THE WINGS OF APOCHRYSID.'E 



211 



The fore and hind wings of Apochrysa are very similar in appearance 

 except that the hind wings are narrower than the fore wings and have fewer 

 cross-veins. In spite of the striking similarity in appearance of the fore 

 and hind wings they differ in structure. Here, as in the Myrmeleonidae, 

 similar resiilts have been attained by the use of different material. 



In Apochrysa veins Sc and Ri do not coalesce at the tip ; and, in the fore 

 wings at least, there are a few cross-veins in the subcostal area. In 

 Apochrysa crcesiis (Fig. 210), there is no hypostigmatic space in the fore 

 wings, but there is one in the hind wings. In Apochrysa matsumurcB, there 

 is a hj^postigmatic space in both fore and hind wings. These are the only 

 members of the family that I have studied. In both wings the radial, 

 medial, and cubital forks are ver\- near the base of the wing. 



In the fore wings vein Mi +2 extends nearly parallel with the inner 

 margin of the w4ng. Vein M3+4 coalesces with vein Cui, as in the Myrmel- 

 eonidae; the free part of vein M3+4, the oblique vein, is ven,- near the base 

 of the wing (Fig. 210, 0). Vein M3+4 + Cui is closely parallel with vein 

 Ml +2. It is the forward curv^e in the course of these veins that produces 



Fig. 210. — Wings of Apochrysa croesus. 



the resemblance of these wings to those of Chrysopa. Vein Cu2 is greatly 

 reduced in length (Fig. 210, CU2), it appears to anastomose with the first 

 anal vein, but a microscopic examination of the two species before me shows 

 that the two veins are separate; the space between them, however, is so 



