Fairfax County Environment - Meet the hellgrammite, the larval stage of the Dobson fly. This critter is a benthic macroinvertebrate; an insect that lives on the bottom (benthic) of a stream or

Description

Meet the hellgrammite, the larval stage of the Dobson fly. This critter is a benthic macroinvertebrate; an insect that lives on the bottom (benthic) of a

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