 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".The holotype female is considered remarkably well preserved and complete, missing only the palpi labiales which were possibly plucked.