1993 Volume 55 Issue 5 Pages 849-851
Invagination or transformation of a zygote of Theileria sergenti into a kinete was examined with Giemsa-stained smears of the midgut of vector ticks, Haemaphysalis longicornis and H. mageshimaensis. Zygotes invaginated almost simultaneously with the moulting of host ticks. They were round and oval, and measured 5.4 to 6.7 μm in diameter on average. The kinetes developing in the zygotes were situated in the periphery of cytoplasm and were spindle- or club-shaped.