Abstract

This study was conducted at the Faculty of Agriculture, University of Aden, from January 2016 to December 2017. The study showed that the number of mites collected from the survey areas was sixty-nine (69), of which 32 were recorded previously, and thirty seven are found after the first registration. It was possible to define allover Yemen, thirty (30) types of mites were defined, whereas seven (7) types were put under the study classification. It was found that all types of mites belong to the 15 families regarding classification, all they were divided, according to the way they were fed into: Phytophagous types of plant species 36 belong to five families, while four species belong to two of the two multi-feeding families (Phytophagous and Predacious). 28 types belong to eight needy families (Predacious). This study aims at finding out the spread of the mite types on the various climatic zones, in addition to knowing their damages and dependencies, where samples of various plant parts were collected in perforated nylon bags. Species are spread in all areas of the study such as E.orientalis, T.urticae, T.cirnabarinus Citrus, papaye, grapes, pumpkins, eggplants and cotton, where some species, such as E.banksis, O.mangiferus, T.cucurnitacearym, were found only in coastal areas, O.afrasiaticus species on date palms and E.melongenus, which was observed roaming on eggplant leaves and daturainnaxia in semi-desert areas. The species P.ulmi, B.californicus, C. pulcher were spread only in the mountainous highlands on apples, peaches, quince, figs, grapes, apricots. E.ficus, O.niloticus, C.vitis affect grapes, olives and figs, respectively.