No. 22.] 



HYMENOPTERA OF CONNECTICUT. 



21 



NOMENCLATURE OF WING PARTS IN THE DRAWING OF 



PTERONIDEA RIBESI. 



OLD SYSTEM 



Veins 

 Costal 

 Subcostal 

 Median 

 Anal 



Accessory 

 Inferior 

 Radial 

 Cubital 

 Subdiscal 

 Transverse costal 

 radial 



First transverse cubital 

 Second " 

 Third 

 Basal 



First recurrent 

 Second " 



First transverse median 

 Second " 

 Transverse lanceolate 



COMSTOCK-NEEDHAM SYSTEM 



Front Wings 



Veins 

 Costa 



Sc + R + M 

 Cubitus 

 ist A + 2d A 

 3d A and 2d A 

 Hind margin (not a vein) 

 Rs R 3 

 M R 4+5 + M, 

 in and M2 

 Sci 



Radial cross-vein (r) 

 Radio-medial cross-vein (r-tn) 

 Free part of Rs 



it a a p 



Medio-cubital cross-vein (m-cu) 



M 3+ * 



Transverse part of M3 



M 4 + CU! 

 M 3 



Free part of 2d A 



Cells 



Costal 

 Subcostal . 

 Median 

 Lanceolate 



Anal 

 Radial 



Appendiculate 

 First cubital 

 Second " 

 Third 

 Fourth " 

 First discal 

 Second " 

 Third 



First posterior 

 Second " 



Cells 



C and Sci 



M 



Cu + Cut 



ist A + 2d 2d A and ist 2d A 

 Usually the wing area covered 

 by ist A, 2d A, and 3d A 



3d A, or ist 2d A + 3d A 



Rl+2 



Appendiculate 



R 



R 5 



R4 



Rs 



M 4 



ist M 2 



Ma 



M, 

 2d Mi 



