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Map of the sites holding the search term ""Valvata piscinalis""

There are 4 sites that mention "Valvata piscinalis".

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River Test

… rich in aquatic molluscs, with two national rarities RDB,* see note, reported, Valvata macrostoma RDB2 and Odhneripisidium tenuilineatum RDB3. The former is a calcicole snail living in still or slow flowing water amongst abundant submerged vegetation, the latter is a pea mussel …

River Itchen

…nd rivers, has been recorded. Gastropod molluscs are also present in the river, Valvata piscinalis, Gyraulus albus and Theodoxus fluviatilis. Two nationally scarce rifle beetles, Riolus cupreus and Riolus subviolaceus, both of which occur in moderately flowing water on stones and…

River Wensum

…aquatic vegetation at the river's edge. Two other aquatic molluscs which occur, Valvata piscinalis and Gyraulus albus, have a localised distribution in England. Water beetles are well represented; Brychius elevatus, of localised distribution in England, is found in deep slow flow…

River Frome

…t in well vegetated stretches, including two species of localised distribution: Valvata cristata and V. piscinalis. Two nationally rare invertebrates occur in the lower Frome: firstly, the medicinal leech, Hirudo medicinalis, a species which is specially protected under Schedule …

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