PAMPHILIUS BETUL2E. 99 



III. THE GROUP OF 



Body orange; thorax and apex of abdomen black. Wings 

 yellowish-hyaline, with a smoky fascia in the middle ; the 

 stigma testaceous. Antennae long, 23 28-jointed; third 

 joint a little longer than the following two united, Face 

 slightly keeled. Scutellum convex in centre. 



One of the best defined groups in the genus. 



5. PAMPHILIUS 

 PL II, fig. 8, ? . 



Tenthredo betulse, Lin., ]3. N., i, 509, 32; F. Sv., 394; Fab., E. 



S., ii, 122, 72. 

 fulva, Retz., De Geer, 74, 321. 



Cephalcia betulse, Pz., F. G., Heft 87, pi. xviii. 



Lyda letulse, Fab., S. P., 44, 8; Klug, Berl. Mag., ii, 276, 

 8; Lep., Mon., 12, 33 ; Ste., 111., vii, 102, 18, 

 pi. xxxv, f. 3; Fall., Acta, 1808, 220, 2; 

 Htg., Blattw., 334, 5 ; Thorns., Hym. Sc., 

 i, 307, 11; Br. and Zad., Schr. Ges. Konig., 

 vi, 176; Andre, Species, i, 508, pi. xxii, f. 

 1 ; Cat., 63,* 27. 



aurata, Klug, 1. c., 275, 6, pi. vii, f. 3 ; Ste., 111., vii, 101, 

 15 ; Lep., Mon., 10, 29. 



Orange-yellow ; meso-, metathorax, and apex of abdomen, black, ocelli 

 in a black spot. Wings hyaline, a violet-black cloud between the first 

 recurrent nervure and the fourth transverse cubital ; the cloud in the 

 posterior wings extends to the apex ; nervures, costa, and stigma, pale 

 orange-yellow ; the legs are yellower than the body ; mandibles black 

 at apex. 



The <$ has the cloud in the wings much fainter than in the ? . 



Length 8 8 lines. 



Birch wood, Devonshire (Stephens). 

 Continental distribution : Sweden, Germany, Russia, 

 France, Spain, Italy. 



IY. THE GROUP OF SYLVATICUS. 



Head and body violet-black, head and thorax marked with yellow. 

 Antennae and legs yellow, black at the base, 23 31 -jointed, 

 the third joint not much longer than fourth. Face slightly 

 keeled. Wings hyaline, stigma black, paler at apex. 



A group easily recognised by the violet-black body, 

 yellow scutellum, legs and antennae. 



