Triacanthagyna ditzleri Williamson . Tikal, about dusk around camp, May 16, THH (274), 1 ♀ .

Williamson (1923) gives the maximum length of the stigma in the front wing as 3.6 mm; in the female from Tikal that length is 3.9 mm although other mensurable features are as stated in Williamson’s description. The Tikal specimen is apparently the northernmost record for this species, and the first record of it from the Yucatan Peninsula.