trophozoite of Gregarina polymorpha from the gut of the mealworm,
Tenebrio molitor. The protomerite (P) and deutomerite (D) can be seen
as well as the septum (S) which separates the two. This species is larger
than G. cuneata, though they both inhabit the mealworm gut. Feulgen
stain. 1200x.