Skip to main content

Electrogena affinis (Scarce yellowstreak)

Electrogena affinis was found in the River Derwent, Yorkshire in 1988 and may be present in other watercourses.  Nymphs of this species are typically found in slower flowing areas of lowland rivers, often where there is abundant marginal and emergent vegetation.  They are usually found clinging to submerged plants and stones, although they may swim if disturbed.  E. affinis feeds either by scraping periphyton from the substrate or by gathering fine particulate organic detritus from the sediment.  There is one generation a year, which usually overwinters as nymphs and emerges between July and August.

 


J


F


M


A


M


J


J


A


S


O


N


D