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The Genera and Species of the Nearctic Dolerini (Symphyta: Tenthredinidae: Selandriinae): Classification and Phylogeny

Published online by Cambridge University Press:  31 May 2012

Henri Goulet*
Affiliation:
Biosystematics Research Centre, Agriculture Canada, Ottawa, Ontario, Canada K1A 0C6
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Abstract

The Dolerini consist of two genera (Dolerus Panzer and Prionourgus Goulet). Prionourgus consists of one species. Dolerus is subdivided into one species group and seven subgenera (nitens group, Neodolerus Goulet, Achaetoprion Goulet, Oncodolerus Goulet, Loderus Konow, Dicrodolerus Goulet, Dolerus s. str. Panzer, and Dosytheus Leach), and consists of 72 Nearctic species.Described as new are one genus [Prionourgus (type species: Dolerus salmani Ross)], four subgenera [Neodolerus (type species: Dolerus sericeus Say), Achaetoprion (type species: Dosytheus maculicollis Norton), Dicrodolerus (type species: Dosytheus apricus Norton), and Oncodolerus (type species: Loderus acidus MacGillivray)], 23 species [Dolerus abstrusus (type locality: Moose Factory, Ontario), Dolerus acer (type locality: Merritt Creek, Klamath County, Oregon), Dolerus aeneiceps (type locality: Robson, British Columbia), Dolerus alutaceus (type locality: Seymour, Illinois), Dolerus californicus (type locality: 1 mi. E Emigrant Gap, Placer County, California), Dolerus columbianus (type locality: Robson, British Columbia), Dolerus comatus (type locality: Pullman, Washington), Dolerus crinitus (type locality: Forestville, California), Dolerus decussatus (type locality: Chaffeys Locks, Ontario), Dolerusfaber (type locality, 25.5 mi. W Lakeview, Oregon), Dolerusfalcatus (type locality: Cheltenham, Pennsylvania), Dolerus fulgens (type locality: Huntingdon, Pennsylvania), Dolerus hebes (type locality: Marmora, Ontario), Dolerus incisus (type locality: Reindeer Depot, Northwest Territories), Dolerus inermis (type locality: Moscow, Idaho), Dolerus interior (type locality: Pullman, Washington), Dolerus laevis (type locality: Glacier Point, Yosemite National Park, California), Dolerus maritimus (type locality: Chase Lake, Snohomish County, Washington), Dolerus mimus (type locality: Gatineau Park, Quebec), Dolerus recurvans (type locality: Strawberry, California), Dolerus rossi (type locality: Fredericton, New Brunswick), Dolerus tacoma (type locality: Mount Rainier, Washington), and Dolerus urustus (type locality: Tuscarora, Nevada)], and two subspecies [Dolerus elderi pacificus (type locality: Sumas Prairie, British Columbia) and Dolerus konowi glacialis (type locality: Yakutat, Alaska)]. A new name, Dolerus sayi, is proposed for D. collaris Say, a junior secondary homonym.Treatment of each taxon includes synonymic list, diagnostic combination, descriptions, taxonomic notes, origin of new epithet, host and/or habitat, geographic distribution, and notes on affinities. In addition, under each species there is a discussion of geographical variation. Important character states are illustrated and geographical distribution is mapped for all species. Relationships between species of Dolerini are reconstructed from the analysis of structural characters using principles of cladistic systematics. Finally a classification is proposed for higher taxa of the Dolerini based on the reconstructed phylogeny.

Résumé

Nous reconnaissons deux genres (Dolerus Panzer et Prionourgus Goulet) dans la tribu des Dolerini. Prionourgus n'a qu'une seule espèce. Dolerus se divise en un groupe d'espèces et sept sous-genres (le groupe nitens, Neodolerus Goulet, Achaetoprion Goulet, Oncodolerus Goulet, Loderus Konow, Dicrodolerus Goulet, Dolerus s. str. Panzer et Dosytheus Leach), et consiste en 72 espèces.

Nous décrivons les nouveaux taxa suivants : le genre Prionourgus (espèce-type : Dolerus salmani Ross), quatre sous-genres [Neodolerus (espèce-type : Dolerus sericeus Say), Achaetoprion (espèce-type : Dosytheus maculicollis Norton), Dicrodolerus (espèce-type : Dosytheus apricus Norton) et Oncodolerus (espèce-type : Loderus acidus MacGillivray), 23 espèces [Dolerus abstrusus (localité-type : Moose Factory, Ontario), Dolerus acer (localité-type : Merritt Creek, Klamath County, Orégon), Dolerus aeneiceps (localité-type : Robson, Colombie-Britannique), Dolerus alutaceus (localité-type : Seymour, Illinois), Dolerus californicus (localité-type : 1 mi. est Emigrant Gap, Placer County, Californie), Dolerus columbianus (localité-type : Robson, Colombie-Britannique), Dolerus comatus (localité-type : Pullman, Washington), Dolerus crinitus (localité-type : Forestville, Californie), Dolerus decussatus (localité-type : Chaffeys Locks, Ontario), Dolerus faber (localité-type : 25.5 mi. ouest Lakeview, Orégon), Dolerus falcatus (localité-type : Cheltenham, Pennsylvanie), Dolerus fulgens (localité-type : Huntingdon, Pennsylvanie), Dolerus hebes (localité-type : Marmora, Ontario), Dolerus incisus (localité-type : Reindeer Depot, Territoires du Nord-Ouest), Dolerus inermis (localité-type : Moscow, Idaho), Dolerus interior (localité-type : Pullman, Washington), Dolerus laevis (localité-type : Glacier Point, Parc national de Yosemite, Californie), Dolerus maritimus (localité-type : Chase Lake, Snohomish County, Washington), Dolerus mimus (localité-type : Parc de la Gatineau, Québec), Dolerus recurvans (localité-type : Strawberry, Californie), Dolerus rossi (localité-type : Frédéricton, Nouveau-Brunswick), Dolerus tacoma (localité-type : Mont Rainier, Washington) et Dolerus urustus (localité-type : Tuscarora, Névada)], et deux sous-espèces [Dolerus elderipacificus (localité-type : Sumas Prairie, Colombie-Britannique) et Dolerus konowi glacialis (localité-type : Yakutat, Alaska)]. Nous proposons un nouveau nom, Dolerus sayi, comme remplacement pour D. collaris un homonyme secondaire plus récent.

Pour chaque taxon traité dans ce travail, les informations suivantes sont incluses : liste des synonymes, diagnose, descriptions, notes taxonomiques, notes sur l'hôte et/ou l'habitat, l'origine des noms nouveaux proposés, répartition géographique, et notes des relations d'affinité. En plus pour chaque espèce, nous incluons des notes sur la variation géographique. Les caractères morphologiques importants de même que la répartition géographique de toutes les espèces sont illustrés. Nous reconstruisons les lignées phylogénétiques entre les espèces à partir de l'analyse des données structurales à l'aide des principes de la cladistique. Finalement, nous proposons une classification pour les taxa supérieurs à partir de la phylogénie reconstruite.

Type
Research Article
Copyright
Copyright © Entomological Society of Canada 1986

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