Field sexual attraction in the sorghum midge, Contarinia sorghicola (Coquillett, 1899) (Diptera, Cecidomyiidae).

No campo, fêmeas da mosca do sorgo, Contarinia sorghicola (Coquillett, 1899), atraem machos da especie para o acasalamento atraves da emissao de feromonio, o que foi comprovado atraves da utilizacao de armadilhas adesivas contendo femeas virgens ou extratos destas, a nivel de campo. O periodo de maior atratividade ocorreu entre 7:30 e 8:30 horas.1988Suplemento

Evaluation of different attraction sources and their possible interaction in trapping Rhynchophorus palmarum Avaliacao de diferentes fontes atrativas e suas prov?veis interacoes na captura de Rhynchophorus palmarum

3 ilus. 7 tab. 15 ref.Este experimento fue conducido por EMBRAPA CPATC, Aracaju/SE, Brasil, con el objetivo de evaluar la eficiencia de diferentes fuentes de atracci?n y sus probables interacciones en la captura de adultos de Rhynchophorus palmarum. Las fuentes de atracci?n ca?a de az?car (C), feromona de agregaci?n (F), con y sin cambio de la c?psula cada 3 meses, acetato de etila (A) y melaza (M) fueron evaluadas separadamente, y combinadas de dos en dos y de tres en tres, sumando 12 tratamientos en total. Las tiras atractivas fueron colocadas en trampas confeccionadas con baldes pl?sticos de 50 litros. Las trampas fueron evaluadas y cambiadas de lugar en cada colecta para reducir la influencia del lugar sobre el est?mulo del insecto. Un total de 6365 adultos fueron recolectados durante el per?odo experimental. Los tratamientos T10 y T8 fueron los m?s eficientes en la captura de los insectos con 30,54 por ciento y 19,28 por ciento, respectivamente, del total de adultos recolectados. Utilizados aisladamente, los atractivos no fueron eficientes, sumando apenas 4,76 por ciento de los insectos recolectados, mostrando que la interacci?n de las fuentes atractivas es necesaria para un mayor efecto sin?rgico en la atracci?n de R. palmarum. El n?mero de las capturas en cada tratamiento no fue significativamente diferente en relaci?n con el lugar de captura. Research was carried out by Embrapa Coastal Tableland Research Center, Sergipe, Brazil, to determine the efficiency of different lures and to study their probable interaction in the capture of Rhynchophorus palmarum. The experimental design was completely randomized. The lures were sugar cane (C) aggregation pheromone (F) ethyl acetate (A) and molasses (M), tested alone, and combined in twos and threes, adding up to 12 treatments. Plastic bucket traps (50 liters capacity) were used to catch the adults. Every fifteen days, the traps were changed from site to site to avoid the spot effect on the weevil capture. A total of 6365 adults of R. palmarum were captured during the experimental period. The treatment T10 and T8 were the most efficient ones. They were able to attract 30.54 percent and 19.28 percent, adults, respectively, from total adults captured. When tested alone, the lures showed an efficiency level of 4.76 percent from total captures. This result shows the importance of interaction between lures to promote a synergistic effect on the attraction of R. palmarum adults in the field. The number of adults attracted by each lures was not significantly different among the sites, showing no spot effect on the weevil capture

Calyptocephala paralutea sp.n. e descrição da larva e pupa (Coleoptera, Chrysomelidae, Cassidinae) Calyptocephala paralutea, sp.n. and description of the larva and pupae (Coleoptera, Chrysomelidae, Cassidinae)

<abstract language="eng">Adult, larva and pupa of Calyplocephala paralutea, a new species of Cassidinae, Spilophorini (Coleoptera, Chrysomelidae), from Porto Platon, Amapá, Brazil, is described