Acentrella nadineae
McCafferty, Waltz & Webb, 2009
small minnow mayfly
Acentrella nadineae is a small minnow mayfly in the Baetidae. The was described in 2009 and remained known only from nymphs until successful rearing produced the first documented . It inhabits cool, clean, swift rocky streams across parts of the eastern and midwestern United States. Near final instar nymphs exhibit unusual madicolous , living in thin water films on rock surfaces.
Pronunciation
How to pronounce Acentrella nadineae: //ˌeɪ.sənˈtrɛl.lə ˈnæ.dɪn.iː//
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Habitat
Cool, clean, swift rocky streams. Near final instar nymphs occupy madicolous —thin water films on rock surfaces.
Distribution
Eastern United States, including the northeast (documented from Hubbard River, Massachusetts), southeast, and midwest.
Life Cycle
Nymphs develop in streams. Near final instar nymphs exhibit madicolous before emerging. (male and female imagos) have been obtained through rearing, though details of -laying and full adult lifespan remain undocumented.
Behavior
Near final instar nymphs exhibit madicolous , inhabiting thin water films on rock surfaces rather than remaining fully submerged.
Similar Taxa
- Acentrella speciesOther Acentrella are morphologically similar as nymphs and share the characteristic difficulty in rearing to adulthood; A. nadineae is distinguished by specific morphological details of the stage and its documented madicolous in late instars.