COLOUR. 



Dragon flies are often brilliant, with red, blue, yellow, green and other 

 vivid colours associated with black. A few grasshoppers are very vivid. 

 Warning colouring is very common. It is found that many insects 

 exactly copy the markings of such warningly coloured insects ; the former 



FIG. 65. 

 Warningly coloured Beetle. 



are not distasteful, have no unpleasant taste or smell; but escape 

 because they look like nasty butterflies or beetles. This is known 

 as Batesiaii mimicry) after its discoverer, Many Danaid butterflies 



FIG, 66. FIG. 67- 



A Wasp, protected by its sting and A Fly, harmless and edible, which 



warningly coloured. mimics the Wasp. 



are warningly coloured ; other butterflies, not of this group, but 

 living in the same locality, exactly mimic the Danaid in form and 

 colour ; they look closely alike and only careful examination shows that 



