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New Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) in the Albomarginatus Species Group from Northwestern Argentina

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New Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) in the Albomarginatus Species Group from Northwestern Argentina University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida 12-2008 New Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) in the albomarginatus species group from northwestern Argentina Charles C. Porter Florida State Collection of Arthropods Follow this and additional works at: https://digitalcommons.unl.edu/insectamundi Part of the Entomology Commons Porter, Charles C., "New Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) in the albomarginatus species group from northwestern Argentina " (2008). Insecta Mundi. 580. https://digitalcommons.unl.edu/insectamundi/580 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. INSECTA MUNDI A Journal of World Insect Systematics 0055 New Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) in the albomarginatus species group from northwestern Argentina Charles C. Porter Florida State Collection of Arthropods Florida Department of Agriculture and Consumer Services P.O. Box 147100 Gainesville, FL. 32614-7100 Date of Issue: December 5, 2008 CENTER FOR SYSTEMATIC E NTOMOLOGY, INC., Gainesville, FL Charles C. Porter New Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) in the albomarginatus species group from northwestern Argentina Insecta Mundi 0055: 1-9 Published in 2008 by Center for Systematic Entomology, Inc. P. O. Box 141874 Gainesville, FL 32614-1874 U. S. A. http://www.centerforsystematicentomology.org/ Insecta Mundi is a journal primarily devoted to insect systematics, but articles can be published on any non-marine arthropod taxon. Manuscripts considered for publication include, but are not limited to, systematic or taxonomic studies, revisions, nomenclatural changes, faunal studies, book reviews, phylo- genetic analyses, biological or behavioral studies, etc. Insecta Mundi is widely distributed, and refer- enced or abstracted by several sources including the Zoological Record, CAB Abstracts, etc. As of 2007, Insecta Mundi is published irregularly throughout the year, not as quarterly issues. As manuscripts are completed they are published and given an individual number. Manuscripts must be peer reviewed prior to submission, after which they are again reviewed by the editorial board to insure quality. One author of each submitted manuscript must be a current member of the Center for System- atic Entomology. Managing editor: Paul E. Skelley, e-mail: [email protected] Production editor: Michael C. Thomas, e-mail: [email protected] Editorial board: J. H. Frank, M. J. Paulsen Printed copies deposited in libraries of: CSIRO, Canberra, ACT, Australia Museu de Zoologia, São Paulo, Brazil Agriculture and Agrifood Canada, Ottawa, Ontario, Canada The Natural History Museum, London, England Muzeum I Instytut Zoologii Pan, Warsaw, Poland National Taiwan University, Taipei, Taiwan California Academy of Sciences, San Francisco, CA, USA Florida Department of Agriculture and Consumer Services, Gainesville, FL, USA Field Museum of Natural History, Chicago, IL, USA National Museum of Natural History, Smithsonian Institution, Washington, DC, USA Electronic copies in PDF format: Printed CD mailed to all members at end of year. Florida Center for Library Automation: purl.fcla.edu/fcla/insectamundi University of Nebraska-Lincoln, Digital Commons: http://digitalcommons.unl.edu/insectamundi/ Author instructions available on the Insecta Mundi page at: http://www.centerforsystematicentomology.org/insectamundi/ Printed Copy ISSN 0749-6737 On-Line ISSN 1942-1354 CD-ROM ISSN 1942-1362 0055: 1-9 2008 New Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) in the albomarginatus species group from northwestern Argentina Charles C. Porter Florida State Collection of Arthropods Florida Department of Agriculture and Consumer Services P.O. Box 147100 Gainesville, FL. 32614-7100 Abstract. Three new species of the albomarginatus species group of the genus Trachysphyrus (T. fidalgoi, T. riojanus, and T. tmetus) are described from the Subandean Desert (Monte) of Northwest Argentina. A key is given to these and to the five described species also known from Neotropic Argentina in the semiarid Prepuna, Subandino, and Chaco Serrano as well as in such wetter habitats as the Chaco Húmedo and Selva Tucumano-Boliviana (Yungas). Four additional species occur in Neantarctic Chile from Santiago south to Magallanes with overlap into the Nothofagus forests of southwest Argentina (Neuquén, Río Negro). Several species have been reared from cocoons of Lepidoptera (Megalopygidae, Psychidae) and others from mud nests of eumenid wasps (Hypodynerus Saussure, Pachymenes Saussure). Resumen. Se describen tres especies nuevas de Trachysphyrus (T. fidalgoi, T. riojanus, y T. tmetus) del Desierto Subandino en el noroeste de la Argentina y pertenecientes al grupo de T. albomarginatus. Se proporciona una clave de éstas junto con las cinco especies ya descritas del mismo grupo que se conocen de la Argentina neotropical y que habitan en zonas semiáridas como la Prepuna, Subandino, y Chaco Serrano, asimismo en zonas más lluviosas como el Chaco Húmedo y Selva Tucumano-Boliviana (Yungas). El grupo está representado también por cuatro especies más en Chile neantártico desde Santiago hasta Magallanes y en el suroeste de la Argentina (Neuquén, Río Negro). Varias especies han sido criadas de capullos de Lepidoptera (Megalopygidae, Psychidae) y otras de los nidos de barro construidos por avispas de la familia Eumenidae (Hypodynerus Saussure, Pachymenes Saussure). Introduction Trachysphyrus Haliday is a very large Andean and temperate South American genus of cryptine ichneumonids most of which are ectoparasitoids of Lepidoptera that make tough cocoons or of eumenid wasps in mud nests. Porter (1967) gave descriptions and keys to 94 species, of which 68 were new. More recent fieldwork has greatly increased this number. Here I describe three new members of the albomarginatus species group which were collected by Malaise trap at Santa Vera Cruz in the Sierra de Velasco of La Rioja Province as part of a collaborative project between the Centro Regional de Investigaciones de La Rioja (CRILAR), an institute of the Argentine National Science Foundation (CONICET), and the research associate program of the Florida State Collection of Arthropods. The albomarginatus species group may be recognized by the following combination of characters: Flagellum with a white band; head and body black or black and white; often with orange legs; apical margin of clypeus without a median tooth; malar space 0.6-0.9 times as long as basal width of mandible; epomia not or only weakly turned mesad above at humeral margin of pronotum; mesoscutum often shining with dense but adjacent or subadjacent punctures and strong wrinkling along notauli, more rarely mat and finely puncto-reticulate; no carina on prepectus opposite lower hind corner of pronotum; axillus vein always close to hind margin of hind wing; base of petiole without a strong rounded or subtriangular lateral projection; second gastric tergite without large, coarse punctures; no ridges on dorsal valve of ovipositor tip. The albomarginatus species group has fifteen species, with one in the Peruvian Andes, nine in north- ern and central Argentina, and four in Neantarctic Chile and southern Argentina. Several species are known to parasitize Lepidoptera in the genera Oiketicus Guilding (Psychidae) and Megalopyge Hübner (Megalopygidae), while others have been reared from the mud nests of eumenine wasps (Hymenoptera, Vespidae) such as Pachymenes bipartitus (Fox) and Hypodynerus Saussure. 1 2 I NSECTA M UNDI 0055, December 2008 PORTER Most argentine species occur in semiarid or arid habitats at 1-2000 m altitude in the Monte (Subandino) and Chaco Serrano biotic provinces with some overlap into moist woodland along streams, while T. brasson Porter and T. blanchardi Townes and Townes are known mostly from wet forest and the Chaco Húmedo (Cabrera and Willink 1973, Porter 1967). Key to species of the albomarginatus species group in northern and central Argentina 1. Clypeus on apical margin with a pair of tiny median tubercles; mesoscutum mat, finely reticulo- punctate with some transverse wrinkling mesad along notauli; first flagellomere 8.0 times as long as deep at apex; propodeal cristae strongly projecting, obtuse subcuneate; second gastric tergite mat with dense micro-reticulation and tiny punctures whose setae equal or exceed the length of their interspaces ................................................... Trachysphyrus fidalgoi Porter Clypeus without tubercles on apical margin; mesoscutum largely shining with strong subadjacent to confluent punctures and often with coarse wrinkling all along notauli and on periphery of lateral lobes; first flagellomere 3.5-6.9 times as long as deep at apex; propodeal cristae often less strongly projecting, subligulate or subcuneate; second gastric tergite variable, often shining with weaker micro-reticulation and sparser setae .................................................................. 2 2(1). Flagellum broadly flattened below toward apex; sheathed portion of ovipositor 0.40 times as long as fore wing.......................................................................... Trachysphyrus zaceras Porter Flagellum not or slightly flattened
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