She is a Dipteron, or Fly, five millimetres long.
"Bramble-bees and Others" by J. Henri Fabre
In her eyes, which see farther than ours, the Eristalis is an odious Dipteron, a lover of corruption, and nothing more.
"More Hunting Wasps" by J. Henri Fabre
Wing venation of a Dipteron.
"Explanation of Terms Used in Entomology" by John. B. Smith