When larvae and adults ofEleodes suturalis(Say) were offered 34 types of seeds (from 31 species of plants), both stages consumed almost all the seeds of hulless barley, hulless oats, wheat, forage sorghum, grain sorghum, sweetclover, and rye When larvae only were exposed to germinating seed and growing plants (simulated field conditions), in special greenhouse flats, sugarbeet seeds were consumed completely although little damage had been done to these seeds in laboratory tests In general, a larger percentage of seeds of most species was consumed in laboratory tests than in greenhouse tests.