Date of this Version
The Nearctic stonefly genus Perlinella Banks is reviewed; three valid species are recognized. Perlinella drymo (Newman) and Perlinella ephyre (Newman) are widespread east of the Rocky Mountains, whereas Perlin ella zwicki, n. sp. (P. jumipennis of Zwick 1971), is restricted to the southeastern Coastal Plain. Perlinella jumipennis (Walsh) is replaced as a synonym of Perlinella ephyre. Keys for adults and nymphs are provided, and the nymph of P. zwicki is described for the first time. Male drumming calls of Perlin della drymo and Perlinella ephyre are described.