Technical Abstract: Commercial shipments of Orius insidiosus Say (Hemiptera:Anthocoridae) commonly include water and protein, the latter typically supplied by eggs from a moth such as Ephestia kuehniella Zeller. To determine whether alternative dietary conditions for young adult females might improve predation, O. insidiosus adults within 24 h of eclosion were fed on eggs of E. kuehniella plus encapsulated water, encapsulated 5% sucrose only, or encapsulated water only, for feeding periods of 24, 48, or 72 h. Digestive tract morphologies were examined by dissection and digital imaging. Females fed continuously on eggs had digestive tracts that were larger in visible area than those fed continuously on encapsulated sucrose, and areas did not change with the feeding period. When females were pre-fed encapsulated water or sucrose for 24-72 h and then fed on eggs for 3 h, the crops were highly engorged and crop areas were larger than those from females fed continuously on eggs for the same periods, although combined midgut-hindgut areas did not change. During 3-h videographic choice tests following 24, 48, or 72 h feeding on E. kuehniella eggs, females offered a choice of eggs or encapsulated water had no preference for associating with the eggs. In contrast, females pre-fed on encapsulated water or 5% sucrose solution on the same temporal feeding regimen spent a larger portion of the 3-h trial period in contact with eggs, presumably feeding. Those females pre-fed on water or sucrose, shipped overnight, and held for a total of 48 h consumed 3.6- and 4.3-fold more western flower thrips (Frankliniella occidentalis Pergande) in 3 h, respectively, than those pre-fed on E. kuehniella eggs. Survival rates of those pre-fed on sugar or water were comparable to those fed continuously on eggs. The findings suggest that egg-deprivation of females results in greater feeding activity after shipment, with no reduction in fecundity or survivability.