Submitted on: 14 August 2005.
Revised on: 24 October 2005.
Accepted on: 10 November 2005.
___________________JOURNAL OF INSECT SCIENCE---OXFORD UNIV PRESS INC
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Submitted on: 15 August 2001.
Revised on: 14 November 2001.
Accepted on: 02 December 2001.
___________________JOURNAL OF INSECT SCIENCE---OXFORD UNIV PRESS INC