SANBORN : KANSAS APHIDID.E. 49 



Abdomen light brown in some species, dusky in others. 

 Honey-tubes concolorous with the abdomen, cylindrical, and 

 0.21 mm. long, or twice the length of the tarsi. Style black 

 on distal half, hirsute, and 0.128 mm. long, or half the length 

 of the honey-tubes. Total length of the body, 1,31 mm. 



This form was taken in May, on the verbena {V. auhletia) . 

 It is gregarious and colonizes all the above-ground plant. 



Aphis, n. sp. Plate IX, fig. 52. 



Head black. Antennae black, bare, and imbricated ; length 

 of segments : I, 0.07 mm. ; II, 0.07 mm. ; III, 0.28 mm. ; IV, 

 0.18 mm.; V, 0.18 mm.; VI, 0.09 mm.; VII, 0.34 mm.; 

 total length, 2.15 mm., extending a third of the way caudad on 

 the abdomen. Sensoria circular and unequal in size ; twenty 

 to twenty-five on the third joint, three in a row on the fourth, 

 the usual one near the distal end of the fifth, six small and un- 

 equal in size and one large at the distal end of the sixth. 

 Eyes black; ocular tubercles prominent; ocelli conspicuous. 

 Beak dark, 0.72 mm. long, the distal end of the second joint 

 reaching the abdomen. 



Prothorax dark ; lateral tubercles prominent ; thorax dark ; 

 wings pellucid, venation medium in width, and dark. Stigma 

 dark, 0.14 mm. broad and 0.54 mm. long. Total wing expan- 

 sion, 6.80 mm. Legs a little long in proportion to the body. 

 Tarsi, distal end of the tibia and femora black, remainder lighter 

 in color. 



Abdomen brownish green, a black spot on the lateral margin 

 of each tergum, also two black transverse bars caudad the 

 honey-tubes. Six lateral tubercles on each lateral margin. 

 The first one at the base of the abdomen and the one caudad 

 the honey-tube as large as the lateral tubercle on the prothorax, 

 remainder smaller in size. Honey-tubes black, imbricated, 

 almost cylindrical, broadest at the base ; the distal end has a 

 very narrow expanding rim. Caudad these is a black patch on 

 each side of the abdomen. Cephalad each is a semicircular 

 light band extending caudad the base. Length, 0.25 mm., or 

 twice the length of the tarsi, extending to the base of the style. 

 Style black at the distal half, this color extends cephalad along 

 the margins, remainder concolorous with the abdomen. All 

 hirsute and armed with short spines. Length, 0.18 mm., or a 



4-Bull., Vol. Ill, No. 1. 



