Podosesia aureocincta

Purrington & Nielsen, 1977

Banded Ash Borer Moth, Banded Ash Clearwing

Podosesia aureocincta is a clearwing moth in the Sesiidae that infests ash trees (Fraxinus spp.). Unlike the emerald ash borer, this native pest causes gradual damage over years or decades rather than rapid tree mortality. emerge in late summer, exhibiting of paper wasps with their yellow-banded and clear wings. Larvae tunnel beneath bark, producing sawdust-like and round exit holes distinct from the D-shaped holes of emerald ash borer. The is distributed across the Nearctic region.

Pronunciation

How to pronounce Podosesia aureocincta: //pɒdɵˈsiːzɪə ɔːr.i.oʊˈsɪŋk.tə//

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Identification

have clear, scaleless wings and a yellow band across the , resembling paper wasps (Vespidae). Larvae produce round to oval exit holes in bark, contrasting with the characteristic D-shaped exit holes of emerald ash borer (Agrilus planipennis). Sawdust-like accumulates near galleries and on the ground beneath infested trees. Papery brown pupal cases often protrude from exit holes after adult .

Habitat

Associated with ash trees (Fraxinus spp.), particularly those under stress from urban conditions such as street plantings, parking lot islands, or compacted soils.

Distribution

Nearctic region.

Seasonality

emerge in late summer to early autumn (August-September in temperate North America). hatch within days; larvae feed through autumn, winter, and the following spring and summer before pupating.

Diet

Larvae feed on phloem and cambium tissues beneath the bark of ash trees.

Host Associations

  • Fraxinus - primary ash trees
  • Fraxinus americana -
  • Fraxinus pennsylvanica -

Life Cycle

deposited on bark hatch within days. Larvae tunnel beneath bark and feed on living tissues through autumn, overwinter, and continue development the following spring and summer. Mature larvae pupate in galleries; emerge through round or oval exit holes, leaving papery pupal cases protruding from bark.

Behavior

females release to attract males. The exhibits of stinging paper wasps, likely deterring .

Ecological Role

Native wood-boring insect that contributes to ash tree decline under stress conditions. Serves as prey for birds and other despite -mimicry defense.

Human Relevance

Secondary pest of landscape and urban ash trees; management focuses on reducing tree stress through proper mulching, watering, and root space. Distinguishing this native from the emerald ash borer is critical for appropriate management responses.

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