caa a22 4500 38809284X CHVBK 20180307125256.0 cr unu---uuuuu 161130e199908 xx s 000 0 eng 10.4039/Ent131557-4 doi S0008347X00010178 pii (NATIONALLICENCE)cambridge-10.4039/Ent131557-4 OVIPOSITION TRAP TO SAMPLE EGGS OF OPEROPHTERA BRUCEATA (LEPIDOPTERA: GEOMETRIDAE) AND OTHER WINGLESS GEOMETRID SPECIES [Elektronische Daten] For the last 50 years, populations of the Bruce spanworm, Operophtera bruceata Hulst, and other wingless geometrid species have been sampled using sticky bands placed around host-tree trunks to catch wingless females in search of oviposition sites. This method is tedious and, because of trap saturation by males, may underestimate female populations at moderate to high levels. A standard oviposition trap was developed to sample eggs of the Bruce spanworm and other wingless geometrid species. A small polyurethane foam band placed on a post covered by a Multi-Pher® plate detected low populations and was almost unsaturable during outbreaks. Sub-sampling can be easily done in such situations. Egg density on oviposition traps was higher than female density on sticky bands for both the Bruce spanworm and the fall cankerworm, Alsophila pometaria Harris. This suggests that the oviposition trap might be useful to sample other wingless geometrid species. Operating this system was easy and could involve woodlot owners and companies to reduce the traveling costs necessary to collect samples. Copyright © Entomological Society of Canada 1999 Hébert Christian Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 3800, Sainte-Foy, Quebec, Canada GlV 4C7 St-Antoine Luc Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 3800, Sainte-Foy, Quebec, Canada GlV 4C7 The Canadian Entomologist Cambridge University Press 131/4(1999-08), 557-565 0008-347X 131:4<557 1999 131 TCE https://doi.org/10.4039/Ent131557-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131557-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hébert Christian Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 3800, Sainte-Foy, Quebec, Canada GlV 4C7 NATIONALLICENCE 700 1- St-Antoine Luc Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 3800, Sainte-Foy, Quebec, Canada GlV 4C7 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/4(1999-08), 557-565 0008-347X 131:4<557 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge