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Species Proteoteras aesculana - Maple Twig Borer Moth - Hodges#3230

Maple Twig Borer Moth - Proteoteras aesculana  Maple Twig Borer Moth - Proteoteras aesculana Tortricidae: Proteoteras aesculana? - Proteoteras aesculana Tortricidae: Proteoteras aesculana? - Proteoteras aesculana Maple Twig Borer - Proteoteras aesculana Proteoteras aesculana Proteoteras aesculana Gray and black bug - Proteoteras aesculana
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Tortricoidea (Tortricid Moths)
Family Tortricidae (Tortricid Moths)
Subfamily Olethreutinae
Tribe Eucosmini
Genus Proteoteras
Species aesculana (Maple Twig Borer Moth - Hodges#3230)
Hodges Number
Other Common Names
Maple Tip Moth (adult)
Maple Twig Borer (larva)
Synonyms and other taxonomic changes
Proteoteras aesculana (Riley, 1881)
Explanation of Names
Early Proteoteras: adults appear in April and May, at least a month earlier than the flight of other Proteoteras species
wingspan 15-17 mm, based on several Internet photos
larva length to 10 mm
Adult: forewing mottled brown or gray and yellowish (often with greenish tint in fresh specimens); irregular blackish crescent-shaped marking begins mid-way along costa and either breaks in subterminal area or terminates in a dark blob before reaching apex; hindwing pale gray with dark veins

Larva: body pale white to gray; head dark brown or yellowish-brown; thoracic shield yellowish-brown, often darker laterally and posteriorly; spinules on integument moderately dense and dark
Nova Scotia to British Columbia and all of United States
deciduous woods containing maple; adults are nocturnal and come to light
adults fly from April and May in the east, with subsequent broods reported throughout summer and into October in Maryland; into July or even later in the west
larvae present in spring soon after leaf-out in the west
larvae bore in new twigs, petioles, and seeds of various maple species (Acer) and sometimes Buckeye and Horsechestnut
Life Cycle
In the east, some sources say one generation per year, but Bob Patterson notes three in Maryland. In the west, presumably two.
See Also
Black-cresecent Proteoteras (P. crescentana) forewing is paler, and crescent-shaped marking is continuous to apex
Gray-flanked Proteoteras (P. moffatiana) forewing is more extensively green, and the moth flies later in the season (mostly June to August)
Other species of Proteoteras also fly later (June and July) than aesculana
Internet References
Moth Photographers Group - species page with photos of live and pinned adults.
BOLD - Barcode of Life Data Systems - species account with photograph of pinned adult and DNA sequence.
pinned adult image by Jim Vargo, plus date (Dalton State College, Georgia)
live larva images and illustrations of damage, plus common name references, flight season in the west, larval seasonality and foodplants (Oregon State U.)
species account including foodplants, distribution, description of adult and larva, biology, and photo of damage (J.D. Solomon, courtesy
flight season chart (U. of Alberta)
common name reference [Maple Twig Borer; larva] (Entomological Society of Canada)
comparison to Codling Moth (Wisconsin Dept. of Agriculture)
presence in British Columbia; PDF doc citing larval damage to seeds (Govt. of British Columbia)
presence in Florida; list (John Heppner, Florida State Collection of Arthropods)
presence in Texas; list (James Gillaspy, U. of Texas)
presence in California 9 specimen records plus locations and dates (U. of California at Berkeley)