Identification
Adult Markings: This species has strongly contrasting white and light brown patterning. The face, palpi, head, and thorax are silvery white and the forewing ground color is light brown. The silvery white central band on the thorax continues as a band of variable width on the inner margin of the wing, but is interrupted by projections of the brown area to create two large, silvery patches. The band markedly narrows between the second (median) patch and the anal angle. Three white, oblique costal streaks project towards the white band on the inner margin. The first usually joins the large basal patch, while the others are curved and tapered, and do not reach the band along the inner margin. There is also a white apical spot that is edged with a black crescent near the wing tip. Individuals characteristically rest with the front of the body raised well above the surface of the substrate.
Wingspan: 9 mm (Forbes, 1923).
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: The larvae mine the lower leaf surfaces of oaks. The early instar larva initially creates a long, narrow, winding mine that eventually balloons into a large, tentiform blotch (Eiseman, 2019). The last instar develops a reddish coloration, and eventually evacuates the mine and spins a flat, brownish cocoon. Larvae complete their development in approximately 10 days in Florida populations. The pupal stage is also very brief (Cornelissen and Stiling, 2006; Eiseman, 2019).
Larvae ID Requirements: Identifiable from good quality photos, especially where associated with known host plants.
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