Big Island Invasive Species Committee (BIISC)

Coronavirus Response

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We are committed to protecting our island and all of our wonderful community from the impacts of invasive species as much as we can, and right now, it looks like that includes the viral kind!

In aligning with current recommendations, we are taking these steps to limit social interaction and prevent the spread of Covid19:

  • Our office in Hilo will be closed to the public beginning Wednesday, March 18.*If you have questions or want to report something weird, don’t hesitate! Email us at biisc@hawaii.edu, FB message, or call 933-3340 – we will be checking and responding to all messages (with maybe a slight delay).
  • If you have samples of ants for identification, please mail them (frozen!) to 23 E. Kawili Street and we will try to get your to you results within a week of receipt.
  • We will not be scheduling any new community LFA trainings or public speaking engagements in the near future. If you want to hold a virtual meeting for your community of any age and ask folks to tune in, we can make that happen. Just reach out and we’ll work with you to set up some “distance education” to keep us all learning through this time.

Please take care and follow all recommendations for social distancing and good hygiene. We look forward to seeing all of you very soon, happy, healthy, and ready to battle some invasive species when this crisis has passed. Much aloha from the BIISCuits!

Alert: New pest attacking Avocado

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Per Hawaii Department of Agriculture, Feb 2020, the avocado lace bug has been reported on Hawaii Island.  If you note anything suspicious, please take clear photos from various angles that you can use to begin communications with DOA folks.  Possible infestations should be reported to HDOA’s Plant Pest Control Branch at: hdoa.ppc@hawaii.gov. Please include photos of the damage to avocado plants to help with identification. 

Avocado lacebug on Oahu. Photo courtesy HDOA.

HDOA Alert:

avocado lace bug field ID photo guide 1-7-2020

A new pest of avocado was identified on Oahu in December and has since been found on Maui and the Big Island in February 2020.  Pseudacysta perseae (Hemiptera: Tingidae), avocado lace bug, is a new state record for Hawaii and was first detected in Pearl City in December 2019.  It has also been found in the Waialua area.  Here are some quick facts, field survey photos, and photos attached.  Please forward this information to farmers and growers of avocado.  Further informational flyers will be forthcoming. Possible infestations should be reported to HDOA’s Plant Pest Control Branch at: hdoa.ppc@hawaii.gov. Please include photos of the damage to avocado plants to help with identification. 

HOSTS:

Avocado (Persea Americana), red bay (Persea borbonia), and camphor (Cinnamomum camphora)

SYMPTOMS AND DAMAGE TO LOOK FOR:

    • Yellow blotching and chlorosis, scorching on leaves
    • early leaf drop
    • Undersides of leaves with black feces and eggs
    • Adults and nymphs on the undersides of leaves

LINKS TO INFO:

https://biocontrol.ucr.edu/hoddle/avocado_lace_bug.html

http://ipm.ucanr.edu/PMG/PESTNOTES/pn74134.html

 

2020 Proposed Legislation – UPDATED MAR 4th!

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There have been several bills introduced in the legislature this session which have to do with invasive species.  Below are some of the bills that BIISC will be writing supportive testimony for this year, and we encourage you to read and consider each bill before sharing your own thoughts with our legislators.

The Hawaii State Legislative Site is very easy to use and once you have set up an account with your basic information, you can provide testimony in under a minute if you’re in a hurry!  An optional comment box allows you to add additional thoughts and personal experience that may help shape the legislators’ understanding of an issue. Check out this helpful guide to learn more about the site or here for some tips on creating effective testimony.

Invasive Species Rapid Response Fund:

HB2265, SB 2713 (Click bill number to go to the legislative site)

Update Wed 3/4/20: SB2713 has crossed over from the Senate to the House!  This is an important step in the progress of a bill.  The responsibility for keeping this bill alive now rests in the House committees and we will post if/when a House hearing is scheduled.

HB2265 was referred to the House Committee on Finance on Feb 14th and as of today has not received a hearing in that committee. 

These bills support the creation of a special fund which can be made available when a new pest reaches our shores.  Currently, those of us dealing with invasive species (including conservation and agricultural groups), are hampered by the lack of immediate funding to respond when a new pest is discovered. Although it seems easy to say, “Just eradicate it!” when we find something new and potentially harmful, in practice it just isn’t that simple.

QLB (Acalolepta aesthetica) in Puna

Take the Queensland Longhorn Beetle. Because it has never been reported as a pest in agricultural or forests before anywhere else in the world (including its native Queensland) there is no information on how to control it- because no one has tried before! Additionally, there is almost no information available about its life cycle, eating habits, reproduction…all of which can be crucial pieces of information needed to learn how to control it. We need researchers with the right expertise and experience to get this information and use it to test potential solutions. Suggestions have been made to try everything from pesticides to detector dogs to biocontrol – but all of these programs take time and money to develop.

Waiting to set such efforts in motion until sufficient money and manpower is available creates more time and space for the pest to spread. Other places in the world with solid biosecurity plans in place have rapid response structures, with funding, available to respond to new pests, and we believe Hawaii should follow the model of these more successful programs and adopt a rapid response fund.

Positions to increase capacity for Invasive Species Control on Hawaii Island

Nymph of the two-lined spittlebug (TLSB)

HB1849 Would establish a new West Hawaii technician position for Hawaii Ant Lab, to respond to little fire ants in West Hawaii. 3/4/20: This bill was referred to the House Finance Committee on Feb 5 and as of today has not received a hearing. 

SB2622 Adds 4 new positions to DLNR for invasive species technicians in the County of Hawaii. 3/4/20: This bill has crossed over from the Senate to the House!  This is an important step in the progress of a bill.  The responsibility for keeping this bill alive now rests in the House committees and we will post if/when a House hearing is scheduled.

Species-focused bills

SB3042, HB2532 Provides funding for research and response to the growing threat posed to ranchers, conservation programs, and homeowners by the Two-Lined Spittlebug (TLSB).  The TLSB threatens the ranching industry and paniolo culture of the Big Island, and more than 150,000 acres have been affected in the last 4 years. Pastures are decimated after infestation, with 100% death of grasses and subsequent invasion by more aggressive brush species. 3/4/20: These bills have crossed over!  This is an important step in the progress of a bill.  We will post if/when hearings are scheduled to continue the bills in the session.

SB2623 , HB1861 Extends CBB subsidy program (scheduled to expire this year) to provide continued support for farmers fighting the coffee berry borer. 3/4/20: The bill has crossed over! This is an important step in the progress of a bill.  We will post if/when hearings are scheduled to continue the bill in the session.

HB1862 Would prohibit bag limits on game mammals in managed hunting areas. 3/4/20: This bill was referred to the House Judiciary Committee on Feb 11th and as of today has not received a hearing in that committee. 

SB2463 Would remove all bag limits for pig hunting on Mauna Kea, and would instruct DLNR to install one-way gates in conservation areas to help with movement of pigs out of sensitive conservation land. 3/4/20 This bill was referred on Jan 23 and as of today has not received a hearing. 

Exploring invasives as resources

HB2015 Would fund a pilot project on Mauna Kea through DHHL to harvest the destructive invasive plant gorse and develop it as marketable product (like biochar). Update 3/4/20: This bill has been referred as of 3/3/20 and we will update if/when it is schedule for a hearing. 

HB2639 Would authorize and fund the UH Economic Research Organization (UHERO) to conduct an economic analysis of the potential costs and benefits of albizia removal for commercial use and restoration to native and non-invasive species in Manoa Valley (economic information that could potentially be translated to assess Big Island albizia populations). 3/4/20: This bill was referred on Jan 27 and has not been scheduled for a hearing in its new committee. 

Chasing Rapid ʻŌhiʻa Death

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Dustin, early detection technician, standing in a healthy ʻōhiʻa forest.

In 2010, residents in Puna began reporting an alarming observation: across the community,  large swaths of ʻōhiʻa trees were dying. Within days to weeks a seemingly healthy tree would brown and die. The cause was at first unknown, and the phenomena came to be known as Rapid ʻŌhiʻa Death (ROD). Hundreds of samples were taken from trees and analyzed, and scientists in Hawaiʻi worked closely with specialists around the world to zero in on the culprit.  By 2015, they had narrowed the identification down to Ceratocystis fungus, and by 2018 found that it was not one but two species of Ceratocystis fungi that caused ROD.  Both were new to science, having never been found before, and were given Hawaiian names: C. lukuohia (causes systemic tree death, very aggressive) and C. huliohia (causes a canker disease, less virulent).

ʻŌhiʻa serves as a keystone species of Hawaiian forests, maintaining healthy watersheds and providing habitat for native flora and fauna. For those trying to preserve the remaining habitat and the functions of our life-supporting ecosystems, a potential loss of ohia meant profound negative impacts.  A large working group consisting of dozens of individuals from agencies, universities, and non-profits came together to learn more about ROD and how to respond to it. As part of the working group, BIISC formed a rapid ʻōhiʻa death early detection/rapid response (EDRR) team to actively monitor and manage the spread of ROD in high priority areas on Hawaiʻi Island (Hāmākua, Kohala, and North Kohala), finding new detections of ROD and providing feedback to scientists on management efforts. Bill Buckley, BIISC’s Forest Response Coordinator, leads a crew of six ROD-EDRR technicians.

Early Detection

“Our crew performs quarterly aerial surveys by helicopter-two island-wide surveys and two surveys in North Hawaiʻi – to gain a clearer understanding of the changing forest canopy,” says Buckley. Using digital mobile sketch mapping technology, BIISC technicians map the forest canopy and identify suspect ROD trees from the air. As of October 2018, nearly 135,000 acres of ʻōhiʻa forest on Hawai‘i island showed some signs of the disease.

Once suspect trees are identified by helicopter, the team follows up with drone surveys to obtain accurate GPS coordinates of the area. Field work transitions from the air to the ground as the crew navigates to trees of interest to collect samples.  ROD technician Kristen Hofer, who has been with the team since its formation, explains, “We use a standardized method developed by ROD researchers, that is used on other islands as well. First, collect wood chips with a hatchet, next, collect wood shavings using a drill, and finally, apply a pruning seal to collection site. The seal doesn’t prevent insects from attacking, but it does prevent the fungus from sporulating from the wound.”  The samples are then submitted to Dr. Lisa Keithʻs USDA-PBARC lab in Hilo for DNA analysis. “If we are camping in a remote area and need to make sampling and management decisions quickly, we use our lab-in-a-suitcase technology, which gives us results in just a few hours,” says Hofer.

 

Rapid Response: Management

Once a tree has tested positive for ROD, our team can begin to make informed management decisions. Researchers have recently confirmed that ambrosia beetles play a role in the spread of rapid ʻōhiʻa death. These tiny beetles, attracted to dead and dying trees, burrow into infected wood and produce frass (tiny amounts of sawdust) that are laden with fungal spores and then carried in the wind or in soil. In order to reduce beetle activity and the amount of frass produced in the environment,  the crew may cut infected trees down and cover them with tarps. However, this decision must be carefully considered. If felling a tree has the potential to damage living ʻōhiʻa nearby, it may be better to leave the tree standing than to risk wounding healthy trees and providing a possible entry point for ROD. Applying an insecticide to prevent beetle activity in wood piles or standing dead trees is another potential option that is currently being investigated.

Training 

The ROD-EDRR team at BIISC also trains other conservation agencies and land managers in Hawaiʻi on proper early detection and rapid response methods for ROD. To date, we have hosted multiple trainings here on Hawaiʻi Island for groups from Maui Nui and Oʻahu and we have also traveled to Kaua’i to train crews.

Queensland Longhorn Beetle

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January 2020: live specimens are still being collected!  If you have a possible QLB, please drop it off at 23 E. Kawili St.in Hilo. If you find a QLB but are not able to catch it alive, please take a picture to send to us, then squish it or freeze it to prevent it from reproducing.

November 2019 HDOA Update

Update from Hawaii Department of Agriculture Hilo Branch, November 2019: 

Confirmed host plants:

  • Kukui (Aleurites moluccanus)
  • Breadfruit (Artocarpus altillis)
  • Various citrus (Citrus spp.)
  • Queen Sago (Cycas cirinalis)
  • Cacao (Theobroma cacao)
  • Mulberry (Morus sp.)
  • Trumpet tree (Cercropia obtusifolia)
  • Kalamungay (Moringa oleifera)
  • Norfolk pine cut logs (Araucaria heterophylla)
  • Avocado cut logs (Persea americana)

Unverified, but possible host plants:

  • Gunpowder tree (Trema orientalis)
  • Hibiscus (Hibiscus spp.)

USDA-ARS is still collecting live beetles!  If you capture a beetle please bring it to our offices or contact us to arrange pick-up. Need a specimen holder?  Come pick up a jar or container at our office for free any day during the week!

March 2018: An invasive beetle is attacking cacao, citrus, breadfruit, and kukui on the east side of the Big Island. The beetle, Acalolepta aesthetica, is believed to have been accidentally introduced through imported commodities from the Queensland region of Australia. Beetles in this family, the Cerambycids, are wood-borers and are known to burrow into wooden packing materials. Acalolepta aesthetica is related to the Asian longhorn beetle, infamous for devastating forests in North America with estimated costs for control more than $600 million since the 1990s.

The USDA Agricultural Research Service lab in Hilo is currently asking for live specimens of beetles for research. Dr. Sheina Sims and her team are looking to map the beetleʻs genetics, an important tool in early detection when beetles are found in the difficult to identify larval stage. Additionally, working with BIISC and the East Hawaii Cacao Association, the ARS team will be launching a trapping study to determine if there are pheromones or other attractant traps that could be used to find and monitor beetle populations.

This longhorn beetle from the Queensland area of Australia appears to have first arrived in Hawaii about a decade ago. The first sample was turned in from the Orchidland area in 2009, but for several years after, there were no reports.  However, in 2013, HDOA received 3 more submissions, with a handful of beetles appearing each subsequent year.  By 2017, it appeared the beetles had begun to spread, with specimens collected in Hawaiian Acres, Kea’au, and Kurtistown.  In summer of 2018, specimens were captured in Pahoa and Hilo, indicating the beetle may be expanding its territory.

Adult beetles will feed on the bark, branches, and leaves of preferred plants, but the real damage is caused by the larvae. The females lay eggs in wood, usually in stressed, dying, or weakened trees. The emerging larvae will tunnel through the tree’s vascular system, creating tunnels that weaken the wood and interrupt the plant’s ability to transport nutrients and water.  In one case in Puna, an infested Sago palm became so weak it collapsed under its own weight.

In addition to cacao, citrus, kukui, and Sago palms, A. aesthetica may potentially attack other hardwoods present in Hawaii,  from important crop trees to native forest species.

There is no known treatment for an infestation of A. aesthetica.  Adult beetles appear to be attracted to light at night, where they can be collected. HDOA advises that routine IPM insecticidal applications may deter adult beetles from selected areas; however, research is needed to determine how to address beetle infestation. The best strategy is prevention: be very cautious in moving potential host plant species from the infected area between Kea’au and Pahoa. Trees infested with the larvae should be destroyed.

Contact BIISC with a photo via email at biisc@hawaii.edu or on Facebook to report any beetle sightings. Beetles can be also dropped off at our office at 23 E. Kawili St.

August 10, 2018 Pest Release by HDOA:

Australian Longhorn Beetle Pest Advisory

Australian Longhorn Beetle Quick Pest Fact Sheet

Māmalu Poepoe: sphere of protection

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Each year, over a million flights are landing in Hawaiʻi or taking off to other destinations.  As global movement of people and goods to Hawaiʻi increases, so do the chances of an alien species hitching a ride to our beautiful islands. According to the Coordinating Group on Alien Pest Species (CGAPS), an average of 20 new insects become established in our islands annually, half of which are known pests elsewhere in the world. These pests have the potential to cause grave harm to Hawaiʻi’s natural environment, economy, human health, and way of life. The Māmalu Poepoe Project, administered by the Hawaiʻi Invasive Species Council, brings multiple agencies together to enhance monitoring of airport facilities statewide. Māmalu Poepoe, which means the sphere of protection, aims to increase surveillance of select high priority pest species that are known to be traveling around the world that are at risk for accidental delivery to Hawaii.

As one of the participating agencies in Māmalu Poepoe, BIISC monitors detection stations  for Africanized honey bees and coconut rhinoceros beetles at the Hilo and Kona airports. Both of these species, if introduced, pose significant threats to Hawaiʻi Island.

Africanized Bees

Africanized honey bees (AHB), commonly referred to as killer bees, are a major threat to human health and safety. Although AHB look the same as domestic honey bees, they are extremely aggressive when it comes to defending their hive. These bees attack in large groups and have been known to pursue their target for over two miles! Africanized bees are adapted to warm, tropical climates, with populations already established in the southern U.S and California. AHB swarm much more frequently than European honey bees, which increase the chances of accidental introduction to Hawaiʻi. AHB are also poor honey producers, which would directly affect local beekeepers.

AHB have already reached Hawaii’s shores in recent years: in 2011, harbor employees in Honolulu noticed a swarm of bees in a container of medical supplies shipped from Long Beach, California. They closed the container and contacted the Department of Agriculture, who fumigated the container and sent the bees off for genetic testing. They turned out to be Africanized bees. If AHB successfully establish populations in Hawaiʻi, it will devastate the agricultural industry. Hawaiʻi’s beekeeping industry is valued at $230 million a year and also functions as the backbone for mainland U.S. pollination, which is valued at $15 billion per year. Hawaiʻi is home to the most prolific queen bee producers in the world, providing 25% of mainland U.S. queens and 75% of Canada’s queens. Increased monitoring efforts are vital given the number of imported goods that arrive in Hawaiʻi every day. Our early detection crew monitors swarm traps set up at Hilo and Kona airports on a monthly basis in an effort to intercept AHB and prevent populations from establishing in the islands.

 

Coconut Rhinoceros Beetles

The coconut rhinoceros beetle (Oryctes rhinoceros) is an invasive insect currently found only on Oʻahu. CRB was detected at the Joint Base Pearl Harbor Hickam military facility in December of 2013. This beetle is native to the Asian tropics but has been accidentally introduced to western and central Pacific islands.  CRB is considered a major pest of the coconut tree; however it can also be found attacking betelnut, Pandanus species, banana, pineapple, and sugarcane. The beetle attacks coconut palms by boring into the center of the tree crown and feeding on the sap, which damages the young growing tissue. The damage can significantly reduce coconut production and kill the tree. In other areas of the Pacific such as Palau, coconut palms were eradicated entirely on certain islands because of CRB damage.

The coconut rhino beetle poses a significant threat to our only native and endangered tree palms, also known as Loulu (Pritchardia spp.). In addition to environmental impacts if beetle populations are largely established, Hawaiʻi’s tourism industry would also be impacted. Coconut palms are economically important as they are frequently used in landscaping and they also have significant cultural importance. One way to tell if a tree has CRB damage is to look for V-shaped cuts in the palm fronds. Another way to determine CRB damage is if large boreholes are present at the bottom of palm fronds. Our Early Detection team monitors CRB panel traps at both Hilo and Kona airports on a monthly basis in order to intercept and eradicate the beetle if introduced to Hawaiʻi Island.

If you suspect the presence of Africanized honeybees or Coconut Rhinoceros Beetles in your area, please report it! Report particularly aggressive hives, feral or managed, to Hawaiʻi Department of Agriculture’s Hawaiʻi Apiary Program at (808) 974-4138. Report suspected CRB damage to BIISC at (808)933-3340 or e-mail biisc@hawaii.edu.

 

Invasive Ants

Ants have been particularly successful at spreading around the globe. One major reason is because these tiny creatures hitchhike on our stuff. Ants are not native to Hawaiʻi, however there are roughly 57 ant species that have become established in the islands. Troublesome ant species, such as little fire ants or big-headed ants, negatively impact our environment, economy, and way of life. There is a lack of predators in Hawaiʻi to keep ants in check, which allows the potential for populations to reach very high densities. Many of our native ground nesting seabirds, for example, are significantly impacted by invasive ants. Yellow crazy ants spray formic acid on a bird’s eyes, bill, and feet causing blindness, malformities, difficulty breathing, and loss of webbing on feet. Little fire ants have infested agricultural fields and farms on Hawaiʻi island where they are damaging crops and stinging workers. Residents and tourists alike continue to get stung at public beaches and parks.

The Māmalu Poepoe project aims to increase surveillance to address the potential introduction and establishment of an even worse ant species, the red imported fire ant (Solenopsis invicta). Red-imported fire ants (RIFA) are not currently present in Hawaiʻi but have been infesting countries around the world at a rapid rate, making them a high priority species to be on the lookout for. These mound building ants deliver painful stings to humans that produce a range of reactions from localized pain and swelling to anaphylaxis. RIFA are considered a major pest worldwide and are well established in the southeastern US. The Hawaiʻi Ant Lab, another project of the University of Hawaii, assists with regular ant surveys at major airport facilities throughout the islands. If this ant species is introduced and detected early, ant populations can be eradicated in a timely, cost effective manner. 

The Hawaii Ant Lab regularly monitors airports and harbors on the Big Island, Oahu, and Maui for new invasive ants. If you find a strange ant in your yard, report it to BIISC or contact 643-PEST.

 

Mosquitoes and mosquito-borne diseases

Mosquitoes, notorious for delivering irritating, itchy bites, are a widespread nuisance to humans. These pesky insects arrived in Hawaiʻi on foreign ships by way of infested drinking water barrels back in the 1800ʻs. The Culex mosquito, introduced in 1826, became the vector that spread avian pox and malaria to our Hawaiian forest birds. Today, our remaining forest birds exist mostly in high-elevation refuges where mosquitoes are unable to breed.

Currently, there are 6 species of biting mosquitoes that are established in Hawaiʻi. Mosquitoes pose significant threats to human health as vectors for diseases such as Dengue Fever, Zika, and Chikungunya. The Māmalu Poepoe project focuses on enhancing airport monitoring for existing and new species of mosquitoes known to vector these potentially deadly diseases. The yellow fever mosquito, currently present on Hawaiʻi Island, (Aedes aegypti) is a vector of dengue, chikungunya, and Zika virus. The Department of Health monitors airports across the state for potential introductions of the yellow fever mosquito or other new mosquito species.

ALERT: New Pest Killing Pastures in West Hawaii

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Adult two-lined spittle bug. Both adult and nymph forms feed on plants by sucking out nutrients.

Feb 2019: Researchers are asking for the public’s assistance in preventing the spread of an invasive insect destroying grasses in West Hawaii. The Two-Lined Spittle Bug (TLSB) was discovered in Kona late 2016, when a rancher in upper-elevation Hualalai first reported widespread die-off of pastures. Initial surveys found nearly 2000 acres were already affected.

By 2018, further surveys revealed that the insect had impacted 125,000 acres of rangeland from Makalei to Keokea. Spittle bugs feed by sucking nutrients and fluids from the plant stem, weakening and potentially killing the grass. Although Hawaii already has introduced spittle bugs present, none have had such severe impacts. Like many invasive pests that arrive in Hawaii, the new bug, a native of the southeastern US, was likely brought in accidentally on imported plant materials. Now, it is attacking kikuyu and pangola grasses: critical forage that support nearly 70% of Hawaii’s beef cattle industry.

To make matters worse, grasses in open lands prevent difficult and impactful weeds from moving in. Where TLSB has killed off the grass, invasive plant pests like pamakani, fireweed, and wild blackberry, long battled by ranchers and farmers, have begun to take over. The loss of grass and surge of weeds have been devastating to upper elevation pastures in Kona, which have not recovered from the damage.

Researchers are extremely worried that the spittle bug could be transported to the iconic pastures of Kohala and Hamakua. Kikuyu grass is the primary forage in many of these places, and a TLSB introduction could devastate the cattle industry and significantly change the character of the landscape.

Big Island residents are being asked to be alert about their lawns and pastures – patches of dead grass that cannot be explained by other environmental factors should be reported right away. As always, it is best practice on Hawaii Island to avoid movement of potted plants or live plant materials into new areas. Fire ants, ROD fungus, coqui eggs, and many other pests have traveled quickly and spread, on- and off-island, through this route. The spittle bug, very tiny in its nymph form, can easily attach to a plant stem without notice. Those who may visit Kona pastures or other areas impacted by TLSB– like hunters or ranch workers – should carefully clean their vehicles and equipment of any mud by washing out wheel wells and tires before traveling to other districts on the island.

Be familiar with the insect and if you see one, trap it and report it. If you see or suspect TLSB, reach out immediately to Mark Thorne, Range & Livestock Management specialist for the University of Hawaii extension service (CTAHR), thornem@hawaii.edu or 808-887-6183, and/or Carolyn Wong, USDA NRCS Grazing Land Management specialist, at Carolyn.wong@hi.usda.gov or 808-885-6602 (ext 105). Early detection is critical in containing the spread of this pest!

Download CTAHR Alert Nov 2018: CTAHR bulletin

Download CTAHR Alert Mar 2017: Spittle Bug Alert March 2017 ver 5. (Final)

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isc logo