440 resultados para Insecta. Coleoptera (Sistematica)


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Anacanthus biramiguelus sp. nov., from Brazil (Rondônia and Mato Grosso), is described and illustrated. A key to the Brazilian species of Anacanthus is added.

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The morphology of Semiotus distinctus (Herbst, 1806), S. intermedius (Herbst, 1806) and S. ligneus (Linnaeus, 1767), including mouthparts and male and female genitalia, is described and illustrated. A comparative analysis of the characters related to the external morphology, mouthparts and male and female genitalia is also included.

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Oviposition of Zabrotes subfasciatus (Boheman, 1833) on Phaseolus vulgaris (Linnaeus, 1753) was studied immediately after emergence of the adults throughout the females life and in situations of host deprivation lasting for 1 to 10 days. The number of eggs laid daily, longevity, duration of oviposition and distribution of eggs per grain were studied. The number of eggs laid per day varied significantly, with the oviposition peak in the presence of the host (control group) occurring between day 2 and day 5 of oviposition. In the absence of the host, a shift in the oviposition peak to the first day after deprivation was observed, except for the group deprived for one day which showed a peak between days 1 and 4 after introduction of the host. The distribution of the eggs per grain in the control group and in the groups deprived of the host for 2, 5, 8 and 10 days, a larger egg aggregation was observed for all deprived groups compared to the control group.

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New taxa described from Bolivia (Santa Cruz): Canarana roseicollis sp. nov., Gagarinia melasma sp. nov., Hemioloapis ybyra sp. nov.; from Ecuador (Napo): Adesmus paradiana sp. nov., Hemiloapis endyba sp. nov; from Costa Rica: Sybaguasu cupreum sp. nov.; from Costa Rica and Panama: Cotycuara gen. nov., type species, C. albomarginata sp. nov.; Iatuca gen. nov., type species, I. brevicornis sp. nov. A key to the species of Hemiloapis Galileo & Martins, 2004 is added.

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New genus described: Suipinima gen. nov., type species, S. suturalis sp. nov., from Brazil (Rondônia) and Bolivia (Santa Cruz). New species described from Bolivia (Santa Cruz): Suipinima pitanga sp. nov., S. una sp. nov., S. marginalis sp. nov.,Antodice opena sp. nov., Antodilanea auana sp. nov., Aerenicopsis angaibara sp. nov.; from Guatemala: Aerenicopsis irumuara sp. nov. Key to the species of Suipinima is added.

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Revision of 973 specimens of Heterachthes flavicornis (Thomson, 1865), mostly emerged from a same individual of different host plant species, shows that this species has a high phenotypical variation in the color of elytra, antennae and legs. This variability is not related to the geographical distribution or to the host plants. Heterachthes flavicornis sexsignatus (Thomson,1865), and Heterachthes flavicornis bonariensis (Thomson,1865) are considered into the synonymy of Heterachthes flavicornis (Thomson, 1865).

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Although Brazil encompasses one of the most abundant anuran faunas in the world, quantitative information on anuran ecology and diet are limited, especially in the Northeastern region. We analyzed the diet of six species: Hyla albomarginata, Hyla cf. branneri, Hyla minuta, Phyllomedusa aff. hypochondrialis (Hylidae), Leptodactylus natalensis, and Physalaemus cuvieri (Leptodactylidae) in a temporary pond in a rainforest remnant in Pernambuco, between 1999-2000. We analyzed diet composition, degree of food preference, and seasonal variations in diet. Leptodactylus natalensis and P. cuvieri showed higher diet diversity, whereas H. minuta consumed fewer food items. Insecta, Arachnida, and plants were preferential items for most species. Acari were consumed by all species; Hymenoptera, Odonata, and Coleoptera were also often consumed. A slight increase in diet diversity occurred in the rainy season. The species showed a generalist feeding behaviour, although P. cuvieri consumed Formicidae as major prey item.

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Egg case, larvae and pupa of Hydrophilus (Dibolocelus) palpalis are described and illustrated. The aquaria-terraria method was used to rear immature instars in the laboratory.

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Cotychroma gen. nov., é descrito com sua espécie-tipo, C. acaguassu sp. nov., do Brasil (Espírito Santo). Plinthocoelium sapphirum (Bates, 1879) é considerado um novo sinônimo de Callichroma chilensis Blanchard, 1851.

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Trata-se da descrição de novas espécies de Adetus LeConte, 1852, provenientes da Bolívia (Santa Cruz): Adetus cacapira sp. nov. e A. cecamirim sp. nov.; do Peru (Cuzco) e da Bolívia (Santa Cruz): A. inca sp. nov. e do México (Veracruz): A. catemaco sp. nov.

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A situação taxonômica de Apterocaulus Fairmaire, 1864 e a validade de Apterocaulus heterogama heterogama (Burmeister, 1861) são discutidas. Apterocaulus heterogama durnfordii (Burmeister, 1879) é considerada como subespécie válida, sendo aceito os argumentos de Di Iorio (2002).

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The type material of Phasmatodea deposited in Brazilian museums and institutions is listed for the first time. New synonyms are proposed: Phibalosoma paulense Toledo Piza, 1938, Phibalosoma rochai Toledo Piza, 1938, Bacteria tuberculata Toledo Piza, 1938 and Bacteria tuberculata var. argentina Toledo Piza, 1938 are junior synonyms of Cladomorphus phyllinus (Gray, 1835). Nineteen new combinations are established.

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Novos táxons descritos da Costa Rica: Erana cretaria sp. nov., Itumbiara denudata sp. nov., Hilaroleopsis coloratus sp. nov., Alampyris flavicollis sp. nov., Cotycuara viridis sp. nov., Adesmus stellatus sp. nov., A. pilatus sp. nov. (também do Panamá); do Panamá: Eulachnesia amoena sp. nov., Cotycuara crinita sp. nov.; da Venezuela: Abanycha fasciata sp. nov.; do Equador: Mariliana hovorei sp. nov., Adesmus ocellatus sp. nov.; do Peru: Susuanycha gen. nov., espécie-tipo, S. susua sp. nov., Malacoscylus elegantulus sp. nov., Adesmus guttatus sp. nov., A. calca sp. nov.; do Brasil (Minas Gerais): Sybaguasu cornutum sp. nov. Acrescenta-se chave para as espécies de Cotycuara.

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Novos registros: Xenofrea apicalis Melzer, 1931 para o Paraguai e X. triangularis Martins & Galileo, 2005 para o Brasil (Rondônia). Novas espécies: X. fasciolata sp. nov. e X. camixaima sp. nov. (Brasil: Rondônia e Bolívia: Santa Cruz); X. clarkei sp. nov., X. punctata sp. nov., X. nana sp. nov. (Bolívia: Santa Cruz); X. obscura sp. nov. (Argentina: Entre Ríos e Bolívia: Santa Cruz).

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Hisarai, novo gênero de Macrotomini, é descrito para alocar H. seripierriae (Santos-Silva & Martins, 2003), nova combinação, originalmente descrito em Physopleurus Lacordaire, 1869. Nova espécie descrita do Brasil (Bahia): Nothopleurus komiyai (Macrotomini). Nova sinonímia em Macrotomini: Mallodon baroni Casey, 1912 = Mallodon dasystomus dasystomus (Say, 1824). Novos status em Callipogonini: Spiloprionus Aurivillius, 1897 e Navosoma Blanchard, 1846 (com discussão sobre as datas de Navosoma e N. triste Blanchard, 1846). Uma chave para os gêneros Americanos de Macrotomini é adicionada.