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      First fossil record of Discocephalinae (Insecta, Pentatomidae): a new genus from the middle Eocene of Río Pichileufú, Patagonia, Argentina

      research-article
      1 , 2
      ZooKeys
      Pensoft Publishers
      Acanthocephalonotum gen. n., Heteroptera, Discocephalini

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          Abstract

          Abstract

          A new genus and species of Discocephalini, Acanthocephalonotum martinsnetoi gen. n. et sp. n. is described from Río Pichileufú, middle Eocene of Patagonia, Argentina at palaeolatitude ~ 46°S. The new species is the first fossil representative of the Discocephalinae. This taxon is extant in equatorial to subtropical America, and some species reach warm temperate latitudes (Buenos Aires province). The new genus is distinguished from the other genera of Discocephalini by the combination of these characters: interocular width greater than head length; head massive and quadrangular with the anterior margin almost straight; juga touching each other; labrum thick and curved; triangular ante-ocular process extending beyond the eye; broad spine-like antero-lateral process of the pronotum; pronotum explanate and bean shaped; scutellum triangular with a circular tongue reaching the anterior side of abdominal segment 7; and wings well developed with membrane just surpassing end of abdomen.

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          Most cited references14

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          Tertiary Flora from the Rio Pichileufu, Argentina

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            Phylogenetic relationships of family groups in Pentatomoidea based on morphology and DNA sequences (Insecta: Heteroptera)

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              THE FEMALE GENITALIA OF THE HETEROPTERA: MORPHOLOGY AND BEARING ON CLASSIFICATION1

              G. SCUDDER (1959)
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                Author and article information

                Journal
                Zookeys
                Zookeys
                ZooKeys
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2014
                30 June 2014
                : 422
                : 23-33
                Affiliations
                [1 ]División Paleozoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, La Plata (1900), and CONICET, Argentina
                [2 ]Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya str. 123, 117997 Moscow, Russia
                Author notes
                Corresponding author: Julián F. Petrulevičius ( levicius@ 123456fcnym.unlp.edu.ar )

                Academic editor: Pavel Štys

                Article
                10.3897/zookeys.422.6750
                4109444
                25061387
                5cb2123a-2f7a-4476-a3f6-0b0ea329066d
                Julián F. Petrulevičius, Yuri A. Popov

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 5 December 2013
                : 7 May 2014
                Categories
                Research Article

                Animal science & Zoology
                acanthocephalonotum gen. n.,heteroptera,discocephalini,animalia,hemiptera,pentatomidae

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