1 8 MEDICAL ENTOMOLOGY 



EXERCISE 8a 



THE BEDBUG 



ORDER HEMIPTERA, FAMILY ACANTHIID,E 



A. Characteristics of Hemiptera. 



The Hemiptera usually possess two pairs of wings (except, 

 e. g. the Acanthiidae and Pediculidae), the front wings (wing- 

 covers) in the Hemiptera-Heteroptera are partly leathery, and 

 membranous at the apices. The mouthparts, as already studied, 

 are piercing, suctorial, typically three- jointed, closely ensheath- 

 ing three or four setae. 



B. Characteristics of Acanthiida. 



A group of wingless insects with extremely flattened bodies, 

 giving off a pungent odor. The color is reddish brown. An- 

 tennae are four-jointed. 



a. Examine a mounted specimen of Cimex kctulariys, the 

 common bedbug, for the above indicated characteristics. Draw 

 the specimen. 



EXERCISE 8b 



THE CONE-NOSES 



ORDER HEMIPTERA, FAMILY REDUVIIDJE 



A. Characteristics of Redumida. 



This is a group of predaceous insects, fore wings partly 

 leathery, distal portion membranous. The head is long and 

 joined to the body by a slender neck. The tip of the head is cone- 

 shaped, with a three-jointed heavy rostrum which curves under- 

 neath the body. The antennae are long and slender. The legs 

 are prominent and give the insect a sprawled out appearance. 



