Moths of North Carolina
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19 NC Records

Eugnosta bimaculana (Robinson, 1869) - Two-spotted Carolella Moth

Taxonomy
Superfamily: Tortricoidea Family: TortricidaeSubfamily: TortricinaeTribe: CochyliniP3 Number: 620217.00 MONA Number: 3763.00
Identification
Field Guide Descriptions: Online Photographs: MPG, BugGuide, iNaturalist, Google, BAMONA, GBIF, BOLDTechnical Description, Adults: Robinson (1869); (Forbes, 1923)                                                                                 
Adult Markings: In this species the palps are light tan and usually tinged with reddish-brown shading externally. The head, thorax, and ground color of the forewing vary from light tan to yellowish-brown with varying levels of darker dusting throughout. The inner margin has a series of tiny black dots that are equally spaced and the base of the costa is often dusted with brownish-olivaceous scales. The ground is overlain with two bold, posteriorly oblique, reddish-brown marks. The first is a roughly triangular-shaped band that begins in the subcostal area near the middle of the wing and gradually widens as it projects towards the inner margin. It terminates just before reaching the inner margin. The second is a similar and roughly parallel mark on the apical third that begins near the apex and terminates before reaching the sub-tornal region of the inner margin. Both marks are often faintly and irregularly margined with black scales. The fringe is pale with blackish scales at the tip, and the hindwing is medium brown.

Eugnosta bimaculana is similar in size and coloration to E. sartana, but in the latter the median band extends all the way to the inner margin. Both species characteristically rest with the legs raised and the palps angled towards the substrate.
Wingspan: 10-14 mm (Forbes, 1923)
Adult Structural Features: Metzler and Forbes (2012) have illustrations of the male and female genitalia.
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: The larval life history is undocumented.
Distribution in North Carolina
Distribution: Eugnosta bimaculana is restricted to the eastern US where is occurs from Massachusetts southward to southern Florida, and westward to central Texas, central Oklahoma, Missouri, and Illinois. This species is absent from most of the Atlantic Coastal Plain. As of 2023, our records are all from the Piedmont and from one lower elevation site in the Blue Ridge.
County Map: Clicking on a county returns the records for the species in that county.
Flight Dates:
 High Mountains (HM) ≥ 4,000 ft.
 Low Mountains (LM) < 4,000 ft.
 Piedmont (Pd)
 Coastal Plain (CP)

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