|( Costa , 1836)|
The moths reach a wingspan of 9 to 16 millimeters. The head is yellowish white and mixed with gold at the back. The first two thirds of the antennae have a dark brown sheen and are whitish ringed. In the last third there are five white rings. The thorax shines golden brown and is lined with glossy white at the back. The forewings also have a golden-brown sheen and yellowish lines on the inner edge of the wing at the base. The drawing of the forewings includes some raised golden spots. Near the base of the forewing, three golden spots are arranged on a line sloping outwards. This begins immediately below the Costa loader and extends beyond the anal fold. A white costal spot, which is sometimes missing, is 1/5 of the forewing length. It is connected on the outside with three golden spots, which lie on a line that runs obliquely outwards and curved inwards to the inner edge of the wing. The second white costal spot is at 2/3 of the forewing length and is connected on the outside with a golden spot. The third white costal spot is 3/4 of the forewing length. It is connected to a golden spot directly below. There are also several golden spots. The first subdorsal spot is slightly outside of the second costal spot. The second is above the center of the wing between the second and third costal spots. The third spot is at the interior angle inward of the third costal spot and the fourth spot is at the apex . Six to eight small golden lines are distributed in the apical area. The hind wings shine gray. The abdomen shines gray-brown and shimmers golden.
In the male, the tegumen tapers slightly distally and has a “U” -shaped bulge at the back. The right brachium is curved and almost twice as long as the left. It has a very widened and heavily sclerotized apex and a small lobe on the inside of the base. The left brachium is curved and has a blunt apex. The blades are concave and have a short, rounded cucullus. The right valvella is large and parallel-walled. It is about as long as the tubular part of the aedeagus and tapers distally to a rounded apex. The aedeagus is slightly curved. The bulbous part is oval, the tubular part is quite wide and tapers to a sharp point.
In the females, the eighth segment is longer than it is wide. The ostium is semicircular. The sterigma is sickle-shaped. The ductus bursae is slightly shorter than the corpus bursae. The corpus bursae is oval and has a short, broad, abruptly tapering process behind. There are two large scale-shaped signs of different sizes.
Eteobalea isabellella differs from all other species of the genus by the golden-brown color of the forewings and the numerous raised golden-shiny spots on the forewings.
The biology of the species is unknown. The moths were collected from late May to early September.
The following synonyms are known from the literature:
- Ornix isabellella Costa , 
- Ornix hisabellella Costa , 
- Stagmatophora opulentella Herrich-Schäffer , 1853
- Stagmatophora rutilella Chrétien , 1896
- J. C. Koster, S. Yu. Sinev: Momphidae, Batrachedridae, Stathmopodidae, Agonoxenidae, Cosmopterigidae, Chrysopeleiidae . In: P. Huemer, O. Karsholt, L. Lyneborg (eds.): Microlepidoptera of Europe . 1st edition. tape 5 . Apollo Books, Stenstrup 2003, ISBN 87-88757-66-8 , pp. 146 (English).
- Eteobalea isabellella in Fauna Europaea. Retrieved February 23, 2012
- Determination aid of the Lepiforum for the butterfly species found in Germany, Austria and Switzerland. Eteobalea isabellella (O. COSTA, 1836). Lepiforum e. V., accessed on February 23, 2012 . Taxonomy and photos