L. Forró szerk.: Miscellanea Zoologica Hungarica 9. 1994 (Budapest, 1994)

Andrikovics, S.; Hadnagy, T.: Ecological evaluation of aquatic invertebrates distribution of Apátkút Creek (Visegrádi Mountain, Hungary) in winter

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9 Fig. 7. Connection between abundance of larvae and waterdepth in the course of exploratory collection in case of permanent water velocity (2 m/sec) and stone size (15-20 cm) Vegetation reaching the water from creek side does not mean low water velocity and small dissolved oxygen content at all. Here larvae can be found in greater number of individuals and species. 57% of Lymnephilidae live on this type of substrate. Finally, on areas with highest water velocity and largest dissolved oxygen content, all of the 8 species can be found in great numbers. The figures show the percentage of number of individuals of some collected species. Epeorus silvicola and Hydropsyche pellucidula we found only on stones. Epeorus silvicola requires stone and current in the largest extent among the other larvae. Morphologically, the body of the larva of this species is the most flattened, which adopted the most to the strong current.