No. 34.] HEMIPTERA OF CONNECTICUT: APHIDIDAE. 261 



Measurements : Length of body 3.25 mm. Length of antennal 

 segments, iii, 0.64mm.; iv, 0.31 mm.; v, 0.37mm.; vi, 0.22mm. 

 Total length, 1.76 mm. Rostrum, iii, 0.25 mm.; iv, 0.25 mm.; v, 

 0.12 mm. Total length 2.08 mm'. Length of hind tibia, 2.39 mm. ; 

 hind tarsus 0.25 and 0.37 mm. 



AJate viviparous female: Antennae light-colored throughout 

 the third segment except a small part at the distal end, fourth and 

 fifth segments light dusky at the base, darker at the tip, sixth 

 segment entirely dusky. Femora dark except at the base, tibiae 

 dark at the knees and along the distal one-third, the basal two- 

 thirds light-colored. Third antennal segment with a single sen- 

 sorium near the distal end, fourth segment with none, fifth 

 segment of one antenna with one large sensorium at the distal 

 end, the other one with an additional smaller one at the center. 

 The beak extends slightly beyond the hind pair of coxae. 

 Cornicles large and volcano-shaped. Wing venation typical for 

 the genus. Hairs upstanding and long and thick, distinctly spine- 

 like. 



Measurements : Length of body, 3.25 mm. Length of antennal 

 segments, iii, 0.64mm.; iv, 0.31 mm.; v, 0.35mm.; vi, 0.23mm. 

 Total length 1.7-j-mm. ? Rostrum, iii, 0.27 mm.; iv, 0.23 mm.; 

 v, 0.1 mm. Total length 2 mm. Length of hind tibia, 2.4 mm.; 

 hind tarsus, 0.25 and 0.37 mm. 



Food plant : Pinus inops. 

 D. pini (Linnaeus). Aphis pini Linnaeus. 



Syst. Nat., Edn. 10, 453, 1758. 



Apterous viviparous female : Antennae with third segment, base 

 of fourth, and fifth, light-colored, other parts dusky. Femora on 

 all legs dusky, knees black. Tibiae yellowish near the base but 

 black at distal end. Yellowish areas on front tibiae cover about 

 one-half of segment, on middle and rear legs cover about three- 

 fourths of the segment. Third antennal segment approximately 

 equal in length to the fourth and fifth together. Fourth segment 

 much shorter than the fifth but slightly longer than the sixth. 

 Third and fourth segments without sensoria; fifth with a small 

 sensorium near the center and a larger one at the distal end. 



Measurements : Length of body 4 mm. Length of antennal 

 segments, iii, 0.72mm.; iv, 0.31 mm.; v, 0.41 mm.; vi, 0.27mm. 

 Total length 1.9 mm. Rostrum iii, 0.41mm.; iv, 0.25 mm.; v, 

 0.12 mm. Total length, 2.02 mm. Length of hind tibiae, 2 mm. ; 

 hind tarsus 0.23 mm. and 0.37 mm. 



Cauda broadly rounded. Body covered with small irregular 

 black spots ; a single hair arises from each one of these. Cornicles 

 volcano-shaped. Body, legs and antennae with long spine-like 

 hairs. 



Alate viviparous female: Antennae with third segment at the 

 base and dusky at the tip; remaining segments dusky. Femora 



