Epiborkhausenites obscurotrimaculatus is known only from one fossil, the
holotype, specimen "No. 16,8 IGUW/AWS". It is a single, mostly complete female, preserved as a three-dimensional fossil in transparent yellow
amber. The amber specimen is from the fossiliferous Tyszkiewicz's Amber Mine which is located near the seaside town of Palanga. While the type description does not mention the geologic age of the amber, dating of the material based on the microfauna inclusions present gives a date of
37.7 mya. The type specimen is currently preserved in the
Palaeozoological Laboratory amber collections housed in the
University of Warsaw, located in
Warsaw, Poland.
Epiborkhausenites was first studied by Andrzej W. Skalski of
Częstochowa, Poland, with his 1973
type description being published in the journal
Acta Palaeontologica Polonica. The
generic name was coined by Skalski in reference to the similarity of the genus to the related genus
Paraborkhausenites. The
explanation for the
specific epithet obscurotrimaculatus refers the three dark spots that are visible on the
fore-wings. Visual comparison of
E. obscurotrimaculatus to other fossil species from amber showed a close relationship with
Paraborkhausenites innominatus,
Borkhausenites implicatella and
B. incertella.
Paraborkhausenites can be distinguished from
Epiborkhausenites by the vein structuring in the fore wings with
Paraborkhausenites having r1, r2, and r3 veins which run parallel to each other. In
Epiborkhausenites the spacing between the r1 and r2 is larger than the spacing between the r2 and r3. Based on the observable external character of the wing venation,
E. obscurotrimaculatus to the modern species
Tubuliferola josephinae,
Hofmannophila pseudospretella,
Himmacia huachucella,
Psilocorsis quercicella and
Inga sparsiciliella. Skalski notes that the species
Tubuliferola josephinae and
Hofmannophila pseudospretella both have a very similar color patterning of spots on the fore wings as that seen on
E. obscurotrimaculatus. ==Description==