134 PIMPLINE ICHNEUMOXIDAE 



The ground color of the thorax and propodeum is j^ellow, varying somewhat 

 in shade but generally rather Ught. The markings range from yellowish- 

 brown to black and seem in some places to be situated on the margin of the 

 scleritcs to quite an extent. The ground color of the legs is yellow, like the 

 thorax, becoming darker toward the tips. Spots and streaks of brown occur 

 here and there. 



The prescutum which is practically circular in outline is margined with 

 brown or black, and from its hinder margin a band of this color extends to 

 the hinder end of the mesoscutum and a broader band narrowing posteriorly, 

 extends backward on either side. The ground color of the mesoscutum 

 appears as a pair of longitudinal bands and a narrow margin above the 

 tegula at each side. 



In the fore wing there is a brown, sometimes almost blackish, area covering 

 the stigma and extending backward across the radial cell, the tip of the cubito- 

 discoidal cell and frequently more or less involving the areolet. The tip of the 

 third submarginal cell is also covered by a spot of this kind, less pronounced, 

 however, than the other. 



The abdomen is browTi, varying considerably in shade, with bands and Unes 

 of yellow. Just in front of the hinder margin of the notum of the second and 

 also of the third segments is a transverse yeUow band, shghtly bent forward 

 • at its ends. These yellow bands in the hghter forms are margined with bro\\Ti 

 distinctly darker than that of the segments as a whole. In the darker form 

 these margins are not in evidence On the fourth, fifth and sixth segments, 

 these bands are extended forward almost to the spiracles, then toward the hinder 

 end and upward, following the general outline of the end of the segments, 

 the two parts of the band forming an acute angle. These bands are not con- 

 tinuous across the dorsum, nor are the dark bands which margin them, but 

 in the eighth segment the yellow band is continuous. 



The fusion of the pleura with the sternum of the second abdominal segment 

 extends from the base of that segment out to, or but shghtly beyond the spira- 

 cles. 



The male lunator differs from the female only in the following respects: 

 the abdomen of the male is sub-cylindrical throughout and not plow-share 

 shaped as, in the female. The pleura are extended downward completely 

 enveloping the sterna of aU but the second, third and a small portion of the 

 fourth segments. The sterna are not longitudinally divided by a groove and 

 therefore cannot show the median-sternal projections which may be seen in 

 the female. There is more variation in the color markings of the male, some 

 specimens showing a dark spot on the face above the clypeus: just before the 

 apex of the second and also of the third abdominal segments is a short trans- 

 verse yellow band, slightly notched at the center of its inner margin. These 

 bands are the only color markings on the abdomen. This sex may be distin- 

 guished from the male atrata by the spotted wings, and from nortonii by the 

 recurrent nervure entering at the middle of the areolet. 



Distinguishing Characters. — Lunator may be distinguished from 

 greenei by the following differences. It has dark lines from the 

 base of the antennae to the labrum, a dark band parallel to the 



