Wings of Xyelidae from Goulet and Huber (1993, fig. 321) Hymenoptera of the world: an identification guide to families.,
, (1993)
[1].

Antena of Xyela redrawn from Gauld and Bolton (1988, fig. 41)The Hymenoptera,
, Oxford, (1988)
[2].

Wings of Macroxyela. From Comstock (fig. 424) The wings of insects,
, Ithaca, N.Y., (1918)
[3].