NOMENCLATURE. 



FIG. 85. 

 Young Leaf Insect. (Compare Figure 49.) 



studied. In all, some 

 two to three hundred 

 thousand kinds of insects 

 have been classified. Each 

 of these has received a dis- 

 tinctive name. 



In the first place, all 

 insects that are almost ex- 

 actly alike, that can breed 

 together, and that may 

 have been descended from 

 the same pair of insects 

 during recent generations 

 are said to belong to the 

 same species; species in 

 fact are kinds of insects. 

 A number of species 

 which are similar in all 

 but colouring or other 



A caterpillar is the larva of 

 a butterfly or moth. 



A grub applies to the larva 

 of Cole opt era or Hymenoptera. 



A maggot is the larva of a fly 

 (Liptera) . 



A chrysalis is the pupa of a 

 butterfly or moth only. 



Nomenclature. 



Insects have been systemati- 

 cally studied during the last 

 two centuries and only a small 

 part of living insects have been 

 examined. In India a very 

 small part of the insect fauna 

 is known, though some of the 

 very common ones have been 



FIG. 86. 



Wood-boring Beetle, a, Grub ; b, Pupa ; c, Females 

 d, Malej e, Tunnels in wood. 



