Image Number: 1150126

The elm sawfly is not considered a problem in forest situations, but can be a defoliator of shade and ornamental elm and willow trees. The elm sawfly is the largest North American sawfly with larvae reaching a length of almost two inches. The larvae pictured here were found feeding on an American elm tree in Bastrop, Texas (near Austin, TX) on May 2, 2002. Larvae are a yellowish-white color and possess a black dorsal stripe. While feeding, the larvae usually coil their posterior around a leaf or twig. At rest the larvae roll into a characteristic tight coil. The larvae spin tough, papery cocoons in the litter or just below the surface of the soil.
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Image location:
United States


Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Atelocerata
Class: Hexapoda (including Insecta)
Infraclass: Neoptera
Subclass: Pterygota
Order: Hymenoptera
Superfamily: Tenthredinoidea
Family: Cimbicidae
Subfamily: Cimbicinae
Tribe: Cimbicini
Genus: Cimbex
Subject: Cimbex americana Leach
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Image uploaded:
Wednesday, August 7, 2002
Image last updated:
Thursday, August 8, 2002