244 MAINE AGRICULTURAL EXPERIMENT STATION. 1910. 



tip of wing. R s * long and not much curved. M with 2 branch- 

 es like Schisoneura and obsolete at base. Cu and A both slightly 

 curved making the cell between them slightly oval. Costal 

 margin of wing strongly arched. Hind wing broad, venation 

 practically as in Schisoneura. Length of wing about 5 mm. 

 Legs with proximal half pale, distal part dusky, tibiae and tarsi 

 dark. Abdomen pale green, pulverulent. Total length of body 

 about 2.1 mm. Color description from live specimens. Meas- 

 urements from balsam mounts. Maine collection numbers 5-08, 

 15-09. Figures 206, 208, 209, 210. 



Apterous viviparous $?. Body pale green, pulverulent. Length 

 2 mm. Antenna I, 0.07 mm. ; II, 0.07 mm. ; III, 0.15 mm. ; IV, 

 0.085 mm.; IV, o.n mm.; VI, 0.14 mm. 



This form was present thickly packed in tips of balsam fir 

 and spruce in May, 1910. They matured about May 25. The 

 honey dew was so abundant that the trees could not be touched 

 without a sticky shower resulting. Maine collection numbers 

 21-10, 22-10. 



Habits and Habitat. Developing in curled tips of Abies bal- 

 samea Mill and Picea canadensis Mill. Migrating from infested 

 Picea canadensis twigs about mid- June, immediately after ac- 

 quiring wings. 



Professor O. W. Oestlund has collected this same species near 

 the Pacific Coast. 



BIBLIOGRAPHY FOR THIS GENUS IN AMERICA. 

 1879. Schisoneura pinicola Thos. Kept. Ent. 111. 8 (Thos. j) p. 137. 



Original description. 

 1887. Schisoneura pinicola Oestlund. Aphid. Minn. p. 30. Listed as 



not found in Minn. 

 1890. Schisoneura pinicola Packard. Forest Insects, p. 804. 4-line 



quotation from Thomas. 

 1899. Schisoneura pinicola Chittenden. Bui. Div. Forestry, U. S. Dept. 



Agric. 22 : 60. Mere mention. 

 1899. Schisoneura pinicola Britton. 22d Ann. Rept. Conn. Agr. Expt. 



Sta. for 1898. Brief account of an infestation of pine in 



Connecticut. Doctor Britton kindly informed me May 13, 



1910, that the species concerned in this infestation was not 



given detailed study. 



*For terminology of wing veins, the reader is referred to H ontologies 

 of the Wing Veins of the Aphididae. Ann. of the Ent. Soc. of America, 

 Vol. II, No. 2. 



