Evaluation of a Sequential Egg Mass Sampling System for Predicting Second-Generation Damage by European Corn Borer (Lepidoptera: Pyralidae) in Field Corn in North Carolina

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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Evaluation of a Management Model for Second-Generation European Corn Borer (Lepidoptera: Pyralidae) for Use in Kansas

Journal of Economic Entomology ◽

10.1093/jee/81.1.335 ◽

1988 ◽

Vol 81 (1) ◽

pp. 335-343 ◽

Cited By ~ 8

Author(s):

D. D. Calvin ◽

S. M. Welch ◽

F. L. Poston

Keyword(s):

European Corn Borer ◽

Second Generation ◽

Management Model ◽

Corn Borer ◽

Lepidoptera Pyralidae

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A METHOD OF DETECTING OVIPOSITION IN EUROPEAN CORN BORER MOTHS, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), AND ITS RELATION TO SUBSEQUENT LARVAL DAMAGE TO PEPPERS

The Canadian Entomologist ◽

10.4039/ent110487-5 ◽

1978 ◽

Vol 110 (5) ◽

pp. 487-493 ◽

Cited By ~ 3

Author(s):

W.M. Elliott ◽

R.J. McClanahan ◽

J. Founk

Keyword(s):

Ostrinia Nubilalis ◽

European Corn Borer ◽

Second Generation ◽

Linear Equations ◽

Light Trap ◽

Yellow Band ◽

Corn Borer ◽

Green Pepper ◽

Lepidoptera Pyralidae

AbstractThe formation of a yellow band inside the stalk of each ovariole was a good indicator that a female European corn borer had laid eggs. The absence of these bands was less reliable as an indicator that no eggs had been laid, probably due to the time taken for the bands to form. The numbers of moths accumulating in a light trap over a week at Harrow, Ontario, and the numbers of females estimated to have laid eggs correlated significantly with the numbers of larvae developing in nearby green pepper plots 3, 4, and 5 weeks later during second generation flights. This enabled linear equations for forecasting pepper damage to be developed, in which the dissection data was more useful than the total moth catch alone.

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Dispersal and Survival of Early Instars of European Corn Borer (Lepidoptera: Pyralidae) in Field Corn

Journal of Economic Entomology ◽

10.1093/jee/83.3.831 ◽

1990 ◽

Vol 83 (3) ◽

pp. 831-836 ◽

Cited By ~ 41

Author(s):

S. E. Ross ◽

K. R. Ostlie

Keyword(s):

European Corn Borer ◽

Corn Borer ◽

Field Corn ◽

Lepidoptera Pyralidae

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EFFECTS OF A NATURAL BIVOLTINE STRAIN OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), ON GRAIN CORN YIELDS IN SOUTHWESTERN ONTARIO, 1973–77

The Canadian Entomologist ◽

10.4039/ent113585-7 ◽

1981 ◽

Vol 113 (7) ◽

pp. 585-591

Author(s):

W. H. Foott ◽

P. R. Timmins

Keyword(s):

Moisture Content ◽

Ostrinia Nubilalis ◽

European Corn Borer ◽

First Generation ◽

Second Generation ◽

Yield Losses ◽

Corn Borer ◽

Lepidoptera Pyralidae

AbstractA 5-year study of a bivoltine strain of the European corn borer, Ostrinia nubilalis (Hübner), showed that first-generation moths deposited more eggs on early-planted corn, whereas second-generation moths oviposited more frequently on late-planted corn. The second generation was much larger than the first generation and caused the greater reduction in yield, regardless of whether the yields were based on physiological losses or a combination of physiological losses and dropped ears. It was shown that delay of harvest beyond the time that moisture content of the corn was sufficiently low for machine harvesting could result in severe yield losses from broken stalks and dropped ears during autumn storms.

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