82 



AGRICULTURE. 



Fig. 36. Currant sawflies ; grub or larva on the 

 right. The perfect insects have yellow bodies. 

 The eggs are laid along the ribs on the backs 

 of the leaves. 



Fig. 37. Larvz of currant-worm, green, dotted 

 with black spots. 



TRANSPARENT-WINGED 

 INSECTS. This order 

 includes ants, bees, 

 wasps, hornets, and 

 sawflies. The scientific 

 name for this order is 

 hymenoptera. The study 

 of an ant hill will be 

 found very interesting. 

 We need not look for 

 any in a well-cultivated 

 field. No warning need 

 be given that in the study 

 o f bees, wasps, and 

 hornets great care must 

 be used. As for saw- 

 flies, illustrations given 

 in figs. 36 and 37 will 

 serve to make their 

 acquaintance to "iden- 

 tify" them. They are 

 called sawflies because 

 they are able to cut or 

 saw into leaves with their 

 abdomen in order to 

 make nests for their 

 eggs. The stems of 

 wheat are sometimes 

 cut off by sawflies, and 

 the galls in oaks are 

 produced by gall-flies 

 which also belong to the 

 order of transparent- 

 winged insects. 



