dipterous

1. Of, relating to, or belonging to the Diptera, a large order of insects that includes the true flies and mosquitoes, characterized by a single pair of membranous wings and a pair of club-shaped balancing organs.
2. Having two wings, as certain insects, or winglike appendages, as certain fruits and seeds: the dipterous fruit of the maple.

[From New Latin Diptera, order name, from Greek dipteros, having two wings : di-, two; see di-¹ + pteron, wing; see -pter.]

1. Of or characteristic of insects of the order Diptera.
2. Having two wings or winglike appendages.

1. having two wings.
2. pertaining to insects of the order Diptera.

The adjective has one meaning:

Meaning #1: of or relating to or belong to the Diptera
  Pertains to noun: Diptera (meaning #1)