Pomona ('(H.lkck Journal ok Kntomoi/xiv 



791 



(listiiKl frontal tiihcrclt's, hhick. Eyes — Very dark red. .I/i/./ukk (Fijfun- 

 l'i\, 1-4 and i^) . More than half as huijr as tlie IkmIv, roiu-hinj: to the base*! 

 of thi' cornicles, slender, with very few Imirs, imlirieated, nearly hiack cxccpt- 

 infr hasc of article III and at the articulations, henjrths of articles: I, O.OJI 

 mill.; 11. O.O") mm.; Ill, 0.45 mm.; IV, (l.'iC nun.; V, 0.17 mm.; V'f, (\.M mm., 

 (spur or (ilament 0.47 mm.); total. l.:iS nim. Article I is longer and larjfer 



Figure 251. Aphis maidis I'licli 

 A. winged viviparous female; H. apterous viviparous female; 1-4. antcnnal articles of 

 wiiiRed female (1. third article; 2. fourth article; i and 4. tiftli articles); S. cornicle 

 of vviuRed female; 6. cornicle of apterous female; 7, antenna "f apterous female; 

 8. antenna of winged female. 



than II, III is lonjii'r than IV' or V. hut not as long as the spur of VI, IV 

 always a little lonper than V, and twice as lonp a.s the base of VI. It is 

 noticeable that in most of the descriptions of the middle-western forms the 

 tilainent of VI is .shorter than III. while in practically every specimen col- 

 lected here it is much hmL'cr th.in III ;iiid in a few cases almost a third lonjfcr. 



