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Type: Articles
Published: 2012-03-16
Page range: 35–52
Abstract views: 29
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Phylogeny and description of Eknomia, a morphologically unusual new genus of Neotropical Cryptinae (Hymenoptera, Ichneumonidae), with three new species

Universidade Federal do Espírito Santo, Avenida Marechal Campos 1468, Eucalipto, Vitória, ES, Brazil, 29043-900
Universidade Federal do Espírito Santo, Avenida Marechal Campos 1468, Eucalipto, Vitória, ES, Brazil, 29043-900
Hymenoptera Phygadeuontinae Cryptini implied weighting pan traps

Abstract

The Cryptini Eknomia Santos et Aguiar gen. nov. is proposed, described, and cladistically compared with representativespecies of 40 outgroup genera from twelve cryptine subtribes. A total of 98 morphological characters were evaluated. Allanalyses, conducted in TNT under implied and equal weighting, clearly suggest that Eknomia is a monophyletic groupand can be treated as a distinct genus. Its likely sister group, however, varied among different analyses and could not beascertained. The relationships of the new genus are therefore unclear, and because of this it is not assigned to any of thecurrently recognized subtribes. Eknomia can be diagnosed mainly by the anterior transverse carina of propodeum entirelyabsent; propodeum more or less uniformly strigate; clypeus almost entirely flattened; ovipositor stout, with compressed,minutely serrate flange at apex of dorsal valve, subapically crossed by a subvertical line; first metasomal spiracle placedat tergite midlength or nearly so; and hind margin of metanotum with tooth-like projections. The species E. nigra Santoset Aguiar, sp. nov., E. rubra Santos et Aguiar, sp. nov. and E. propodeator Santos et Aguiar, sp. nov. are described and illustrated. The genus is recorded from Colombia to southern Brazil.

References

  1. Aguiar, A.P. (2005) An accurate procedure to describe colors in taxonomic works, with an example from Ichneumonidae (Hymenoptera). Zootaxa, 1008, 31–38.

    Aguiar, A.P. & Gibson, G.A.P. (2010) The spatial complexity in describing leg surfaces of Hymenoptera (Insecta), the problem and a proposed solution. Zootaxa, 2415, 54–62.

    Aguiar, A.P. & Santos, B.F. (2010) Discovery of potent, unsuspected sampling disparities for Malaise and Möricke traps, as shown for Neotropical Cryptini (Hymenoptera, Ichneumonidae). Journal of Insect Conservation, 14, 199–206.

    Gauld, I.D. (1984) An introduction to the Ichneumonidae of Australia. British Museum (Natural History), London. 413 pp.

    Gauld, I.D. (2006) Familia Ichneumonidae. In: Hanson, P. & Gauld, I.D. (eds) Hymenoptera de la Región Neotropical. Memoirs of the American Entomological Institute, 77, 446–487.

    Gauld, I.D. & Wahl, D.B. (2012). Genera Ichneumonorum Nearcticae. Available at http://www.amentinst.org/GIN/ (accessed March 3, 2011)

    Goloboff, P.A. (2002) Techniques for analyzing large data sets. In: DeSalle, R., Giribet, G. & Wheeler, W. (Eds), Techniques in molecular systematic and evolution. Basel: Brikhäuser Verlag. pp. 70–79.

    Goloboff, P., Farris, J. & Nixon, K. (2003) T.N.T.: Tree Analysis Using New Technology. Program and documentation. Available from the authors, and at www.zmuc.dk/public/phylogeny/tnt (accessed 03 October 2011).

    Goloboff, P., Farris, J. & Nixon, K. (2008) TNT., a free program for phylogenetic analysis. Cladistics, 24, 774–786.

    Nixon, K.C. (1999a) The Parsimony Ratchet, a new method for rapid parsimony analysis. Cladistics, 15, 407–414.

    Nixon, K.C. (1999b) Winclada (BETA) ver. 0.9.9. Published by the author, Ithaca, New York.

    Porter, C.C. (1963) A new genus of the tribe Mesostenini from Chile (Hymenoptera, Ichneumonidae). Psyche, 70(2), 117–119.

    Porter, C.C. (1965) Picrocryptoides: A new genus of the tribe Mesostenini from southern South America (Hymenoptera, Ichneumonidae). Psyche, 72, 167–174.

    Porter, C.C. (1967a). A review of the Chilean genera of the tribe Mesostenini (Hym. Ichneumonidae). Studia Entomologica, 10, 369–418.

    Porter, C.C. (1967b) A new genus of the Trachysphyrus group from southern Brazil (Hymenoptera, Ichneumonidae). Psyche, 74(3), 218–223.

    Porter, C.C. (1973) A new Argentine genus of the subtribe Mesostenina (Hyemnoptera, Ichneumonidae). Acta Zoologica Lilloana, 26(21), 301–311.

    Porter, C.C. (1977) Prosthoporus, a new Bolivian genus of the subtribe Lymeonina (Hymenoptera, Ichneumonidae). Psyche, 83(3–4)(1976), 271–276.

    Porter, C.C. (1985) Trachysphyrus and the new genus Aeliopotes in the coastal desert of Peru and north Chile (Hymenoptera: Ichneumonidae). Psyche, 92(4), 513–545.

    Porter, C.C. (1987) A revision of the Chilean Mesostenini (Hymenoptera: Ichneumonidae). Contributions to the American Entomological Institute, 23(3), 1–164.

    Santos, B.F., Aguiar, A.P. & Tedesco, A.M. (2009) Phylogenetic revision and the origin of Polyphrix Townes (Hymenoptera, Ichneumonidae, Cryptinae), with description of a new species. Zootaxa, 2214, 29–44.

    Sharkey, M.J. & Wharton, R.A. (1997) Morphology and Terminology. In: Wharton, R.A., Marsh, P.M. & Sharkey, M.J. (Eds), Manual of the new world genera of the family Braconidae (Hymenoptera). Special Publication of the International Society of Hymenopterists, 1, pp. 1–439.

    Tedesco, A.M. & Aguiar, A.P. (2009) Cladistic assessment and description of a new Neotropical genus and species of Lymeonina (Hymenoptera, Ichneumonidae, Cryptinae). Zootaxa, 2192, 56–68.

    Tedesco, A.M. & Aguiar, A.P. (2011) Revision and phylogeny of the rare Priotomis Townes (Hymenoptera, Ichneumonidae, Cryptinae), with three new species and first description of the male. Zootaxa, 3031, 14–36.

    Townes, H.K. (1946) The generic position of the Neotropic Ichneumonidae with types in the Philadelphia and Quebec museums described by Cresson, Hooker, Norton, Provancher, and Viereck. Boletín de Entomologia Venezolana, 5, 29–63.

    Townes, H.K. (1961) Generic descriptions. In: Townes, H.K., Townes, M. & Gupta, V.K. (1961). A catalogue and reclassification of the Indo-Australian Ichneumonidae. Memoirs of the American Entomological Institute, 1, 1–522.

    Townes, H.K. (1970) The genera of Ichneumonidae, part 2. Memoirs of the American Entomological Institute, 12 (1969), 1–537.

    Townes, H.K. (1972) A light-weight Malaise trap. Entomological News, 83, 239–247.

    Townes, H.K. & Townes, M. (1962) Ichneumon-flies of American north of Mexico: 3 Subfamily Gelinae, Tribe Mesostenini. United States National Museum Bulletin, 213(3), 1–602.

    Townes, H.K. & Townes, M. (1966) A catalogue and reclassification of the Neotropic Ichneumonidae. Memoirs of the American Entomological Institute, 8, 1–367.

    Wahl, D.B. (1999) Classification and Systematics of the Ichneumonidae (Hymenoptera). Available at http://hymfiles.biosci.ohio-state.edu/catalogs/ichneumonids/ (accessed 03 October 2011).