274 EMPHYTUS CALCEATUS. 



abdomen (fourth and fifth), sometimes part of sixth, reddish -orange. 

 Legs of the same colour ; coxas, trochanters and base of femora (broadly) 

 black ; apex of anterior and the greater part of the posterior tarsi 

 fuscous. Mandibles piceous ; tegulae black. Abdomen longish, cylin- 

 drical. Blotch invisible. Wings hyaline, a little darker in the centre, 

 nervures and stigma black ; costa fuscous. $ and g. 

 Length 4 4 lines. 



Var. a. Abdomen without a red band; posterior 

 trochanters white. 



Ab. b. Posterior trochanters pale; the second cellule 

 as broad at the apex as it is long (in what may be 

 called the type the second cellule is much longer than 

 it is broad at the apex). 



The sixth segment is sometimes, wholly or in part, 

 red. Em. coxalis, KL, seems to be an aberration, 

 with the trochanters white and the fifth and sixth 

 segments red. 



Easily known from E. rufocinctus by its smaller 

 size, shorter antennae, more obscure, almost opaque 

 mesonotum, red femora, &c. 



The larva feeds in June, July, and the early part of 

 August on the leaves of Spircea ulmaria. Its head is 

 deep black, with the oral region paler. The upper 

 part of the body is slaty-black, often with a greenish 

 tinge, the rest of the body with the legs whitish. The 

 skin is wrinkled and furrowed and bears a few hairs. 

 The spiracles are darker than the sides. 



In its habits, manner of feeding and pupation it 

 does not differ from the other Emphyti. 



E. calceatus is a common and widely distributed 

 Scotch species, but appears to be rarer in England. 

 Stephens records it from Darenth and Birch Woods, 

 from Dover and Bristol, and Mr. Dale takes it at 

 Glanvilles* Wootton, and Mr. Bridgman at Norwich. 



It seems to be not very common on the Continent, 

 although having a tolerably wide distribution. Sweden, 

 Germany, Holland and France are given as habitats. 



