Review of Thompsoniella Guimarães with description of a new species from Colombia (Diptera, Calliphoridae, Mesembrinellinae). The Mesembrinellinae (Diptera, Calliphoridae) are exclusively Neotropical with nine genera comprising 36 recognized species, including the genus Thompsoniella Guimarães with a single species, T. anomala Guimarães. We describe a new species, Thompsoniella andina sp. nov., from the Departments of Antioquia and Caldas, Colombia (Cordillera Central of the Andes, between 2600 - 2700 m) and redescribe T. anomala. A key to the nine genera of Mesembrinellinae and a key to the males of the two species of Thompsoniella are provided. Color photographs to illustrate the two species of Thompsoniella and drawings of the male genitalia of both species are also provided. Here we record Thompsoniella for the first time in Colombia.

Durante dois anos de coleta (1986 a 1988) do Projeto de Levantamento da Fauna Entomológica do Paraná (PROFAUPAR) em oito localidades do Estado, foram coletados 3316 indivíduos da família Syrphidae, sendo 1607 no primeiro ano e 1709 no segundo. Cinco espécies (Toxomerus procrastinatus Metz, Toxomerus tibicen (Wiedemann), Microdon mitis Curran, Leucopodella gracilis (Williston) e Paramicrodon flukei (Curran) destacaram-se pelos níveis de abundância alcançados, num total de 1554 indivíduos. São discutidas as distribuições sazonais de abundância de cada uma destas espécies.

During two years (1986 to 1988) of the project "Survey of the Entomological Fauna in Paraná" (PROFAUPAR) carried out in eigth localities of Paraná, Brazil, 3,316 specimens belonging to Syrphidae were collected, 1,607 in the first year and 1,709 in the second. Five species were most collected in a total of 1,554 specimens and their seasonality are evaluated: Toxomerus procrastinatus Metz, Toxomerus tibicen (Wiedemann), Microdon mitis Curran, Leucopodella gracilis (Williston) and Paramicrodon flukei (Curran).

São descritos os seguintes novos táxons: Henriquella gen. nov. (espécie-tipo Mesembrinella spicata da Costa Rica, La Suiza), Giovanella gen. nov. com Giovanella bolivar sp. nov. (espécie-tipo) da Venezuela, Bolivar e Huascaromusca lara sp. nov. da Venezuela, Lara. Mesembrinella spicata Aldrich, 1925 anteriormente considerada como sinonímo de Calliphora xanthorrhina Bigot, 1887, é restabelecida e transferida para Henriquella gen. nov., tornando-se Henriquella spicata (Aldrich, 1925) sp. rev., comb. nov. Ilustrações dos holótipos, incluindo as respectivas terminálias, também são fornecidas.

The following new taxa are described: Henriquella gen. nov. (type-species Mesembrinella spicata from Costa Rica, La Suiza), Giovanella gen. nov. with Giovanella bolivar sp. nov. (type-species) from Venezuela, Bolivar, and Huascaromusca lara sp. nov. Venezuela, Lara. Mesembrinella spicata Aldrich, 1925 formerly considered as synonym of Calliphora xanthorrhina Bigot, 1887, is reinstated and transferred into Henriquella gen. nov., becoming Henriquella spicata (Aldrich, 1925) sp. rev., comb. nov. Illustrations of the holotypes, including the respective terminalia, are also given.

The life expectancy of Sarconesia chlorogaster (Wiedemann, 1830) reared in artificial diet and controlled temperatures chamber set at 27±1oC, 70±10% RH and 12 hours of photophase was analysed using entropy (H). Entropy (H) was used to quantify the distribuition of deaths between ages and then quantify the impact of mortality on life expectancy. The entropy values obtained for males (H=0,245) and females (H=0,299) were intermediary between the theoretical values of H=0,5 and H=0 suggesting a tendency toward rectangular distribuitions in both sexes. The effect of mortality across ali ages on expectation of life was different at each age. For males the highest values were found between days 10 and 20 and between days 15 and 25 for females. This íindings imply that small changes in female mortality will have a greater impact on female life expectancy than will have on male expectation of life.