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

ABSTRACT: 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.) hyperionsp. 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.

SUBMITTER: Prandi M

PROVIDER: S-EPMC7723882 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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

Prandi Massimo M Grossi Paschoal C PC Vaz-De-Mello Fernando Z FZ

ZooKeys 20201130

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 subs ...[more]

PMID: 33343214

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Project description:The Agrilus occipitalis species-group is redefined and diagnosed. Two species from this group, Agrilus auriventris Saunders, 1873 and Agrilus occipitalis (Eschscholtz, 1822), are known as the serious pests of cultivated Citrus trees. Overall twenty-three taxa are included in the Agrilus occipitalis species-group. A complete list of references, type material, species examined and distribution is given for each taxon. The host plants, adult occurrence and altitude range is cited for most taxa. Habitus of all taxa and aedeagi of available males are pictured. Images of primary type specimens are provided. A character state matrix table for diagnostic characters is given for all taxa to facilitate their determination. The following new taxonomic and nomenclatural acts are proposed. New species:eight new species are described: Agrilus mucidus sp. n., Agrilus nebulosus sp. n., Agrilus picturatus sp. n., Agrilus pluvius sp. n., Agrilus pseudoambiguus sp. n., Agrilus tesselatus sp. n., Agrilus trepanatus sp. n. and Agrilus umrongso sp. n. Proposed synonyms: eight synonyms are proposed: celebicola Obenberger, 1924, syn. n. (synonym of occipitalis Eschscholtz, 1822); connexus Kerremans, 1900, syn. n. (synonym of occipitalis Eschscholtz, 1822); cupricauda Saunders, 1867 syn. n. (synonym of occipitalis Eschscholtz, 1822); evinadus Gory & Laporte, 1839, syn. n. (synonym of occipitalis Eschscholtz, 1822); nirius Obenberger, 1924 syn. reconfirmed (synonym of occipitalis Eschscholtz, 1822); oblatus Kerremans, 1900, syn. n. (synonym of occipitalis Eschscholtz, 1822); samoensis Blair, 1928, syn. n. (synonym of auriventris Saunders, 1873); tebinganus Obenberger, 1924, syn. n. (synonym of occipitalis Eschscholtz, 1822). New lectotype designations: six lectotypes are designated: Agrilus celebicola Obenberger, 1924; Agrilus cupricauda Saunders, 1867; Agrilus korenskyi Obenberger, 1923; Agrilus kurandae Obenberger, 1923; Agrilus nirius Obenberger, 1924; Agrilus nitidus Kerremans, 1898.

Dataset Information

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

Publications

Revision of the <i>Megasoma</i> (<i>Megasoma</i>) <i>gyas</i> (Jablonsky in Herbst, 1785) species group (Coleoptera, Scarabaeidae, Dynastinae).

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