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

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).

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

The Canadian Entomologist ◽

10.4039/ent91128-2 ◽

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.

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THE DURRA STEM BORER Sesamia cretica Led. A NEW PROBLEM IN IMPORTED EUROPEAN BROOM CORN

The Canadian Entomologist ◽

10.4039/ent79180-9 ◽

1947 ◽

Vol 79 (9-10) ◽

pp. 180-190 ◽

Cited By ~ 1

Author(s):

H. A. U. Monro

Keyword(s):

North America ◽

European Corn Borer ◽

Insect Pests ◽

Stem Borer ◽

Appreciable Effect ◽

Plant Quarantine ◽

Corn Borer ◽

Normal Host ◽

Sesamia Cretica ◽

Pyrausta Nubilalis

Importations into North America of shipments of broom corn (Sorghum vugare var. technicum) have always been a source of anxiety to plant quarantine officials. It is well known that the European corn borer, Pyrausta nubilalis Hbn., was almost certainly introduced onto this continent in this commodity (22), a surmise which receives perennial support from the continued finding of this species in consignments from various parts of Europe. Broom corn is usually imported in bales weighing from 100 to 250 pounds each, (Figures 1 and 2) which contain both the brush and anything up to 12 inches of stalk necessary for the proper binding of the broom. It is interesting to note that in the country of origin, after the broom corn is harvested, it is dried and curcd and is then usually subected to the fumes of burning sulphur overnight in a closed room in order to bring about, through bleaching, a uniform yellowish colour desired in the trade. None of these treatments have any appreciable effect on the populations of living borers found in the stalks. In addition to insect pests which feed in or on broom corn as a normal host, other species may use the borings of the normal pests as sites of hibernation or pupation. Under some conditions, no doubt, stalks may be left lying in the field for some time prior to harvesting, and thus constitute a refuge for many potential pests.

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APLOMYA CAESAR (ALDRICH), A TACHINID PARASITE OF THE EUROPEAN CORN BORER

The Canadian Entomologist ◽

10.4039/ent77157-9 ◽

1945 ◽

Vol 77 (9) ◽

pp. 157-167 ◽

Cited By ~ 8

Author(s):

Geo. Wishart

Keyword(s):

North America ◽

European Corn Borer ◽

Corn Borer ◽

Pyrausta Nubilalis ◽

Tachinid Parasite

The European corn borer, Pyrausta nubilalis Hubn., has been remarkably free from attack by parasites native to North America. Only two, Labrorychus prismaticus Nort. and Aplomya caesar (Aldrich), have occurred regularly in Canada. Of these Aplomya caesar has been by far the more abundant on the borer. Its presence on corn borer was first noted by Vinal and Caffrey (12) in 1919, at which time it was identified as Exorista nigripalpis Townsend.

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European Corn Borer (Lepidoptera: Pyralidae) Infestations: Relating Captures in Pheromone and Black-light Traps in Southern Minnesota Cornfields

Journal of Economic Entomology ◽

10.1093/jee/77.6.1445 ◽

1984 ◽

Vol 77 (6) ◽

pp. 1445-1448 ◽

Cited By ~ 9

Author(s):

David E. Legg ◽

H. C Chiang

Keyword(s):

European Corn Borer ◽

Light Traps ◽

Corn Borer ◽

Black Light ◽

Lepidoptera Pyralidae

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Mechanisms of Resistance in Corn to Leaf Feeding by Southwestern Corn Borer and European Corn Borer (Lepidoptera: Pyralidae)

Journal of Economic Entomology ◽

10.1093/jee/82.3.919 ◽

1989 ◽

Vol 82 (3) ◽

pp. 919-922 ◽

Cited By ~ 13

Author(s):

Frank M. Davis ◽

Sen Seong Ng ◽

Paul W. Williams

Keyword(s):

European Corn Borer ◽

Mechanisms Of Resistance ◽

Corn Borer ◽

Lepidoptera Pyralidae ◽

Southwestern Corn Borer

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EVIDENCE OF A MALE SEX PHEROMONE IN THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (HÜBNER) (LEPIDOPTERA: PYRALIDAE)

The Canadian Entomologist ◽

10.4039/ent124113-1 ◽

1992 ◽

Vol 124 (1) ◽

pp. 113-116 ◽

Cited By ~ 19

Author(s):

Lucie Royer ◽

Jeremy N. McNeil

Keyword(s):

Sex Pheromone ◽

Mating System ◽

Mating Success ◽

Ostrinia Nubilalis ◽

European Corn Borer ◽

Male Pheromone ◽

Corn Borer ◽

Male Sex Pheromone ◽

Lepidoptera Pyralidae ◽

Male Sex

AbstractEuropean corn borer males have hair pencils located ventrally on the 8th sternite and these are extruded when a male approaches a calling female. The fact that (i) antennectomized females mated significantly less than both intact controls and individuals subjected to other forms of surgery, and (ii) males with hair pencils removed had a significantly lower mating success than control males, suggests that a male pheromone is involved in the mating system of the European corn borer.

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