caa a22 4500 386361525 CHVBK 20180307111917.0 cr unu---uuuuu 161130e198906 xx s 000 0 eng 10.4039/Ent121425-6 doi S0008347X00035525 pii (NATIONALLICENCE)cambridge-10.4039/Ent121425-6 LABORATORY STUDIES ON DEVELOPMENT OF GYPSY MOTH, LYMANTRIA DISPAR (L.) (LEPIDOPTERA: LYMANTRIIDAE), LARVAE ON FOLIAGE OF GYMNOSPERMS [Elektronische Daten] The development of gypsy moth larvae was monitored in the laboratory on the foliage of 39 species belonging to 18 genera in the Araucaraceae, Cupressaceae, Ginkgoaceae, Pinaceae, Taxaceae, and Taxodiaceae. Larval survival through successive molts, time of larval development, live female pupal weights, and adult female production of ova were measured as indicators of host plant suitability for the gypsy moth. The criteria for distinguishing the most suitable hosts were as follows: (1) greater than 80% survival of first-instar larvae, (2) development to pupation in less than 41 days, (3) female pupal weights over 1099 mg, and (4) the production of more than 350 ova. The most suitable species were in the Pinaceae, in particular, Cedrus deodara (Roxb. ex Lamb.) G. Don, Larix decidua Mill., and Picea pungens Engelm. The least suitable species were in the Cupressaceae, Ginkgoaceae, and Taxaceae. First-, second-, and third-instar larvae often differed in their ability to survive on new foliage compared with foliage from the previous year. Overall, first-instar larvae successfully developed into adults on 20 of the species tested but second-instar larvae developed into adults on 29 of the species tested. First- through fourth- or fifth-instar larvae failed to develop into adults on eight of the species tested. Copyright © Entomological Society of Canada 1989 Miller Jeffrey C. Department of Entomology, Oregon State University, Conallis, Oregon, USA 97331 Hanson Paul E. Department of Entomology, Oregon State University, Conallis, Oregon, USA 97331 The Canadian Entomologist Cambridge University Press 121/6(1989-06), 425-429 0008-347X 121:6<425 1989 121 TCE https://doi.org/10.4039/Ent121425-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent121425-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Miller Jeffrey C. Department of Entomology, Oregon State University, Conallis, Oregon, USA 97331 NATIONALLICENCE 700 1- Hanson Paul E. Department of Entomology, Oregon State University, Conallis, Oregon, USA 97331 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/6(1989-06), 425-429 0008-347X 121:6<425 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge