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

1945 ◽  
Vol 77 (9) ◽  
pp. 157-167 ◽  
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.

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).

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

1947 ◽  
Vol 79 (9-10) ◽  
pp. 180-190 ◽  
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.

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.

Ecotypes of the European Corn Borer 1 in North America 234

1975 ◽  
Vol 4 (5) ◽  
pp. 753-760 ◽  
Author(s):  
W. B. Showers ◽  
H. C. Chiang ◽  
A. J. Keaster ◽  
R. E. Hill ◽  
G. L. Reed ◽  
...  
Keyword(s):  
North America ◽  
European Corn Borer ◽  
Corn Borer

On a new Species of Ephialtes (Hym., Ichneumonidae) parasitising the Codling Moth

1942 ◽  
Vol 33 (3) ◽  
pp. 171-174 ◽  
Author(s):  
J. F. Perkins
Keyword(s):  
New Species ◽  
European Corn Borer ◽  
Cydia Pomonella ◽  
British Museum ◽  
Codling Moth ◽  
Species Group ◽  
Type Specimens ◽  
Corn Borer ◽  
Pyrausta Nubilalis ◽  
A New Species

In 1939 I dealt with two species of Ephialtes which parasitise the codling moth, Cydia pomonella, L., namely E. caudatus, Ratz., and E. crassiseta, Thoms., and showed how they differed from E. punctulatus, Ratz. (=extensor, Tasch.) with which species they had formerly been confused. During 1940, F. J. Simmonds, of the Imperial Institute of Entomology, sent to the British Museum a series of a species of Ephialtes bred from this same host in the south of France. This is a new species, and it was previously known to me only from a single female which had been bought by D. S. Wilkinson from O. Schmiedeknecht, who had incorrectly named it Pimpla roborator, F. In fact, this new species does not belong to the same species group as Ephialtes (Exeristes) roborator, F., Grav. (=Pimpla roborator, F., Schmied.), which is a well-known parasite of the European Corn Borer (Pyrausta nubilalis, Hb.) and also parasitises many other hosts.As there has been considerable confusion in the synonymy and interpretation of E. roborator, F., it seems advisable to give notes on the relevant type specimens seen by me. It has been impossible to find the type of Ichneumon roborator, F. Gravenhorst's interpretation of this very variable species has therefore been taken. The description given by Schmiedeknecht in his Opuscula Ichneumonologica is adequate for the recognition of the female ; the male is very distinct, having a tubercle in the middle of the clypeus, a character unknown in any other described European species. Pimpla cicatricosa, Ratz., which is given by Schmiedeknecht as a synonym of P. roborator, F., is a distinct species.

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