cysticercoid of Hymenolepis diminuta. The suffix indicates it is
like a cysticercus but this larva has no bladder but instead has a tail.
The dark body within the spherical portion is the scolex. The longer the
tail, the more mature the cysticercoid. This stage is found inside an insect
such as the mealworm, Tenebrio molitor. 100x