COLEOPTERA 103 



therefrom by having the hind tarsi only four-jointed. The 

 one perhaps best known is the meal worm of our granaries. 

 Note: 



(a) The form of the antennae. 



(b) The sculpturing of the body. 



(c) The joints of the fore and hind tarsi. 



11. The scarabs or lamellicorn beetles (Fig. 41): Stout 

 bodied, convex, herbivorous beetles (the most common ones 

 known as "June bugs"), having spiny legs, and tarsi armed 

 with big claws, and their antennae of very peculiar form, 

 the club at its tip being composed of closely apposed plates. 

 The larvae of the group are known as white grubs. 



Note: 



(a) The form of the head. 



(b) The form of the antennae, especially its club. 



(c) The spiny legs. 



12. The stag beetles: A small group of large beetles, one 

 of which, at least, a big brown fellow with huge pincher-like 

 mandibles on its wide head, is very well known because it 

 flies to lights at night. The antennae are similar to those 

 of the scarabs, but the plates of the club are not closely 

 appressed. Larva, a big white grub. 



Note especially: 



(a) The wide head. 



(b) The long antennae. 



(c) The flattened tibia, .widened toward the tip and 

 toothed on the outer margin. 



