Ceratophaga vicinella

Distinguished from other tineid moths by the combination of blackish-brown forewings with tiny white spots and the prominent cream-colored head tuft. The species is most reliably identified by its exclusive association with gopher tortoise shells; no other North American tineid shares this specific ecological requirement. Similar dark tineids lack the cream head tuft and white forewing spotting pattern.

Adults are small moths with blackish-brown forewings, each bearing a tiny white spot. The head features a prominent tuft of cream-colored hair. Larvae are whitish with a dark brown head.

Open, sandy habitats supporting gopher tortoise populations, including pine flatwoods, scrub, and coastal dunes. Larval habitat is strictly limited to the shells of dead gopher tortoises, where they construct silk tube masses anchored in surrounding soil.

Restricted to the southeastern United States, primarily Florida and Mississippi. Distribution is limited by the range and population status of the gopher tortoise (Gopherus polyphemus).

Larvae feed exclusively on solid keratin from the shells of dead gopher tortoises (Gopherus polyphemus). This represents the only known lepidopteran diet consisting entirely of tortoise shell keratin. Adults do not feed.

• Gopherus polyphemus - obligateExclusive larval food source; keratin from dead tortoise shells

Eggs are laid on or near dead gopher tortoise shells. Larvae feed gregariously on keratin and construct an extensive mass of silk tubes on the underside of the shell, anchored in soil to depths of approximately 10 cm. These tubes may provide protection from temperature extremes and parasitoids. Larvae pupate within the silk tubes. Adults emerge from the pupal cases within the tubes.

Larvae feed gregariously in groups on tortoise shells. They construct communal silk tube systems that serve as anchors and protective structures. The deep soil penetration of silk tubes (to 10 cm) has been observed, possibly functioning in thermoregulation and defense against natural enemies.

Specialized decomposer of keratinous material from gopher tortoise remains. The species contributes to nutrient cycling in tortoise habitat ecosystems through breakdown of otherwise recalcitrant keratin. Population serves as an indicator of gopher tortoise population health.

No direct economic or medical significance. The species has conservation relevance as an indicator of ecosystem health and gopher tortoise population status. Its decline reflects broader conservation concerns for the gopher tortoise and its associated community of commensal species.

• Ceratophaga (other species)Other species in the genus feed on horns and hooves of dead ungulates rather than tortoise shells; geographic and host separation distinguishes C. vicinella
• Other TineidaeMost tineids feed on fungi, detritus, or stored products; none share the exclusive tortoise shell keratin diet of C. vicinella

• keratinophagous
• specialist
• threatened
• host-specific
• decomposer
• indicator species
• Tineidae
• Lepidoptera
• endangered host association
• southeastern USA
• Florida
• Mississippi
• gopher tortoise
• Gopherus polyphemus
• gregarious larvae
• silk tube construction

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• In Defense of Clothes Moths, Marvels of Evolution