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Cimbex fagi

Description

Cimbex fagi is a species of sawfly belonging to the family Cimbicidae. Sawflies are a group of insects closely related to wasps, bees, and ants, but they do not possess the characteristic "waist" of these other hymenopterans. Cimbex fagi is relatively large for a sawfly, with a robust body. It is generally dark in color, often with yellow or reddish markings. The adults have clubbed antennae, and the wings are transparent with a brownish tint. The larvae resemble caterpillars and are often green with white or yellow stripes, which helps them blend into their host plants. They are known to feed on the leaves of broadleaf trees, particularly beech (Fagus species), which is reflected in the species name "fagi." The larvae feed on leaves, and after a period of growth, they will pupate, usually in the soil, before emerging as adults. This species is typically found in forests or areas with plenty of host trees, especially beech trees. Not very common. Cimbex fagi is primarily found in Europe, where beech trees are common. While Cimbex fagi is not usually considered a major pest, large populations of larvae can cause noticeable defoliation of their host trees. However, this typically does not lead to significant long-term damage to the trees.