REPORT OF THE STATE ENTOMOLOGIST 1901 77S 



bosc; trees 11, 56 and 57 are seckel; tree 50, an Idaho, and tree 

 96 a beurre d'Anjou pear. Tree 48 is a crab apple. The con- 

 dition of these trees near the close of the growing season, Sep. 7, 

 1900, was as follows. There were very few or no living scale 

 insects on trees 5, 6, 29, 48, 49, 55 and 56, very few on trees 75 

 and 97, few on trees 7, 30 and 96; they were very abundant on 

 trees 3 and 50 to 53, and extremely abundant on trees 8 to 11. 



May 22, tree 5 was just beginning to bloom, though it had been 

 partly uprooted by the wind. Trees 9 and 10 had set consider- 

 able fruit. Trees 52 and 53 were winterkilled to some extent, 

 and the same was true of tree. 92. Trees 93 and 94 had died from 

 the applications of the previous year, and had been removed. 



July 6, there were very few or no young scale insects on trees 

 4a, 7, 7a, 11, 29, 30, 48, 55, 75, 96 and 97, few on trees 51 and 56; 

 they were rather abundant on trees 4, 9, 10, 52, 53, 92 and 95, and 

 very abundant on trees 8 and 50. There was considerable dead 

 wood on trees 52, 53 and 92, and the bark was rather rough, 

 affording admirable shelters for scale insects. Tree 8 was very 

 badly infested in the spring, and the bark was quite rough. The 

 same was practically true of tree 10. Tree 4 had been attacked 

 by Scolytus rugulosus Katz., and the sap was exuding 

 copiously. 



Aug. 9, there were very few or no living young scale insects on 

 trees 6, 7, 29, 30, 48, 55, 56, 96 and 97, few on trees 4, 4a, 7a and 9, 

 trees 8, 49, 51, 52, 53 and 92, abundant on tree 95, and very abun- 

 dant on tree 50. Tree 5 had been removed, it probably dying as 

 a result of being partly uprooted. 



Sep. 25, there were few or no living scales on trees 6, 55, 56, 

 96 and 97, few on trees 10, 29, 30, 48, 54, 55 and 75, rather few on 

 trees 4a, 49 and 51; they were rather abundant on trees 4, 7, 7a, 

 9, 11, 52 and 95, and very abundant on trees 8 and 50. Tree 75 

 was broken down to the trunk by a heavy crop of fruit, but the 

 semiprostrate limbs showed no evidence of having been attacked 

 by S c o 1 y t u > r u g u 1 o s u s Ratz. There was a large amount 

 of dead wood on tree 92, and many vigorous shoots. Scolytus 

 was working in the dead wood and also attacking the living to» 

 some extent. 



