REPORT OF THE STATE ENTOMOLOGIST 1901 761 



Montreal in Canada. The first record of its appearance in the 

 state of New York was in 1861. Within late years, from being 

 an occasional visitor, it seems to have established itself in West- 

 chester count} T , and at Poughkeepsie. In other localities in the 

 state it is occasionally abundant, as in Eochester, where, accord- 

 ing to Mr Bunker, it " swarmed " one season, several years ago. 

 Prof. L. M. Underwood has written me that on Sep. 12, 1882, 

 he saw several examples flying over the low swales near the 

 Rhinebeck and Connecticut railroad in Columbia county. It 

 has not been observed in the neighborhood of Albany. A single 

 -example was taken at New Baltimore, 17 miles south of Albany, 

 in the month of September. 



Rose scale insect (Aulacaspis rosae Sandb.) This de- 

 structive southern species was found June 3 in abundance on 

 blackberry bushes at Hudson N. Y. The young were appearing 

 in considerable numbers at this time. It was breeding in large 

 numbers on cuttings from a crimson rambler rose brought from 

 Cobleskill N. Y. Oct. 18. Adult female scales were abundant 

 and several parasites, Arrhenophagus chionaspidis 

 Aur. were observed crawling on the twigs. This scale insect 

 was also sent in on raspberry plants from Cornwall N. Y. This 

 is a species which is brought to attention at infrequent inter- 

 vals in this state. One reason for this may be found in its 

 general resemblance to the exceedingly common Chionaspis 

 f u r f u r a Fitch, and it is not at all unlikely that many after 

 a glance have concluded that the scale on the raspberry or 

 blackberry was the scurfy bark louse and therefore not pushed 

 the inquiry further. The species is represented on pi. 4, fig. 3, 4. 



EXPERIMENTAL WORK AGAINST THE SAN JOSB SCALE 



INSECT 



The tests of various insecticides begun last year were con- 

 tinued in the same orchard during the present season, and in the 

 main the results in 1900 were confirmed, and our confidence in 

 a mechanical crude petroleum emulsion much increased. The 

 chief aim of experimental work along this line is to make com- 

 parative tests of various insecticides, and naturally some of the 

 substances used are not so effective as one might desire; yet, 

 in spite of that drawback, the experimental orchard is in much 



