APPENDIX E: HELMINTHS 
Information on the helminthic diseases was taken from Chandler 
(1949) and Faust (1955). The classification follows Hyman (1951, 
1951a). 
Parts I and II contain positive associations of cockroaches with 
helminths. Part III contains doubtful records, and Part IV contains 
negative findings. 
PART I. PATHOGENIC HELMINTHS WHOSE EGGS 
HAVE BEEN CARRIED BY COCKROACHES 
Phylum PLATYHELMINTHES 
Class TREMATODA 
Order DIGENEA 
Family SCHISTOSOMATIDAE 
Schistosoma haematobium (Bilharz, 1852) Weinland, 1858 
Common name.—The vesical blood fluke. 
Disease.—Vesical schistosomiasis or vesical bilharziasis, endemic 
hematuria. 
Experimental vectors——Periplaneta americana, Gold Coast Colony 
(Macfie, 1922): The eggs passed unharmed through the insect and 
appeared in the feces the following day. 
Class, CESTODA 
Order TAENIOIDEA 
Family HYMENOLEPIDIDAE 
Hymenolepis sp. 
Disease —Tapeworm infections. 
Natural vectors.——Periplaneta americana, Formosa (Morischita 
and Tsuchimochi, 1926): Eggs of this worm were often found in 
feces and intestinal contents of cockroaches captured in the animal 
house of the Government Research Institute. 
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