x] Beetles 115 
The green rose chafer has its thorax and wing 
covers of a metallic green colour (Fig. 33 a, 4). 
The grubs of these are not so easy to distinguish 
and can best be identified by a microscopic examination 
of one of the jaws!. The grub is of a whitish colour. 
When at rest it lies on its side with its body curled in 
the form of a semi-circle. It has a distinct head with 
marked jaws and feelers. The three segments behind 
5 6 
Fig. 336. Melolontha vulgaris, the cockchafer; (5) the larva; 
(6) the pupa; (1) the beetle. 
the head have each a pair of jointed legs. The abdomen 
is thick and fleshy, and swollen at the tail end which is 
often darker in colour, the contents of the intestine 
being visible through the body wall. The body is 
wrinkled and each segment except the second, third, 
and last bears a pair of spiracles. When fully grown 
the grubs vary considerably in size. 
The grubs of the cockchafer and the green rose 
chafer measure from 1}-1} inches in length. They 
1 See R.A.S.E., vit. 1897, p. 748. 
8—2 
