Рет қаралды 125,581
April, 2018. Dark-waist paper wasp (Polistes jokahamae) queens hibernate in the same roll of plastic sheets every year. However this year, they did not come out from hibernation in spring. When I checked the plastic sheet roll, I found out that seven queen wasps were dead. they must have been parasitised by parasitoid wasps when they were larvae. There must have been 10 in the nest last year, so perhaps there were survivors...