WebPikonema alaskensis is a species of insects with 0 observations WebPikonema alaskensis Order Hymenoptera, Family Tenthredinidae; common sawflies Native pest Host plants: White, black, and blue spruce Description: Adult sawflies are wasp-like, small, (8–10 mm) and reddish brown. Mature larvae are approxi-mately 18 mm long and have a yellow to reddish-brown head with an olive green body. There are six gray-green
ADW: Pikonema alaskensis: CLASSIFICATION
WebOther native species in North America that frequently plague conifer plantations are the red-headed pine sawfly, Neodiprion lecontei, and the yellow-headed spruce sawfly, Pikonema alaskensis. The European woodwasp, Sirex noctilio , along with a symbiotic fungus, has been a substantial problem in the Southern Hemisphere where it was introduced ... manzell glover
FPNA/Pikonema alaskensis - Bugwoodwiki
WebMar 15, 2013 · Six years of field experiments were carried out to establish relationships between the density of larval yellowheaded spruce sawfly, Pikonema alaskensis (Roh.) (Hymenoptera: Tenthredinidae), and current-year shoot growth and production in juvenile, open-grown black spruce, Picea mariana [Mill.] B.S.P. WebContact Information Northern Research Station One Gifford Pinchot Drive Madison, WI 53726 (608) 231-9318 (608) 231-9544 TTY/TD. Contact Us WebAll stages are described. The larvae were only observed infesting Picea canadensis, of which the new growth was devoured. The adults appeared between 28th May and 8th June, and oviposited in 1 or 2 days. The number of eggs in the ovaries of 17 females varied from 23 to 69. PDF emailed within 1 workday: $29.90 Credit Card PayPal Related References crollo montagna in cina