The elm spanworm is a serious defoliator of shade and forest trees in the eastern United States. Generally, this native pest feeds on elm, hickory, oak, red and sugar maple, American beech, and ash. This species also attacks a number of other hardwoods.
ento.psu.edu/extension/factsheets/elm-spanworm ento.psu.edu/extension/factsheets/elm-spanworm
Elm Spanworm (PDF File)
ELM SPANWORM. Ennomos subsignaria (Hubner). The elm spanworm is a serious defoliator of shade and ... early June for signs of elm spanworm larvae. If neces- ...
ento.psu.edu/extension/factsheets/pdf/elmspanworm.pdf ento.psu.edu/extension/factsheets/pdf/elmspanworm.pdf
-- The preferred hosts of elm spanworm are red and white oaks and a few other hardwood species, especially hickory, pecan, and related trees. This is a destructive forest pest, particularly in the southern Appalachians, where widespread, severe outbreaks have occured.
www.fs.fed.us/r8/foresthealth/idotis/insects/elmspan.ht... www.fs.fed.us/r8/foresthealth/idotis/insects/elmspan.html
The elm spanworm occurs throughout most of the eastern half of the United States and a ... Generalized geographic distribution of the elm spanworm. ...
www.fs.fed.us/r6/nr/fid/fidls/fidl-81.pdf
Forestry Images: Forest Health, Natural Resources & Silviculture Images ... Join / Sign in ... 1510035 Damage Elm spanworm defoliation USDA Forest Service - Region 8 Archive...
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Image of elm spanworm, Ennomos subsignaria (Lepidoptera: Geometridae); Egg(s);. Picture was taken by Arnold T. Drooz, USDA Forest Service. Photo is available in five resolutions. ... Forestry Images: Forest Health, Natural Resources & Silviculture Images ... Join / Sign in...
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Elm Spanworm, A Frequent Visitor to Eastern Forests cially challenging for culprits known by more than one name! Dutch elm disease and elm phloem necrosis have reduced the occurrence of American elm, once a com-mon eastern shade tree, to a fraction of its former abundance.
www.dec.ny.gov/docs/lands_forests_pdf/espanworm.pdf www.dec.ny.gov/docs/lands_forests_pdf/espanworm.pdf
The elm spanworm is found in most areas of the Eastern United States and adjacent Canada. The caterpillars feed on elm, ash, hickory, and oak but rarely on yellow-poplar. In the past this insect has been serious defoliator of shade trees in large cities;
www.forestpests.org/hardwood/elmspanworm.html www.forestpests.org/hardwood/elmspanworm.html
The elm spanworm, Ennomos subsignarius (Hubner), is one of the inchworms that feed on northern hardwoods. The caterpillars hatch from overwintering eggs at budbreak and feed on foliage until full grown in mid-June. ... Elm Spanworm (About 3 cm. Long)
www.dcnr.state.pa.us/forestry/pests/elm.htm www.dcnr.state.pa.us/forestry/pests/elm.htm
were isolated from the elm spanworm, Ennomos subsignarius (Hiibner) (Lepidoptera: ... Samples of elm spanworm eggs, larvae and pupae were collected ...
www.jstor.org/stable/25009007