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Species Euzophera ostricolorella - Root Collar Borer - Hodges#5997

Root Collar Borer - Euzophera ostricolorella Root Collar Borer - Hodges#5997 - Euzophera ostricolorella Euzophera ostricolorella Root Collar Borer - Euzophera ostricolorella Moth - Euzophera ostricolorella Euzophera ostricolorella Moth to porch light  - Euzophera ostricolorella Euzophera ostricolorella
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 (Euzophera Series)
Genus Euzophera
Species ostricolorella (Root Collar Borer - Hodges#5997)
Hodges Number
Other Common Names
Tuliptree Borer
Synonyms and other taxonomic changes
described in 1890 by Hulst
wingspan 30-41 mm
larva length to 33 mm
Adult: forewing dull purplish-red except dark purplish-gray median area; AM line whitish, gently S-curved; PM line whitish, jagged; no subterminal line; hindwing whitish to pale gray with brown terminal line and white fringe

Larva: body dull white; head dark brown with heavily chitinized black areas; spiracles and anal shield smoky brown; pair of jointed legs on each thoracic segment, and fleshy prolegs ending in numerous hooked spines (crochets) on abdominal segments 3 to 6 and 10; consequently, very mobile within and outside gallery
[adapted from description at]
eastern United States: Arkansas and Louisiana to northern Florida, north to Michigan and New York (approximately the same distribution as Tuliptree, the larval hostplant)
parks and woodlands containing Tuliptree
adults fly from April to June and again from August to October (two broods) in southern states
larvae bore into bark and feed on phloem at base of Tuliptree (Liriodendron tulipifera)
Magnolia reported to be attacked (USDA FS 1985), but this is questionable. (It seems more likely that a related borer in magnolia, E. magnolialis Capps, was mistakenly identified as E. ostricolorella.) []
Life Cycle
Females oviposit at night in bark crevices of hostplant; larvae tunnel into bark to feed; two generations per year in southern states; one generation in northern states
Overwinter in the pupal stage in an tunnel excavated by the larva.(1)
See Also
American Plum Borer (Euzophera semifuneralis) is smaller [wingspan 20-25 mm] and has a diffuse subterminal line with whitish shading in terminal area (compare images of this and related species by Jim Vargo at MPG)
Internet References
detailed species account including common name reference [Root Collar Borer], description, larval foodplant, distribution, biology, control methods (J.D. Solomon, USDA Forest Service. courtesy
common name reference [Tuliptree Borer] plus presence in Florida (John Heppner, Florida State Collection of Arthropods)
distribution list of boundary states (Dalton State College, Georgia)
presence in Michigan; PDF doc list (Mogens Nielsen, Michigan State U., courtesy U. of Michigan)
Works Cited
1.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.