Sweep-net collections during the summers of 1962and 1963 showed that a reduced population of the alfalfa weevil, Hypera postica (Gyllenhall), was present in northern New Jersey alfalfa fields. Larvae and adults were consistently collected. Investigations into the source of the larval populations were based primarily on dissections of field-collected and laboratory-reared female adults. From the present data it appears that the summer larval population is the result of late maturing, overwintered adults.
Document Type: Research Article
Publication date: June 1, 1967
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