HOW TO KNOW THE INSECTS 



comiaon In the woods In decaying logs but sometimes Invade the 

 cities where they do serious damage to buildings. Their 

 communal life makes them exceedingly Interesting. Unlike the 

 true ants, both sexes are represented among the workers. 

 17a Narrow wai sted, ant-like insects. (Ants, Velvet ants, etc.) 

 Figs. 54, 230 and 231. Order XXV, HYMENOPTERA, p. 106 



Fig. 54, AnAnt. Laslus nlger amerlcanus 

 Emory. The Cornfield Ant. 



The workers are all undeveloped fe- 

 males. Queens break off wings after 

 nuptial flight. Stubs of wings still 

 show. Length of v/orkers about 3 mm. 



Figure 54, 



17b Not narrow walsted 18 



18a Ant-like but with wide waists. Not flattened. Light 

 colored. (White ants or termites. )Fig. 55. Order IX, I SOPTERA 



Fig. 55. White Ants, (a Worker, b I.'ale, 

 c,e,f Stages of Females, d Soldier. 

 Retlculltermes flavlpes Kollar The 

 Common Northern Termite. 



Soft bodied, wingless, whitish. They 

 live within their tunnels In wood and 

 seldom if ever appear at the surface. 

 Length 5-7 mm., (from U.S.D.A.) 



Figure 55. 



18b Not as in 18a 19 



19a Small, flat bodied insects with heads as wide as bodies or 



nearly so. Chewing mouthparts 20 



19b Not as in 19a. 21 



20a Antennae of many segments. Found on old papers, etc. 



(Book lice). Fig. 56. Order XIV, CORRODENTIA 



Fig. 56. A Book-louse. Llposcelis 

 dlvinatorius Mull. 



Grayish white; eyes dark. Length 

 about 1 mm. 



Some members of this order have two 

 pairs of wings, and resemble aphids. 

 They are known as barkllce and are 

 found on tree trunks, on dead leaves, 

 in lichens, etc. 



Figure 56. 



45 



