Paraleuctra

Hanson, 1941

rolled-winged stoneflies

Species Guides

2

Paraleuctra is a of rolled-winged stoneflies in the Leuctridae, comprising 27 valid distributed across the Nearctic and Palaearctic regions. The genus was established by Hanson in 1941 and is characterized by with weak flying ability that inhabit vegetation along stream banks. Nymphs are aquatic and restricted to cold, oxygen-rich water environments. Recent taxonomic revisions using molecular and morphological data have resolved synonymies within the genus, particularly among Palaearctic species.

Paraleuctra vershina by no rights reserved, uploaded by Mike Palmer. Used under a CC0 license.Paraleuctra vershina by no rights reserved, uploaded by Mike Palmer. Used under a CC0 license.Paraleuctra vershina by no rights reserved, uploaded by Mike Palmer. Used under a CC0 license.

Pronunciation

How to pronounce Paraleuctra: /ˌpærəˈljuːktrə/

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Images

Habitat

Nymphs inhabit cold streams, springs, and rock fissure seepage with high dissolved oxygen. occur on herbs, grasses, and shrubs along stream banks.

Distribution

Nearctic: Alberta, Alabama, Alaska, British Columbia. Palaearctic: Russia, China (Henan, Shaanxi, Anhui, Hubei, Sichuan, Yunnan, Zhejiang, Fujian), Siberia.

Diet

Nymphs feed on mosquito larvae, plant fragments, and . consume algae, moss, lichens, and leaves.

Life Cycle

Females lay in water after mating. Nymphs develop aquatically in cold, oxygen-rich waters. emerge and live on bank vegetation for days to weeks.

Behavior

exhibit weak flying ability and positive . Adults aggregate in groups conducive to mating. Nymphs have narrow ranges.

Ecological Role

Nymphs function as both (consuming mosquito larvae) and herbivores/ (processing plant fragments and ). Common inhabitants of stream .

Sources and further reading