Abstract
An artificial diet was used in rearing the zoysiagrass billbug, Sphenophorus venatus vestitus Chittenden, to determine its life history. The diet was based on the Heliothis diet used by Berger. Composition and preparation of the diet are described. The average duration of the egg, larval, and pupal stages at 22$^\circ$ C and 27$^\circ$ C were 7.7 and 6.7, 29.1 and 22.0, and 12.1 and 8.6 days, respectively. The reared adult beetles mated and were maintained for a long period of time on the diet but they did not oviposit.
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