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      Revision of the Megasoma ( Megasoma) gyas (Jablonsky in Herbst, 1785) species group (Coleoptera, Scarabaeidae, Dynastinae)


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          The taxa of the genus Megasoma Kirby, 1825 ( Coleoptera , Scarabaeidae , Dynastinae ) related to M. gyas (Jablonsky in Herbst, 1785) are revised. Megasoma ( M.) gyas is recognized as a monotypic species restricted to the Caatinga biome of northeastern Brazil. Megasoma gyas rumbucheri Fischer, 1968, is considered as a new synonym of M. gyas . The “long-horned M. gyas ” is recognized as a separate polytypic species M. ( M.) typhon (Olivier, 1789) with the nominative subspecies occurring through the Mata Atlântica biome of Brazil, from Bahia to São Paulo states and M. ( M.) typhon prandii Milani, 2008 restricted to a small area in the state of Santa Catarina, South Brazil. Megasoma gyas porioni Nagai is considered as a new synonym of M. typhon typhon . The “short-horned M. gyas ” occurring in Minas Gerais, São Paulo, and southwestern Bahia, is recognized as a separate new species and described as M. ( M.) hyperion sp. nov. The paper includes an historical research and the redescriptions of the other nominal species of the genus. Distribution maps and a key to species in the M. ( M.) gyas species group (males and females) are also provided.

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          Seasonality of insects in the semi-arid Caatinga of northeastern Brazil

          Insects are essential to tropical ecosystems functioning. In semi-arid regions, the increase in abundance and/or activity (e.g. reproduction and foraging behavior) of insects is usually associated with climatic variables. The present study investigates which climatic variables are best predictors of insect abundance in an area of Caatinga in northeastern Brazil. Individuals were sampled for 24 months using Malaise and pitfall traps, and beating trays. A total of 58925 individuals belonging to 20 insect orders were collected. The most abundant orders were Hymenoptera, Diptera, Collembola and Coleoptera. Most orders studied showed a clear maximum abundance in the rainy season. Rainfall and humidity were the best predictors of insect abundance in the Caatinga. However, no climatic variable could explain Psocoptera and Blattodea variance in abundance/activity. Our results suggest that climatic changes associated with rainfall patterns in the Caatinga may affect ecosystem processes and services that depend direct or indirectly on insect abundance/activity.
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            Litteratura Coleopterologica (1758–1900): a guide to selected books related to the taxonomy of Coleoptera with publication dates and notes

            Abstract Bibliographic references to works pertaining to the taxonomy of Coleoptera published between 1758 and 1900 in the non-periodical literature are listed. Each reference includes the full name of the author, the year or range of years of the publication, the title in full, the publisher and place of publication, the pagination with the number of plates, and the size of the work. This information is followed by the date of publication found in the work itself, the dates found from external sources, and the libraries consulted for the work. Overall, more than 990 works published by 622 primary authors are listed. For each of these authors, a biographic notice (if information was available) is given along with the references consulted.
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              Entomologie, ou, Histoire naturelle des insectes : avec leurs caractères génériques et spécifiques, leur description, leur synonymie, et leur enluminée /


                Author and article information

                Pensoft Publishers
                30 November 2020
                : 999
                : 109-145
                [1 ] Via Del Seminario 16, I-25087, Salò, BS, Italy Unaffiliated Salò Italy
                [2 ] Universidade Federal Rural de Pernambuco, Departamento de Agronomia/Fitossanidade, Laboratório de Taxonomia de Insetos, Programa de Pós-graduação em Entomologia Agrícola-PPGEA, 52171-900, Recife, Pernambuco, Brazil Universidade Federal Rural de Pernambuco Recife Brazil
                [3 ] Universidade Federal de Mato Grosso, Instituto de Biociências, Departamento de Biologia e Zoologia, Coleção Entomologica, 78060-900, Cuiabá, Mato Grosso, Brazil Universidade Federal de Mato Grosso Cuiabà Brazil
                Author notes
                Corresponding author: Massimo Prandi ( prandi.m@ 123456libero.it )

                Academic editor: A. Frolov

                Author information
                Massimo Prandi, Paschoal C. Grossi, Fernando Z. Vaz-de-Mello

                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.

                : 10 April 2020
                : 25 October 2020
                Research Article

                Animal science & Zoology
                cerrado,neotropical region,new species, scarabaeoidea ,south america
                Animal science & Zoology
                cerrado, neotropical region, new species, scarabaeoidea , south america


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