Moths of North Carolina
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View PDFLimacodidae Members: 63 NC Records

Isa textula (Herrich-Schäffer, 1854) - Crowned Slug Moth


Taxonomy
Superfamily: Zygaenoidea Family: LimacodidaeP3 Number: 660039.00 MONA Number: 4681.00
Comments: One of only two representatives of this genus in North America and the only one to occur in the East.
Identification
Field Guide Descriptions: Covell (1984); Beadle and Leckie (2012)Online Photographs: MPG, BugGuide, BAMONATechnical Description, Adults: Forbes (1923)Technical Description, Immature Stages: Wagner (2005)                                                                                 
Adult Markings: The length from tip of head to apex of forewing at rest averages 10.5 mm (n = 8). The pale orange to ochre brown forewings show subtle, textured bands of silvery gray scaling, giving the forewings a unique, velvety appearance. The forewings are otherwise unmarked.
Wingspan: 20 mm (Forbes, 1923)
Adult Structural Features: Male antennae are broadly pectinate to the apex; palps are truncate and only reach the middle of the front; hind tibiae have only a single pair of spurs (Forbes, 1923).
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: Larvae have a flattened pale green body with lobes bearing numerous stinging spines protruding outward from the perimeter. The mid-dorsum often marked with red or yellow, especially over segments toward the rear of the body (Wagner, 2005).
Larvae ID Requirements: Identifiable from good quality photos, especially where associated with known host plants.
Distribution in North Carolina
Distribution: Probably occurs statewide, from the Barrier Islands to the High Mountains, but with records missing from large areas
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: Flies mainly in June and July in the Piedmont, emerging earlier in the Coastal Plain; stragglers seen as late as October
Habitats and Life History
Habitats: Our records all come from stands of hardwood forests, but spanning the moisture regime and drawn from both acidic and circumneutral habitat types: maritime forests, sandhills, brownwater river bottomlands, lakeshores, and high elevation red oak forests.
Larval Host Plants: Polyphagous, feeding upon a variety of trees and shrubs. Wagner (2005) states that Oaks are commonly used, but also Basswood, Beech, Hickory, and Maples.
Observation Methods: Comes well to lights but like other Limacodids does not appear to come to bait or to visit flowers.
Wikipedia
See also Habitat Account for General Hardwood Forests
Status in North Carolina
Natural Heritage Program Status:
Natural Heritage Program Ranks: G5 [S5]
State Protection: Has no legal protection, although permits are required to collect it in state parks and on other public lands.
Comments: Common statewide though not typically seen in any numbers. Occupies a wide range of habitat types and host plants, many of which are common. Appears to be secure within the state.

 Photo Gallery for Isa textula - Crowned Slug Moth

37 photos are available. Only the most recent 30 are shown.

Recorded by: Mark Shields on 2021-05-17
Onslow Co.
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Recorded by: Vin Stanton on 2020-08-09
Buncombe Co.
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Recorded by: Gary Maness on 2020-08-01
Guilford Co.
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Recorded by: Gary Maness on 2020-07-23
Guilford Co.
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Recorded by: Steve Hall on 2020-07-22
Orange Co.
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Recorded by: Mark Shields on 2020-05-01
Onslow Co.
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Recorded by: Gary Maness on 2019-11-07
Guilford Co.
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Recorded by: Gary Maness on 2019-08-06
Guilford Co.
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Recorded by: L. M. Carlson on 2019-07-27
Orange Co.
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Recorded by: Gary Maness on 2019-07-21
Guilford Co.
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Recorded by: Gary Maness on 2019-07-13
Guilford Co.
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Recorded by: Gary Maness on 2019-07-13
Guilford Co.
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Recorded by: David L. Heavner on 2019-06-28
Buncombe Co.
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Recorded by: David L. Heavner on 2019-06-28
Buncombe Co.
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Recorded by: David L. Heavner on 2019-06-28
Buncombe Co.
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Recorded by: Jim Petranka and Becky Elkin on 2019-06-25
Madison Co.
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Recorded by: Jim Petranka and Becky Elkin on 2019-06-25
Madison Co.
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Recorded by: A. Early on 2018-12-01
Stanly Co.
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Recorded by: Jim Petranka and Becky Elkin on 2018-07-13
Madison Co.
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Recorded by: K. Bischof on 2017-07-25
McDowell Co.
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Recorded by: K. Bischof on 2017-07-17
McDowell Co.
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Recorded by: Lenny Lampel on 2016-08-04
Mecklenburg Co.
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Recorded by: T. DeSantis on 2015-08-03
Durham Co.
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Recorded by: B. Bockhahn, P. Scharf, S. Hall on 2015-07-22
Stanly Co.
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Recorded by: Britta Muiznieks on 2014-05-20
Dare Co.
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Recorded by: Britta Muiznieks on 2014-05-09
Dare Co.
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Recorded by: Britta Muiznieks on 2014-05-08
Dare Co.
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Recorded by: Darryl Willis on 2013-07-13
Cabarrus Co.
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Recorded by: C. Bowers, NEW on 2011-10-20
Moore Co.
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Recorded by: Jim Petranka and Becky Elkin on 2011-10-02
Madison Co.
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