[Bee mite: Varroa jacobsoni qudemans].

Varroatosis caused by varroa jacobsoni on honeybee, Apis mellifera L., is currently one of the worlds major bee keeping problems. The mite parasites the adult honey bee, as well as its developmental stages, by sucking the insects's haemolymph. Up to date, many chemicals were used against this mite but still there is no chemical which has 100% effect and at the same time bees and their brood demonstrate a good tolerance. The investigations on biology and therapy on Varroa are still going on in many countries.