56 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Aphis vitis Scopoli. Plate XI, fig. 65. 



Head dark brown. Antenna* black except at the distal ends 

 of the third, fourth, fifth and sixth segments, which are lighter 

 in color ; nearly bare and deeply imbricated ; length of seg- 

 ments : I, 0.09 mm. ; II, 0.07 mm. ; III, 0.34 mm. ; IV, 0.23 

 mm. ; V, 0.22 mm. ; VI, 0.10 mm. ; VII, 0.36 mm. ; total 

 length, 1.40 mm., generally extending to the distal end of the 

 abdomen. Sensoria circular, six in a row on the third joint, 

 four in a row on the fourth, the usual one near the distal end 

 of the fifth, six small of uniform size and two large ones at the 

 distal end of the sixth. Eyes black ; ocular tubercles prominent ; 

 ocelli present but not very conspicuous. Beak black, 0.45 

 mm. long, extending to the mesocoxa*. 



Prothorax dark brown ; lateral tubercles prominent. Thorax 

 dark brown to black; wings pellucid; veins brownish, rather 

 frail. Stigma black, 0.72 mm. long and 0.14 mm. broad. To- 

 tal wing expansion, 5.35 mm. Legs normal, black, very 

 slightly hirsute ; central part of the tibia a little the lightest in 

 color. 



Abdomen dark brown; honey-tubes black, imbricated, and 

 cylindrical ; length, 0.32 mm., or about five times the length of 

 the tarsi, extending generally to the tip of the style. Style 

 black, hirsute, conical, and 0.10 mm. long; equal in length to 

 the tarsi, or about one-fifth the length of the honey-tubes. 



This form was taken July 9, on the cultivated grape. It is 

 gregarious, and colonizes the tender growing stems and the dor- 

 sal side of the leaf. 



Aphis gossypii Glov. Plate XII, fig, 69. 



Head and antenna' black ; latter distinctly imbricated and 

 almost bare ; length of segments : I, 0.05 mm. ; II, 0.05 mm. ; 

 III, 0.19 mm. ; IV, 0.14 mm. ; V, 0.14 mm. ; VI, 0.09 mm. ; 

 VII, 0.23 mm. ; total length, 0.80 mm , extending to the honey- 

 tubes. Sensoria circular, four or five on the third joint, none 

 on the fourth, the usual distal one on the fifth, and six of un- 

 equal size on the distal end of the sixth. Eyes black; ocular 

 tubercles normal ; ocelli normal. Beak dark, the distal segment 

 the darkest; length, 0.63 mm. It extends to the abdomen. 



The cephalad part of the prothorax is black. The caudal 

 half is pale brown, with the exception of two black spots near 



