Eudonia dupla Clarke 1986

Eudonia dupla

Alar expanse 13–14 mm.

Labial palpus basal segment white; second and third segments fuscous, inner side streaked with whitish scales. Antenna fuscous. Head fuscous, mixed with whitish scales. Thorax fuscous, streaked with whitish to buff scales. Forewing ground color fuscous variously marked with buff to whitish; at basal third, from costa to dorsum, a whitish transverse line; at apical third of costa a conspicuous, whitish triangular spot; on dorsum, just before tornus a short transverse dash; in cell some whitish scaling; before apex two small whitish or buff spots and a similarly colored spot just beyond tornus; terminal line slender, buff to whitish; cilia whitish to buff with a fuscous basal line. Hindwing of male grayish fuscous; female fuscous; cilia buff to whitish with grayish fuscous () or fuscous () basal line. Legs buff to whitish variously marked with fuscous or grayish fuscous. Abdomen fuscous dorsally, whitish ventrally.

Male genitalia slides USNM 25345, 25378, 25397, 25398, 25407. Harpe narrowest at base, gradually broadening to a rounded cucullus. Gnathos slender, slightly dilated distally. Uncus narrowly triangular, truncated; densely clothed with setae distally. Vinculum rounded. Tegumen narrow posteriorly. Anellus pyriform. Aedeagus as long as harpe, stout, curved; vesica armed with a small granulated disc.

Female genitalia slide USNM 25348, 25408. Ostium broad, transverse, funnel-shaped. Inception of ductus seminalis at junction of sclerotized and membranous parts of ductus bursae. Ductus bursae posterior half sclerotized; anterior half membranous, coiled. Bursa copulatrix membranous, finely granular; appendix bursae membranous. Signum an oval, finely dentate plate.

HOLOTYPE.—USNM 100747.

TYPE-LOCALITY.—Fatu Hiva, Mt. Teoaiua, 2000 ft (610 m).

DISTRIBUTION.—Fatu Hiva, Hiva Oa.

FOOD PLANT.—Unknown.

Described from the holotype, 28 and 28 paratypes as follows. Fatu Hiva: Mt. Teoaiua, 2000 ft (610 m), 22 Mar 1968, 23, 10 Tahuna, 2000 ft (610 m), 27 Mar 1968, 3, 9 Mt. Upe, 2025 ft (617 m), 3 Apr 1968, 2, 2 Omoa, 11–16 Mar 1968, 3. Teavapuhiau, Ouia, 750m, 1–3 Aug 1977, 2 (Montgomery). Hiva Oa, Ootua, 800m, 27–30 Jul 1977, 2 (Montgomery).

The males of dupla are similar to clerica but the females of dupla are darker and more like spectacularis. Both clerica and spectacularis lack the prominent whitish subapical spot on costa. The anellus of officialis is much narrower than that of dupla.

Eudonia dupla is a moth in the family Crambidae. It was described by John Frederick Gates Clarke in 1986. It is found on the Marquesas Archipelago in French Polynesia.