pair of small inner ventral teeth as well as a pair of large ventral teeth ratio of teeth 1:7 (av 1:3.8 - 8.6) cf A.b. 1:10.1 - 12.4 . A. ceylanicum is found in SE Asia, Africa and the normal definitive host is dogs or cats but it can also infect humans maturing in the intestine and causing some clinical symptoms. - see Biocca E. 1951 J. Helminthol. 25: 1-10, Yoshida et al 1968 (details in Bibliography)