Neodiprion sertifer

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Neodiprion sertifer larvae on Pinus mugo (click on image to enlarge it)
Author(s): Steven Katovich, USDA Forest Service
Source: IPM Images

Neodiprion sertifer (Geoffroy) - (European pine sawfly)

The sawfly is a pest of pine trees and can cause serious defoliation. It is native to Europe but has been accidentally introduced into eastern North America in 1925.

The female lays its eggs inside the pine needles in autumn. The eggs hatch in spring and the larvae feed on the older pine needles. Serious damage can reduce the growth of the trees and can even cause tree death. The larvae grow to a length of around 2 cm and pupate in the summer, adults emerge in autumn.

The larvae are grey-green with a shiny black head and five longitudinal stripes. The adults are 6-12 mm long. Males are black with 25-30 antennal segments. Females are brownish with 20-28 antennal segments.

Vernacular names
• Deutsch: Rotgelbe Kiefernbuschhornblattwespe
• English: European pine sawfly
fox-coloured sawfly
• Español: lofiro rojizo
• Français: lophyre roux
diprion du pin sylvestre

Synonyms:
Neodiprion rufus
Diprion sertifer