Blackfly
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
A black or dark green
aphid
that is a common
pest
of agricultural crops.
noun.
Any of various small black
bloodsucking
flies
of the family Simuliidae.
Word Usage
"Noseeums are a particularly nasty, and tiny, species of 'blackfly' which inhabit northern woodlands."