Gary LaFontaine describes this as a "sister species" of Brachycentrus numerosus. It is similar in most respects except that it emerges a couple weeks later. Where & When
» Species lateralis (Striped Grannom)
Regions:In Selective Trout, Swisher and Richards note that this is an important spring hatch in Michigan.
East, MidwestTime Of Year (?):
Late May or early June
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