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NYMPHS AND IMAGOES OF FOUR NORTH AMERICAN SPECIES OF PROCLOEON BENGTSSON WITH DESCRIPTION OF A NEW SPECIES (EPHEMEROPTERA, BAETIDAE)

Published online by Cambridge University Press:  31 May 2012

Robert G. Lowen
Affiliation:
Department of Fisheries and Oceans, Central and Arctic Region, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba, Canada R3T 2N6
John F. Flannagan
Affiliation:
Department of Fisheries and Oceans, Central and Arctic Region, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba, Canada R3T 2N6

Abstract

Descriptions of Procloeon rubropictum (McD.), P. quaesitum (McD.), and P. rufostrigatum (McD.) are expanded to include features not previously published. A description of the nymph of P. quaesitum is given for the first time. Procloeon irrubrum sp.nov. is described from nymphs and female imagoes. From our interpretation of preliminary data, it is possible that P. rufostrigatum and P. rubropictum form one species group; P. quaesitum is included with P. pennulatum (Eaton) in another. Procloeon irrubrum does not fit either species group but shows some affinities to the P. rufostrigatum group. Some characters for separating the nymphs of Procloeon and Centroptilum are given.

Résumé

Les descriptions de Procloeon rubropictum (McD.), de P. quaesitum (McD.) et de P. rufostrigatum (McD.) ont été complétées par addition de caractéristiques inédites. La description de la larve de P. quaesitum est présentée pour la première fois. Procloeon irrubrum sp.nov. est décrit ici après examen de larves et de femelles adultes. D’après l’analyse des données préliminaires, nous croyons que P. rufostrigatum et P. rubropictum constituent un groupe d’espèces et que P. quaesitum appartient à un autre groupe qui comprend aussi P. pennulatum (Eaton). Procloeon irrubrum ne correspond à aucun de ces deux groupes, mais comporte certaines affinités avec le groupe P. rufostrigatum. Les caractéristiques qui permettent de séparer les larves de Procloeon des larves de Centroptilum sont présentées.

[Traduit par la rédaction]

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1992

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