HOW TO KNOW THE IMMATURE INSECTS 

 ORDER HEMIPTERA 



la. Aquatic or semi-aquatic 2 



lb. Terrestrial 10 



2a. Antennae shorter than head, usually concealed 3 



2b. Antennae as long or longer than head, exposed 8 



3a. Bugs that live within water 4 



3b. Bugs that live on or near water 7 



4a. Hind legs with 2 distinct claws 6 



4b. Hind leg without distinct claws 5 



5a. Back swimmers; fore tarsi with 2 claws. 



Fig. 356 Family NOTONECTIDAE 



The family is composed of more 

 than 200 species. They are known 

 as back swimmers because they 

 swim on their back with oar-like 

 hind legs. They are common around 

 edges of fresh water ponds, lakes 

 and streams. They feed upon small 

 animals. Eggs ore laid on or in the 

 tissues of aquatic plants. 



Fig. 356. Notonecta undulata 

 Say, 3rd instor. 



5b. Fore tarsi flattened, without claws. Fig. 357. ...Family CORIXIDAE 



About 300 species hove been de- 

 scribed. The common name is water 

 boatman. They live in fresh and 

 brackish water. Eggs are laid on 

 aquatic plants and other objects. 

 Their food consists of all kinds of 

 organic ooze. 



Fig. 357. Aretoeorixa aiternoto 



Say, 5th mstar. 



129 



