Browsing by Autor "Marcelo Amaya"

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    A New Brachypterous Species of Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae) from Bolivia
    (The Coleopterists Society, 2024) Marcelo Amaya; Yannet Condori; Eunice Copa-Beltrán; Jorge Armando Arias-Buriticá; Fernando Zagury Vaz‐de‐Mello
    A new brachypterous species of Dichotomius (Selenocopris) Burmeister, 1846 from Bolivia, Dichotomius abayoyensis Amaya, Condori, Copa-Beltrán, Arias-Buriticá, and Vaz-de-Mello, new species is described with diagnosis, photographs, and discussion of its taxonomic position in the genus. This new species is the eleventh known with the brachypterous condition in Dichotomius Hope, 1938. This species belongs to the Dichotomius geminatus (Arrow, 1913) species group and is related to Dichotomius vidaurrei Nunes and Vaz-de-Mello, 2013. Dichotomius abayoyensis differs from D. vidaurrei in having a longer cephalic process, pronotum with anterior excavation, pygidium with distinct punctures on the entire surface, parameres with a pronounced constriction on their distal lateral margins, subgenital plate present with sclerites without projection, and hind wing reduced with a row of dense setae on the superior margin. This species is known only from the “Chaparral de Abayoy” vegetation, located in Roboré (Chiquitos Province, Bolivia).
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    A new species of the genus Cylindera (Coleoptera: Cicindelidae) from southern Bolivia with imitating behaviour to co-occurring ants
    (Q15088586, 2021) Ondřej Šafránek; Marcelo Amaya
    Cylindera (Cylindera) julietae sp. nov. (Cicindelidae: Cicindelini) is described as new for science from southern Bolivia. The new species is compared to a similar species Cylindera (Cylindera) confluentesignata (W. Horn, 1915). Colour photographs of habitus, habitat and diagnostic characters of the two similar species are presented. The behaviour of adults of the new species, imitating that of co-occurring ants, is discussed.
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    A new species of the genus Oxycheila (Coleoptera: Cicindelidae) from Bolivia
    (Q15088586, 2020) Ondřej Šafránek; Marcelo Amaya
    The new species Oxycheila alenatiki sp. nov. (Cicindelidae: Megacephalini) is described from central Bolivia and compared to related species. Colour photographs of habitus and male genitalia of O. alenatiki sp.nov. and related species O. gracillima Bates, 1872 and O. oberthueri Horn, 1897 are compared. A modified taxonomic key to the gracillima species group is provided.
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    First Records of Isocopris Pereira and Martínez, 1960 (Coleoptera: Scarabaeidae: Scarabaeinae) for Bolivia
    (The Coleopterists Society, 2025) Julieta Ledezma; Marcelo Amaya; Jorge Armando Arias-Buriticá; Fernando Zagury Vaz‐de‐Mello
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    The unique functioning of a pre-Columbian Amazonian floodplain fishery
    (Nature Portfolio, 2018) Rumsaïs Blatrix; Bruno Roux; Philippe Béarez; Gabriela Prestes-Carneiro; Marcelo Amaya; José Luis Aramayo; Leonor Rodrigues; Umberto Lombardo; José Iriarte; Jonas Gregório de Souza