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Problems of Evolution and Speciation in Adelgidae (Homoptera: Aphidoidea)

Published online by Cambridge University Press:  31 May 2012

A. W. Steffan
A. W. Steffan
Affiliation:
Entomology Research Institute, Canada Department of Agriculture, Ottawa, Ontario
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Extract

Heterogenetic holocyclic species in Adelgidae consist of the five generations: sexuales (♂, ♀), fundatrix (F), alata-migrans (M), hiemosistens (H), alata- remigrans or sexupara (R), of which the (♂, ♀) and (F) live on the primary host (Pinaceae: Picea), (H) on the secondary host (Pinaceae: Pinus, Abies, Tsuga, Pseudotsuga or Larix), and the two winged generations (M) and (R) maintain the migration cycle from and to the other host. The range of such a species is controlled by the occurrence together of both the primary and the secondary host. It seems that the evolution of the Aldelgidae has been closely associated with the phylogeny and distribution of the conifer-family Pinaceae, and that speciation of the parasite has followed the speciation of the host plant.

Type
Articles
Information
The Canadian Entomologist , Volume 96 , Issue 1-2 , February 1964 , pp. 155 - 157
Copyright
Copyright © Entomological Society of Canada 1964

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References

Steffan, A. W. 1961. Die Stammes — und Siedlungsgschichte des Artenkreises Sacchiphantes viridis (Ratzeburg 1843) (Adelgidae Aphidoidea). Zoologica, Stuttgart 109: 1–113.Google Scholar
Steffan, A. W. 1963. Zur systematischen und phylogenetischen Stellung der Agamospecies in den Adelgidae-Genera (Homoptera: Aphidoidea). Verh. dtsch. zool. Ges., Wien 1962: 640–655.Google Scholar
Steffan, A. W. 1963. Ein Beitrag zum Problem der Artwerdung. Wie entstanden die verschiedenen Artenformen bei den Fichtengallenläusen? Umschau 63: 733–737. 810–815.Google Scholar