\\t €anatlmn mntoniolo^bt. 



Vol. XXXV. 



LONDON, FEBRUARY, 1903. 



No. 2 



LIFE-HISTORY AND DESCRIPTION OF THE STRAWBERRY 

 ALEYRODES, ALEYRODFS PACKARDI, N. SP. 



AUSTIN W. MORRILL, B. S., ENIOMOLOGICAL LABORATORY, I\I ASSACHL'SETTS 



AGRICULTURAL COLLEGE. 



This species has hitherto been considered identical with Aieyrodes 

 vaporariorum, the common greenhouse Aieyrodes of the tomato, 

 cucumber, etc. A critical study of all the stages of both the greenhouse 

 Aieyrodes and the strawberry Aieyrodes, made at the Entomological 

 Laboratory of the Massachusetts Agricultural College, has resulted in 

 finding structural differences between the two species in all the stages, 

 except the egg and adult. These differences may be tabulated as follows: 

 A. vaporariorum, Westw. A. Fackardi, n. sp. 



In the above table the spines on the cephalic region of the dorsum 

 are designated as {\\q first dorsal pair; those on the sides of the first or 

 third (first instar) abdominal segment as the .fi?^^?;/^/ dorsal pair; and those 

 which occur one on each side of the vasiform orifice the third dorsal 

 pair. (In the reproduction of the drawings the second pair of dorsal 



