WHITE ANTS. 



367 



In the May-fly (Fig. 327) the leaf-like gills grow out from 



the sides of the body. In the larval and pupal Perla 



(Fig. 328), tufts of gills are situated on the under side of 



the prothorax, and in 

 the adult winged Pie- 

 ronarcys these gills 

 are retained. Both an 

 European and Brazil- 

 ian Oaddis-flyhas been 

 found to possess gills 

 in the winged condi- 

 tion. 



The habits of the 

 Neuroptera are most 

 interesting ; the ant- 

 lion in the larval state 

 constructs a pitfall for 

 unwary insects. Its 

 metamorphosis is com- 

 plete, as is that of the 

 Aphis-lion (Fig. 329, 

 Chrysopa oculata Say, 

 adult and eggs). 



As an example of 

 mimicry among insects 

 is Mantispa (Fig. 330), 



which, in its raptorial fore-legs, strikingly resembles the 



Orthopterous Mantis (Fig. 333). 



The white ants top the Neuropterous series ; they live in 



stumps and fallen trees, and in the tropics do much harm 



by undermining the sills 



of houses, and destroying 



furniture, books, etc. The 



colonies are very large and 



populous. In our Termes 



flavipes there are males 



and females, workers and 



soldiers ; the workers being small, ant-like, with small round 



heads, while the soldiers have large square heads, with long 



Fig. 337.— May -fly and larva, the latter enlarged. 



Fig. 329. 

 eggs. 



-C%/'i/sop« and group of stalked 



