### Identification A master of forest-floor camouflage, *Agnathosia nana* is a diminutive member of the Tineidae (fungus moth) family, sporting a wingspan of just 12–16mm. At rest, it adopts a roof-like posture that mimics a splinter of bark. Its forewings are a sophisticated mosaic of mottled charcoal, silver-grey, and ochre, creating a "salt-and-pepper" effect that vanishes against lichen-covered wood. To distinguish it from the closely related *Agnathosia mendicella*, look for its smaller size and the lack of a prominent, dark rectangular blotch on the wing's leading edge. The most charming field mark is its "shaggy" head—a dense, unruly tuft of pale scales that gives the moth a perpetually uncombed appearance.
### Habitat & Range This species is a specialist of ancient European broadleaf forests, ranging from the lowlands of Central Europe to the sun-drenched oak groves of the Mediterranean. You won’t find it in manicured parks; it requires "messy" ecosystems rich in standing deadwood and fallen logs. It is particularly fond of beech and oak forests where humidity remains high enough to support its primary food source: bracket fungi.
### Behaviour *Agnathosia nana* is primarily nocturnal, but a sharp-eyed naturalist can find adults during the day resting motionless on the trunks of old trees. When disturbed, they don’t fly far; they prefer a frantic, spiraling flutter before diving into a crevice in the bark. Breeding occurs in mid-summer, with females carefully depositing eggs directly onto the porous undersides of fungi.
### Diet While the adults likely sip nectar or moisture, the larvae are dedicated "fungivores." They bore into the tough, woody fruiting bodies of bracket fungi (such as *Trametes* or *Phellinus* species). They spend their youth tunneling through these fungal structures, protected from predators while consuming the nutrient-dense mycelium.
### Fascinating Fact Despite their delicate appearance, these moths are the "recyclers" of the forest. Without *Agnathosia nana* and its kin, the tough, structural proteins in bracket fungi would take decades longer to break down, proving that even a tiny moth with a "bad haircut" plays a vital role in the forest's circle of life!