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Species Acrobasis angusella - Hickory Leafstem Borer - Hodges#5673

Moth 33 - Acrobasis angusella Pennsylvania Moth - Acrobasis angusella pyralid 1 - Acrobasis angusella Pyralidae, Hickory Leafstem Borer - Acrobasis angusella Moth with silver band - Acrobasis angusella Pennsylvania Moth - Acrobasis angusella Moth - Acrobasis angusella Acrobasis - Acrobasis angusella
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Pyraloidea (Pyralid and Crambid Snout Moths)
Family Pyralidae (Pyralid Moths)
Subfamily Phycitinae
Tribe Phycitini
No Taxon (Acrobasis Group)
Genus Acrobasis
Species angusella (Hickory Leafstem Borer - Hodges#5673)
Hodges Number
Other Common Names
Leafstem Borer
(the word Hickory was added to the common name above because larvae feed on hickory species)
Synonyms and other taxonomic changes
Acrobasis angusella Grote, 1880
* phylogenetic sequence #168425
wingspan about 18 mm (1)
Larvae mature at 14.9-16.5 mm(2)
Adults - top of head pale yellow or whitish, contrasting sharply with dark reddish thorax; forewing basal and subterminal areas dark reddish; broad black band with raised scales crosses wing in basal area, dividing dark reddish portion in two; AM line black at costa, becoming pale yellow half-way to inner margin; medial area medium gray with pale gray or whitish triangular area touching costa and containing two dark discal spots; PM line with deep scallop at costa and midline, and 4 sharp zigzag points in middle; terminal line consists of several dark dots. hindwing unmarked, grayish-brown with pale fringe
Larvae - Head reddish brown with brown to dark-brown indistinct maculation. Dorsum of body purplish brown with indistinct greenish or pink undertones; venter slightly paler than dorsumbody smooth, dark gray with grayish-brown band on each abdominal segment; head black(2)
northeastern United States and southeastern Canada (1)
one disjunct record from Texas, by Edward Knudson in Big Thicket NP on 26 May 1996 (found by searching Lepidopterists Society Season Summary)
deciduous woodlands containing hickory trees; adults attracted to light
adults fly from May to September (1)
larvae bore in leaf stems of hickory (Carya spp.) causing the leaves to fall off (1)
See Also
A. juglandis (Pecan Leaf Casebearer) is similar, but has less red shading in basal and subterminal areas of forewing, and color of top of head doesn't contrast sharply with color of thorax (see live adult images: 1, 2)
Also see live and pinned images of other Acrobasis species in links listed below
Internet References
Moth Photographers Group – images of live and pinned adults (3)
BOLD Systems - images of DNA supported specimens (4)
Wikipedia - brief description (1)