Aspects of the behaviour and development of Amorbus obscuricornis were observed in the field during spring and summer 1994/1995 at a site in southern Tasmania. Nymphs of A. obscuricornis remained predominantly on host plants on which they were initially observed for much of their development. Some movements between hosts occurred with migrating nymphs ranging in age from second to fourth instar. Most adults observed for the first time on hosts were males, a number of which were later recorded with females. Males were observed to have longer host residence times (7-56 days) than females ( < 7 days). Complete nymphal development was roughly estimated to take considerably fewer degree-days under fluctuating field temperatures than at constant temperature. This suggested that other mechanisms (e.g. basking) may significantly influence nymphal growth and development.

Item Type:	Refereed Article
Research Division:	Agricultural and Veterinary Sciences
Research Group:	Forestry Sciences
Research Field:	Forestry Pests, Health and Diseases
Objective Division:	Plant Production and Plant Primary Products
Objective Group:	Forestry
Objective Field:	Softwood Plantations
Author:	Steinbauer, MJ (Dr Martin Steinbauer)
Author:	Clarke, AR (Dr Clarke)
ID Code:	13214
Year Published:	1998
Web of Science® Times Cited:	6
Deposited By:	CRC for Forestry
Deposited On:	1998-08-01
Last Modified:	2011-08-08
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