26 MAINE AGRICULTURAL E;XPERIMENT STATION. I9IO. 



Fruit Tree Caterpillars. 



Ancylis (Pho.vopteris) nubeculana, the apple leaf sewer. 



From Enfield, Maine, August 28, and later also from other 

 localities come reports of injury to the leaves of several vari- 

 eties of apples. The leaf is folded along the mid rib, the two 

 sides being brought together, the caterpillar constructing its 

 nest within (fig. 18). The winter is passed in the larval con- 

 dition in the folded leaves which lie on the ground. In April 

 the larvae transform to chrysalids and about 10 days later the 

 moths begin to appear, laying eggs in June. The caterpillar 

 is about y2 inch in length when full grown, yellowish green, 

 with yellow head, and horny shield on the next segment a little 

 darker, with a black dot on each side. On each of the remain- 

 ing segments there are some pale, shiny, raised dots (tubercles) 

 from every one of which arises usually a single hair. The 

 tubercles of the first and second abdominal segment are arranged 

 as follows : one on each side of the middle dorsal line, the 

 second behind and below this, the third above the spiracle, the 

 fourth and fifth below the spiracle and fused, the sixth below 

 and behind these, below this is the seventh with 2 or 3 bristles, 

 and the eighth near the central line on the ventral surface. The 

 claws of the abdominal legs, over 40 in number, alternately long 

 and short, are arranged in an unbroken circle. The anal plate 

 bears 4 long bristles and is widely separated from the preanal 

 plate which is small and bears 2 bristles. The anal fork (fig. 

 32) has 6 tines, the middle 4 slightly bifid at the apex. The 

 mouth parts are shown in figures (28, 29, 31). The palpi of 

 the second maxillae are quite slender, each with a long terminal 

 bristle. 



When the injury to the 'tree is serious the fallen leaves may 

 be raked up and burned in the autumn to restrict the develop- 

 ment of the moth the following season. (Lot 792.) 



Coleophora Hetcherella (Cigar case bearer). 



The cases of this insect were gathered at Highmoor Farm 

 near Monmouth, Maine, June 24. The small caterpillars which 

 live in cigar-shaped cases feed from April to June on the buds 

 and foliage of apple trees. The little gray moths appear from 



