132 
Toxoptera at Monetta, S. C, in 1908. Dr. Kiley states that he 
found the larvse feeding on Macrosiphum granaria. 
Mr. Ainslie took quite a number of Allograpta obliqua Say in the 
Southwest in 1907, and, though we can not say definitely that it 
feeds upon Toxoptera, the chances are that it does, as Dr. Riley 
states that it feeds upon MacrosipJium granaria. 
Mr. Kelly reared a number of Baccha clavata Fab. from Aphis 
setarix at Wellington, Kans., in 1908; Mr. R. A. Vickery also reared 
B. clavata from Aphis maidis at Brownsville, Tex., in 1911 ; Mr. J. J. 
Fig. 45. — Spliseroplwria cylindrica, a fly reared from larvae attacking the spring grain-aphis in South Caro- 
lina in 1907: a, Female fly; b, dorsal view of abdomen of male; c, hypopygium of male, lateral view. 
Enlarged. (Original.) 
Davis reared this species at Lafayette, Ind., from Aphis medicaginis, 
also in 1911. This species may in future be found to attack Toxop- 
tera also. 
Lace-Wing Flies. 
The lacewing fly Chrysopa plorabunda Fitch was quite abundant 
in the grain fields in the Southwest in 1907 and without doubt 
assisted materially in the destruction of Toxoptera. This is the 
most common species in this section of the country, where it hiber- 
nates in the adult stage; thus, whenever the weather becomes suitable 
it is ready to at once begin oviposition. An allied species is shown 
in figure 46. 
The larvae of these insects can move about quite freely and are 
provided with two long, curved mandibles (see fig. 46) upon which 
