48 THE APPLE LEAF n()PPI-:R 



May 11 and 12. Su]Ji)ose(lly specimens representing first brood 

 found on Station ground on fall rye and winter wheat, none on spring 

 grain. Also a few .--pecinier.s on grass below Lake street bridge. 

 These findings were our first this season, though we looked for them 

 May 3tii, 6th and 7th at Albert Lea and Mankato. 



On Mav 27th winged and wingless females were found producing 

 voung ou oats and nu grasses at the Station. Evidently the first 

 m'grant form appears at this date. 



lunc (). Found in small numbers along with its |)rinci])al parasite, 

 at Al])ert Lea, in oat field. Oats about six inches high. 



June 9. Owatoiina • yrcsent in small numbers on grain. 



June 26. Li varying abundance at Monticello, on oats, wheat, 

 l)ark'\-, ])igeon grass and corn. 



)une 28. Numerous on small grains at St. Anthony I'ark. 

 Winged forms more numerous than wingless. 



June 29. Found on rye at Red Wing. Many individuals par- 

 asitized. Also found at this date on barley and Bromus. 



July 5. Present in small numbers on corn at Mora. Minn., and 

 abundantly on oats, both winged and wingless; one individual on 

 quack grass. Three specimens observed to be attacked by mites. 



July 6. W^inged and wingless forms found in small numbers on 

 oats and volunteer barley. 



July 7. (irass Lake; not found on rye, but present on heads 

 and leaves of barlc}-, and both winged and wingless forms found on 

 oats. 



July 9. North IJranch; ])resent on oats, wheat and barley; most 

 abimdant on oats. 



July IS. \\'inged forms without A-oung on corn. 



Jul}' 20. Parasitized individuals, winged and wingless, on heads 

 of wheat at St. Anthon\' Park. 



July 2? and 26. ( )n corn ;ind wheat at ( )livia, Minn., winged, 

 wingless and young, and to scMiie extent on oats. 



July 2(). ( )rtonville ; not found on corn, barley or lilue stem 

 wheat. 



July 27. I'.reckenridge ; on heads of blue stem and flcnicuin pn- 

 hafiiiii. 



Jul\- 28. .Moorhead; small nnmber.s on l)arle\' and wheat. 



Jul}- 2*'. Ilallock; a fcAv on heads of wheat ami on leaves of 

 l.arley. 



Jul}' ,■>(), ('rookston: in small number on oats, barle\', wheat 

 and llordcniii f^ithatiiiii. 



