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The model without hosts is adequate, but the one with hosts is not, as it predicts a continuous increase of proteins from the massive host-feeding intake, contrasting with the observed decline. Carbohydrate reserves are burned at a high rate for maintenance and can be used to predict lifetime in absence of hosts. We then built two nutrient budgets, with and without hosts, encompassing 20 measured biochemical parameters and tested their predictions using time of death. We recorded each host-feeding and oviposition event over entire lifetimes and quantified the amounts acquired and invested in eggs using microcolorimetric techniques. We quantified sugar, glycogen, protein, and lipid reserves of single females at birth and death and their daily maintenance needs. Our aim is to develop a datarich multidimensional dynamical budget of nutrient acquisition and allocation in survival and reproduction in the host-feeding, synovigenic bruchid ectoparasitoid Eupelmus vuilletti (Hymenoptera: Eupelmidae) over the entire lifetime of the animal in order to address the above questions. Models of host handling decisions and physiologically structured host-par- asitoid population dynamics make diverging assumptions, untested as of this writing, about the allocation rules of nutrients to survival and reproduction.