Insects as Intermediate Hosts of Tapeworms 



177 



larvae and adult of a moth, Asopia farinalis , in the earwig, Anisolabis 

 annulipes, the Tenebrionid beetles Akis spinosa and Scaurus striatus. 



Grassi considers that the lepi- 

 dopter is the normal inter- 

 mediate host . The insect takes 

 up the eggs scattered by rats 

 and mice. It has been experi- 

 mentally demonstrated that 

 man may develop the tape- 

 worm by swallowing infested 

 insects. Natural infection 

 probably occurs by ingesting 



117. 



One way in which Dipylidium infection in 

 children may occur. After Blanchard. 



or 



C 



with 

 Wlttl 



imperfectly cooked foods. 

 Hymenolepis lanceolata, a parasite of geese and ducks, has been 

 reported once for man. The supposed cysticercoid occurs in various 

 small crustaceans of the family Cyclopidae. 



118. The probable method by which Dipylidium infection usually occurs. 



