NEMATUS ABBREVIATUS. 61 



Antennae as long as the body, rather thick, the third and fourth joints 

 equal. Wings hyaline, iridescent, the costa and stigma whitish 

 testaceous ; the tegulse greyish ; the second cubital cellule is almost a 



Earallelogram ; the second recurrent nervure is received considerably in 

 ront of the transverse cubital one. The back of the abdomen is some- 

 what keeled, and at the apex there is a large depression on each side 

 of the carina. 

 Length 3 lines. 



The above is the description of the $ , the only sex 

 I have seen. According to Hartig the ? has the 

 antennae a little longer than the abdomen, the hinder 

 part of the pronotum reddish, and the coloration of 

 the legs is somewhat clearer. According to Yan 

 Vollenhoven the tips of the coxae have a reddish hue. 



Van Yollenhoven says that the larva feeds on the 

 apple, in the leaves of which, when it is young, it 

 devours round holes in the centre, feeding in a curved 

 position on the edge of the hole which it has bitten 

 out. When it becomes older it feeds indifferently on 

 the edge of the leaf or on any other part. The colour 

 of the larva is green, which when the creature is young 

 has a yellowish tinge ; when older the colour becomes 

 of a greyish-green along the back, the belly and legs 

 being paler and of a tinge approaching to yellow. The 

 head is of a faint brown tint or very pale feuille- 

 morte. The body is somewhat slender, smooth, hair- 

 less, a little narrowed posteriorly. On each segment 

 are two rather thick folds reaching to the spiracles ; 

 of these, that on the first segment only is conspicuous, 

 being comparatively large and bordered with black, 

 the others are much smaller and have white borders. 

 The mandibles are brownish and the eye-spots are 

 black. The legs are longish. There are no abdo- 

 minal legs on the anal segment. 



The larvae are found in May, the images appearing 

 in April and May. Kaltenbach states that the larvae 

 feed likewise on the pear, on which in Switzerland 

 they appear in great numbers and commit damage to 

 these trees. The pupa state is passed in the earth. 



I have only seen a single male of abbreviatus, taken 

 by Dr. Sharp in Braemar. 



