CHANGES IN ABUNDANCE OF NATIVE AND ADVENTIVE COCCINELLIDAE (COLEOPTERA) IN ALFALFA FIELDS, IN NORTHERN NEW JERSEY (1993–2004) AND DELAWARE (1999–2004), U.S.A

@inproceedings{Day2006CHANGESIA,
  title={CHANGES IN ABUNDANCE OF NATIVE AND ADVENTIVE COCCINELLIDAE (COLEOPTERA) IN ALFALFA FIELDS, IN NORTHERN NEW JERSEY (1993–2004) AND DELAWARE (1999–2004), U.S.A},
  author={William Henry Day and K. M. Tatman},
  year={2006}
}
ABSTRACT Weekly and biweekly sweep net collections were made near Blairstown, New Jersey, and Newark, Delaware (both in the U.S.A.), for 12 and 6 consecutive years, respectively. At Blairstown, only one non-native coccinellid [Coccinella septempunctata (L.)] was common when this research was started in 1993, one [Propylea quatuordecimpunctata (L.)] had recently appeared, and two others [Harmonia axyridis (Pallas), Hippodamia variegata (Goeze)] were detected later during the 12-year study. All… CONTINUE READING

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