Setiostoma cnecobasis Duckworth 1971

Setiostoma cnecobasis

Alar expanse 11–13 mm.

Eye index .71 male.

Antenna dark brown, scape flecked with yellow, segments beyond scape annulated with yellow to basal fourth; sensory hairs of male approximately 2 × diameter of shaft basally, gradually reduced to 0.25 × apically. Head, labial palpus dark brown, heavily sprinkled with white scales. Maxillary palpus white. Base of proboscis dark brown. Thorax pale yellow mixed with white. Legs dark brown sprinkled with white; foreleg with three white tarsal rings; midleg with two tarsal rings, tip, white; hindleg with tibial spurs light brown to white, two tarsal rings, tip, white. Forewing pale yellow mixed with white basally, concolorous and continuous with thorax and tegula; 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, iridescent green highlights scattered along dorsum. Cilia dark brown. Hindwing dark brown with white patch on anterior margin; cilia dark brown basally, light brown medially, white apically.

MALE GENITALIA (WDD 3683).—Uncus recurved, truncate apically; gnathos a simple band; harpe simple, costal margin greatly expanded from apical two thirds to just before apex, bearing a tight cluster of palmate, recurved, multilobed setae immediately basad of expanded area; ventral margin with raised sclerotized ridge from midpoint to apical three fourths bearing row of erect, wedge-shaped setae; vinculum moderate, ends separate; anellus a narrow plate bearing four lateral lobes, a more median anterior pair of large lobes distinctly expanded apically with the outermost corners of apices produced into posteriorly curving points, and a more lateral, posterior pair lightly sclerotized, falciform; aedeagus approximately uniform in width throughout; vesica armed with numerous cornuti, an incomplete basal ring of moderate to small spines, a median cluster of longer spines, an apical patch of short heavy spines, a single very large bladelike spine.

FEMALE GENITALIA.—Unknown.

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

TYPE LOCALITY.—Bolivia.

HOST PLANT.—Unknown.

DISTRIBUTION.—This species is presently recorded from the high highlands in Peru and presumably the same area in Bolivia.

ADULT RECORDS.—BOLIVIA: No locality (no date); PERU: Cuzco (no date).

Rectiostoma cnecobasis is a moth in the family Depressariidae. It was described by W. Donald Duckworth in 1971. It is found in the high highlands of Peru and Bolivia.

The wingspan is 11–13 mm. The forewings are pale yellow mixed with white basally, concolorous and continuous with the thorax and tegula. 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. There are iridescent green highlights scattered along the dorsum. The hindwings are dark brown with a white patch on the anterior margin.