[MAIPC] FW: Ailanthus and Spotted Lantern Fly two for the price of one

Thu Feb 1 18:59:09 PST 2018

I would defer to others who have made some attempt at systematic direct observations. My best guess would be that it would be safe to refer to Ailanthus as a preferred host. It’s possible that it’s a required host, but again, the data to support that haven’t been presented as far as I am aware.

Norris
Associate Professor of Biology
Juniata College

> On Feb 1, 2018, at 9:38 PM, Kirsten Johnson <kirsten2622 at comcast.net> wrote:
> 
> 
> Thanks Norris. What is a better way to phrase the relationship between Ailanthus and spotted lantern fly so as not to oversell the value of removing Ailanthus?
> 
> Kirsten
> 
> Sent from my iPad
> 
>> On Feb 1, 2018, at 8:24 PM, Muth, Norris (MUTH) <MUTH at juniata.edu> wrote:
>> 
>> My quick search didn’t turn up anything to support that statement ("adult SLF seem to require a meal from these trees prior to laying eggs.”) and I’m not sure I could imagine that anyone in the US has done enough research to reasonably demonstrate that. I hope I’m wrong – but I would also like to see the supporting evidence as well.
>> 
>> —
>> 
>> Norris Z. Muth, Ph.D.
>> 
>> Associate Professor, Biology
>> 
>> Office: 814-641-3632 | 1054 VLB
>> 
>> Juniata College
>> 
>> 1700 Moore Street
>> 
>> Huntingdon, PA 16652
>> 
>> muthlab.org<http://muthlab.org> | NativePlantAdvocate.org<http://NativePlantAdvocate.org>
>> 
>> 
>> From: Marc Imlay <ialm at erols.com<mailto:ialm at erols.com>>
>> Date: Thursday, February 1, 2018 at 8:04 PM
>> To: "maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>" <maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>>, "INVASIVES at LISTSERV.UMD.EDU<mailto:INVASIVES at LISTSERV.UMD.EDU>" <INVASIVES at LISTSERV.UMD.EDU<mailto:INVASIVES at LISTSERV.UMD.EDU>>
>> Subject: [MAIPC] FW: Ailanthus and Spotted Lantern Fly two for the price of one
>> 
>> 
>> How should I best answer Kirsten? Thanks
>> 
>> Marc
>> 
>> From: Kirsten Johnson [mailto:kirsten2622 at comcast.net]
>> Sent: Thursday, February 01, 2018 10:49 AM
>> My quick search didn’t turn up anything to support that statement ("adult SLF seem to require a meal from these trees prior to laying eggs.”) and I’m not sure I could imagine that anyone in the US has done enough research to reasonably demonstrate that. I hope I’m wrong – but I would also like to see the supporting evidence as well.
>> 
>> —
>> 
>> Norris Z. Muth, Ph.D.
>> 
>> Associate Professor, Biology
>> 
>> Office: 814-641-3632 | 1054 VLB
>> 
>> Juniata College
>> 
>> 1700 Moore Street
>> 
>> Huntingdon, PA 16652
>> 
>> muthlab.org<http://muthlab.org> | NativePlantAdvocate.org<http://NativePlantAdvocate.org>
>> 
>> 
>> From: Marc Imlay <ialm at erols.com<mailto:ialm at erols.com>>
>> Date: Thursday, February 1, 2018 at 8:04 PM
>> To: "maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>" <maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>>, "INVASIVES at LISTSERV.UMD.EDU<mailto:INVASIVES at LISTSERV.UMD.EDU>" <INVASIVES at LISTSERV.UMD.EDU<mailto:INVASIVES at LISTSERV.UMD.EDU>>
>> Subject: [MAIPC] FW: Ailanthus and Spotted Lantern Fly two for the price of one
>> 
>> 
>> How should I best answer Kirsten? Thanks
>> 
>> Marc
>> 
>> From: Kirsten Johnson [mailto:kirsten2622 at comcast.net]
>> Sent: Thursday, February 01, 2018 10:49 AM
>> To: Marc Imlay <ialm at erols.com<mailto:ialm at erols.com>>
>> Subject: Re: Ailanthus and Spotted Lantern Fly two for the price of one
>> 
>> Marc -
>> 
>> This is important information. What is your source for possibility that adult spotted lanternfly actually require an Ailanthus meal to lay eggs?  I see the statement in Wikipedia, but it is not footnoted there. Do you have a scientific source?
>> 
>> Kirsten
>> 
>> 
>> 
>> 
>> On Jan 27, 2018, at 8:55 AM, Marc Imlay <ialm at erols.com<mailto:ialm at erols.com>> wrote:
>> 
>> 
>> 
>> 
>> From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Marc Imlay
>> Sent: Saturday, January 27, 2018 8:53 AM
>> To: Simmonds, Tanya <Tanya.Simmonds at pgparks.com<mailto:Tanya.Simmonds at pgparks.com>>; Abellera, Jon Paolo <JonPaolo.Abellera at pgparks.com<mailto:JonPaolo.Abellera at pgparks.com>>; Abrams, Amanda <Amanda.Abrams at pgparks.com<mailto:Amanda.Abrams at pgparks.com>>; Adams, Michelle <Michelle.adams at Pgparks.com<mailto:Michelle.adams at Pgparks.com>>; Dillon, John <John.Dillon at pgparks.com<mailto:John.Dillon at pgparks.com>>; Dolesh, Mike <Mike.Dolesh at pgparks.com<mailto:Mike.Dolesh at pgparks.com>>; Garrett, Chris <Chris.Garrett at pgparks.com<mailto:Chris.Garrett at pgparks.com>>; Harley, George <George.Harley at pgparks.com<mailto:George.Harley at pgparks.com>>; Lee, Jill <Jill.Lee at pgparks.com<mailto:Jill.Lee at pgparks.com>>; Mills, Devin <Devin.Mills at pgparks.com<mailto:Devin.Mills at pgparks.com>>; Sweet, Benjamin <Benjamin.Sweet at pgparks.com<mailto:Benjamin.Sweet at pgparks.com>>; Westby, Brooke <Brooke.Westby at pgparks.com<mailto:Brooke.Westby at pgparks.com>>; Ellis, Michael <Michael.Ellis at pgparks.com<mailto:Michael.Ellis at pgparks.com>>; DaSilva, Calvin <Calvin.DaSilva at pgparks.com<mailto:Calvin.DaSilva at pgparks.com>>; MacGregor, Ashlyn <Ashlyn.MacGregor at pgparks.com<mailto:Ashlyn.MacGregor at pgparks.com>>; Rod.Simmons at alexandriava.gov<mailto:Rod.Simmons at alexandriava.gov>; TreeStewardsArlAlexVA at googlegroups.com<mailto:TreeStewardsArlAlexVA at googlegroups.com>; Gribble-Fetter, Patrice <Patrice.gribble-fetter at pgparks.com<mailto:Patrice.gribble-fetter at pgparks.com>>; Jacob, Stephanie <Stephanie.jacob at pgparks.com<mailto:Stephanie.jacob at pgparks.com>>; Bookbinder, Antonia <Antonia.Bookbinder at pgparks.com<mailto:Antonia.Bookbinder at pgparks.com>>; Burnham, Holly <Holly.Burnham at pgparks.com<mailto:Holly.Burnham at pgparks.com>>; 'Art Gover' <aeg2 at psu.edu<mailto:aeg2 at psu.edu>>; gramos at blm.gov<mailto:gramos at blm.gov>; Jurkiewicz, Mary <Mary.Jurkiewicz at pgparks.com<mailto:Mary.Jurkiewicz at pgparks.com>>; Patterson, Nicole <nicole.patterson at pgparks.com<mailto:nicole.patterson at pgparks.com>>; Garrett, Chris <Chris.Garrett at pgparks.com<mailto:Chris.Garrett at pgparks.com>>; 'Servis, Robert' <Robert.Servis at montgomeryparks.org<mailto:Robert.Servis at montgomeryparks.org>>; antonia.bookbinder at gmail.com<mailto:antonia.bookbinder at gmail.com>; Ellis, Michael <Michael.Ellis at pgparks.com<mailto:Michael.Ellis at pgparks.com>>; 'Joe Mudd' <William.Mudd at pgparks.com<mailto:William.Mudd at pgparks.com>>; Finch, Kim <Kim.Finch at ppd.mncppc.org<mailto:Kim.Finch at ppd.mncppc.org>>; 'Lareuse, Susan' <Susan.Lareuse at ppd.mncppc.org<mailto:Susan.Lareuse at ppd.mncppc.org>>
>> Cc: maipc at lists.maipc.org<mailto:maipc at lists.maipc.org>; INVASIVES at LISTSERV.UMD.EDU<mailto:INVASIVES at LISTSERV.UMD.EDU>
>> Subject: [MAIPC] Ailanthus and Spotted Lantern Fly two for the price of one
>> 
>> Dear M-NCPPC,
>> 
>> We have two for the price of one justification for controlling all our Tree of Heaven.
>> 
>> First the bad news
>> 
>> Lycorma delicatula, commonly known as the Spotted Lanternfly (SLF), is a new invasive insect that has spread throughout southeastern Pennsylvania since its discovery in Berks County in 2014. SLF presents a significant threat to Pennsylvania agriculture, including the grape, tree-fruit, hardwood and nursery industries, which collectively are worth nearly $18 billion to the state's economy.
>> https://extension.psu.edu/spotted-lanternfly
>> 
>> 
>> Then the good news
>> 
>> Although SLF will feed on other trees and plants, all life stages strongly prefer tree of heaven, and adult SLF seem to require a meal from these trees prior to laying eggs. This provides an opportunity to concentrate the SLF population on a property by performing host tree reduction. This method involves removal or killing of most tree of heaven on an infested property while leaving a few to serve as trap trees.
>> 
>> Tree of Heaven Control Methods: Control of tree of heaven requires suppression of the regenerating root system of this species. Because of this, many tree of heaven infestations require multiple treatments to control a population with continued monitoring for regrowth. Various methods of treatment may have to be utilized for complete control. Establishing a native or non-invasive groundcover may help in control of sprouts and seedlings following herbicide treatments. Foliar sprays: A foliar spray with a recommended herbicide is the most common control for tree of heaven. The spray should cover the leaves and shoots that are at an attainable height. Foliar sprays are effective for control of sprouts and suckers, and are best if used with a surfactant to obtain better coverage and absorption into the leaves. Optimal time for treatment with a foliar spray is June to September. Basal bark spray: Basal bark sprays can be an effective means of control for young tree of heaven that are less than four inches in diameter. Spray the recommended herbicide with an oil carrier on the lower twelve to eighteen inches of the stem, until the bark is wet, but not running off. This treatment works well for control of smaller trees in summer and late winter, as it chemically girdles the stem where applied. Stump treatments: Applying a recommended herbicide to a freshly cut stump is essential to deter sprouting and suckering. Herbicide treatment should be made immediately after the cut so that it may be absorbed into the roots. This method works best during the active growing season of the tree from June through September. Hack and Squirt: Hack and squirt treatment is an effective treatment for control of tree of heaven and is made by making a series of downward cuts into the bark with an axe or machete. The cuts which form small cups and are approximately chest height are made evenly around the tree. Herbicide is then applied to each cut where it is taken up into the tree. Hack and squirt does not girdle the stem as there is spacing between the cuts, which allows the herbicide to be transported through the trees conductive system. Best results occur during the June to September growing season.
>> 
>> http://www.agriculture.pa.gov/Protect/PlantIndustry/spotted_lanternfly/Documents/Spotted%20Lanternfly%20%20Property%20Management.pdf
>> 
>> So MNCPPC,
>> 
>> We have 2 for the price of 1 justification for controlling all our Tree of Heaven.
>> .
>> Marc Imlay, PhD, Chair, MAIPC Biological control working Group Conservation biologist,
>> Park Ranger Office, Non-native Invasive Plant Control coordinator. Marc.Imlay at pgparks.com<mailto:Marc.Imlay at pgparks.com>
>> (301) 442-5657 cell  Natural and Historical Resources Division The  Maryland- National  Capital Park and Planning
>> Commission
>> 
>> 
>> 
>> 
>> 
>> 
>> Executive Order Strengthens Fight Against Invasive Pests
>> Jan 2, 2018
>> 
>> HARRISBURG, Pa. — Recognizing the increasing threat invasive species pose to Pennsylvania’s economy and people, Gov. Tom Wolf last week announced an additional step to complement recent bipartisan legislation to help battle bad bugs and out-of-control plants.
>> 
>> Wolf signed an executive order expanding the Governor’s Invasive Species Council to bring additional expertise and resources to bear in the battle against new invasive species, such as the spotted lanternfly, which has been found in 13 southeastern Pennsylvania counties.
>> 
>> “When a new pest or species is introduced into an ecosystem, it disrupts the natural order, posing a threat to native species, established industries and the quality of life of our residents,” Wolf said.
>> 
>> The council will be expanded from 10 to 14 members to pave the way for adding representatives of county and municipal governments, conservation districts and the transportation sector.
>> 
>> State Agriculture Secretary Russell Redding will continue to serve as the council’s chairman.
>> 
>> In addition to the spotted lanternfly, which could cause hundreds of millions of dollars of losses in Pennsylvania agricultural commodities, the state is facing other threats from species such as hydrilla, an invasive plant affecting the state’s lakes; round goby, a fish invading rivers and the Great Lakes; and Palmer amaranth, an invasive weed threatening row crops.
>> 
>> Wolf’s new order follows his signing of the Controlled Plants and Noxious Weeds Act in October. The new law took effect on Dec. 29.
>> 
>> Act 46 repeals the previous noxious weed law in favor of a more proactive approach to control existing and potentially noxious weeds while maximizing resources to control invasive species and protect state lands.
>> 
>> 
>> From: Don Callihan [mailto:don_ihan at hotmail.com]
>> Sent: Monday, January 22, 2018 8:27 AM
>> To: Marc Imlay <ialm at erols.com<mailto:ialm at erols.com>>; invasives at listserv.umd.edu<mailto:invasives at listserv.umd.edu>
>> Subject: Re: [INVASIVES] spotted lanternfly
>> 
>> While waiting for federal, state, and local agency responses, this could be an opportunity to mobilize citizen science to detect and help us contain the infestation. Take advantage of the relative ease of recognition of both the pest and Ailanthus at all stages. Engage school science teachers at all levels in teaching recognition and reporting. Engage garden clubs, friends of parks groups, churches, neighborhood associations, and civic organizations, as well as landscapers and nursery employees, in getting the word out. We need as many eyeballs as possible looking for this pest and keeping it contained. Treat it as a regional issue and coordinate among mid-Atlantic states, not just as Pennsylvania’s problem. Can MAIPC take the lead for such an effort? Will require a concerted and well-coordinated effort on the part of the many institutional silos among us.
>> 
>> This is a real and urgent opportunity to educate the public about the importance of control of NNIs in protecting our forests and agricultural assets.
>> 
>> Where can we start?
>> 
>> Don Callihan
>> 410-961-8132
>> don_ihan at hotmail.com<mailto:don_ihan at hotmail.com>
>> Sent from my iPad.
>> ________________________________
>> 2.  The solution may still be EDRR , Early Detection, Rapid Response. The barrier is NIMBY; it is Not In My Back Yard. People take action when they can feel it. As Kerrie said, what good is early detection without rapid response, with WLBG a decade ago.  This barrier has been met before but only with a strong enough effort.
>> 
>> Editorial: A strong argument for help fighting lanternfly
>> 
>> Monday January 15, 2018 12:01 AM Reading Eagle, Reading, Berks County, PA
>> 
>> Berks County Commissioner Christian Y. Leinbach must have taken a panel of U.S. and state lawmakers aback with his strongly worded warning about the need for swift action to eradicate the spotted lanternfly. The chairman of the commissioners delivered his plea for federal funding in appropriately stark terms during an appearance before a legislative forum at the Pennsylvania Farm Show.
>> 
>> "We need an immediate response. If we don't get these resources to us before the spring hatch in two months, it may be too late," Leinbach said. "The spotted lanternfly will wipe out the grape industry, could wipe out hardwood, and is impacting orchards."
>> 
>> "This is apocalyptic from an economic and environmental standpoint," he added. "We have heard from grape growers and orchard owners: One more year of this, and they are out of business."
>> 
>> Those of us who have witnessed the rapid spread of the pest over the past few years know that the commissioner is hardly exaggerating. For a while it was largely limited to a relatively small, rural section of eastern Berks County. But in 2017 the pest was spotted in large numbers in much of the region.
>> 
>> The spotted lanternfly is native to Asia but came to North America in a shipment to Berks County, where it was first spotted in 2014. The pest, which destroys grape vineyards and hardwoods and has been seen in apple orchards, has spread to 13 southeast Pennsylvania counties.
>> 
>> Leinbach needed to make a strong case because of the uphill climb he's facing. He is requesting $40 million in federal funding. Getting any money from Washington or Harrisburg is difficult right now. Getting it in a matter of weeks is even more challenging.
>> 
>> If he accomplished nothing more than putting this issue on state and national lawmakers' radar, it will have been worth the trip to Harrisburg, though we do urge officials to find funding right away to combat the pest and research ways to eradicate it.
>> 
>> Right now the problem is largely unknown outside this region. Leinbach is making a persuasive argument that it won't be long before it spreads to other states unless something is done swiftly. Each year the number of lanternflies grows, more eggs are laid, and the numbers keep multiplying. Leinbach said the number of lanternflies is approaching 1 trillion.
>> 
>> "If we are not successful," the commissioner argued, "not only will Pennsylvania face quarantines, the United States could face quarantines because Canada, South America, Mexico and Europe are watching it."
>> 
>> Leinbach told the panel the plan is to prepare 40,000 trap trees in the spring. A notch would be cut around certain trees to seep sap and attract the insects. The trap trees would be treated with pesticide. Money is needed to execute this plan.
>> 
>> But we should not be leaving the response to this problem to government alone. Landowners need to destroy the ailanthus tree, also known as the tree of heaven. The spotted lanternfly feeds on it before reproducing. And people in areas that haven't seen the pest in the past should report lanternfly sightings to state agriculture officials.
>> 
>> This is the year to get a handle on this program. That means a strong effort by all levels of government in cooperation with residents in affected areas. Leinbach's appearance in Harrisburg should push things in that direction.
>> 
>> 
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