THE INSECTS OF NEW JERSEY. 119 



N. rubi Kalt. A blackberry-plant louse which I have seen abundantly at 



Hammonton, and occasionally in smaller numbers elsewhere in the 



State. 

 N. liriodendri Monell. Sometimes common on leaves of tulip trees. In 



harmful numbers at Vineland in 1899. 

 N. rudbeckias Fitch. Occurs commonly on ragweed, golden-rod and other 



plants. 

 N. viticola Thos. Montclair, Perth Amboy (U S Ag), and generally 



throughout the State on grape. 



Family ALEYRODID^. 



This little family, popularly known as "white flies," contains only a few 

 small species in New Jersey, and most of these are of practically no im- 

 portance except on plants under glass. "White flies" are dangerous pests 

 in Florida and California on citrus plants, and occur in numbers in warmer 

 countries generally. They somewhat resemble plant lice in appearance, 

 but are covered with a fine whitish powder or flour. In the larval stage 

 they somewhat resemble scales, but as adults both sexes have four well- 

 developed wings. 



In the last edition only three species were listed, and very little collect- 

 ing has been done to increase this number in New Jersey; but Dr. W. E. 

 Britton, of Connecticut, has recently devoted considerable time to the 

 study of these little creatures, and he has been good enough to prepare 

 the following list of species, which he thinks will certainly be found in 

 our territory when properly sought for. 



ALEYRODES Latr. 



A. abutilonea Hald. Infests 

 "Abutilon avicennae" in 

 Pennsylvania and should 

 be found in New Jersey. 



A. acteae Britton. Described 

 from Connecticut on 

 baneberry, "Actea alba" 

 (W. E. B.), and will prob- 

 ably OCCUr in New Jer- Fig " 47-Aleyrodes citri with wings spread at a, 



and in natural position at b; much enlarged. 



sey. 



A. coryli Britton. Described from Connecticut, where it occurs through- 

 out the State; locally common on hazel nut and occasional on black- 

 berry (W. E. B.). Should occur in New Jersey. 



A. corni Hald. On "Cornus sericea" in Pennsylvania, and should be 



found in New Jersey. 



A. fernaldi Morrill. Massachusetts and Connecticut on Spiraea. 

 A. forbesi Ashm. (aceris Forbes.) Massachusetts to Illinois, on silver 



maple (W. E. B.), and should occur in New Jersey. 



