SOUTHERN" GREEN PLANT-BUG. 7 



Dorsally the surface of the head and thorax of all stages is rough- 

 ened by punctures and wrinkles. The surface of the abdomen is 

 smoother, the punctures and wrinkles present being largely con- 

 fined to areas around the glands and along the sides. Short setae are 

 scattered over the surface of the body and appendages. The margins 



Fig. 19. — Southern green plant-bug (Nezara viridula): Nymph, fifth instar; light and dark types 

 Enlarged about 4 diameters. (Morrill.) 



of the thorax, which in the instars succeeding the first are serrated, 

 are most prominent in the third and fourth instars. 



Immediately after molting the abdomen of the nymph is quite 

 flat dorso-ventrally but it gradually becomes thicker, until just be- 

 fore the new molt it is turgid and glistening. The nymph increases 



Fig. 11.— The green plant- bug (Nezara Mlaris): Nymph, fifth instar; light and dark types. Enlarged 



about 4 diameters. (Morrill.) 



in size from the beginning to the end of any instar and the length and 

 width is also increased through molting. 



Especially in the last two instars there is considerable variation in 

 the size of different individuals in either stage even just after or 

 before molting. This, of course, would be expected from the variation 

 in size of the adults. 



