Sionei R. Bonatto

Análise morfológica das formas imaturas de Sarconesia chlorogaster (Wiedemann) (Diptera, Calliphoridae, Toxotarsinae)

Morphological characteristics of the immature of Sarconesia chlorogaster (Wiedemann, 1830) were obtained rearing it on an artificial diet in a temperature controlled chamber set at 27±1oC, 70±10% RH and 12 hours photophase. The egg, three larval instars and puparium were described and illustrated together with the lairval cephalopharyngeal skeleton. Some characters were studied, for the first time using the scanning electron microscopy.

Ciclo de vida de Sarconesia chlorogaster (Wiedemann) (Diptera, Calliphoridae, Toxotarsinae), criada sob condições de laboratório em dieta artificial

Bionomic characteristics of Sarconesia chlorouaster (Wiedemann, 1830) were obtained, rearing it with an artificial diet and a conlrolled temperature chamber set at 27±loC, 70± 10% RH and 12 hours photophase. The duration of the wholeevolutive cycle ofS. cholorogaster was about 19.61 days. The incubation period was the shortest (14.30 hours), the pupal one (pre-pupal and pupal together) was the longest (9.57 days), followed by the larval period that had about 9.44 days. A life table for immature stages was done in order to obtain a survival curve. The average of the adults longevity was about 25.28 days. There is no statistical difference between the duration of male and female longevity. The duration of the periods of pre-posture and posture were almost the saine (8.41 and 10.96 days respectively), but the period of pos-posture was the shortest (5.15 days). The life tables for adults, males and females were also done and the survival curves were obtained. The results were similar for both sexes. Through the life table of fertil ity the number of generations of S. chlorogaster was estimated to be 9.81 generations/year. The females had a high fertility under the laboratory conditions used.

Review of Thompsoniella Guimarães with description of a new species from Colombia (Diptera, Calliphoridae, Mesembrinellinae)

Review of Thompsoniella Guimaraes 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 Guimaraes with a single species, T. anomala Guimaraes. 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.

Análise de sobrevivência e estimativa de entropia para Sarconesia chlorogaster (Wiedemann) (Diptera, Calliphoridae)

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 iindings imply that small changes in female mortality will have a greater impact on female life expectancy than will have on male expectation of life.