In addition, it begins to fly earlier in the spring than the other species in the genus.

The forewing is relatively wide and has a pronounced tip and hind corner, so that it becomes distinctly triangular.

[1][2][3][4] [5] To certainly determine the species of the genus Nematopogon dissection and study of the genitalia is necessary.

[7] It is found throughout most of Europe, except the Balkan Peninsula, Greece, Iceland and Ukraine.

Content in this edit is translated from the existing Norwegian Wikipedia article at no:Nematopogon swammerdamella; see its history for attribution.