pdf, 57.71Mb - Entomological Society of Canada
pdf, 57.71Mb - Entomological Society of Canada
pdf, 57.71Mb - Entomological Society of Canada
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50 W. J. Turnock<br />
Table 7<br />
Table 8<br />
Parasitoids recovered from field-collected larvae <strong>of</strong> Mamestra eonfigllrata<br />
Walker in <strong>Canada</strong>.<br />
Hymenoptera<br />
Ichneumonidae<br />
Banehlls f1aveseens Cress. (M,S,A)·<br />
Braconidae<br />
Apanteles xylinlls (Say) (M)<br />
Cotesia laevicips (Ashm.) (M)<br />
Eulophidae<br />
Elllophlls nr. nebillosus (Prov.) (M)<br />
Eupleetrus bieolor Swed. (M)<br />
Diptera<br />
Tachinidae<br />
Athrycia cinerea (Coq.) (M,S,A)·<br />
Mericia ampeius (WIK.) (M,S,A)<br />
Exorista mella (Wlk.) (S.A)<br />
Phryxe peeosensis(Tnsd.) (M)<br />
P. vulgaris (Fall.) (M)<br />
Chaetogena sp. (A)<br />
C. sp. (c1aripennis (Macq.) group) (A)<br />
Lespesia sp. (A)<br />
Winthemia rufopieta (Bigot) (M)<br />
W. qlladripustulata (F.) (M)<br />
• Location <strong>of</strong> collection points in parenthesis. (M = Manitoba, S = Saskatchewan,<br />
A = Alberta).<br />
Banehus f1aveseens Cress. was the most abundant species regardless <strong>of</strong> host<br />
abundance (Table 8). This univoltine parasitoid lays its eggs in the early larval instars<br />
and completes its development before the host would normally pupate.<br />
Parasitism ('Yo) by Banehus f1aveseens Cress., Athrycia cinerea (Coq.), Mericia ampelus<br />
(Wlk.), and other species on Mamestra eonfigurata Walker in Manitoba, Saskatchewan,<br />
and Alberta, 1972-80.<br />
Parasitism ('Yo)<br />
Year(s) Province No. No. Banehus Athrycia Mericia Other<br />
Fields Larvae<br />
1972-74 Manitoba 119 1915 28.3 20.7 0.4 0.1<br />
Saskatchewan 1 59 47.5 1.7 3.4 1.7<br />
Alberta 5 506 42.5 21.7 2.4 0<br />
1975-78 Manitoba 152 100 44.0 25.0 0 2.0<br />
1979 Manitoba 43 410 6.1 9.3 0 1.7<br />
Saskatchewan • 2 1273 14.0 29.0··<br />
1980 Manitoba 51 2154 26.3 6.2 0.04 0.3<br />
Alberta 3 775 25.3 4.4 0 0<br />
Data provided by A.P. Arthur, Agriculture <strong>Canada</strong>, Research Station, Saskatoon .<br />
•• Mainly A. cinerea.<br />
Athrycia cinerea (Coq.) usually was less abundant than B. f1al'eseens when host<br />
populations were low (Table 8). but it may be as abundant in some fields during<br />
outbreaks. A. cinerea is univoltine in the Prairie Provinces. The eggs arc attached to<br />
the integument <strong>of</strong> larvae in the fourth to sixth instars. the larvae usually develop<br />
gregariously, and they mature before the host completes its feeding (Wylie 1977a).
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