Figs. 11, 42, 65

Epagoge vinolenta Walsingham 1913: 212 (in part).

Diagnosis. This species is most similar to the sympatric S. hydeana but can be separated from the latter by its orange forewing color and light colored hindwings. The male genitalia of S. calthograptana are distinctive, with a truncate apex of the valva and the crease of the valva terminating subbasally on the sacculus. Females are most similar to those of S. hydeana, but the signum of S. calthograptana tends to be shorter and slightly more curved.

Description. Male. Head: Frons yellowish white to pale orange, smooth scaled; vertex roughened, pale orange to brownish orange. Labial palpus yellowish white mesally, orange laterally. Antennal scaling yellowish white to pale orange. Thorax: Dorsum smooth scaled, pale orange to brownish orange. Forewing length 10.3–11.4 mm (= 11.0; n = 4). Forewing ground color yellowish brown to brownish orange with uniform speckling of brown-tipped scales, pattern elements brownish orange to brown, indistinct subterminal fascia brown, brown transverse strigulae throughout subterminal and terminal areas, occasionally with an indistinct brown tornal mark approaching discal cell, often with suffused brown spot at apex of discal cell. Fringe yellowish white to pale orange. Hindwing white to yellowish gray with pale brown to brownish gray transverse strigulae throughout, more dense in apical and distal regions. Abdomen: Genitalia (Fig. 11; slide #JAP3177; EME; Mexico, Hidalgo, near Jocala; n = 4) with uncus long, slender, uniform in width, bent at nearly 90° angle two-thirds distance from base, with sparse long setae dorsally and patch of short setae ventrally; tegumen raised and triangular at base of uncus; socius rounded posteriorly, secondary arms long, slender, abruptly angled near middle, enlarged apices asymmetrically lobed, boot-shaped; transtilla strongly sclerotized, strongly bilobed, spines short, numerous over most of posterior margin, anterior process reinforced with variably formed invagination at middle; valva short, subrectangular with sclerotized straight or slightly curved crease roughly parallel to sacculus or slightly inclined and not connecting to base of sacculus, sacculus and costa straight, pulvinus present; phallus pistol-shaped, aedeagus parallel-sided and slightly curved, shorter than phallobase, attenuate apically, attached to juxta by a slender process; cornuti with a minute spine near base.

Female. Head, Thorax: Essentially as described for male, except forewing darker and more strongly marked; ground color orange to brownish orange. Forewing length 10.1–12.2 mm (= 11.2; n = 7). Hindwing yellowish gray with gray transverse strigulae. Abdomen: Genitalia (Fig. 42; slide #JJK153; NMNH; Mexico, Hidalgo, near Jocala; n = 5) with papillae anales parallel-sided, rounded posteriorly; sterigma strongly sclerotized ventrally, concave anteriorly; ductus bursae short, widening anteriorly; corpus bursae large, irregularly rounded; signum more than three times as long as wide, simple, straight or weakly curved, weakly bilobed, attenuate at apices.

Type material. Holotype: Male: MEXICO: HIDALGO: near Jocala, 2–3.vii.1965, O. Flint & Ortiz (NMNH).

Paratypes (3♂, 6♀). MEXICO: HIDALGO: near Jocala, 2–3.vii.1965 (1♂, 6♀), O. Flint & Ortiz (EME, NMNH). 26.2 km N Zimapan, Hwy 85, 2562 m, 19.v.1973 (1♂), T. Erwin & G. Hevel (NMNH). Guerrero Mill., 9000’, [no date] (1♂), Mann & Skinner (NMNH).

Additional specimens examined. MEXICO: MEXICO: Popocatepetl Park, 8000’, vi.1906 (1 F), W. Schaus (NMNH).

Immature stages. Unknown.

Distribution. This species is known only from the higher elevations of northwestern Hidalgo and Popocatepetl Park, Mexico.

Remarks. The female from Popocatepetl Park was included in the type series of S. vinolenta by Walsingham (1913). Because the slide-mounted genitalia are badly damaged, this specimen is excluded from the type series of S. calthograptana.

Etymology. The specific epithet is from the Latin “caltha” (= marigold) and the Greek “graptos” (= marked), and refers to the forewing coloration.