Enzyme electrophoresis shows that Heptagenia dalecarlica Bengtsson and H. sulphurea (Müller) (Ephemeroptera: Heptageniidae) are bona species

in Insect Systematics & Evolution
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Abstract

Heptagenia dalecarlica and H. sulphurea are a species pair, the adults of which are difficult to distinguish; likewise the species diagnostic criteria of the nymphs have been considered doubtful. Population samples from these two species, and from H. fuscogrisea and H. joernensis were studied with enzyme electrophoresis. The results show that H. sulphurea and H. dalecarlica have taxon-specific alleles indicating that they are closely related but reproductively isolated species. They are only distantly related to the other two Heptagenia species examined.

Enzyme electrophoresis shows that Heptagenia dalecarlica Bengtsson and H. sulphurea (Müller) (Ephemeroptera: Heptageniidae) are bona species

in Insect Systematics & Evolution

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