BIOTIC ASSOCIATIONS OF COCKROACHES — ROTH & WILLIS 2O9 



Phylum ASCHELMINTHES 



Class NEMATODA 



Order OXYUROIDEA 



Family OXYURIDAE 



*Enterobius vermicularis (Linnaeus, 1758) Leach in Baird, 1853 



Natural vectors. — Blatta orientalis and Blattella germanica, 

 U.S.S.R. (Sondak, 1935). 



Order ASCAROIDEA 



Family ASCARIDAE 



* Ascaris lumbricoides Linnaeus, 1758 



Natural vector. — Periplaneta americana, South Africa (Porter, 

 1930) : The eggs may have been those of A. suum Goeze, 1782. 



Experimental vectors. — Periplaneta americana, Gold Coast Colony 

 (Macfie, 1922) ; India (Chandler, 1926). 



Periplaneta americana, Periplaneta australasiae , Neostylopyga 

 rhomhifolia, Formosa (Morischita and Tsuchimochi, 1926). 



* Ascaris sp. 



Natural vector. — Blatta orientalis, Italian Somaliland (Mariani and 

 Besta, 1936). 



Experimental vector. — Periplaneta americana, Uruguay (Perez 

 Fontana, 1955) : Eggs recovered from the insects' feces. 



Order STRONGYLOIDEA 



Family ANCYLOSTOMIDAE 



*Ancylostoma caninum (Ercolani, 1859) Hall, 1913 



Experimental vector. — Periplaneta americana, Netherlands (Ak- 

 kerman, 1933). 



*Ancylostoma ceylanicum (Looss, 1911) Leiper, 1915 



Experimental vector. — Periplaneta americana. Gold Coast Colony 

 (Macfie, 1922); Netherlands (Akkerman, 1933). 



* Ancylostoma duodenale (Dubini, 1843) Creplin, 1845 



Natural vector. — Periplaneta americana. South Africa (Porter, 

 1929, 1930). 



