21 research outputs found
First record of Eufriesea laniventris (Ducke, 1902) (Hymenoptera, Apidae, Euglossini) in the state of Amazonas, Brazil
The first record of Eufriesea laniventris in the state of Amazonas is here reported. Attracted to 1.8 cineole and methyl salicylate fragrances, six specimens were colected in the region of Manaus (2Âș 36' S 60Âș 02' W) during the year 2000.", 'enĂ registrada pela primeira vez a ocorrĂȘncia de Eufriesea laniventris no Amazonas. No ano 2000, foram coletados seis exemplares na regiĂŁo de Manaus (2Âș 36' S e 60Âș 02' W) atraĂdos pelas substĂąncias odorĂferas 1,8 cineol e salicilato de metila
A solitary groundânesting wasp truncates its parental investment in response to detection of parasites
1. Parental investment by solitary nest-building wasps and bees is predicted to be plastic, responding to variation in the sex of the offspring, the availability of food used as provisions ('resource limitation'), the female's inventory of mature oocytes ('egg limitation'), and risk imposed by nest parasites.
2. I observed nest provisioning by Ammophila dysmica, a solitary, ground-nesting wasp that provisions its nest with one or two caterpillar prey to evaluate the hypotheses that
provisioning is shaped by caterpillar size, offspring sex, the hunting time required to capture prey, a female's egg load, and penetration of nests by the parasites Argochrysis
armilla and Hilarella hilarella.
3. Ammophila dysmica were more likely to add a second provision to the nest when the first prey item was relatively small and when provisioning daughters.
4. Neither the hunting time required to capture the first caterpillar prey nor the female's inventory of oocytes predicted a female's likelihood of adding a second caterpillar to a nest. Variation in oocyte inventory across females was minimal; all females examined had a mature or nearly mature oocyte remaining in the ovaries immediately after laying an egg.
5. Ammophila dysmica were much less likely to add a second caterpillar to nests that were penetrated by parasites during the first provisioning.
6. Although many nest parasites have evolved adaptations to avoid detection by their hosts, oviposition by A. armilla often appears to reveal its presence, eliciting an abrupt truncation of investment by the host in that nest.All needed metadata are included with the data files (see metadata tabs).
Funding provided by: National Science FoundationCrossref Funder Registry ID: http://dx.doi.org/10.13039/100000001Award Number: Funding provided by: University of California BerkeleyCrossref Funder Registry ID: http://dx.doi.org/10.13039/100006978Award Number: Funding provided by: Sigma XiCrossref Funder Registry ID: http://dx.doi.org/10.13039/100011084Award Number: Funding provided by: University of Hawai'iCrossref Funder Registry ID: http://dx.doi.org/10.13039/100008782Award Number:All data were collected by direct observations in the field
Uma nova espécie de Euplusia da Bahia, Brasil (Hymenoptera, Apoidea, Euglossinae) A new species of Euplusia from Bahia, Brazil (Hymenoptera, Apoidea, Euglossinae)
<abstract language="eng">Euplusia aridicola sp. n., a member of the short longued group, is described as a new species. It can be easily recognized by the large white yellowish pubescence on the sides of terga second to fourth, the bright anterior half of mesoscutum covered by yellowish hairs; clypeus medially bicarinate. The holotype was colleted in Ibiraba, Barra, a semi-arid region of Bahia, Brazil, using eucalyptol, as an attractant
Utilização de armadilhas para a captura de machos de Euglossini (Hymenoptera, Apoidea)
<abstract language="eng">The use of a commercial fruit fly trap, baited with atractive compounds, for the collection of male euglossine bees is described. Some of the preliminary results obtained are presented
Notas taxonÎmicas sobre Exaerete (Hymenoptera: Apidae: Euglossina), com a descrição de uma nova espécie
Exaerete kimseyae sp. n., abelha de hĂĄbito cleptoparasĂtico e provavelmente endĂȘmica do Panam , Ă© aqui descrita. Esta nova espĂ©cie foi erroneamente identificada como E. trochanterica (Friese, 1910) por Kimsey (1979). Por esse motivo, Anjos-Silva & RebĂȘlo (2006), desconhecendo a correta identidade de Exaerete trochanterica, descreveram um exemplar desta espĂ©cie coletado em Mato Grosso, Brasil como Exaerete guaycuru. Aqui E. guaycuru Ă© colocada como sinĂŽnimo jĂșnior de Exaerete trochanterica