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University of Tennessee Biological Field Station
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Species Atteva punctella - Ailanthus Webworm Moth - Hodges#2401

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Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
No Taxon (Moths)
Superfamily Yponomeutoidea
Family Yponomeutidae (Ermine Moths)
Subfamily Attevinae (Tropical Ermine Moths)
Genus Atteva
Species punctella (Ailanthus Webworm Moth - Hodges#2401)
Hodges Number
2401
Synonyms and other taxonomic changes
9 synonyms listed at All-Leps but none more recent than 1912
described in 1781 by Cramer, who originally placed it in genus Phalaena
Size
wingspan 18-30 mm
Identification
Adult: forewing orange with several large black and white rosettes with some variability which has led to many different names (2). Covell notes that the Florida population has smaller spots and was previously considered a separate species (Atteva floridana)(1). Hindwing translucent black.
Habitat
Larvae are found in webs in Ailanthus (2). I've photographed adults nectaring at various flowers in meadows and they are frequently attracted to lights.
Remarks
The main larval food plant (Ailanthus altissima) is also known as Tree of Heaven, Stinking Sumac, Copal Tree, or Varnish Tree, and occurs throughout most of United States and southern Canada, often planted as an ornamental in urban areas.
Print References
Arnett, page 677, with a black and white photograph (figure 27.48) (2)
Audubon Guide to NA Insects, #552, page 709 (3)
Internet References
live adult images plus description, larval foodplant, flight dates (Lynn Scott, Ontario)
pinned adult image (Clemson U., South Carolina)
classification of Atteva in family Yponomeutidae (Butterflies and Moths of the World)