Moths of North Carolina
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17 NC Records

Eucosma baggetti Wright & Gilligan, 2019 - No Common Name

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Superfamily: Tortricoidea Family: TortricidaeSubfamily: OlethreutinaeTribe: EucosminiP3 Number: 620880.10 MONA Number: 3110.10
Field Guide Descriptions: Online Photographs: MPG, BugGuide, iNaturalist, Google, BAMONA, GBIF, BOLD                                                                                 
Adult Markings: The following is based on the description by Wright and Gilligan (2019). The frons is whitish and the vertex, palps, antennae and thorax are pale brown. The ground of the forewing is pale brown with darker brown fasciate markings that are weakly expressed. A dark line is present on the cubitus from the wing base to the mid-wing. The basal fascia is represented by a barely discernible line from the inner margin to the costa, while the subbasal fascia is reduced to an obscure band from the inner margin to the discal cell. The median fascia is represented by a rectangular mark on the costa, and there is a small but conspicuous pretornal mark, along with an obscure band joining them. The interfascial area between the subbasal and median fascia is bisected by thin line from the inner margin to the costa. The costal strigulae are pale brown and defined by darker brown marks and striae. The ocelloid region is mostly concolorous with the interfascial areas, and has grayish bars on the lateral margins and a few black spots on the central field. The termen has a whitish line from the tornus to the apex and is basally edged with a black line in the apical area. The fringe is brown, and the hindwing pale gray brown with a slightly darker line along the distal and posterior margins.

Eucosma baggetti is similar to E. gomonana. It differs in that the dominant forewing color is pale brown rather than gray, and the maculation is much less strongly expressed. These two species can also be separated based on genitalia.
Wingspan: 4.7-5.9 mm; mean = 5.4 mm (Wright and Gilligan, 2019)
Adult Structural Features: Wright and Gilligan (2019) have illustrations of the male and female genitalia. The following description is from their work. In males, the dorsolateral shoulders of the tegumen is clearly defined and the uncus is triangular and weakly developed, with the basal width about four times the height. The socius is densely setose and attenuates distally to a narrowly rounded apex. The phallus is stout, with the base closely surrounded by the anellus. The vesica has 17–18 deciduous cornuti. The valva has a weakly concave costal margin, a neck that is short and narrow, and an angulate saccular corner. The cucullus has dorsal and ventral lobes that are strongly developed. The apex and anal angle are broadly rounded and the distal margin is weakly convex. The setae on the medial surface of the cucullus are short and stout in a band along the ventral two-thirds of the distal margin, but hairlike otherwise.

In females, the papillae anales are laterally facing, sparsely setose, and microtrichiate. The length of the apophyses posteriores is nearly 2 times that of the apophyses anteriores. The sterigma is U-shaped, with a band-like lamella antevaginalis laterally enclosing a microtrichiate lamella postvaginalis. The posterior margin of sternum 7 is indented to the full length of the sterigma and joined to the anterior and lateral margins of the sterigma by a narrow band of sclerotized membrane. The scaling of sternum 7 is dense in a band along the posterior margin, and moderately sparse elsewhere. The ductus bursae has a sclerotized ring at the juncture with the ductus seminalis, and the corpus bursae has two signa, with one larger than the other.
Structural photos
Immatures and Development: The larval life history is undocumented.
Distribution in North Carolina
Distribution: The known range extends from mid-Florida north along the Atlantic coast to North Carolina and Rhode Island, and west along the Gulf Coast to Mississippi (Wright and Gilligan, 2019).
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)

Click on graph to enlarge
Flight Comments: Wright and Gilligan (2019) reported capture dates that range from 9 January to 22 May. As of 2022, our records extend from mid-March to late-April.
Habitats and Life History
Habitats: Most of our records are from longleaf pine sandhill communities and pine savanna habitats.
Larval Host Plants: The hosts plants are undocumented.
Observation Methods: The adults are attracted to lights.
Status in North Carolina
Natural Heritage Program Status:
Natural Heritage Program Ranks: GNR [S2-S4]
State Protection:
Comments: We currently do not have sufficient information on host use, habitat requirements, and abundance to accurately assess the conservation status of this species within the state.

 Photo Gallery for Eucosma baggetti - No common name

Photos: 5

Recorded by: Mark Shields on 2021-04-07
Onslow Co.
Recorded by: Mark Shields on 2020-03-30
Onslow Co.
Recorded by: Mark Shields on 2020-03-23
Onslow Co.
Recorded by: Darryl Willis on 2018-04-11
Cabarrus Co.
Recorded by: Darryl Willis on 2015-03-31
Cabarrus Co.