196 



FOREST ENTOMOLOGY. 



side, with a larger or smaller black-brown or black spot at the base 

 of the first segment, and becoming paler at the edges. This spot is 

 sometimes wanting ; on the other hand, the end of the body and 

 the under surface of the abdomen are somewhat light - coloured ; 

 the sheath of the ovipositor is intense black. 



"'All the flagellum joints of the thirteen -jointed antenna?, are 

 longer than thick, and become gradually a little less towards the 

 apex of the antenna? ; the first joint is the longest, the others prac- 

 tically agree in length ; the three-jointed club is egg-shaped, and as 

 long as the two foregoing joints taken together. The central part 

 of the face is obliquely wrinkled, the forehead longitudinally 



Fig. 191. Megastigmus spermotrophus (female). (Drawn by P. J. Brown.) 



Wrinkled ; the vertex of the head, the prothorax, the mesothorax, 

 and the scutellum are transversely wrinkled ; the post - scutellum, 

 outlined by a fine deep line, is glossy and smooth except at the base 

 and along the longitudinal middle line, where it is finely punctured ; 

 the metanotum is finely punctured, with a prominent longitudinal 

 keel in the middle, and in the case of most examples, with a trans- 

 verse ledge at the limit of its front third; the hind margin is glossy 

 smooth, without sculpture. The face, mesonotum, all the coxae, the 

 tibiae, and tarsi of the fore-legs and the middle and hind legs, are 

 white haired ; the vertex of the head and the forehead, the thorax, 

 especially both sides of the furrows of the parrapsides, the scutellum 

 other than the post-scutellum, the femora of the fore-legs and the 



