IFU \ I [ON 



I I 



Suborder Isoptera. I ial or absent. Ai.?<-nnac 



long ;in<l lilamrnt<>u> or -Ix.rl and numilil'nrm. nine to tliirty-onc- 



Fi.. 14. Schistocerca .americana. 

 duced. 



Slightly re- 



FiG. 15. Hemimerus talpoides. Length, 

 11.5 mm. After HANSEX. 



segmented. Mouth parts prognathous or hypognathous. 1 Thoracic 

 segments simple, similar and equal ; prothorax large, free. Tarsi four- or 

 five-segmented. Alate or apter- 

 ous. Wings elongate, similar, 

 equal, membranous, delicate, with 

 few veins, sometimes with an in- 

 definite reticulation, with a char- 

 istic basal suture a ong which 

 the wing breaks off; hind wings not 

 folded. Abdomen elongate, wieh 

 ten se.unu'iHs and a pair of short 

 two- to six-segmented eerie In- 



FIG. 1 6. Oligotoma michacli. Length 10.5 

 mm. After McL.u HLAN. 



te.irument weak. Social in habit 

 and polymorphic; known as white 

 Bnts, Kxample, Tcrmcs (Fig. 

 28o)Aboutonethousanddescribedspecies 



Suborder Embioptera. Eyes facetted. Antenna 4 with fifteen to 

 thirty-one or more segments. Mouth part-prognathous; with a labial 



Pr dmvti-il ti,r\var<l. 



ilin-rti-tl d>\\ nward. 



