268 EMPHYTUS TOGATUS. 



1. EMPHYTUS TOGATUS. 

 Plate VII, figs. 2, 2 a, 2 b, Larva ; Plate XI, fig. 8, ? . 



Tenthredo togata, Pz., F. G., Ixxxii, fig. 12. 



Emphytus succinctus, Klug, Berl. Mag., viii, 279, 293 ; Ste., 111., 



vii, 89, 1 ; Htg., Blattw., 247, 1 ; 



Evers., Bull. Mosc., xx, 26, 1 ; 



Thorns., Opus., 273, 1 ; Hym., 



Scand., i, 88, 1; Kalt., Pfl., 582, 



607; Andre, Species, i, 252; 



Cat., 31,* 16; var. Steini, I. c., 



579. 

 Dolerus togatus, Lep., Mon., 116, 340. 



Black, shining, covered with a slight fuscous pile. Antennae a little 

 shorter than the abdomen, the apex of the fourth and all the succeeding 

 joints reddish-testaceous ; the last four joints are much shorter than the 

 others ; the basal joint is more than double the length of the second, the 

 third and fourth nearly equal. Head with the frontal sutures distinct ; 

 the vertex is slightly raised ; the front does not project ; labrum red- 

 dish. Thorax considerably lengthened and narrowed in front ; tegulse 

 and cenchri white. Abdomen narrow at the base and sharply pointed 

 at the apex ; a spot at its junction with the metathorax in front of the 

 blotch (which is also white), a thin band on the fifth segment and a spot 

 at the apex, white. Saw long, half projecting. Legs : coxse, femora 

 and posterior tibiae at the apex, black ; trochanters and tibiae white, the 

 apex of tibiae and tarsi reddish. The mesonotum is very finely punc- 

 tured. Wings hyaline ; stigma at the base sordid testaceous ; the two 

 radial and upper part of the two first cubital cellules black ; costa 

 fuscous black. $ and $. 



Length 4 5 lines. 



A species easily known from all others by the inter- 

 stitial median and second recurrent nervures, and by 

 the clonded apex of anterior wings. 



The larva has been recorded to feed on birch and 

 willow. Messrs. Fletcher and Fitch have bred it from 

 oak on which the larva feeds in August. For speci- 

 mens of the larva I am indebted to the former gentle- 

 man. 



The larva has the upper half of the body dark olive 

 green, greyish white at the sides. The skin is wrinkled, 

 the top of the wrinkles bearing short black tubercles 

 like short spines. The legs white, with brown claws. 

 The upper part of the head is usually more or less 

 black ; generally there is a lighter spot at the back, 

 and the black portion divided in two by a light band, 



