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Minnesota First Detectors Wood wasps / Horntails 1 to 1.5 inches long Horn tail and lack narrow waist 23 species in US and Canada 2 on hardwood, 21 on.

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Presentation on theme: "Minnesota First Detectors Wood wasps / Horntails 1 to 1.5 inches long Horn tail and lack narrow waist 23 species in US and Canada 2 on hardwood, 21 on."— Presentation transcript:

1 Minnesota First Detectors Wood wasps / Horntails 1 to 1.5 inches long Horn tail and lack narrow waist 23 species in US and Canada 2 on hardwood, 21 on softwood 19 native, 4 exotic Schiff et al D. Lance, USDA APHIS PPQ, Bugwood.org

2 Minnesota First Detectors Which Insect is a Wood Wasp? A. Insect A B. Insect B C. Insect C N. Wright, FDACS, Bugwood.org F. & K. Starr, U.S. GS, Bugwood.org G. Alpert, Harvard Univ., Bugwood.org BAC D. Lance, USDA APHIS PPQ, Bugwood.org

3 Minnesota First Detectors The Sirex Woodwasp The Female The Male K. E. Zylstra 1 to 1.5 inches long Dark metallic blue-black body Legs reddish-yellow, feet black Antennae entirely black Similar to females, but… Middle portion of abdomen orange Hind legs black K. E. Zylstra D. Lance, USDA APHIS PPQ, Bugwood.org

4 Minnesota First Detectors K. E. Zylstra

5 Minnesota First Detectors Which Insect is a Sirex Wood Wasp? A. Insect A B. Insect B C. Insect C F. & K. Starr, U.S. GS, Bugwood.org G. Alpert, Harvard Univ., Bugwood.org B A D. Lance, USDA APHIS PPQ, Bugwood.org C N.Wright, FDACS, Bugwood.org PDIL, Bugwood.org

6 Minnesota First Detectors K. E. Zylstra The Larva Creamy white Legless Dark spine at tip of abdomen

7 Minnesota First Detectors Siricids are commonly referred to as horntails because of their cornus on the posterior end Currently, there is no morphological key for siricid larvae and a molecular key is being developed by the USFS. K. E. Zylstra D. Lance, USDA APHIS PPQ, Bugwood.org

8 Minnesota First Detectors Which Larva is a Wood Wasp? A. Insect A B. Insect B C. Insect C BA D. Lance, USDA APHIS PPQ, Bugwood.org C S. Kinelski,, Bugwood.org H. Pase III, Texas F.S., Bugwood.org D. Cappaert, MI State Univ., Bugwood.org

9 Minnesota First Detectors K. E. Zylstra Finely packed frass in the tunnel K. E. Zylstra When you cut through the tree sometimes you can see where you cut through a gallery D. Lance, USDA APHIS PPQ, Bugwood.org

10 Minnesota First Detectors Larval Galleries K. E. Zylstra

11 Minnesota First Detectors K. E. Zylstra Larval galleries

12 Minnesota First Detectors Adult male chewing his way out… K. E. Zylstra D. Lance, USDA APHIS PPQ, Bugwood.org

13 Minnesota First Detectors Symptoms of Attack Resin beads Browning/thinning crown Woodpecker damage Exit holes ***The Sirex wood wasp can attack living trees, while native wood wasps attack dead or dying trees*** D. Lance, USDA APHIS PPQ, Bugwood.org

14 Minnesota First Detectors Resin Beads Look Different On Different Pine Species… Red Pine Scots Pine White Pine Resin beads K. E. Zylstra D. Lance, USDA APHIS PPQ, Bugwood.org

15 Minnesota First Detectors Infested Scots Pine K. E. Zylstra D. Lance, USDA APHIS PPQ, Bugwood.org

16 Minnesota First Detectors Infested Red Pine K. E. Zylstra D. Lance, USDA APHIS PPQ, Bugwood.org

17 Minnesota First Detectors Infested White Pine K. E. Zylstra D. Lance, USDA APHIS PPQ, Bugwood.org

18 Minnesota First Detectors K. E. Zylstra Exit Holes Perfectly circular, size ranging from 1/8 to 3/8 inch diameter K. E. Zylstra

19 Minnesota First Detectors K. E. Zylstra

20 Minnesota First Detectors Which Damage is from a Wood Wasp? A. Damage A B. Damage B C. Damage C BA D. Lance, USDA APHIS PPQ, Bugwood.org C D. Haugen, U.S. F.S., Bugwood.org R.. Billings, TX F.S., Bugwood.org J. Hodge, Univ. of Kentucky, Bugwood.org

21 Minnesota First Detectors K. E. Zylstra


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