caa a22 4500 38809334X CHVBK 20180307125257.0 cr unu---uuuuu 161130e199906 xx s 000 0 eng 10.4039/Ent131421-3 doi S0008347X00010026 pii (NATIONALLICENCE)cambridge-10.4039/Ent131421-3 SPRING PARASITISM OF OVERWINTERED EGGS OF LAMBDINA FISCELLARIA FISCELLARIA (LEPIDOPTERA: GEOMETRIDAE) BY TELENOMUS NEAR ALSOPHILAE (HYMENOPTERA: SCELIONIDAE) [Elektronische Daten] New Brunswick experienced its first recorded outbreak of hemlock looper, Lambdina fiscellaria fiscellaria (Guenée) (Lepidoptera: Geometridae), in 1989 (Magasi1990). Since 1993, populations have remained at endemic levels. From 1989 to 1994, when annual egg surveys were conducted (from October to April) on balsam fir, Abies balsamea (Linnaeus) Miller (Pinaceae) to forecast the next years' population for planning foliage protection programs, the egg parasitoids Trichogramma minutum Riley (Hymenoptera: Trichogrammatidae) (Hartling et al. 1991) and Telenomus near alsophilae Viereck (Hymenoptera: Scelionidae) were frequently reared from overwintering looper eggs. We believe two factors can cause an underestimation of egg parasitism rates by Telenomus near alsophilae: (i) eggs parasitized by Telenomus near alsophilae can be difficult to identify, and need to be reared to detect the black shading on the chorion which ranges from a mere dark spot to some gradation of black over the entire surface; and (ii) additional parasitism by this parasitoid might occur in spring. Our estimates of egg parasitism rates were as high as 23% (n = 93) from spring-collected looper eggs incorrectly classified as viable until incubated in the laboratory. We describe part of an experiment that confirms spring parasitism by this species, and illustrate the implications to operational looper control operations. Copyright © Entomological Society of Canada 1999 Hartling Lester K. Forest Pest Management Section, Forest Management Branch, New Brunswick Department of Natural Resources & Energy, P.O. Box 6000, Fredericton, New Brunswick, Canada E3B 5H1 Carter Nelson Forest Pest Management Section, Forest Management Branch, New Brunswick Department of Natural Resources & Energy, P.O. Box 6000, Fredericton, New Brunswick, Canada E3B 5H1 Proude Janet Forest Pest Management Section, Forest Management Branch, New Brunswick Department of Natural Resources & Energy, P.O. Box 6000, Fredericton, New Brunswick, Canada E3B 5H1 The Canadian Entomologist Cambridge University Press 131/3(1999-06), 421-422 0008-347X 131:3<421 1999 131 TCE https://doi.org/10.4039/Ent131421-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131421-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hartling Lester K. Forest Pest Management Section, Forest Management Branch, New Brunswick Department of Natural Resources & Energy, P.O. Box 6000, Fredericton, New Brunswick, Canada E3B 5H1 NATIONALLICENCE 700 1- Carter Nelson Forest Pest Management Section, Forest Management Branch, New Brunswick Department of Natural Resources & Energy, P.O. Box 6000, Fredericton, New Brunswick, Canada E3B 5H1 NATIONALLICENCE 700 1- Proude Janet Forest Pest Management Section, Forest Management Branch, New Brunswick Department of Natural Resources & Energy, P.O. Box 6000, Fredericton, New Brunswick, Canada E3B 5H1 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/3(1999-06), 421-422 0008-347X 131:3<421 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge