1 | Postpedicel dark brown throughout; arista concolorous with postpedicel; three postsutural dorsocentral setae. | Trismegistomya pumilis Reinhard |
– | Basal portion of postpedicel distinctly orange; arista orange apically; four postsutural dorsocentral setae. | Trismegistomya jimoharai sp. n. |