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Pitch Moths in Utah What Is Making These Pitch Masses on Pines? Pitch Moths in Utah the Moth People Want to Blame

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Pitch Moths in Utah What Is Making These Pitch Masses on Pines? Pitch Moths in Utah the Moth People Want to Blame Pitch Moths in Utah What is making these pitch masses on pines? Pitch Moths in Utah The Moth People Want to Blame Zimmerman Pine Moth: Dioryctria zimmermani Pitch Moths in Utah Known Zimmerman Pine Moth Distribution Austrian Scotch Pondo Zimmerman Pine Moth Pitch Moths in Utah Other Pitch Makers: Pyralidae Pitch Nodule Moths Pinyon Pitch Mass Pinyon Tip Moth Retiniaspp. Dioryctria ponderosae Dioryctria albovittella Pinyon; ponderosa Ponderosa; pinyon; pinus Pinyon Pitch Moths in Utah Bark Beetles Ips Dendroctonus Pitch Moths in Utah Bark Beetles Canopy Exit Galleries Frass fading holes Pitch Moths in Utah Bark Beetles Disease/Abiotic? Pitch Moths in Utah So…What is it? Pitch Moths in Utah Only 3 Clearwing species attack Pinaceae in NA Pitch Moth Distribution Pitch Mass Borer Doug-Fir Pitch Moth Sequoia Pitch Moth Pitch Moths in Utah Pitch Mass Borer Synanthedon pini Hosts: Eastern white pine*; white spruce; jack pine; scotch pine Pitch Moths in Utah Douglas-Fir Pitch Moth Synanthedon novaroensis Hosts: Lodgepole pine; Douglas-Fir; Picea spp.; Pinus spp. Pitch Moths in Utah Sequoia Pitch Moth Synanthedon sequoiae Hosts: Pinus spp.; Picea spp.; Douglas-Fir Pitch Moths in Utah LarVal and Adult Collections Taken April 22, 2015 Pitch Moths in Utah LarVal Habits Gallery: Vertical and lateral; up to 5” Pitch Moths in Utah Pitch Moths in Utah Identification of Adult Moths Pitch Moths in Utah Identification of Adult Moths Pitch Moths in Utah Identification of Adult Moths S. novaroensis = S. sequoiae Pitch Moths in Utah Process of Elimination Sequoia Pitch Moth Doug-Fir Pitch Moth Pitch Mass Borer Likely our moth unless Not morphologically Not morphologically another undescribed species similar similar exists here PCR not a match Distribution eastern Pitch Moths in Utah Sequoia Pitch Moth Life Cycle LarVa: Always Present Pupae Egg Adult Flight • 1-2 Yr. life cycle • offset, oVerlapping generations Pitch Moths in Utah Sequoia Pitch Moth Biological Points • LarVae feed in cambium and sap/heartwood (primarily in spruces) • Young larVae usually in gallery; older in resin mass • LarVal feeding produces copious resin • LarVal feeding usually aesthetic; serious damage/death may occur • Adult females attracted to freshly pruned/damaged trees • Abandoned galleries are attractiVe to graVid females • Daytime flyers Pitch Moths in Utah Sequoia Pitch Moth Non-Chemical Control • Avoid pruning February – September • Avoid any mechanical injury to trees using buffer zones (mowers, weed-whippers, tree staking materials, etc.) • Select more resistant pines (they seem to faVor Austrian and scotch pine in UT) • Proper irrigation • Peeling pitch masses with larVae Pitch Moths in Utah Sequoia Pitch Moth Chemical Control • All fact sheets suggest that there are no recommended insecticides for this insect. • Systemic neonicitinoids ineffective against clearwings. • CoVer sprays ineffectiVe: Carbaryl, Bifenthrin, Permethrin • Does Emamectin Benzoate work? Boxer; TreeAge • John Brown, WA. Study suggests that it does work. Clearwing Moths in Utah There are Others… Lilac-Ash Borer Peachtree Borer Sycamore Borer Western Poplar Clearwing Raspberry Crown Borer Common Pests of Schools and Structures in Utah https://utahpests.usu.edu/schoolIPM/htm/pest-id-guide/ Ryan Davis [email protected] 435-797-2435 utahpests.usu.edu.
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