146 TENTHREDO ATRA. 



Tenthredo balteata (Vol. I, p. 83). 



The larva I have figured on PI. XIII, fig. 3 a — d, 

 Vol. II, and it feeds on Pteris aquilina. It is 20 mm. 

 long, transversely wrinkled, the back and upper half of 

 the sides dark green, the lower half of the sides of a 

 lighter green ; the head pale orange, with dark eye- 

 spots and antennge. On each segment are two trans- 

 verse rows of small warts. At the last moult it be- 

 comes entirely orange-red, smooth, and shining. 



Found commonly in August and September. 



Tenthredo Lachlaniana (Vol. I, p. 84). 



Konow (D. E. Z., 1890, 254) quotes doubtfully T. 

 poecilopus, Mosc, and P. poecila, Evers., as the <$ . The 

 species has been taken at York (Wilson) and Headley 

 Lane (Billups). 



Tenthredo dispar (Vol. I, p. 86). 



This is regarded by Konow (D. E. Z , 1890, p. 254) 

 as a variety of atra. 



Tenthredo atra (Vol. I, p. 88). 



The references to the larva given by Rudow, 

 Dours, and Andre are no doubt wrong ; for its food- 

 plants are given by Brischke (1. c\, 114, pi. viii, fig. 2) as 

 Lamium album and Mentha aquatica. He describes 

 it as 20 mm. long, transversely wrinkled, bright green, 

 above with a clearer tint, through which the dorsal 

 vessel shows as a dark stripe. Each segment except 

 the last has two transverse rows of white spiny warts, 

 the first row on each side of the dorsal vessel is com- 



