104 STATE BOARD OF AGRICULTURE. 



A. malifoliae Fitch. Also occurs on apple and may be a variety of mali. 



A. maidis Fitch. The corn louse, often causing serious injury to the young 



plants by their attacks on the roots. 

 A. pruni Koch One of the plum plant lice : Vineland, River Edge (U.S. 



A-g.). 

 A. vernoniae Thos. On iron weed, Vernonia novcz-boracensis. 

 A. prunifolise Fitch. Also found on plum leaves. 

 A. prunicola Kalt. Newark, Vineland (U. S. Ag.). 

 A. quercifoliee Walsh. Plant louse on oak leaves. 

 A. rumicis Linn. The bean plant louse. 

 A. sambucifolise Fitch. Plant louse on leaves of elder. 



Sub-family CAL,L,1PTEKIN;E. 



MONELLIA CEstl. 

 M. caryella Fitch. Occurs on hickories. 



CHAITOPHORUS Koch. 



C. negundinis Thos. Occurs on box elder. 



C. lonicerae Monell. Found on Lonicera sempervirens. 



C. populifoliae Fitch. On leaves of poplar : CEstlund questions whether this- 



is not C. populi (L). 

 O. populicola Thos. On shoots and leaves of poplar. 

 C. pinicolens Fitch. Plant louse on pine. 

 O. viminialis Monell. Feeds on willows. 



CALLIPTERTJS Koch. 



O. bella Walsh. Found on oak. 



C. asclepiades Monell. Common on milkweeds. 



C. caryse Monell. On leaves of hickory. 



C. discolor Monell. Occurs on oak. 



C. hyalinus Monell. An oak feeder. 



C. punctata Monell. Also found on oak. 



C. ulmifolii Monell. On leaves of elm. 



C. walshii Monell. Another oak louse. 



C. betulsecolens Fitch. Occurs on birch. 



C. castanese Fitch. Occurs on chestnut. 



MELANAXANTHUS Buckton. 



M salicti Harr. Occurs on willow. 



M. salicicola Uhler. Found on poplar and willow. 



