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Life cycle, descriptions and distribution of tusam sawfly in North Sumatra

, : Life cycle, descriptions and distribution of tusam sawfly in North Sumatra. Laporan, Balai Penelitian Hutan, Indonesia (368): iv + 27

This sawfly was first observed in 1956. Sporadic outbreaks have been reported since on tusam (Pinus merkusii) 6 months to 7 yr old, never causing mortality, and once on P. oocarpa. Descriptions of all stages showed it to be closely related to Neodiprion biremis (found in Thailand), although differing in several respects. The distribution is limited to Sumatra above 650 m alt. at lat. 1-3 degrees N. The life cycle was 56-76 days.

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