302 



STATE BOARD OF AGRICULTURE. 



The Pistol Case-bearer. {Coleophora vialivoreUa.) 



An insect, closely related to the cigar case-bearer, is the pistol case-bearer. 

 It is found on apple, plum and cherry, the minute pistol-shaped cases being 

 built up out of particles of leaf, with silk, according to Professor Slingerland.* 



The life history differs somewhat from that of the cigar case-bearer, but not 

 so materially as to affect the treatment. The remedy is to spray twice between 

 the time of their attack and the time of bloom, using paris-green in the usual 

 way. 



The Cigar Case-bearer. (Coleophora fletcJiereUa.) 



This very interesting little creature is occasionally so numerous as to cause 

 injury to apple and pear. The ^larva makes a case in a manner similar to the 

 resplendent shield-bearer. This little case resembles a minute cigar about one- 

 fourth of an inch long. It is very carefully described by Professor Slingerland 

 in Bulletin No. 93 of the Cornell University Experiment Station. The larva is 

 said to make two cases during its lifetime, one in the fall, curved and very 

 small, and one in the spring in which the pupal stage is passed. It attacks the 

 buds as they swell, and later feeds on fruit and foliage reaching out from the 

 case and mining under the skin of the leaf. The adult is said to be steel grey 

 in color and spreads less than half an inch from tip to tip of its wings. It may 



Fig. 20. — Cigar Case-bearer, after Slingerland. 



be controlled by early sprays of paris-green. applied when the buds open, and 

 also at the time when the trees are sprayed for the codling-moth. Usually it 

 will be found expedient to add the poison when spraying with Bordeaux for 

 the scab, thus reducing the expense. 



Apple Leaf-miner. {Tischeria malifoliella.) 



As the name implies, this is an insect which tunnels in the folia.ge of the 

 apple, burrowing between the upper and lower surfaces of ihe leaf, and feeding 

 on the soft tissue there found. The mines of these little creatures are quite 

 variable in form yet all conform to a general type. Usually at the starting 

 point, there is a slender part which broadens as it progresses from the point 

 where the egg was laid, and which often is marked with transverse bands of 

 light and dark. (See Fig. 21.) After the mine is partly made the last part 

 may be blotch-shaped or irregular in outline, and this blotch may even extend 

 under the original trumpet-shaped portion. The insect which does all this min- 

 ing is a small larva without feet, and pale green in color, except for the head 



*Bul. 124, Cornell University Experiment Station. 



