Setiostoma earobasis Duckworth 1971

Setiostoma earobasis

Alar expanse 13 mm.

Eye index .56 male.

Antenna brown, scape flecked with pale yellow; sensory hairs of male approximately 2 × diameter of shaft basally, gradually reduced beyond. Head, labial palpus dark brown, heavily sprinkled with pale yellow scales. Maxillary palpus brown. Base of proboscis brown. Thorax pale yellow sprinkled with brown. Legs dark brown; foreleg with coxa brown, remainder missing; midleg, hindleg with tibia and tarsi missing. Forewing pale yellow basally, edged with dark brown on costa from base and at anal angle; distal margin of yellow area bordered by a dark brown line immediately paralleled by a broad, transverse band of iridescent violet. Apical half of forewing dark brown suffused with iridescent blue violet. Cilia dark brown. Hindwing dark brown with white patch on anterior margin; cilia dark brown basally, lighter beyond.

MALE GENITALIA. (WDD 3650).—Uncus recurved, blunt apically; gnathos a simple band; harpe simple, apical third of costal margin greatly expanded, bearing a tight cluster of palmate, recurved, multilobed setae immediately basad of expanded area; ventral margin of harpe as in S. cnecobasis; vinculum moderate, ends separate; anellus broad with narrowed base appearing pedicellate, with two broad, lateral lobes approximately twice as wide apically as basally, apical margins irregularly excavate, medioapical margin produced, forming apical spines; aedeagus of approximately uniform width throughout, vesica armed with numerous cornuti, a virtually complete basal ring of heavy spines, a medial cluster of longer heavy spines, a single large bladelike apical spine.

FEMALE GENITALIA.—Unknown.

TYPE.—In the British Museum (Natural History).

TYPE LOCALITY.—Yungas de La Paz, Bolivia.

HOST PLANT.—Unknown.

DISTRIBUTION.—Known only from the type locality.

Rectiostoma earobasis is a moth in the family Depressariidae. It was described by W. Donald Duckworth in 1971. It is found in Bolivia.

The wingspan is about 13 mm. The forewings are pale yellow basally, edged with dark brown on the costa from the base and at the anal angle. The distal margin of the yellow area is bordered by a dark brown line immediately paralleled by a broad, transverse band of iridescent violet. The apical half of the forewing is dark brown suffused with iridescent blue violet. The hindwings are dark brown with white patch on the anterior margin.