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Redalyc.Chironomid (Chironomidae: Diptera) Checklist from Nahuel Huapi National Park, Patagonia, Argentina

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Redalyc.Chironomid (Chironomidae: Diptera) Checklist from Nahuel Huapi National Park, Patagonia, Argentina Revista de la Sociedad Entomológica Argentina ISSN: 0373-5680 [email protected] Sociedad Entomológica Argentina Argentina DONATO, Mariano; MASSAFERRO, Julieta; BROOKS, Stephen J. Chironomid (Chironomidae: Diptera) checklist from Nahuel Huapi National Park, Patagonia, Argentina Revista de la Sociedad Entomológica Argentina, vol. 67, núm. 1-2, 2008, pp. 163-170 Sociedad Entomológica Argentina Buenos Aires, Argentina Available in: http://www.redalyc.org/articulo.oa?id=322028482015 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative ISSN 0373-5680 Rev. Soc. Entomol. Argent. 67 (1-2): 163-170, 2008 163 Chironomid (Chironomidae: Diptera) checklist from Nahuel Huapi National Park, Patagonia, Argentina DONATO, Mariano*, Julieta MASSAFERRO** and Stephen J. BROOKS*** *Laboratorio de Sistemática y Biología Evolutiva (LASBE), Museo de La Plata, Paseo del Bosque s/n (1900), La Plata, Argentina; e-mail: [email protected] **Laboratorio de Biodiversidad, INIBIOMA - CONICET, San Martín 24, (8400) Bariloche, Argentina; e-mail: [email protected] ***Department of Entomology, Natural History Museum, London SW7 5BD, United Kingdom; e-mail: [email protected] Lista de los quironómidos (Chironomidae: Diptera) del Parque Nacional Nahuel Huapi, Patagonia, Argentina RESUMEN. Este trabajo presenta el primer catálogo de taxones modernos y subfósiles de la familia Chironomidae (Insecta: Diptera) del Parque Nacional Nahuel Huapi en Patagonia, Argentina. La fauna catalogada contiene 104 especies en 48 géneros y 6 subfamilias para la fauna moderna y 52 morfotipos en 36 géneros y 4 subfamilias para la fauna subfósil. PALABRAS CLAVE. Chironomidae. Diversidad. Fauna moderna. Fauna subfósil. Hemisferio Sur. ABSTRACT. This paper presents the first inventory of modern and sub- fossil taxa of the Family Chironomidae (Insecta: Diptera) from Nahuel Huapi National Park in Patagonia, Argentina. The catalogued fauna contains 104 species in 48 genera and 6 sub-families for modern fauna and 52 morphotypes in 36 genera and 4 subfamilies for sub-fossil fauna. KEYWORDS. Chironomidae. Diversity. Modern fauna. Sub-fossil fauna. Southern Hemisphere. INTRODUCTION variables such as dissolved oxygen, nutrients and organic content of sediments, The Family Chironomidae (Insecta: pH and salinity, has led to their use as Diptera: Nematocera), colloquially known indicators of lake quality and environmental as non-biting midges, are probably the most change in ecological and paleoecological abundant insects found in freshwater studies (Walker, 2001). systems (Cranston, 1995). The distribution In southern South America, studies on of chironomids is driven by environmental Chironomidae began with Edwards (1931), conditions, especially temperature, and a who was the first to recognize the possibility considerable number of species are of a circum-Antarctic chironomid faunal stenotopic (i.e. living in a narrow range of connection. In Patagonia, the region of particular environmental conditions). Argentina and Chile that extends from 39° Chironomids respond rapidly to S to 55° S, the most significant early environmental change and the sensitivity contributions to knowledge on chironomid of chironomids to different environmental taxonomy and biogeography were made by Recibido: 5-II-2008; aceptado: 9-V-2008 164 Rev. Soc. Entomol. Argent. 67 (1-2): 163-170, 2008 Brundin (1956, 1958, 1966). Since Brundin‘s the most abundant aquatic insect groups in studies, other researchers have investigated the world, and which are in need of further this remote area of the world (e.g. Cranston, investigation in southern South America. 2000a, 2000b; Cranston & Edwards, 1999; Gonser & Spies, 1997; García & Añón Suarez, 2007; Paggi, 1979, 1984, 1986a, 1986b, MATERIAL AND METHODS 1987; Paggi, 2007; Paggi & Añón Suárez, 2000; Prat et al., 2004; Reiss, 1972; Sæther, Taxonomic identifications based on newly 1990; Sæther & Andersen, 2003) making collected material were made with reference remarkable contributions to furthering the to specimens from collections and literature knowledge of taxonomy and distribution of at the Natural History Museum, London, UK Southern Hemisphere chironomids. and Museo de La Plata, Argentina. The new However, the number of species currently material was collected during 2006/2007, documented is still considered conservative together with other freshwater invertebrates and many taxa remain undescribed as part of a Darwin Initiative programme (Cranston, 1995). currently in progress in the Nahuel Huapi For the Austral region, there are only three National Park. identification keys available for chironomids Sub-fossil chironomids are often abundant covering part of the Australian and New in a wide range of Quaternary deposits. They Zealand faunas (Freeman, 1959, 1961; are of special interest in paleolimnology Cranston, 1996; 2000c). Similar keys have because their strongly sclerotised larval head yet to be published for Patagonia. capsules preserve well in sediments, enabling their identification to generic and species- Study area group level. The material shown in this study was collected from lake sediment cores Nahuel Huapi National Park covers an obtained in the Nahuel Huapi National Park area of 710,000 ha. It was the first national area (Ariztegui et al., 1997; Bianchi et al., park created in Argentina and was donated 1997, 2000; Corley & Massaferro, 1998; by Dr. Francisco P. Moreno in 1903. It is Massaferro & Corley, 1998; Massaferro et al., located in the north-western part of Rio Negro 2004) and identified following Cranston Province between 40º8' and 41º35' S to 71º2' (2000) and photographical material. and 71º57' W (Fig. 1). Within the National Park, on a W-E transect of not more than 100 km, annual precipitation declines from 3000 RESULTS mm (Puerto Blest) to 200 mm (Limay river). This moisture regime supports three types of Chironomid taxa are listed systematically vegetation units: Alto-Andean Steppe, by tribe and in alphabetical order by genus Andino-Patagonian Forest and Patagonian and species. Letters L, P, M and F refer to Steppe (Correa, 1998) in one of the most larvae, pupae, adult male and adult female extreme ecological gradients of the world. specimens respectively. The list is based on In this study we provide the first inventory material collected in Nahuel Huapi National of Chironomidae taxa for the Nahuel Huapi Park during 2006-2007 as part of the Darwin National Park, one of the most important Initiative project, and also from material centres of species diversity and richness not previously described in the literature of and only in the Southern Hemisphere, but also in collected from Nahuel Huapi National Park. the world (Orme et al., 2005). We also include a list of taxa identified from sub-fossil Modern fauna chironomid head capsules collected from lake sediments located in the National Park. Sub-family Tanypodinae This work will contribute to the knowledge Tribe Pentaneurini of the taxonomy and distribution of one of Ablabesmyia infumata Edwards, 1931 M DONATO, M. et al. Chironomidae of Nahuel Huapi National Park 165 Fig. 1. Geographical location of the Nahuel Huapi National Park. Ablabesmyia punctulata (Philippi, 1865) M Parochlus nigrinus nigrinus (Edwards, 1931) M-F Ablabesmyia reissi Paggi & Añón-Suárez, Parochlus patagonicus Brundin, 1966 P 2000 L-P-M-F Parochlus squamipalpis (Edwards, 1931) F Ablabesmyia sp. 1 L Parochlus trigonocerus Brundin, 1966 P-M Ablabesmyia sp. 2 M Parochlus tubulicornis Brundin, 1966 P-M-F Alotanypus sp. 1, L Podochlus robsoni Brundin, 1966 P-M Labrundinia separata (Edwards, 1931), M-F Podochlus sp. «Ñireco» Brundin, 1966 P Labrundinia sp. 1, L Podochlus tenuicornis Brundin, 1966 P-M Larsia pallescens Edwards, 1931 M-F Podonomopsis brevipalpis Brundin, 1966 P-M-F Pentaneura cinerea (Philippi, 1865) F Podonomopsis mutica (Edwards, 1931) M Pentaneura sp. 1, L Podonomus albinervis Edwards, 1931 P-M-F-L Podonomus besti Brundin, 1966 P-M-F Tribe Macropelopini Podonomus decarthrus Edwards, 1931 M-F Apsectrotanypus sp., L-P-M Podonomus inermis Brundin, 1966 P-M-F Podonomus montanus Brundin, 1966 P-M-F Tribe Tanypodini Podonomus nudipennis Edwards, 1931 M Tanypus sp., L Podonomus rivulorum Brundin, 1966 P-M-F Podonomus sp. «Rigi II» Brundin, 1966 P Sub-family Podonominae Rheochlus insignis Brundin, 1966 M Parochlus ayseni Brundin, 1966 M-F Parochlus crassicornis Brundin, 1966 P-M Sub-family Aphroteniinae Parochlus cristatus Brundin, 1966 M Paraphrotenia excellens Brundin, 1966 P-M-F Parochlus duseni Brundin, 1966 M-F Parochlus fascipennis Brundin, 1966 F Sub-family Diamesinae Parochlus montivagus Brundin, 1966 P-M-F Heptagyia annulipes Philippi, 1865 M-F 166 Rev. Soc. Entomol. Argent. 67 (1-2): 163-170, 2008 Limaya longitarsis Brundin, 1966 L-P-A Pseudosmittia fortispinata (Edwards, 1931) M Mapucheptagyia brundini Willassen, 1995 M Pseudosmittia sp. 1?, M Paraheptagyia nitescens (Edwards, 1931) M Rhinocladius culicinus Edwards, 1931 F Paraheptagyia semiplumata (Edwards, 1931) M-F Rhinocladius longirostris Edwards, 1931 M-F Reissmesa antiqua (Brundin, 1966) P-M-F Thienemanniella sp., L Orthocladiinae sp. 1, M Sub-family Orthocladiinae Orthocladiinae (Diplocladius?) sp. 2, L Austrocladius hamulatus (Edwards, 1931) M-F Orthocladiinae sp. 3, L Austrocladius heterogeneous (Edwards,
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