First Record of Perilitus coccinellae (Schrank) (Hymenoptera: Braconidae) as a Parasite of Coccinella novemnotata Hbst. and Coleomegilla maculata lengi Timb. (Coleoptera: Coccinellidae) in Canada

1959 ◽  
Vol 91 (1) ◽  
pp. 63-64 ◽  
Author(s):  
Marcel Hudon
Keyword(s):  
European Corn Borer ◽  
First Record ◽  
Coleomegilla Maculata ◽  
Corn Borer ◽  
Experimental Plots

In 1955 and 1956, while sampling corn stalks for larvae of the European corn borer in experimental plots at St. Jean, the author noted 23 adults of Coleomegilla maculata lengi Timb. and two adults of Coccinella novemnotata Hbst. that were parasitized and attached to the upper surfaces of corn leaves. Each beetle was astride a freshly formed cocoon and was held by a network of silk; many were alive when found. The parasite cocoons and the hosts were placed in closed petri dishesfor observation. The parasites that emerged were identified by Dr. W. R. M. Mason, Entomology Division, Ottawa,as Perilitus coccinellae (Schrank) (= Dinocampus terminatus (Nees).

Scambus pterophori (Ashm.) (Hymenoptera: Ichneumonidae), a New Parasite of the European Corn Borer, Pyrausta nubilalis (Hbn.) (Lepidoptera: Pyralidae), in Canada

1959 ◽  
Vol 91 (2) ◽  
pp. 128-128
Author(s):  
Marcel Hudon
Keyword(s):  
European Corn Borer ◽  
Second Generation ◽  
Petri Dish ◽  
First Record ◽  
Corn Borer ◽  
Lepidoptera Pyralidae ◽  
Pyrausta Nubilalis ◽  
Experimental Plots

In late August, 1957, a parasitized second-generation pupa of Pyrausta nubilalis (Hbn.) was observed in silks of an immature corn ear in the experimental plots at St. Jean. The pupa was incubated at 75°F. in a petri dish, and two weeks later an ichneumonid parasite emerged and was identified by Mr. G. S. Walley, Entomology Division, Ottawa, as Scambus pterophori (Ashm.). Asecond generation of P. nubilalis is very unusual in the St. Jean area. This is apparently the first record of this ichneumonid as a parasite of P. nubilalis in Canada.

Dibrachys cavus (Wlkr.) (Hymenoptera: Pteromalidae), a New Parasite of the European Corn Borer, Pyrausta nubilalis (Hbn.) (Lepidoptera: Pyralidae), in Canada

1956 ◽  
Vol 88 (1) ◽  
pp. 25-25
Author(s):  
Marcel Hudon
Keyword(s):  
North America ◽  
European Corn Borer ◽  
Adult Stage ◽  
Corn Borer ◽  
Lepidoptera Pyralidae ◽  
Pyrausta Nubilalis ◽  
Experimental Plots

During the latter part of June, 1955, a larva of the European corn borer, Pyrausta nubilalis (Hbn.), dissected from overwintered corn stalks in experimental plots at St. Jean was observed to be parasitized by hymenopterous larvae. These were reared to the adult stage and were then identified by Dr. O. Peck, Entomology Division, Ottawa, as of Dibrachys cavus (Wlkr.). This parasite has only once been reported from North America (Blickenstaff et al., 1953, p. 377) and once from Russia (Thompson, 1946, p. 517).

Note on Occurrence of Horogenes punctorius (Roman) (Hymenoptera: Ichneumonidae), a Parasite of the European Corn Borer, Ostrinia nubilalis (Hbn.) (Lepidoptera: Pyralidae), in Southwestern Ontario

1959 ◽  
Vol 91 (9) ◽  
pp. 579-580 ◽  
Author(s):  
H. B. Wressell ◽  
G. Wishart
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
First Record ◽  
Essex County ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

In a survey of infestation by the European corn borer, Ostrinia nubilatis (Hbn.), in Essex County, Ontario, in 1957, officers of the Chatham laboratory found several hymenopterous pupae associated with dead borers. Adults emerged in the laboratory and were identified by Mr. G. S. Walley, Entomology Division, Ottawa, as of Horogenes punctorius (Roman), an imported parasite of the borer. This is the first record of its establishment in Canada.

Itoplectis conquisitor (Say) (Hymenoptera: Ichneumonidae), a New Parasite of the European Corn Borer, Ostrinia nubilalis (Hübner) (Lepidoptera: Pyralidae), in Canada

1966 ◽  
Vol 98 (12) ◽  
pp. 1340-1341
Author(s):  
Marcel Hudon
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
First Record ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

AbstractThe capture of Itoplectis conquisitor (Say) is being reported as the first record of this ichneumonid as a parasite of the European corn borer Ostrinia nubilalis (Hübner) in Canada.

INUNDATIVE RELEASE OF TRICHOGRAMMA BRASSICAE BEZDENKO (HYMENOPTERA: TRICHOGRAMMATIDAE) FOR CONTROL OF EUROPEAN CORN BORER IN SWEET CORN

1994 ◽  
Vol 126 (2) ◽  
pp. 291-301 ◽  
Author(s):  
Dicky S. Yu ◽  
J. Robert Byers
Keyword(s):  
European Corn Borer ◽  
Sweet Corn ◽  
Potential Method ◽  
Trap Catch ◽  
Trichogramma Brassicae ◽  
Corn Borer ◽  
Inundative Release ◽  
Southern Alberta ◽  
Experimental Plots ◽  
Trichogramma Brassicae Bezdenko

AbstractInundative release of Trichogramma brassicae Bezdenko for control of European corn borer was tested in experimental plots in 1991 and 1992 in southern Alberta, Canada, to determine its effectiveness as a potential method of control in sweet corn. The tests were conducted in 1-ha plots, in three different fields of irrigated sweet corn each year, at a release level of about 196 000 wasps per ha. The reduction in European corn borer damage in the release plots ranged from 85 to 87% in 1991 and from 45 to 95% in 1992. The reduction in damage was not significantly different in fields with 25 and 49 release points. General area degree-day accumulation for postdiapause development was not adequate to determine the timing of release for individual fields because European corn borer phenology varied among fields. Total moth catch in pheromone traps, however, was directly related to the number of plants damaged by European corn borer, and releases near the time of peak trap catch produced the greatest reduction in damage.

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