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The Effects of clove, Syzygium aromaticum essential-oil against spider-mite Tetranychus urticae, Koch was estimated in lab and semi-field conditions. Treated adult-females conducted by different concentrations of clove essential oil (eugenol) concentrations using spraying method for 1, 3 and 7 days. Mortality was measured upon treatment with three concentrations of 0.25, 0.50 and 1.0% V/V. Female mortality increasing with increasing concentrations and LC50 value was calculated. Moreover, all the tested concentrations of the essential oil were significant. The effect of LC50 of eugenol on the neuronal-enzymes acetylcholine-esterase "AchE" and alkalinephosphatase "ALP" of spider-mites were investigated on 24 hours and 3 days post-treatment. The obtained data resulted the activity of "AchE" and "ALP" showed decreasing after treatment on 24 hours by clove-oil while, "ALP" showed increasing on 3-days post-treatment. The evaluation of clove essential oil effect in semi-field condition on "T. urticae", results indicated that it gave satisfying results whereas 92 % population reduction respectively. Finally, we can conclude that clove essential oil was achieved good results to control this spider mites.

Biology of astigmatid mite, Caloglyphus berlesi (Michael) fed on stored food diets was studied at 20 and 30ºC., and cleare days but took 13.14 and 16.47 days on wheat and maize flour, respectively, and female lasted 14.6, 18.8 and 22.0 days when reared on wheat, maize flour and wheat bran respectively. Male adulthood at 20ºC durated 11.7, 17.6 and 1.6 days, but female averaged 14.5, 19.5 and 26.4 days, on wheat, maize flour and wheat bran, respectively. Male and female longevity took 10.68, 16.27 and 18.34 & 16.7, 18.42 and 24.36 days when fed on same foods, respectively at 30ºC. Diets affected on deposited eggs number at 20ºC. Therefore, feeding on wheat flour increased number (233.0 eggs), as, wheat bran decreased (165.5 eggs) at 20ºC., at 30ºC, eggs deposited was 259.3, 221.2 and 175.4, when females fed on wheat flour, maize flour and wheat bran, respectively. Wheat bran recorded highest protein content, followed by wheat and maize flour. Carbohydrates recorded highest for wheat, maize flour and wheat bran. Wheat flour was most suitable for rearing where highest number of deposited eggs recorded on wheat flour (233.0 at 20ºC) and (259.3 at 30ºC),

Mass rearing of Corcyra cephalonica and Oryzaphilus surinamensis adults on six different types of foodstuffs namely, wheat germ, complete wheat flour, rice flour, corn flour, basbousa flour and wheat flour (zero) were evaluated. Our results obtained reveal that mean developmental period (MDP) of C. cephalonica and O .surinamensis from egg lay to emerge adult on different foodstuffs was ranged between 44.00 & 55.33 and 30.33 & 41.33 days, respectively. Longest MDP was occurred on corn flour and rice flour illustrating 55.33 and 41.33 days, resp. While, the shortest period reaching to 44.00 and 30.33 days on wheat germ. Wheat germ was recorded the maximum adult emergence (AE) % (25.33 and 69 % progeny of C. cephalonica and O.surinamensis, resp.), While, wheat flour (zero) and basbousa flour were recorded the minimum AE %, 12.33 and 27.33 %, respectively. C. cephalonica and O.surinamensis caused highest weight loss (WL) % on wheat germ and corn flour (31.88 % 13.73 %), while, corn and basbousa flours were recorded the minimum of WL % (11.43 and 4.05 %) respectively., which the least preferred foodstuffs to C. cephalonica and O.surinamensis. In comparison between the growth index (GI) of different foodstuffs, our results showed that wheat germ was the most preferred by C. cephalonica and O.surinamensis, whereas, rice flour was the least preferred host. From results chemical analysis, there was a strong correlation between GI of C. cephalonica and O.surinamensis and chemical characters. This relationship was expected as a large carbohydrate, total protein, potassium and magnesium mounts.Our results provide suitable foodstuffs to mass rearing of C. cephalonica and O.surinamensis as the large scale production.

The study was done to investigate the occurrence of different mites associated with two sugar field crops in two different environmental regions in Egypt during 2018 and 2019. The first site cultivated with sugarbeet plants (Menshaat Salama, El-Riad district, Kafr El-Sheikh Governorate) and the second site cultivated with sugarcane plants (Koom Jaqoub village, Abou Tisht district, Qena Governorte) were chosen to conduct the study during 2018 and 2019 seasons. The obtained results showed that the occurrence of 53 different mite species belongs to 33 genera in 24 different families. The obtained results indicated that the Prostigmata (Actinedida) and Mesostigmata (Gamasida) mite species ranked the first as they included the highest numbers (24 and 17 species), respectively, followed by Astigmata (7 species) and Cyptostigmata (5 species). The feeding habitats of most collected species were also be discussed during the study. The current study should be taken into account in planning programs when conducting the Integrated Pest Management (IPM) in the two tested sugar field crops. Also, an exclusive survey must be performed for all mites on either the green leaves, debris, or soil beneath of those crops at these tested study regions.