It is of fundamental importance the contribution of insects in the physical breakdown of organic compounds in the nutrient cycle, this action is well established in the larval stage, given its higher speed of metabolism. This work aims to contribute to the identification of insect larvae that live in the soil and burlap, emphasizing the order Diptera, evaluating the abundance and classifying them according to the type of activity in the soil. To this end, larvae from Pitfall traps and WinckIer extractors (two campaigns, 06 and 1112001) and decomposition bags (one campaign, 1012001) in the area of the Ferreira Penna Scientific Station were screened and analyzed. The analysis of the material from Pitfal and Winckler resulted in 541 identified specimens which include: coleopterans (47.8%); dipterans (34.5%); lepidopterans (9.6%); homopterans (3%); hymenopterans (2.4%) and 9 other orders (2.7%). To date, 14.4% of diptera have been identified at the farru1ia level: Ceratopogonidae (56%); Psychodidae (16%); Otitidae (8%); Cecidomyiidae (4%); Muscidae (4%) and Tabanidae (4%). In the decomposition bags were obtained: hymenoptera (61%); diptera (11.5%), diplurids (8%); isoptera (7%); coleoptera (6.3%); lepidoptera (3.5%) and 3 other orders (2.7%). The 38.5% of diptera identified at the family level, are: Psychodidae (40%); Ceratopogonidae (20%) and Phoridae (40%). Some families found, develop in decomposed plant matter and excrement, such as Psychodidae, and others have predatory larvae, such as some Ceratopogonidae. The continuity of the work will include characterization of these guilds.
|
