92 NEMATUS H1STIUO. 



Tenthredo caprea, var. a and var. c, Zett., I. L., 352, 52. 

 Nematus caprete, Thorns., vars. /, g, h, Opusc., 631, 38. 

 striatus, Brischke, Beschr., 12, pi. 11, f. 6 (lar.). 



Antennae much shorter than the abdomen, black, bare, almost shining, 

 attenuated at the apex, the third joint almost shorter than the fourth. 

 Head covered with very short pile, reddish, the part surrounding the 

 ocelli and the mandibles black ; mouth pallid, shining, punctured, the 

 clypeus slightly emarginated ; labrum nearly quadrate ; antennal fovea 

 small, round, deep ; head turned inwardly behind, the front projecting ; 

 vertical sutures very distinct; eyes small, oval; the palpi fuscous. 

 Pronotum livid testaceous, mesonotum half shining, punctured, reddish, 

 with three black marks; the apical half of the scutellum and the 

 metanotum being also black. The breast is smooth, and covered with 

 white pubescence. The legs are reddish, the four anterior femora at 

 the base and the posterior broadly lined with black, as are also the 

 apical three-fourths of the posterior tibia) and the whole of the pos- 

 terior tarsi ; the calcaria are short. Wings hyaline, nervures black, 

 costa and stigma reddish-fuscous ; the second cubital cellule is nearly 

 double the length of the third. The abdomen is longer than the head 

 and thorax, considerably narrowed towards the apex, reddish, the base, 

 two or three spots on the apical segments, the cerci and apex of sheath, 

 black ; the cerci are very long, the sheath long, broad, and rounded at 

 the apex, hairy, the apical segments of abdomen being likewise pilose ; 

 the blotch is pale yellow. 



The <^ has the antennas slightly thicker than in the ? : the abdo- 

 men is black, broadly red in the middle, thorax quite black. 



Length 4f lines. 



One of our largest species of Nematus. It is easily 

 known by its reddish colour with the black marks on 

 the thorax and abdomen, black posterior tibiae and 

 tarsi, elongated abdomen marked at base and apex 

 with black, longish cerci and saws, and the shortish, 

 deep black, bare antennge. 



It varies considerably in colour, more especially in 

 the amount of black on the thorax, abdomen, and legs. 

 The reddish ground colour also varies ; in some speci- 

 mens it is pale reddish-yellow, in others deep rufous, 

 while occasionally examples occur of a very obscure 

 brown, almost black. 



Ab. a. All the abdominal segments marked with 

 black. 



Larva shining, pale green, often with a slight bluish 

 tinge, the skin (except at the thoracic and anal seg- 

 ments) with small black dots. On the back is a 

 darker green dorsal stripe enclosed between two lines 

 which, when the larva is feeding, are white. The 



