PAMPHILIUS ERYTHROCEPHALUS. 93 



1. PAMPHILIUS ERYTHROCEPHALUS. 

 Vol. II, PI. VI, fig. 3, c? ; 3 a, base of Antenna. 



Tenthredo erythrocephala, Lin., S. K, i, 558, 26 ; F. Sv., 394 ; 



Fab., E. S., ii, 121, 66 ; Pz., F. G., 

 Heft 7, tab. 9 ; Schaef., Icon., tab. 

 96, f. 9. 



Lyda eryihrocepliala, Fab., S. P., 43, 1 ; King, Berl. Mag., ii, 



280, 16 ; Lep., Mon., 4, 7 ; F. Fr., 

 pi. xiv, f. 1; Ste., II]., vii, 103, 21, 

 pi. xxxviii, f. 4; Htg., Blattw., 

 326, 1 ; Thorns., Hym. Sc., i, 300, 

 2 ; Br. and Zad., Schr. Ges. Konig., 

 vi, 119; Cam., Fauna, 48, 1; Andre, 

 Species, i, 490 ; Gat., 61,* 4. 



Blue, often violaceous ; head red, anterior tibiae, and apex of femora 

 testaceous ; apical three-fourths of mandibles black ; palpi testaceous ; 

 ocelli in a bluish mark. Wings bluish-violaceous, nervures bluish- 

 black; the posterior wings are lighter coloured; the <$ has the body 

 more densely pilose ; the head is blue, except below the antennae where 

 it is straw-yellow ; the mandibles are of the same colour, except at the 

 apex which is black. 



Length 6 7 lines. 



Erythrocephalus has no near British ally, but is 

 closely related to the Continental L. flaviceps, Retz., 

 which may be known from it by the head being only 

 blue in the centre above ; below it is yellow, and be- 

 hind the eyes, at the sides, reddish-testaceous ; the 

 wings are sub-hyaline, and the anterior legs entirely 

 blue. The 3 has the head entirely black, except the 

 mandibles. 



The head of the larva is yellowish, sometimes brown- 

 ish, and marked with fuscous spots ; that of the body 

 olive, often with a greenish tinge, especially on the 

 back ; the anal segment more or less yellowish, the legs 

 reddish, black at the base. Each segment is divided 

 by deep depressions into five portions, of which the 

 three upon the dorsal region are marked with trans- 

 verse greenish-brown or fuscous spots. On the back, 

 commencing on the second segment and ending on the 

 last, is a thin greenish-brown line. There is a similar 

 line on the sides, commencing between the last pair of 

 legs and ending on the twelfth segment. There is a 



