THE PEACH-TWIG MOTH: ITS LARVA.- 153 



Later, it was ascertained by Dr. Clemens that the insect occurred 

 also in Europe and had been previously described as Anarsia lineatella, 

 thereby adding it to the long list of insect pests which Europe has 

 given us. Professor Riley obtained specimens of the same moth from 

 peach twigs, and on submitting examples to Professor Zeller, they were 

 pronounced identical with the European insect. 



The larva has been described by Mr. William Saunders, as follows : 

 " The head is rather small, flattened, bilobed, pale brownish-yellow, 

 darker in color about the mouth, and with a dark brown dot on each 

 side. The body above is semitranspareni, of a reddish-pink color, fad- 

 ing into dull yellow on the second and third segments ; anterior por- 

 tion of second segment smooth and horny-looking, and similar in color 

 to the head. On each segment are a few shining reddish dots (yel- 

 lowish on the anterior segments), or faintly elevated tubercles, from 

 each of which arises a single, very fine, yellowish hair, invisible with- 

 out a magnifying power: these dots are arranged in imperfect rows, 

 a single one across the third, fourth and terminal segments, and a 

 more or less perfect double row on the remaining segments. The un- 

 der surface is of a dull whitish color, becoming faintly reddish on the 

 hinder segments, with a few shining whitish dots; those on the fifth, 

 sixth, eleventh and twelfth segments, being arranged in transverse 

 rows, in continuation of those above. The feet and prolegs are yel- 

 lowish-white, the former faintly tipped with dark brown. It spins a 

 slight silken thread, by which it can suspend itself for a time, at a short 

 distance from its place of attachment. 



Operations of the Larvae. 



The first published notice of the operations of this insect in this 

 country which we have met with, appears in the Eeport of the Ento- 

 mologist (Mr. Glover) oi the Department of Agriculture at Washing- 

 ton, published in the Annual Report of the Department, for 1872. 

 Mr. Glover states : — 



*'In examining peach orchards in the neighborhood of the Maryland 

 Agricultural College, about the first week in May, almost all the young 

 twigs of the trees were observed to be killed at the extreme end for a 

 distance of from one inch to two and a half inches, and the terminal 

 buds entirely destroyed. On cutting open the dying twigs, the injury 

 was found to be caused by a minute caterpillar, which, entering a twig 

 near the bud, had entirely eaten the pith and the interior, leaving only 

 its 'frass' and the exuding gum to mark the spot where it had en- 

 tered. When confined in a glass case, after about a couple of weeks, 

 several of the larva3 left the injured twigs and formed very loose co- 

 coons on the sides of the box or among the rubbish and old leaves 

 20 ■ 



