52 FEU IT INSECTS 



cliards at int(U-val8 of several years in New York and Pennsyl- 

 vania. It is widely distributed in Canada and the Unitcnl 

 States, extending- westward to New Mexico, wluM'e it was doubt- 

 less earri(>d on nursery stock. It is ca|xd)le ol" very d(\structive 

 work and sometimes becomes so numerous that there is a (rase- 

 Ix^arer for every two or thi-ee buds. 'iVo or three tiny ])arasites 

 helj) to control it. 



I^^xperiments show that this pistol-case-beanT can \n) effec- 

 tually controlled with two a|)|)licati{)ns of a, poison spray before 

 the blossoms open, as reconunended loi- tlie bud-moth, paji;e 45. 



lll'M'KKIONCIOS 



Lintner, 1st Rept. SUilo lOiil., N. V., |)i). Il'»;i-1('>7. 1882. 



(^oriK'll Af?r. Kxp. Sla,. Hull. 121. IS97. 



N. Y. ((Jencva) Aj^t. K.\p. Sla. Hull. 122. 1S<)7. 



TiiK Palmer-worm 



Ypsolophus ligulellus Hiibner 



This little Tineid moth occurs throughout the eastern half 

 of the Unit(Hl States, but has done n()tic(vd)le injury only in 

 New York and the New T^n^land stat(^s. It is a n^markable 

 example of the " ups and downs " of insect life, as it suddenly 

 appears over a larji;e area, does much damage for a year or two, 

 tluMi as suddenly disappears, often remaining in obscurity for 

 half a century or more. Its first outbreak ocH'urred in 1791 

 in New l^^ngland, followed ()2 years lat(T by the second over a 

 wid(^r t(u-ritory, including N(nv York in 1853, and after waiting 

 57 years, or in 1900, it again ravaged ap])le orchards in New 

 York. Its favorite food se(^ms to be the foliage^ and fruits of 

 apple, oak foliage, and, curiously enough, the spongy oak-apple 

 galls are sometimes eaten. The caterpillars or palmer-worms 

 are only about ] ^)f ^^ii i^^ch in length when full-grown, and of a 

 general olivaceous or brownish-green color, usually with a light 



