2$2 MAINE AGRICULTURAL EXPERIMENT STATION. I907. 



In general N. solanifolii is a large, active species, usually 

 green but very often pink, and sometimes yellowish, especially 

 the young of the pink individuals. 



Decidedly pink individuals occur both with the winged and 

 apterous viviparous females. At Houlton, August 17, 1905, 

 a pink-winged viviparous female was taken with 12 young, 

 7 of which were decidedly green and 5 decidedly pink. About 

 20 pink viviparous specimens collected at Maple Grove, August 

 18, 1906, were placed upon potato in the insectary. Some were 

 winged and some were apterous. On August 29 the young of 

 these were all found to be pink, though many were toning into 

 pale yellow. 



The insectary specimens of oviparous females were largely 

 pink, though many were yellow, and a few distinctly green. 



Nectarophora solanifolii. Winged viviparous female. — 

 Head yellowish green. Antennae, proximal segments pale green,, 

 distal segments dark ; length of segments : III, .88 to .96 mm. ; 

 IV, .76 to .9 mm.; V, .64 to ."J2 mm.; VI, .16 to .2 mm.; VII, 

 .96 to 1. 12 mm.; total length I to VII, 3.6 to 4.05 mm. Pro- 

 thorax and thorax light yellowish green. Wings hyaline, veins 

 dark brown, very slender, stigma pale brown. Total wing 

 expansion 8.1 mm. Legs with proximal part of femora and 

 tibiae pale, tarsi and distal part of femora and tibiae dark. Tarsi 

 .16 to .2 mm. Abdomen light green unmarked dorsally or 

 ventrally. Cornicles, with proximal portion green, and distal 

 portion dark brown, inbricated, cylindrical, length .95, mm. or 

 about 5 times length of tarsus. Style light green, ensiform, 

 length .48 mm. or about one-half length of cornicles. 



Total length of body to distal tip of style and exclusive of 

 antennae, 2.9 to 3.37 mm. 



Winged viviparous female, pink individual. — Head light yel- 

 lowish. Antennae with I and II light yellowish, rest dark. 

 Prothorax and thorax light yellowish pink. Abdomen pale 

 pink. Cornicles light yellow with tips dusky. Style pink. 



Apterous viviparous female. — Color as with the winged vivi- 

 parous form. Antennae, length of segments : III, .8 to .96 mm., 

 IV, ."J2 to .88 mm., V, .56 to .72 mm., VI, .16 to .2 mm., VII, 

 .96 to 1.2 mm. ; total length of segments I to VII average about 

 4.05 mm. Cornicles .96 to 1.04 mm. in length. Style .56 mm. 



