302 



TENTHREDINID^. 



a-d. cJ 2 • 



Angara. 



e. $. 



Trans-Baikal. 



/". ?• 



Amoor*. 



86. Tenthredo benthini. 



Tenthredo benthini, Pudow, Stett. ent. Zeit. xxxii. p. 389 (1871). 

 Tenthredo basimacula, Mocs. Term, fdzetek, iv. p. 273 (1880). 



Hab. Brussa. 



87. Tenthredo allbopicta. 



Tenthredo albopicta, Puis, Ann. Soc. Ent. Belg. xiii. p. 151 (1870)- 

 Hab. Transcaucasia. 



88. Tenthredo purpurea. 



Tenthredo purpurea, Puis, Ann. Soc. Ent. Belg. xiii. p. 151 (1870). 

 Hab. Transcaucasia. 



89. Tenthredo nigritarsis. 

 Tenthredo nigritarsis, Puis, Ann. Soc. Ent. Belg. xiii. p. 152 (1870). 

 Hab. Transcaucasia. 



90. Tenthredo finschi. 

 (Plate XVI. fig. 5.) 



Exp. al. 13 lin., long. corp. 5| lin. 



Olive-yellow (perhaps somewhat faded ?) beneath, and varied with 

 black above. Vertex entirely black, as far as the antennas, except 

 a very narrow line within the eyes ; antennae short, black ; palpi and 

 tips of mandibles reddish brown ; mesothorax black above; V-spot, 

 hinder borders, and all the scutellar spots pale ; sides of pectus 

 marked with two slender black lines, connected above, and a shorter 

 one below. Abdomen pale, with a black band on each segment, 

 broad in the middle and tapering at each side ; in front of the 

 points are some more obscure blackish marks. All the femora with 

 a black line above ; four front tibiae with a brown line ; hind tibiae 

 and tarsi darker brown, with pale spurs. Wings hyaline, slightly 

 clouded towards the tips ; nervures brown, stigma reddish brown. 



* The late Mr. F. Smith regarded this species as identical with his T. erratica, 

 from which it differs in wanting the black spots on the thorax; the face 

 and the spot on the hind coxas are more distinctly yellow. The amount of 

 black on the apical half of the abdomen, as also the distinctness of the dusky 

 tip to the fore wings, varies slightly in different specimens. There are also 

 more or less distinct blackish lines at the base of the first two segments of the 

 abdomen. One specimen has a reddish spot on the pleura; another a shining 

 reddish line within the eyes. In the male, the pectus, abdomen, and base of the 

 coxas are of the same tawny colour as the rest of the insect. 



