Moths of North Carolina
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View PDFCossidae Members: 15 NC Records

Givira anna (Dyar, 1898) - Anna Carpenterworm Moth


Taxonomy
Superfamily: Cossoidea Family: CossidaeSubfamily: HypoptinaeTribe: [Hypoptini]P3 Number: 640016.00 MONA Number: 2668.00
Comments: One of at least 14 species of this predominantly western genus to occur in North America, only two of which occur in North Carolina.
Identification
Field Guide Descriptions: Covell (1984)Online Photographs: MPG, BugGuide, BOLDTechnical Description, Adults: Barnes and McDunnough (1911); Forbes (1923)                                                                                 
Adult Markings: A rather nondescript moth with a triangular thoracic hump and furry legs that it holds out from the body at rest. The finely speckled forewings are light or medium brown to gray, typically with diffuse brown shading from about the mid-inner margin to the sub-apical costa, though this shading can be more extensive. In fresh condition G. anna typically shows faint brown barring in the subterminal area and even brown spotting along costa. Most distinctive are a white comma-shaped mark at the end of the discal cell, and, typically, obviously pale median and cubital veins. Length from tip of head to apex of forewing at rest averages 15 mm (n=3). Very similar in shape and size to G. francesca but differentiated from that species by the lack of black on the forewings.
Wingspan: 25-30 mm (Forbes, 1923)
Adult Structural Features: Male antennae are pectinate to the tip (Forbes, 1923)
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: Apparently undescribed
Distribution in North Carolina
Distribution: All of our records come from a narrow zone along the Fall Line
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: North Carolina records come from May to August, with the possibility that there are two distinct flights
Habitats and Life History
Habitats: Records from the Fall-line Sandhills come from seepage slopes where Pond Pine is present along with Longleaf Pine. Piedmont records come from areas where Loblolly, Short-leaf, and Virginia Pines all may be present.
Larval Host Plants: A pine borer (Covell, 2005).
Observation Methods: Attracted to lights but since the mouthparts of the adults are rudimentary, they do not feed and consequently do not come to bait or visit flowers.
Wikipedia
Status in North Carolina
Natural Heritage Program Status:
Natural Heritage Program Ranks: G4 [SU]
State Protection: Has no legal protection, although permits are required to collect it in state parks and on other public lands.
Comments: Likely uncommon in the Coastal Plain and Piedmont. However, limited but consistent sampling in these regions over many years has resulted in relatively few records. Its status in the mountain region not known.

 Photo Gallery for Givira anna - Anna Carpenterworm Moth

Photos: 11

Recorded by: Dean Furbish on 2021-08-02
Wake Co.
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Recorded by: Dean Furbish on 2021-08-02
Wake Co.
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Recorded by: Dean Furbish on 2021-07-12
Wake Co.
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Recorded by: Dean Furbish on 2021-07-12
Wake Co.
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Recorded by: Steve Hall on 2019-05-27
Orange Co.
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Recorded by: Stephen Hall on 2017-05-27
Orange Co.
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Recorded by: Darryl Willis on 2016-06-01
Cabarrus Co.
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Recorded by: Parker Backstrom on 2013-06-09
Chatham Co.
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Recorded by: Parker Backstrom on 2013-06-09
Chatham Co.
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Recorded by: Paul Scharf on 2012-05-17
Warren Co.
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Recorded by: ASH on 2008-06-02
Moore Co.
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