Saperda inornata

Say, 1824

Poplar-gall Saperda

Saperda inornata is a longhorned beetle (Cerambycidae) native to North America, closely associated with trembling aspen (Populus tremuloides) throughout its . Larvae develop within living aspen trees, tunneling through wood and inner bark, while feed on bark and other tree tissues. The was described by Thomas Say in 1824 and occurs across Canada and the United States. It has been observed in Manitoba, New Brunswick, Nova Scotia, and Ontario in Canada, as well as the northern United States.

Bulletin - New York State Museum (1904) (20415959556) by New York State Museum; New York State Museum. Used under a No restrictions license.Annual report (1903) (18243542929) by Internet Archive Book Images. Used under a No restrictions license.Annual report (1903) (17807067024) by Internet Archive Book Images. Used under a No restrictions license.

Pronunciation

How to pronounce Saperda inornata: /səˈpɛrdə ɪˈnɔrnətə/

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Habitat

Stands of trembling aspen (Populus tremuloides); larvae inhabit stems of aspen root suckers and twigs of larger trees, with gallery construction concentrated in tree crowns

Distribution

Canada (Manitoba, New Brunswick, Nova Scotia, Ontario) and the United States; specifically documented in Upper Michigan and northern Wisconsin

Diet

Larvae feed on wood and inner bark of trembling aspen; feed on bark and possibly other tree tissues

Host Associations

  • Populus tremuloides - primary trembling aspen; required for larval development and feeding

Life Cycle

One- to two-year , duration apparently dependent on timing of deposition; larvae complete development within living trees, tunneling in wood and inner bark before emerging as

Behavior

Larval tunneling in living aspen wood and inner bark; gallery construction in tree crowns; inter- and intra-specific competition with other wood-boring cerambycids such as Oberea schaumii has been documented

Ecological Role

Wood-boring insect affecting trembling aspen; contributes to tree damage and potentially influences forest health dynamics in aspen stands

Similar Taxa

  • Saperda lateraliscongeneric longhorned beetle with similar ; attacks stressed hardwoods including maples, hickories, elms, basswoods, and oaks
  • Saperda candidacongeneric known as the roundheaded apple tree borer; major pest of trees in the rose
  • Oberea schaumiisympatric cerambycid that shares trembling aspen as a and exhibits inter-specific competition for crown gallery space

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Sources and further reading