THE SYNLOPHE AND OTHER STRUCTURAL CHARACTERISTICS OF SARWARIA-BUBALIS(NEMATODA, TRICHOSTRONGYLOIDEA) FROM CATTLE IN GUYANA

The synlophe (longitudinal, surface cuticular ridges) of Sarwaria buba lis is described for the first time. It is a tapering lateral synlophe of about 40 ridges. The synlophe of S. bubalis is similar to that of Ostertagia ostertagi but markedly different from that of species of Sp iculopteragia and Mazamastrongylus. New information is provided also o n the structure of the esophagus and perivulval pores. The esophageal valve is more than twice as long as wide. The bilateral perivulval por es were located 192-267 mu m posterior to the vulva and dorsal to the lateral lines. The new information will be useful in a study of the ge neric level systematics of the Ostertagiinae. Sarwaria bubalis appears to be well established in tropical South America where it infects its normal host, the Asian water buffalo Bubalus bubalis, as well as dome stic cattle Bos taunts and mixed breed cattle B. taurus x Bos indicus.