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SEX ATTRACTANTS FOR SOME EASTERN SPECIES OF RHYACIONIA, INCLUDING A NEW SPECIES, AND EUCOSMA GLORIOLA (LEPIDOPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

G.G. Grant ,
L. MacDonald ,
D. Frech ,
K. Hall  and
K.N. Slessor
G.G. Grant
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario, Canada P6A 5M7
L. MacDonald
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario, Canada P6A 5M7
D. Frech
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario, Canada P6A 5M7
K. Hall
Affiliation:
Great Lakes Forest Research Centre, Canadian Forestry Service, Sault Ste. Marie, Ontario, Canada P6A 5M7
K.N. Slessor
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
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Abstract

Field-screening tests using dodecenyl and dodecadienyl acetates and alcohols were conducted in pine plantations in northern Ontario to find attractants for Rhyacionia and Eucosma moths. Rhyacionia adana was attracted by various ratios of (E)-9-dodecenyl acetate and (E)-9-dodecen-1-ol (99:1 to 70:30) but no clear preference was observed. Similarly, R. busckana was also attracted to the same ratios of these compounds. Rhyacionia granti Miller, a new species revealed by these tests, was attracted to (E,E)-8.10-dodecadienyl acetate. Rhyacionia granti and R. busckana are newly recognized sibling species distinguished in this study by differences in their respective attractants, EAG responses, and phenologies. The fourth species studied. E. gloriola, was optimally attracted by 9:1 and 8:2 ratios of (Z)-9-dodecenyl acetate and (E)-9-dodecenyl acetate. Flight data for the 4 species in the same plantation revealed overlapping flight periods. Rhyacionia granti was the earliest flier, followed closely by R. adana and R. busckana, and somewhat later by E. gloriola.

Résumé

Des tests de dépistage sur le terrain, utilisant des acétates et des alcools de dodécène et de dodécadiène, oni été réalisés dans des plantations de pins du nord de l'Ontario. dans le but de découvrir des attractifs pour les papillons Rhyacionia et Eucosma. Rhyacionia adana a été attiré par des proportions variables d'acétate de dodécène-9E-yl et de dodécène-1-9E-ol (99 : 1 à 70 : 30), mais sans aucune préférence marquée. De la même façon, R. busckana a également été attiré par les mêmes proportions de ces 2composés. Rhyacionia granti Miller, une nouvelle espèce qui fut découverte lors de ces tests, a été attiré par l'acétoxy-1 dodécadiène-8E,10E. Rhyacionia granti et R. busckana sont des espèces apparentées nouvellement reconnues qui se distinguent par des différences au niveau de leurs attractifs respectifs, par leur réaction à l'EAG et leurs phénologies. Eucasma gloriola, la quatrième espèce étudiée, a été principalement attiré par des proportions d'acétate de dodécène-9Z-yl et d'acétate de dodécène-9E-yl de l'ordre de 9 : 1 à 8 : 2. Les données sur le vol des 4 espèces dans la même plantation ont révélé des périodes de vol qui se chevauchent. Rhyacionia granti a été le premier à voler, suivi de près par R. adana et R. busckana et un peu plus tard par E. gloriola.

Type
Articles
Information
The Canadian Entomologist , Volume 117 , Issue 12 , December 1985 , pp. 1489 - 1496
Copyright
Copyright © Entomological Society of Canada 1985

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