The distinguishing features of this species are the colorful wings and the male external copulatory organs, especially the laterally protruding lobes of the 10th segment.

[1] The ninth segment of the external copulation organs of males are wide with the anterior edge projecting out in the lower third area.

[1] The pre-anal appendages are long, oval, and erect, and in the cavity of a projecting side lobe of the 9th segment.

[1] Laterally the lower appendages are short and triangular, but ventrally they appear long, slender, and directed outwards.

[3] The type locality for A. krampus is Kongi (alternatively spelled Komgi[2]) on the Gazelle Peninsula on the island of New Britain in Papua New Guinea[5] at about 1000 m elevation.