Ectoedemia aegaeica

Adults have a wingspan of 4.0–4.2 mm, making them among the smallest European moths. The head tuft is ochreous-yellow to rust-yellow, and the eye-caps (enlarged scales that partly cover the eyes) are paler, sometimes bearing a few dark scales. The forewings are ochreous densely dusted with black-brown scales; a faint cross-band may be visible just beyond the middle. The hindwings and the fringe are grey, and the sexes are similar in external appearance.^[2]

Male genitalia show long, strap-like valvae that are more than twice as long as wide, while the uncus (a leaf-shaped or hooked clasp at the rear of a male moth's genital capsule) is broader and differently curved than that of E. groschkei. The female genital tract bears very wide anal papillae fringed with long setae, and the bursa (a thin-walled pouch in the female that receives and stores the spermatophore) contains a complete ring-shaped signum (a sclerotised plate embedded in the bursa that helps anchor the spermatophore). Such details are important because, in this family of tiny moths, species limits are determined chiefly by genital structure rather than colour pattern.^[2]

Larvae mine the leaves of their food plant, feeding between the upper and lower epidermis and creating a narrow serpentine gallery. Although no rearings have yet connected larva to adult with certainty, mines tentatively assigned to E. aegaeica are slightly narrower than those of E. groschkei on the same host. Pupation takes place in a silken cocoon spun on the underside of the leaf outside the mine.^[2]

Confirmed records come from Greece, including Laconia and Phthiotis on the mainland and the islands of Rhodes and Crete. The moth seems restricted to warm, low-lying sites influenced by the Aegean Sea, where Mediterranean scrub is interspersed with chaste tree thickets along watercourses and in damp clearings. Adults have been found from mid-May to late June, suggesting a single generation per year, and their presence is closely linked to the distribution of Vitex agnus-castus, which also provides shelter and nectar sources in these habitats.^[2]