RRN has not been detected in SAPW captured in California and this nematode is not known from other locations in the USA either. Just a . Riverside, CA 92521. Nematodes dont develop inside weevils. Many of these biological control agents do not provide adequate control of Red Palm Weevil in the field. Subsequent population control may result when host specific efficacious natural enemies are re-associated with the target pest via a classical biological control program. THINK RED PALM WEEVIL OR SOUTH AMERICAN PALM WEEVIL COULD BE PROBLEMS IN YOUR YARD? In Saudi Arabia in 2022 . To protect against infestation palms should be sprayed with chemical insecticides clorpirifos 48 imidacloprid or nematodes or a combination of the two as . Some crop protection products may not be registered for sale or use in all states or counties. With more than 13 million palms, Egypt's date production amounts to over 1 million tons per year. Biology and Management of Red Palm Weevil in Saudi Arabia Polana SPV Vidyasagar 2023 Gardening Know How, Future US LLC, Full 7th Floor, 130 West 42nd Street, New York, NY 10036. December 1996 for the control of the date palm red weevil, stem borer and grubs by entomopathogenic nematodes in the Arabian Peninsula. Pheromone Trap Surveys forRhynchophorus palmarumin California. An incision must be made to the middle of the trunk in order to reach the greatest number of conductive vessels or trachea. . . It was first collected from infested Canary Islands date palms (Phoenix canariensis)in Tijuana Baja California Mexico in 2010. Immature nematodes can apparently infest weevil larvae and remain in an immature stage until larvae pupate. Dissections of the 111 the adultR. palmarumcaptured in San Diego and Imperial counties failed to detect the presence of red ring nematode. CISR:Has the South American Palm Weevil,Rhynchophorus palmarum,Established in Southern California? 89.3 KPCC:Crews Deal with Discovery of Destructive Weevil in Orange County Neither the stressed palm odors or the weevil aggregation pheromone are very effective on their own. Looking for a rewarding career with opportunities for growth? Weevil larvae can excavate holes in the trunks of palm trees up to 1 metre (3.3 ft) long, thereby weakening and eventually killing the host plant. Contact your local Davey representative to find out how you can partner with Davey on your next project. Eggs: After 48 hr of treatment the egg shell was completely Spongy Moth, formerly known as Gypsy Moth. Biology and Management of the Red Palm Weevil: India J.R. Faleiro The Sinokrot's farm was under attack from the red palm weevil, a small insect native to South Asia that attacks more than 40 types of palms and causes more than $1bn in losses in the Middle East . Traps should not be hung from palm trees or placed near (i.e., within 500 yards) palms of interest. It is not necessary to remove the entire palm trunk. Canary Islands date palms in various states of decline because of SAPW infestation. Regarding the field longevity of Hook RPW, . The red palm weevil (RPW) Rhynchophorus ferrugineus (Olivier), a concealed tissue borer, is a lethal pest of palms and is reported to attack 17 palm species worldwide. In this way, adult boll weevils are captured. Los Angeles Times:L.A.'s palm trees are dying and it's changing the city's famous skyline The list of suceptible palms is a little longer for south Florida. Agrio, our mobile application, is a pocket agronomist that allows agriculture professionals, farmers, and gardeners to increase crop yeilds and solve plant protection problems. Palm mortality caused by feeding weevils will be a costly management expense for home and business owners as removing large dead palms is difficult. This study was conducted to evaluate some terpenes effect on the behavior and immune function of hemocytes in adults of the red palm weevil Rhynchophorus ferrugineus. We also offer care, nourishment, and tree preservation treatment to safeguard palm trees from such infestation in the future. There are 3 main weevils that tend to be an issue. It also works as a preventive strategy. Detection of South American palm weevil (Rhynchophorus palmarum) in Texas. When infested stems and trunks are cut in cross section the red lesions look like red rings. radiation dose, although there was no apparent effect on the F2 generation. All transported material should be covered with a tarp and disposed of at a certified landfill that buries within 24 hours (or sooner) of dumping to reduce risks of spreading adult weevils into new areas either enroute to or around the disposal site. Department of Entomology, In the lab, flight mill studies indicate that male and female weevils are capable of flying over 15 miles a day or more if they chose to do so. Europe: Cyprus, France, Greece, Italy, Spain, Portugal, and Turkey. Larvae may pass through 3-7 instarsorstages thatmay last for about two months before the pupal stage is reached. CISR/Mark Hoddle:Overview of the Red Palm Weevil, Article provided by:Nick Nisson,Donald Hodel, andMark S. Hoddle. Sometimes a pest control specialist will even inject an insecticide inside the palm, in order to rid the interior of the palm of this bothersome pest. If weevils are captured at this distance from the palms of concern it likely indicates that weevil activity is close and steps should be promptly considered and implemented for protecting those palms. Executive Order:President Obama issues EO to Protect the US from Invasive Species Tree Service Experts Since 1880. It is important that arborists and individuals working in palm canopies be vigilant for signs of larval mines and frass (excrement) in leaf bases in the central growing point of the palm in order to detect signs of early infestation. Contact your local environmental consulting team to find out how you can partner with Davey Resource Group on your next project. Each treatment was replicated . SAPW cannot reproduce on these fruit. Since then the beetle has spread from the US/Mexican border to as far north as Mission Valley. Adult SAPW attached to a flight mill in the lab, 2023 Regents of the University of California. Consequently, there are two different color types or color morphs for RPW, adults that are predominantly reddish in color, and the others that are dark with a red streak, like the Laguna Beach specimens. It consists of intravascular injections of chemical products into the trunk of the palm trees. Eggs are laid in these holes, they are relatively large, and female weevils can probably lay a hundred eggs or more over the course of a life time. Inland News Today:Pest Threatens Southern California's Iconic Palm Trees Corporate Headquarters1500 N Mantua St.Kent, Ohio 44240. Our team of experts can provide the guidance, analysis, and quality service you need to manage the natural resources on your property. Studies on red palm weevil in Europe have contributed to the following recommendations for trap placement for SAPW in California. Trunk injection of IMA-jet (Imidacloprid) will give both preventative and curative control providing there has not been extensive feeding damage to the palm. Geology Building, Room 2258 The moths are tan with a wing expanse of about 2 inches. Phoemyc is considered the best insecticide for red palm weevil. Trap placement is important for detecting weevil activity in an area of concern. The entire life cycle, egg to adult, can take about 3-4 months to complete. Younger trees less than 20 years old are particularly susceptible.Early detection is extremely difficult when 80% of its life cycle is hidden from view. (B)Infested palm shown in (A) being dropped. 2012. Photo by James Hanson The adults feed at random on bark and then drop to the ground to overwinter. Google Earth imagery (satellite photos taken 22 March 2016) near the eastern Willow Street Bonita Road entrance to the park clearly show dead Canary Islands date palms that may have been killed byR. palmarum. In addition to dead palms, some living palms displayed spectacular levels of feeding damage to fronds. They are considered the most destructive pest of palms in plantations worldwideincluding for coconut palms, date palms and oil palms. mark.hoddle@ucr.edu, Supervisory Project Scientist SAPW larvae dont drill deeply into the palm trunk and infestations are typically limited to the top 25% (or less) of the palm. New York Times:"Waiter, there's soup in my bug" DOC5:Red Pam Weevil Plague Documentary, CBS Evening News:Red Palm Weevils make California Gardeners see Red Insecticides are probably the most common control tool used against Red Palm Weevil, and can applied in a variety of ways for RPW suppression including applications as dusts, liquid sprays. Dr. Daniel Herms, Vice President of Research & Development at Davey, shares recent climate change data and projections. College of Natural and Agricultural Sciences, Effective January 18, 2015, the Animal and Plant Health Inspection Service (APHIS) has declarederadication of Red Palm Weevil from Laguna Beach California. Invasive palm weevils are pests that can wreak havoc on your palms. Adults can be up to 1 " in length. Rhynchophorus palmarum (South American palm weevil); larvae have no legs, initially 3-4 mm long, may reach 5-6 cm. The primary targets of the palmetto weevil, an insect native to Florida, are the exotic Canary Island date palm and Bismarck palm. It has been recorded attacking and reproducing on the following palm species: coconut (Cocos nucifera), African oil palm (Elaeis guineensis), aa palm (Euterpe oleracea), coco de palmito(Euterpe edulis), sago palm(Metroxylon sagu), Canary Islands date palm (Phoenix canariensis), and edible date palm (Phoenix dactylifera). Developing a pesticide treatment program should be made in consultation with a professional arborist, and two or more applications per year may be needed in infested areas to protect palms from weevil attack. Developing a pesticide treatment program should be made in consultation with a professional arborist, and two or more applications per year may be needed in infested areas to protect palms from weevil attack. Full sun exposure, especially during the hottest parts of the day, rapidly diminishes trap potency. The South American Palm Weevil is a species of snout beetle that has killed hundreds of Canary Island Date Palms, in San Diego, since it was first detected in March, 2016. Public's Palm-reading Needed to Ward Off Weevil, President Obama issues EO to Protect the US from Invasive Species, Palmageddon: The Invasion of California by the South American Palm Weevil, Invasive Weevil: Tiny insect poses huge threat to San Diego palm trees, Los Angeleno: The Indiana Jones of Insects Rescuing SoCal Palm Trees, Iconic SoCal palm trees in peril as palm weevil takes hold, Tiny Bug Looking to Take Out the Statuesque Palm Tree, 2023 Regents of the University of California. Overall, red palm weevil damage to any type of palm accounts for losses of millions of dollars because the pest feeds on the trunk. Larvae are legless grubs with the body color uniformly pale yellow with a brown head. ABC7 News:SoCal's Palm Trees Threatened by South American Weevil The larvae make an oval-shaped cocoon of on average 6 cm out of palm . (C)Injecting a systemic pesticide into a palm trunk. These orange and black morphs of SAPW have been found in California. Riparian areas in California with susceptible palm species may provide good habitat for weevil populations to proliferate. Red Palm Weevil larvae feed within the apical growing point of the palms creating extensive damage to palm tissues and weakening the structure of the palm trunk. Corky's Pest Control has developed an innovative treatment to prevent weevils from attacking expensive palm trees like the Canary Island Date Palm. It prefers wounded or stressed sabal palms, Bismarck palms or Canary Island date palm. Plus, receive a free instant download of our landscape seasonal checklists when you sign up! 2017. Weevil larvae become parasitized with nematodes and uninfected adults can acquire nematodes when they come into contact with nematode infested palms. This color morph can be easily confused with the red palm weevil,Rhynchophorus ferrugineus. RPWis highly attracted to two different types of odors: (1) volatiles emanating from unhealthy or damaged palm trees, and (2) aggregation pheromones (commercially available) which male weevils release to attract other male and female weevils to palm trees that are suitable for weevil larvae to use as food. And this can happen fast: A large population of South American palm weevils can destroy the internal tissue of a 3- to 5-year old palm tree in just 5 to 6 weeks. New biological pesticide can kill deadly palm-eating beetle, startup says Israel's PlantArcBio says it has developed a pesticide with '100% efficacy' to fight the deadly red palm weevil that. In this instance, aggregation pheromones are loaded into bucket traps along with palm material and granular insecticides. CBS Evening News:Red Palm Weevils make California gardeners See red The pupa will molt one more time within the cocoon to reach the adult form which has wings and can fly. drhodel@ucdavis.edu, Mark Hoddle, Extension Specialist andDirector of Center for Invasive Species Research This would be especially beneficial shortly after the passage of severe . Hoddle, M.S. Efficacy of pesticide treatments on weevil activity in the crown can be checked via a window. A window is created by removing palm fronds in the crown which then permits access to the crown so visual inspections for weevil activity can be conducted. Important: Always read and follow label instructions. When it comes to eliminating red palm weevil infestations, endotherapy is the most suitable treatment. The South American palm weevil is a type of beetle that first made its presence known in Southern California in 2011. Additionally, laboratory studies suggest thatRhynchophorusspecies of palm weevils have better survivorship when their environments are damp and humid. The best way to treat large palms for weevils is injection. When they hatch, hundreds of larvae in the form of big grubs begin feeding at the top of the tree, in the palm's heart. They are about 6mm . Once the damage is noticed, the palm is most likely beyond salvage. Adult weevils are large, black in color, and about 1.5 inches in length. First, you might see yellowing leaves. RPW adults are attracted by the pheromones and the plant material and fly into buckets. High levels of feeding damage to the apical meristem can result in palm death as frond and trunk growth originates from this region. The Palmetto Weevil (Rhynchophorus cruentatus) is native to Florida and is the largest known weevil in North America. RPWs are usually attracted to unhealthy palm trees, but they will often attack healthy palms too. What Are Pheromone Traps: Information On Pheromone Traps For Insects, Controlling Rot Diseases In Sago Palm Trees, What Is The Agave Snout Weevil: Tips On Controlling Snout Nosed Weevils On Agave, Gardening For Bees In Nebraska And West North Central Region, Ornamental Grasses Ohio Valley Gardeners Should Grow, Petunia Cold Hardiness: What Is The Cold Tolerance Of Petunias, Yellow Hosta Leaves Why Are Hosta Plant Leaves Turning Yellow, Yucca Leaf Curl: Tips On Caring For Curling Yucca Plants, Controlling Zucchini Insects: Learn About Zucchini Pests, Home & Garden Marketplace: Advertiser Info. A female can lay 250-300 eggs in her lifetime on cut or wounded palm-tree tissue. The first punch is a systemic insecticide treatment into the ground. Personal Website, 900 University Ave. : The invasion of California by the South American palm weevil is underway. Red Palm Weevil Notes Dan Gerling Adult Red Palm Weevil emerge from cocoons, and females can lay eggs for around 8 to 10 weeks. (B)SAPW life stages, from left to right, adult weevil, larva, cocoon, and pupa. Nematodes reside within the body of adult weevils and are deposited in palms when weevils feed, defecate, or lay eggs. (D)SAPW adult exhibiting uncharacteristic orange and black markings. (A)Soil injecting a systemic pesticide. For palms trees on private property, UH resident and tree advocate, Judy Schroeder, has negotiated a special price for UH residents with Aguilar Plant Care. In fact, some species are considered the most damaging insect pests of palms in the world. What is the Threat to California? Palm Arbor 3: 1-27. These fermentation odors (especially when coupled with aggregation pheromone) from feeding and other types of damage (e.g., pruning wounds or pathogen infections) attract weevils to palms which intensifies attacks. Agriculture and Natural Resources - University of California - UC Cooperative Extension | Agricultural Experiment Station It is also recommended to apply PHOSPHO-jet to help control any secondary disease pathogens and PALM-jet Mg to provide needed nutrients for overall plant health and vigor. In addition to pheromone monitoring, visual surveys of other palms in the area surrounding the find site in Laguna Beach were conducted. Mature weevil larvae may reach up to five inches in length prior to pupating. The larvae hatch after 2 to 5 days and bore into the trunk to feed on palm tissue. If meristematic tissue is destroyed, it results in the "crown" of the palm dying and this inability to produce new fronds gradually leads to palm death. Hodel, D.R., M.A. Rhynchophorus palmarum. Riverside, CA 92521, CNAS Dean's Office Palm weevil treatment involves a combination of control methods including removal of infected wood, applying insecticides, and trapping the adults. If you notice them early, treat the palm with insecticidal soup. The eggs dont damage the plants, nor do the weevil adults. is a destructive palm pest in its native and invaded ranges, where infestations and dead palms had been detected earlier (December 2010), L.A.'s palm trees are dying and it's changing the city's famous skyline, Invasive Bug Killing Palms Found in Valley, SoCal's Palm Trees Threatened by South American Weevil, Invasive Insect Threaens San Diego County's Palm Trees, Palm-Killing Weevil Poses Threat to Southern California Region, Scientists work to define threat from palm pest, California Today: An Invasive Beetle Threatens States Southern Palm Trees, Scientist work to define threat from palm pest. But two more disturbing palm weevil species, which are invasive to the U.S., include the red palm weevil (Rhynchophorus ferrugineus) and the South American palm weevil (Rhynchophorus palmarum). Details on making bucket trapsand loading them with aggregation pheromone, ethyl acetate synergist, and fermenting bait are available. 8Biological Control of SAPW Nematodes may reside inside tracheal sacs, part of the weevils tube-like breathing system, from where they can move to the ovipositor (i.e., egg laying tube) of female weevils. Department of Entomology, Insecticides are probably the most common control tool used against Red Palm Weevil, and can applied in a variety of ways for RPW suppression including applications as dusts, liquid sprays. (A)SAPW eggs on a US penny. The distribution of traps was as follows: (1) Alameda County 20 traps; (2) Imperial County 150 traps; (3) Los Angeles County 73 traps; (4) Orange County 200 traps; (5) Riverside County 210 traps; (6) San Bernardino County 25 traps; (7) San Diego County 200 traps; (8) Santa Barbara County 20 traps; (9) Santa Clara County 30 traps; (10) Santa Cruz County 10 traps; (11) Sonoma County 10 traps; (12) Ventura County 50 traps. Download the flyer from Aguilar Plant Care here. This method of eradicating red palm weevil is carried out in four steps: Let us explain them to you: A hole is bored in the trunk. Red palm weevil have several development stages: egg, 3 to 7 larval stages, pupa and adult. 5 times. Davey Resource Group used gray and green infrastructures to solve stormwater issues at the Graduate Conference Center in Ohio. : Are Californias Palms about to Face the Perfect Storm? "But it does take a commitment on the palm owner's part. Riverside, CA 92521, Vibrational Mating Calls of the Blue-Green Sharpshooter, in Tijuana Baja California Mexico in 2010, San Ysidro in southern San Diego County in 2011. Feeding damage leading to the death of infested palms is widely reported in areas invaded by this pest. The palm weevil is a serious pest of palms. Palm trees are great additions to your landscape, adding curb appeal and some greenery to regions of the country that can accommodate these tropical/subtropical plants. Applying systemic insecticides and injections to the crown, trunk, or soil can retain the health and vigor of your infected palm trees. Place these pheromones in a container together with insecticide to kill the weevils. mark.hoddle@ucr.edu Nematodes are deposited on palms in very close proximity to oviposition wounds females make when laying eggs. Backed by The Davey Institute, the industrys premier research and development laboratory, our team of experts share their knowledge on the most common topics and questions in arboriculture. Photo Credit: Treatment may last for thirty to forty-five minutes. Place the blanket over your palm loosely so that warm air rising from the soil stays underneath to keep the palm warmer than the outside air. It is likely that San Diego County was invaded by weevils that originated from Tijuana Mexico,where infestations and dead palms had been detected earlier (December 2010). Since red palm weevil larvae spend much of their lives inside the tissue of a palm, finding tunnels or frass (wood shavings) on the crown of the palms central growing point is usually how your local arborist will be able to detect the presence of these pests. Susceptibility of different life stages of red palm weevil, Rhynchophorus ferrugineus, to entomopathogenic nematodes . Anon. Another effective method, often used along with insecticide, is trapping the adult weevils. Weevil populations likely established in or around San Ysidro in 2014 or earlier. Occasionally, pupal cases will drop from heavily infested palms and accumulations on the ground can be observed. As is the case with many invasive vector-pathogen systems in California, the vector is detected first, then normally, several years later, the pathogen is recorded. Systemic pesticides are at present the most effective tool available for protecting and potentially curing palms of SAPW infestations. Mass trapping has been used to reduce Red Palm Weevil densities. The Red Palm Weevils collected in Laguna Beach have displayed a distinct red striped coloration which consists of the dorsal surfaces appearing uniformly dark brown to black, with a single, contrasting redstripe running the length of the pronotum. Are Weevils Destroying Palm Trees in San Diego? With jobs available throughout North America, Davey has an opportunity for you in the location you desire. 2023 The Davey Tree Expert Company. In San Diego County, the weevil has shown a very strong preference for attacking Canary Island date palms; however, the palm species host list is growing, and we expect this pest to attack . To do this properly: Use a synthetic blanket, burlap or landscape fabric. Riverside, CA 92521, CNAS Dean's Office Africa: Algeria, Egypt, Libya, Madagascar, Malta, Morocco. Farm2Ranch:Scientist work to define threat from palm pest This pest can be reared in the laboratory on sugar cane, and a variety of artificial diets. ), mango (Mangifera indica), banana (Musaspp. (Mark Hoddle/UCR) The weapon involves a pheromone specific to the South American palm weevil, a type of beetle capable of flying more than 15 miles in one day. RPW may establish readily in new areas because it has traveled with its food supply, or there are other ornamental or date palms nearby that it can infest once larvae finish developing and emerge as new adults that abandon their original host plant. Frass accumulating at points of injury or at the base of offshoots may also appear in infested trees. Survey efforts are underway around Laguna Beach to determine if an infestation of Red Palm Weevil exists, how widespread it is, and if it will be possible to contain and perhaps eradicate this highly destructive palm pest. Highly damaged areas take on a characteristic appearance as the crown tilts, collapses, and dies. From here they can spread into urban and agricultural areas. Coconut Pest Alert! (B)Applying a systemic pesticide to a palm trunk. Want to request a FREE consultation or speak to your Davey local office about your residential tree or lawn needs? We are experts at helping your trees thrive in our coastal landscape. Date palms, sabal palms, and Washingtonian palms are also susceptible to a much lesser extent to attack by the palmetto weevil. Palmageddon: The invasion of California by the South American palm weevil is underway. Perhaps global warming explains why it has found its way into North Carolina. Weevil larvae hatch from eggs and consume meristematic tissue. Davey uses cookies to make your experience a great one by providing us analytics so we can offer you the most relevant content. Copyright 2022 Arborjet, Inc. All Rights reserved. The weevil Rhynchophorus palmarum, also known as the American or black palm weevil, has wreaked havoc on San Diego County's Canary Island date palms ( Phoenix canariensis) over the past decade. Traps were monitored over 2011-2013 until Federal funding for the monitoring program expired. Sign up to get all the latest gardening tips! Our tree doctors are committed to helping take care of your trees and shrubs to ensure your property remains beautiful and healthy. It is when the weevils are in the larva stage that palm weevil damage occurs. Surveillance and Early Detection of Red Palm Weevil Dr. a.m. Oehlschlager The insect is attracted mostly to damaged or stressed trees. Red Palm Weevil is attacked by a variety of different natural enemies including parasites and small predators that attack weevil eggs, while bacteria, fungi, and nematodes can kill weevil larvae. Systemic pesticides applied as crown drenches can cure heavily infested palms allowing meristematic tissue to recover and new frond production results. Good sanitation practices are needed to prevent Red Palm Weevil spreading from infested palms. KQED, Deep Look:A Real Alien Invasion Is Coming to a Palm Tree Near You. Palms in the advanced stages of attack and mortality have a flattened top, and as the remaining halo of fronds that ring the top of the trunk dry down, the palm looks like a giant brown umbrella or mushroom. Chipping, burning, and burying infested material deeply can reduce the likelihood that Red Palm Weevil will emerge and escape from infested palms. As the infestation progresses, damaged palm material inside the palm will start fermenting and it acquires a characteristic odor. Invasive Palm Tree Pest: Palm Weevil Identification, Damage, & Management Methods. Typical treatment for palm scale is to repeatedly spray the palm tree leaves with horticultural oil or a mixture of equal parts rubbing alcohol and water mixed with some bleach-free dish soap. Adult weevils live for about 2 to 3 months feeding on palms, and going through several cycles of mating and egg laying before dying. If traps are placed too close to palms adults that are attracted to traps but are not caught may start infestations in the palm that is being monitored. A lot of these damage signs result from beetle larvae excavating tunnels throughout the palms tissue. Nematodes can also be found inR. palmarum frass(i.e., excrement). Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Palm weevils are invasive beetle species that pose a fairly serious threat to palm trees. This species of snout beetle has killed hundreds of Canary Island date palms since it was first detected in March 2016 in San Diego, California. Applying systematic insecticides to the soil helps to eliminate the weevils in the egg stage. Once larvae hatch and begin feeding on the palm heart, the tree dies. In a casual 8 hr driving survey across Tijuana approximately 125 dead Canary Islands date palms exhibiting damage typical ofR. palmarumwere found in residential areas. The enemy-release hypothesis is one explanation for explosive pest population growth and spread when an invasive organism establishes in a new area. The palm weevil is a large, black beetle with a long snout. Removal of infested, dying, or dead palms is expensive, potentially dangerous and should be undertaken by professional arborists. Feeding in this region can lead to trunk collapse and palm death. Monitoring for Red Palm Weevil Populations in California:In response to the RPW collection in Laguna Beach, state and federal survey crews deployed pheromone baited traps. Feeding by weevil larvae in the crown of palm trees, causes significant damage that may result in the death of meristematic tissues. Properly fertilizing and maintaining palms may help keep this weevil at bay. As prominent features in your landscape that add value as they grow healthy, the last thing you want is for your palm to suffer, looking wilted and worn out instead of green and vibrant. Once inside the bucket trap, the pesticide kills the weevils before they can escape. This damage can be confused with feeding by rats. However, flight mill studies indicate it is possible should weevils elect to do so and this could occur in areas where there are no suitable hosts to attack. Working unseen and deep inside the palm trunk, the weevil larvae tunnel and feed, eventually killing the palm. Feeding larvae cause significant damage to the apical meristem and when severe, palm death can result. Adult weevils are strong fliers and can fly up to 900m (~900 yards) at a time and they can move up to 7 km (~4.3 miles) in 3-5 days. Palm weevils are invasive insect species that pose a fairly serious threat to palm trees.
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