Gros-bec errant atypique, possédant à la fois des caractéristiques mâle et femelle. Cette particularité est appelé gynandromorphisme. // Atypical evening grosbeak, possessing both male and female characteristics. This peculiarity is called gynandromorphism.

I wondered if it might be a bilateral gynandromorph because it has one complete left wing like a male, reduced right wing like a female. However on closer inspection I think it is more likely simply to be a male with a malformed right wing

So, this is a polyergus bilateral gynandromorph! ½ worker caste (red), ½ alate (black). The mandibles, eyes, single wing, and antennae are the more obvious caste traits reflected in each half of this individual. Found them shortly after leaving the colony possibly (I found one a few feet away).
See: https://www.inaturalist.org/observations/124878696
& https://www.inaturalist.org/observations/124879042