This work was conducted to study the effect of four types of food (peanuts, yeast ,cheese,
luncheon) on biological aspects , fecundity, longevity, life cycle and life span of only one species
which was collected during the period of the work were done ,belong to astigmited mites namely,
lardoglyphus sp. under laboratory conditions ( 26 2C and 70 % RH).
The results showed that lardoglyphus sp. pass through its life by egg, larvae ,protonymph,
hypopus ,tritonymph and adult stage, all of these were affected by food types .Also ,fecundity , life
span and longevity were affected by different food types. As well as, the feeding on yeast was very
dangerous among four types food because its generation time was the shortest while its daily rate
was the highest when lardoglyphus sp. feed on it , so its rate give very large amount of population in stored products, but peanuts was less effective as it deposit less population as its generation and daily rate was very long when fed on peanuts .