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REVISION OF NORTH AMERICAN AGABUS LEACH (COLEOPTERA: DYTISCIDAE): LUTOSUS-, OBSOLETUS-, AND FUSCIPENNIS-GROUPS

Published online by Cambridge University Press:  31 May 2012

D.J. Larson
D.J. Larson
Affiliation:
Department of Biology, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1B 3X9
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Abstract

Species of Agabus of the lutosus-, obsoletus-, and fuscipennis-groups, as defined by Larson (1989), are revised. Members of the lutosus- and obsoletus-groups are restricted to the Cordilleran and Great Plains regions of temperate western North America. Within this region, the species of each group are largely parapatric. Three species are assigned to the lutosus-group: A. lutosus LeConte along the Pacific Coast; A. griseipennis LeConte in the Great Basin, Rocky Mountain, and Great Plains regions; and A. rumppi Leech in the southern deserts. Agabus lutosus and A. griseipennis hybridize in the Pacific Northwest; A. lutosus mimus Leech is synonymized with A. lutosus. The obsoletus-group contains five species: A. obsoletus LeConte, A. morosus LeConte, and A. ancillus Fall along the Pacific Coast and the Sierra Nevada Mountains; A. hoppingi Leech in the Sierra Nevada Mountains; and A. obliteratus LeConte, containing two subspecies, A. o. obliteratus and A. o. nectris Leech, new status, with a wide range including the Great Plains and Cordillera but not reaching the Pacific Coast. The four species of the fuscipennis-group, A. ajax Fall, A. coxalis Sharp, A. fuscipennis (Paykull), and A. infuscatus Aubé, are boreal and all except A. ajax are Holarctic. Agabus coxalis is restricted to northwestern North America, the other three species are transcontinental.For each species the following information is provided: synonymy, description, and illustrations of taxonomically important characters; notes on relationships, variation, distribution, and ecology; and a map of North American collection localities. Group diagnoses and keys to the species of each group are presented. A correction to the key to species groups of North American Agabus (Larson 1989) is made with the addition of a couplet to include the obsoletus-group. Lectotypes are designated for A. discolor LeConte and A. obliteratus LeConte.

Résumé

Les espèces d’Agabus des groupes lutosus, obsoletus et fuscipennis, tels que définis par Larson (1989), ont fait l’objet d’une révision. Les espèces des groupes lutosus et obsoletus sont restreintes aux régions de la Cordillère et des Grandes Plaines dans la zone tempérée de l’ouest nord-américain. Dans ces régions, les espèces de chaque groupe sont surtout parapatriques. Trois espèces sont placées dans le groupe lutosus : A. lutosus LeConte, le long de la côte du Pacifique; A. griseipennis LeConte, dans les régions du Grand Bassin, des Rocheuses et des Grandes Plaines; A. rumppi Leech, dans les déserts du sud. Agabus lutosus et A. griseipennis s’hybrident dans la région du nord-ouest; A. lutosus mimus Leech est synonymisée à A. lutosus. Le groupe obsoletus contient cinq espèces : A. obsoletus LeConte, A. morosus LeConte et A. ancillus Fall le long de la côte du Pacifique et dans les montagnes de la Sierra Nevada; A. hoppingi Leech dans les montagnes de la Sierra Nevada; A. obliteratus LeConte, qui compte deux sous-espèces, A. o. obliteratus et A. o. nectris Leech, nouveau statut, très répandues dans les Grandes Plaines et la Cordillère, mais n’atteignant pas la côte du Pacifique. Les quatre espèces du groupe fuscipennis, A. ajax Fall, A. coxalis Sharp, A. fuscipennis (Paykull) et A. infuscatus Aubé, sont boréales et toutes, sauf A. ajax, sont holarctiques. Agabus coxalis est restreinte au nord-ouest de l’Amérique du Nord et les trois autres espèces sont transcontinentales.Pour chacune des espèces on trouvera les informations suivantes : synonymie, description et illustration des caractères diagnostiques; notes sur les liens de parenté, variation, répartition et écologie; une carte des sites de récolte en Amérique du Nord est également donnée. La diagnose du groupe et des clés d’identification permettront de reconnaître les espèces de chaque groupe. Des corrections sont apportées à la clé des groupes d’espèces du genre Agabus en Amérique du Nord (Larson 1989) et un couplet est ajouté pour permettre l’intégration du groupe obsoletus. Des lectotypes d’A. discolor LeConte et d’A. obliteratus LeConte ont été choisis.

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Type
Articles
Information
The Canadian Entomologist , Volume 126 , Issue 1 , February 1994 , pp. 135 - 181
Copyright
Copyright © Entomological Society of Canada 1994

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References

REFERENCES

Aubé, C. 1838. Species general des coleopteres de la collection de M. le comte Dejean. VI. Paris. 804 pp.Google Scholar
Carr, J.L., and Leech, H.B.. 1966. The rediscovery of Agabus audeni Wallis, and a note on Agabus coxalis Sharp (Coleoptera: Dytiscidae). The Canadian Entomologist 98: 544–550.CrossRefGoogle Scholar
Crotch, G.R. 1873. Revision of the Dytiscidae of the United States. Transactions of the American Entomological Society 4: 383–424.Google Scholar
Fall, H.C. 1922. A Review of the North American Species of Agabus. Privately printed. Mount Vernon, NY. 36 pp.Google Scholar
Galewski, K. 1972. The second and third stage larvae of Agabus fuscipennis (Payk.) (Coleoptera, Dytiscidae). Bulletin de l'Academie Polonaise des Sciences Serie des Sciences Biologiques 20: 237–240.Google Scholar
Gemminger, M., and von Harold, E.. 1868. Catalogus coleopterorum hucusque synonymicus et systematicus, Volume 2. Monachii. pp. 425–752.CrossRefGoogle Scholar
Gueorguiev, V.B. 1972. 235, Haliplidae, Dytiscidae, Gyrinidae IV. Ergebnisse der Zoologischen Forschungen von Dr. Z. Kaszab in der Mongolei. Faunistische Abhandlungen Staatliches Museum fur Tierkunde in Dresden 4: 31–44.Google Scholar
Harris, T.W. 1828. Contributions to entomology. No. VI. New England Farmer 7: 164.Google Scholar
Hatch, M.H. 1953. The Beetles of the Pacific Northwest. Part 1: Introduction and Adephaga. University of Washington Publications in Biology 16: 340 pp.Google Scholar
Huggert, L., and Nilsson, A.N.. 1978. Anteckningar om tre dykararter. Entomologisk Tidskrift 99: 25–29.Google Scholar
Larson, D.J. 1975. The predaceous water beetles (Coleoptera: Dytiscidae) of Alberta: Systematics, natural history and distribution. Quaestiones Entomologicae 11: 245–498.Google Scholar
Larson, D.J. 1985. Structure in temperate predaceous diving beetle communities (Coleoptera: Dytiscidae). Holarctic Ecology 8: 18–32.Google Scholar
Larson, D.J. 1989. Revision of North American Agabus Leach (Coleoptera: Dytiscidae): Introduction, key to species groups, and classification of the ambiguus-, tristis-, and arcticus-groups. The Canadian Entomologist 121: 861–919.Google Scholar
Larson, D.J. 1991. Revision of North American Agabus Leach (Coleoptera: Dytiscidae): elongatus-, zetterstedti-, and confinis-groups. The Canadian Entomologist 123: 1239–1317.Google Scholar
Larson, D.J., and Nilsson, A.N.. 1985. The Holarctic species of Agabus (sensu lato) Leach (Coleoptera: Dytiscidae). The Canadian Entomologist 117: 119–130.CrossRefGoogle Scholar
LeConte, J.L. 1852. Descriptions of new species of Coleoptera from California. Annals of the Lyceum of Natural History of New York 5: 125–216.Google Scholar
LeConte, J.L. 1853. p. 31 in Melsheimer, F.E., Catalogue of the Described Coleoptera of the United States. Smithsonian Institution, Washington, DC. 174 pp.Google Scholar
LeConte, J.L. 1858. Catalogue of Coleoptera of the regions adjacent to the boundary line between the United States and Mexico. Journal of the Academy of Natural Sciences of Philadelphia 4: 9–42.Google Scholar
LeConte, J.L. 1859. The Coleoptera of Kansas and eastern New Mexico. Smithsonian Contributions to Knowledge 11: 1–66.Google Scholar
Leech, H.B. 1942. New or insufficiently known Nearctic species and subspecies of Agabus (Coleoptera, Dytiscidae). The Canadian Entomologist 74: 125–136.CrossRefGoogle Scholar
Leech, H.B. 1964. A new species of Agabus from the Death Valley region of California (Coleoptera: Dytiscidae). Coleopterists Bulletin 18: 79–82.Google Scholar
Leech, H.B., and Chandler, H.P.. 1956. Aquatic Coleoptera. pp. 293–371 in Usinger, R.L., Aquatic Insects of California. University of California Press, Berkeley, CA. 508 pp.Google Scholar
Nilsson, A.N. 1982. A key to the identification of the known third-stage larvae of the Fennoscandian species of the genus Agabus (Coleoptera: Dytiscidae). Entomologica Scandinavica 13: 333–338.CrossRefGoogle Scholar
Nilsson, A.N. 1986. Life cycles and habitats of the northern European Agabini (Coleoptera, Dytiscidae). Entomologica Basiliensia 11: 391–417.Google Scholar
Nilsson, A.N. 1987. A key to the first-instar larvae of Fennoscandian Agabus (Coleoptera: Dytiscidae). Fauna Norvegica, Ser. B 34: 131–137.Google Scholar
Nilsson, A.N. 1990. Revisional notes on selected east Palaearctic species of Agabus Leach (Coleoptera, Dytiscidae). Entomologisk Tidskrift 111: 149–161.Google Scholar
Nilsson, A.N., and Persson, S.. 1989. The distribution of predaceous diving beetles (Coleoptera: Noteridae, Dytiscidae) in Sweden. Entomologica Basiliensia 13: 59–146.Google Scholar
Paykull, G. 1798. Fauna Suecica: Insects, Vol. 1. Upsaliae. 358 pp.Google Scholar
Sharp, D. 1882. On aquatic carnivorous Coleoptera or Dytiscidae. Scientific Transactions of the Royal Dublin Society 2: 1–1003.Google Scholar
Wallis, J.B. 1973. The hydradephaga of Manitoba and Minnesota. Quaestiones Entomologicae 9: 99–114.Google Scholar
Zaitzev, F.A. 1953. Fauna of the U.S.S.R., Vol. 4. Amphizoidae, Hygrobiidae, Dytiscidae, Gyrinidae. English Translation (1972), Israel Program for Scientific Translations. Jerusalem. 401 pp.Google Scholar
Zimmermann, A. 1934. Monographie der palaarktischen Dytisciden V. Colymbetinae. (1. Teil: Copelatini, Agabini: Gattung Gaurodytes Thoms.). Koleopterologische Rundschau 20: 138–214.Google Scholar