The body size can vary between 6-7 mm upto 1 cm. The body length
of the samples that I collected during this hatch
was comprised between 6.5 and 7 mm.
The imitation of the subimago (dun) is probably the most fruitful and enjoyable, as it is
used during the hatch on rising fish. (Picture: S.ignita subimago female, B.W.O.)