Fig. 2

Buccal capsule of A. tubaeforme showing three pairs of pointed teeth projecting from the dorsal margin (A); Buccal capsule of U. stenocephala, featuring two cutting plates, one on each side of its ventral aspect (B); Buccal capsule of A. caninum with teeth divided into three sets. Two ventral sets form a lower-jaw equivalent, while a further set projects from the dorsal side and loosely equates to an upper jaw (C); Copulatory bursa of A. caninum showing two lateral and one dorsal lobes (D); A. caninum female, with a terminal appendix of the tail (E). Scale bar: 25 μm