Ephemeri vita, or, The natural history and anatomy of the Ephemeron, a fly that lives but five hours written originally in Low-Dutch by Jo. Swammerdam ...
Swammerdam, Jan, 1637-1680., Tyson, Edward, 1650-1708.
Figure 2.

Representeth the Male Ephe∣meron almost uncased, so that the two outermost Wings and the Tails, by a small stripping off the Skin will become wholly freed.