40 



FORM AND COLOUR. 



FIG. 52. 



Female Long-horned Grasshopper, to show the sword-like ovipositor. 



In general where there is a diver- 

 sity of sex, the male is the smaller 

 (fig. 53) ; both sexes are frequently 

 similar in size and external characters, 

 the sex being- determined only by dis- 

 section. In many Orthoptera the males 

 are smaller and differently coloured, in 

 rare cases being very unlike the female 

 in general appearance. The male stick 

 insects are often winged when the 

 females are unwinged. 



There is little or no difference 

 between the sexes in Neuroptera. 



^HHWI^ 

 ^^UPBJp^ 



FIG, 53. 



Male and Female Moth, the smaller 

 male above. 



FIG. 54. 

 Male Ant, 



FIG. 55. 

 Worker Ant. 



