REPORT OF STATE ENTOMOLOGIST 1899 



553 



and has done very much damage where the trees have been left to them- 

 selves. Forest tent caterpillar [Clisiocampa disstria] relatively 

 scarce. In a few instances the leaves of currant bushes are nearly 

 destroyed by plant ice [Myzus r i b i s ]. June 3. Apple tree tent 

 caterpillars have spun their cocoons. The birds have been very indus- 

 triously destroying them, specially the wax wing, which more than all 

 others seemed to have no other business on hand. Willow butterfly 

 larvae, Euvanessa antiopa, have done some damage to elms 

 and have stripped leaves from single limbs but in no case more. June 

 19. Potato beetles [Doryphora 10-lineata] are fewer in 

 number than for years and are consequently doing less damage. Squash 

 bug [Anasa tristis] and striped cucumber beetle [Diabrotica 

 v i 1 1 a t a ] have been less injurious than usual. July 7. Since July 15 

 I have found many egg masses of the apple tree tent caterpillar and of 

 the forest tent caterpillar that had been destroyed by insects, but have 

 been unable to find the one doing it. The caterpillar of the cabbage 

 butterfly [Pieris rapae] is as destructive as ever. Aug. 8. 



Cayuga county (Joseph Foord & Sons, Auburn) — Cicadas [Cicada 

 septendecimj are here in our vicinity. They were discovered 

 June 5. [On this latter date J. Jay Barden reported the same insect in 

 vast numbers at Union Springs] June 9. Larvae of [Schizura 

 unicornis] are attacking plum trees in this vicinity. Aug. 29. 



Columbia county (G. T. Powell, Ghent) — There has been an entire 

 absence of pear psylla [P.pyricola] in my orchard, though I 

 have been obliged to fight it for the past 10 years, losing 700 trees and 

 10 crops of fruit. Apple tree tent caterpillar [Clisiocampa 

 americana] is not so numerous as usual ; spraying with arsenic is 

 very effectual. Apple aphis [Aphis mali] is serious on young 

 trees but can be controlled by spraying with kerosene and water. The 

 bud moth [Tmetocera ocellana] is the worst pest of the 

 season. Pear midge [Diplosis pyrivora] is found in every 

 Lawrence pear. We send men into these trees and cut off the pears 

 and burn them. May 24. Apple aphis is persistent on young trees, 

 cherry aphis [Myzus ceras.i] is developing. Forest tent cater- 

 pillars [Clisiocampa disstria] have shown a wonderful increase 

 in the past week. They are infesting the maples specially, but are 

 numerous on elm, larch, apple, pear, oak and ash trees. June 6. 

 Striped squash beetle [Diabrotica vittata] has made havoc 

 with squashes, melons and cucumbers. An application of lime and 



