174 



THE WINGS OF NEUROPTERA 



(e) THE WINGS OF THE MANTISPIDvE 



The wings of Climaciella brunnea (Fig. 169) can be taken as an illustra- 

 tion of the type of wings found in this family. The two pairs of wings are 

 similar in form and agree in the more general features of their venation. 



^^^ /St A Cii2 CuxA C"' 



Fig. 169.— Wings of Climaciella brunnea. 



They are long and narrow; a pterostigma is present, but the limits of it are 

 not sharply defined; the subcosta extends midway between the costa and 

 the radius to near the end of the pterostigma, where it is forked; the radial 

 sector is pectinately branched; most of its branches are divided at the tip; 

 the base of media coalesces with radius for a short distance at the base of 

 the wing ; in the fore wing, media after separating from radius and extend- 

 ing down for a short distance bends up sharply and anastomoses with radius, 

 thus forming a small triangular cell. 



The media is apparently four-branched in both wings ; but the divisions 

 of veins Mi +2 and M3+4 are short and may be merely accessory veins, 

 corresponding with the divisions of the branches of the radial sector. 



A large cell Ri is a characteristic feature of the wings of insects of this 

 family ; as a rule this cell is divided by three cross-veins, but in the wings 

 figured here the third cross-vein has been eliminated by the anastomosing 

 of veins Ri and R2 near the apex of the wing. 



The number of the branches of the radial sector that are given off oppo- 

 site the ist cell Ri has been used as a diagnostic character; but this ntmiber 



