet; disco- 
cubitus very gently arched and sometimes slightly sinuate, with or 
without a stump of a ramellus; nervulus about 1/6- 1/3 its length 
postfurcal; nervellus broken a little below middle, upper part about 
1. 1 as long as lower. Propodeum: rather short and high, basal face 
arched and considerably sloping behind, apical face discrete and al- 
most vertically declivous and only about 2/3 as long as basal face; 
area basalis truncate behind; basal trans-carina definite but a little 
irregular medially, becoming obsolete laterad of areola and sharp 
again between spiracle and base; apical trans-carina practically absent 
except for the rather large, prominently projecting, bluntly cuneate 
cristae; median longitudinal carinae vague, areola hexagonal and a 
little wider than long, anteriorly elongate and strongly narrowed; 
lateral longitudinal carinae vague and irregular, a slight denticle at 
their juncture with basal trans-carina; surface with coarse reticulate 
wrinkling that grades basad of basal trans-carina into finer sculpture 
with some discrete intercalated punctures. 1st gastric segment: post- 
petiole 1.5 as wide at apex as long from spiracle to apex; dorsal 
carinae only very faintly suggested for a short distance above and a 
little in front of spiracle, scarcely defining a median elevation ; surface 
of postpetiole smooth and polished with very faint micro-shagreening 
and, especially laterally and apically, with rather few, small to tiny, 
inconspicuous, widely scattered punctures which emit short, well 
separated setae. 2 nd gastric tergite: smooth and highly polished with 
very fine, weak micro-reticulation and numerous, well spaced, tiny, 
superficial punctures that emit short setae which largely but not 
entirely fall short of the length of their interspaces. G aster: mod- 
