Redescription and population dynamic of some genera from subfamily Phyllocoptinae (Prostigmata : Eriophyoidae)‎

الملخص EN

Four species of eriophyoid mite belonged to three genera from subfamily Phyllocoptinae Nalepa (Prostigmata: Eriophyoidae) are redescribed.

In addition, the population dynamics of two species, Oxycenus maxwelli (Keifer) and Tegonotus mangiferae (Keifer) was conducted at El-Fayoum Governorate on olive and mango trees during two successive years 2017 and 2018.

The samples were collected from leaves, buds, branches and grass.

The obtained results showed that, four species were recorded and illustrated then arranged in taxonomical key, while the population dynamics were recorded two peaks O.maxwelli and T.

mangiferae.

The mentioned species were varied in their occurrence rate according to different locations and host plants.

On the other hand, the population was positively correlated with the prevailing temperatures and was negative significant correlation with the relative humidity for two successive seasons