| coccidian parasites (apicomplexa: eimeriidae) of graptemys caglei and graptemys versa (testudines: emydidae) from texas. | nineteen map turtles, graptemys caglei and graptemys versa were collected from the guadalupe and colorado river watersheds of south-central texas and examined for coccidial parasites. thirteen of the 19 turtles (68%), including 11 of 16 (69%) g. caglei and 2 of 3 (67%) g. versa, were infected with at least 1 coccidian. five eimeria spp. (e. chrysemydis, e. graptemydos, e. lutotestudinis, e. pseudogeographica, and e. trachemydis) were harbored by g. caglei, and 2 eimerians (e. graptemydos and e. ... | 1984 | 2040965 |