Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-28T09:25:04.846Z Has data issue: false hasContentIssue false
  • English
  • Français

EVIDENCE FOR THE EXISTENCE OF AN INTERGRADE POPULATION BETWEEN HYALOPHORA GLOVERI NOKOMIS AND H. COLUMBIA IN NORTHWESTERN ONTARIO (LEPIDOPTERA: SATURNIIDAE)

Published online by Cambridge University Press:  31 May 2012

Lester Köhalmi  and
Peter Moens
Lester Köhalmi
Affiliation:
Department of Biology, York University, Downsview, Ontario
Peter Moens
Affiliation:
Department of Biology, York University, Downsview, Ontario
Get access Rights & Permissions [Opens in a new window]

Abstract

Adult silkmoths captured in northwestern Ontario and tentatively identified as Hyalophora columbia (Smith) were found to resemble H. gloveri nokomis (Brodie) which occurs as far east as Winnipeg, Man. Habitat studies showed that the larvae of the northwestern Ontario moths are not strictly larch feeders as are the larvae of typical H. Columbia.

The dorsal thoracic tubercle colour of typical fifth instar H. Columbia larvae is red. Matings between typical H. Columbia and H. cecropia (L.) have produced fifth instar larvae with only reddish-orange tubercles. However, matings of male moths from northwestern Ontario with H, cecropia females have produced fifth instar larvae with reddish-orange, light orange, or yellow dorsal thoracic tubercles. Further matings of northwestern Ontario males with H. euryalis (Boisd.) and typical H. Columbia females have established the presence in northwestern Ontario of a colour polymorphism of which the phenotypic colour components are red, reddish orange, and yellow.

The fifth instar dorsal thoracic tubercle colour of H. gloveri nokomis larvae is yellow and it is proposed that the yellow tubercle colour of the northwestern Ontario larvae has originated from the influx of genes from the nearby H. gloveri nokomis population.

The evidence presented in this paper points to the existence of an intergrade population between H. gloveri nokomis and H. columbia in northwestern Ontario.

Type
Articles
Information
The Canadian Entomologist , Volume 107 , Issue 8 , August 1975 , pp. 793 - 799
Copyright
Copyright © Entomological Society of Canada 1975

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Brodie, W. 1894. Platysamia columbia nokomis. Biol. Rev. Ont. 1: 103–107.Google Scholar
Collins, M. M. 1973. Notes on the taxonomic status of Hyalophora columbia (Saturniidae). J. Lepid. Soc. 27: 225–235.Google Scholar
Ferguson, D. C. 1972. Bombycoidea (in part), fasc. 20.2B, pp. 243–275. In Dominick, R. B. et al. , The moths of America north of Mexico. Curwen Press, London.Google Scholar
Fernald, C. H. 1878. On the early stages of Samia columbia Smith. Can. Ent. 10: 43–48.Google Scholar
Freedley, W. J. 1908. The early stages of Samia columbia nokomis. Can. Ent. 40: 350–354.CrossRefGoogle Scholar
McGugan, B. M. (compiler). 1958. Forest Lepidoptera of Canada recorded by the Forest Insect Survey, I, Papilionidae to Arctiidae, 76 pp. Publ. 1034, Forest Biol. Div., Can. Dep. Agric.Google Scholar
Packard, A. S. 1914. Monograph of the bombycine moths of North America, III (edited by Cockerell, T. D. A.). Mem. natn. Acad. Sci., No. 12. 516 pp.Google Scholar
Scoggan, H. J. 1957. Flora of Manitoba. Bull. 140, Biol. Ser. 47, National Museum of Canada, Ottawa.Google Scholar
Sweadner, W. R. 1937. Hybridization and phylogeny of the genus Platysamia. Ann. Carnegie Mus. 25: 163–242.CrossRefGoogle Scholar