192 OTHER JIEjMUKRS OE TilE (;LA.SS — INSECT A 



comb of many cells, side by sido, ^vitl^o^lt arn- covering (Fig. 

 135), and su,s]X'nded IVoni some object l.)y a small stem 

 or peduncle. These wasps are black and ringed with 

 yellow or are brownish (Fig. lo(>). The familiar yellow 

 jackets (I'ig. lo7) and hornets build 

 ]iests com]io,--e<l of several layers of 

 coml) surrounded by a gray papery 

 material (Fig. l.'JS). The nests of 

 tlie yellow jac-kets are usually built 

 in the gi'ound. The colonies of social 

 wasjis consist of males, females, and 

 woi'laTs. Every colon}' is firoken u]) 

 in the autumn, only the females sur- 

 ^'iving. 



The familiar nests of the mud- 

 dauber \\asps (Fig. 1311) consist of 

 several layers of long cells made of mud, lying side by side. 



Fig. 13 



w jacket 



They are built in the 

 outbuildings. The 

 adults may be seen 

 about puddles of 

 water, gathering 

 mud to build theii- 

 nests. An egg is laid 

 in each cell which is 

 then filled with liv- 

 ing but jjaralyzed 

 spiders to furnish 

 food for the young 

 wasps. 



Not all wasps ai'c 



attics of Jiouses or in liarns or other 



social. Some Hve alone, hence are 



called solitary. They build their nests in a, variety of 



