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The Rose Emphytus (Emphytus cinctus). 

 The larvae of this sawfly work in quite a different 

 way, for they eat the leaves entirely away. They start at 

 the edge and eat down to the mid rib. Moreover, they do 

 harm in another way, for when mature they enter the 

 branches and kill the growth above them. 



This sawfly is common and widely distributed over 

 Britain as well as on the Continent as far as Eastern 

 Siberia. 



LIFE HISTORY AI\ 7 D HABITS. 



The adult is black, the thorax with white marks, 

 the abdomen with the fifth segment with a white band, 

 which does not reach all round ; legs black, base of 

 femora and apex of tibiae white, rest of tibiae and tarsi 

 reddish. The female is one-third of an inch long. The 

 male is smaller and has no white band on the body. 

 This sawfly occurs in June and the female lays her 

 eggs on the underside of the leaves in minute slits. 

 Some seven or eight eggs are placed on each leaf. 



The larvae are found from July to October feeding 

 on the edge of the leaves. The upper part of the body is 

 dark green, the sides pale, the skin is covered with small 

 white spots and is somewhat wrinkled ; the head brown 

 yellow and black ; legs white, with a dark mark over 

 each of them. The front part of the body is somewhat 

 swollen. They hold on by their front feet to the edge of 

 the leaf and curl the rest of the body in all manner of 

 shapes. When at rest they remain coiled up in a ball 

 on the underside of the leaves (Plate VI., Fig. 2). 



On reaching maturity they make their way into the 

 branches and there form a cell in which they pupate in 

 the following spring. 



