NOMENCLATURE. 



57 



Fig. 85. 

 Young Leaf Insect. {Compare Figure 49.) 



studied. lu 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 

 tog-ether, 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 gritb applies to the larvii 

 of Coleoptera or llymenoptera. 



A maggot is the larva of a fly 

 [JJiptera) . 



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-horing Beetle, a, Gruh ; b, Pujm ; c, Female; 

 A, Male; e, Tunnels in ivood. 



