122 PACHYPROTASIS B-AP2B. 



1. PACHYPKOTASIS 

 PI. IX, fig. 2, Saw. ; PI. VI, figs. 1 and la, Larva. 



Tenthredo rapes, Lin., S. N., ed. xii, 926, 35 ; Schr., En., 336, 676 



ViJL, Lin. Ent., 45 ; Rossi, Mant., 242 ; 



Fab., E. S., ii, 114, 35; S. P., 41, 56 ; 



Fall., Acta, 1808, 99, 30, 1 ; King, Berl. 



Mag., viii, 127, 96 ; Ste., 111., vii, 73, 1 ; 



Htg., Blattw., 296, 19; Evers., Bull. 



Mosc., xx, 43, 12. 

 Pachyprotasis rapce, Thorns., Opus., 284, 1 ; Hym. Scand.,i, 248, 



1 ; Cam., Fauna, 15, 1 ; Andre, Species, 



i,341; Cat., 43,* 5. 



Head and thorax faintly punctured; head behind vertex, thorax, 

 and adomen above black ; orbits of the eyes, lower parts of the head, a 

 V-shaped mark on the mesonotum, a minute spot behind it ; scutellurn, 

 a spot on post-scutellum, and the lower part and sides of the body 

 white ; pleurae and the edges of sternum largely marked with black ; 

 abdominal segments variegated with black. Legs white, a mark on 

 coxae, the apical half of all the femora and the hinder pair also at the 

 sides, tibiae and four anterior tarsi above, and the whole of the posterior 

 tarsi black. Wings hyaline, costa and stigma fuscous-black. The 

 tegulae are black. The has the antennae longer than the body. 



Length 3 4 lines. 



Some specimens have the white markings much less 

 and the black ones on the pleurae and sternum larger 

 than in others, while, again, in rare cases, the former 

 are much larger and the ]atter less, and the abdominal 

 segments faintly lined with white on the back. 



The larva has the upper half of the body dull 

 greyish-brown, darker at the junction with the lower 

 white half ; a brownish stripe is over each leg ; claws 

 brown. Upper part of the head faintly brownish, 

 varying in intensity ; a black band goes across the 

 middle of the face from behind the eye spots, where it 

 is broader and darker in tint ; over the mouth the 

 head is paler, almost white ; mandibles black ; a few 

 scattered hairs on the head. The skin is wrinkled, 

 almost bare ; the anal segment has a few hairs. 



At the last moult the body becomes dark green, a 

 lighter and brighter green below the spiracles, a white 

 stripe is at the junction of the two colours. Head 

 light green, light brownish on vertex, eye spots black, 



