& web-spinning sawflies
Orussidae-parasitic wood wasps
|Ref. research.amnh.org 2004-01-15|
The larvae look like caterpillars (the larvae of moths and butterflies). Adult sawflies, except for those in the Cephidae family, have structures on the underside of the forewings that help hold the wings in place when the insect is at rest. These cenchri, which are absent in member of the suborder Apocrita, are located behind the scutellum on the thorax.
Sawfly larvae are herbivorous, the group feeding on a wide range of plants. Individual species, however, are quite specific in their choice of plants used for food. The larvae of various species exhibit leaf-mining, leaf rolling or gall formation. Large populations can cause economic damage in cultivated areas and forests. Adults are carnivorous, eating other insects, but many also feed on nectar.