AND OTHER INJURIOUS INSECTS OF IQG/ AND I908. 21 



June 18th, St. Anthony Park: Leaf hoppers present in all stages 

 on boxelder, but most numerous in first and second stages, indi- 

 cating probably that the second brood had just hatched. No eggs 

 found at this date ; they are probably laid by the aduts of the first 

 brood inside the tissues of the new and tender growth. 



June 26th, Monticello : Hoppers present on boxelder in first, 

 second and third larval stages. Second stage rather numerous on box- 

 elder. Not found on choke cherry, wild plum nor hazel. 



June 28th, St. Anthony Park: In third, fourth and fifth stages 

 on apple. . Not found on plum. 



June 29th, Red Wing : Adults and all nymphal stages present on 

 elm and boxelder, many being in first stage. 



July 6th, Albert Lea : Apple stock that will be three years old 

 this fall examined, and also one-year-old stock. Leaf hoppers found to 

 be more numerous in sheltered places. 



July 6th : Nymphs on choke cherry, sumac, bur-oak, thorn- 

 apple, and maple. Not found on hazel, though search was made for 

 them. 



July 18th, St. Anthony Park : Adults rather numerous on the 

 under side of the leaves of corn. 



July 20th : Nymphs of all stages, and adults very plentiful on 

 sweet clover, which was in bloom on this date. Adults very numerous 

 on new leaves of black oak. One adult found on hazel, and both 

 young and adults on blackberry. 



July 22nd : All stages present on sugar beets in small numbers. 

 All stages abundant on beans ; all stages found on basswood. Many 

 adults and all stages of young on boxelder. All of these adults were 

 probably adults of the second generation, and undoubtedly there are 

 three or more generation in a season. 



July 23rd : Adults on syringa, snowball, carragana. Adults and 

 young on Physocarpus opulifolius. Adults and young in all stages on 

 blackberry ; a few adults on raspberries. 



July 24th, Olivia : Adults on corn in small numbers. No nymphs. 



July 26th, Ortonville : Searched for on ash, elm and sumac with- 

 out success. Adults and young present in small numbers on boxelder. 



July 29th, Hallock : Abundant in all stages, boxelder leaves badly 

 ■curled. 



August 12th: Adults abundant and nymphs scarce on raspberry; 

 present in all stages on blackberry, also on rhubarb, hemp, potato, 

 sugar beets, and very abundant on beans and alfalfa. As a result of 



