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. The pupa will molt one more time within the cocoon to reach the adult form which has wings and can fly. Detection of South American palm weevil (Rhynchophorus palmarum) in Texas. Nematodes reside within the body of adult weevils and are deposited in palms when weevils feed, defecate, or lay eggs. 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). 900 University Ave Palms are ubiquitous in the California landscape and they give urban and beach areas a distinct appearance that is strongly thought of as being southern Californian. 10Red Ring Nematode "It can cost upwards of $400 to $500 per treatment for the first palm, and then sometimes only $100 to $200 per palm after that if you have multiple palms on a site," he said. The larval stage lasts 1 to 3 weeks. 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. If the entire trunk is affected, you cannot save the tree. 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. 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. Subscribe to the "The Sapling," the Davey Blog's email newsletter, for the latest tips to keep your outdoor space in tip-top shape throughout the year. Unfortunately, no methods of biological control currently exist to control this pest. Adult weevils can be found wedged into cracks at the base of palm fronds. It prefers wounded or stressed sabal palms, Bismarck palms or Canary Island date palm. Feeding by weevil larvae in the crown of palm trees, causes significant damage that may result in the death of meristematic tissues. Red Palm Weevil, Trap and Lure Technical Information AgBio Inc Sclerotized mouth parts . Infokus, 89.3 KPCC:California's Palm Trees Under Attack Middle East: Bahrain, Georgia Palestine, Syria, Iran, Iraq, Israel, Jordan, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates. Control Options:Suppression of Red Palm Weevil infestations can be attempted in several ways. The pupalstage may last from 11 to 45 days. 3Palm Damage The larvae (grub worms) then feed into the trunk causing severe vascular damage over time that eventually results in death of the infested palm. (C)Adult SAPW next to a US quarter (top) and a US penny (bottom). We pride ourselves at Davey Tree on providing prompt, professional and personalized service from certified arborists that live, work and engage in your community. The larva hatches out of the eggs in a few days and bore into the living tissues of the tree. Properly fertilizing and maintaining palms may help keep this weevil at bay. KMIR News :Invasive Bug Killing Palms Found in Valley CISR/Mark Hoddle:Overview of the Red Palm Weevil, Article provided by:Nick Nisson,Donald Hodel, andMark S. Hoddle. In addition to dead palms, some living palms displayed spectacular levels of feeding damage to fronds. Windows can be useful for assessing weevil activity after pesticides treatments have been applied. The South American palm weevil a new threat to palms in California and the Southwest. This was the first record of this pest in the USA. Adult weevils live for about 2 to 3 months feeding on palms, and going through several cycles of mating and egg laying before dying. In just a few short years, the insect has infected 19 different species of Florida palm trees with lethal bronzing disease and lethal yellowing disease. Some estimates suggest that the ornamental palm industry in California is worth ~$70 million (US) per year. Traps should not be hung from palm trees or placed near (i.e., within 500 yards) palms of interest. 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. Department of Entomology, CAPCA Adviser 20 (2): 40-44. (A) The top of a male SAPW rostrum showing the dense comb of setae that characterizes this sex. We are experts at helping your trees thrive in our coastal landscape. With more than 13 million palms, Egypt's date production amounts to over 1 million tons per year. Some of the plants most susceptible to red palm weevil include: Early red palm weevil damage can be hard to spot. Giving your palm trees proper care includes understanding why their leaves may turn brown and how to best care for them. Movement of live ornamental palms out of infested areas should be avoided to reduce the chances of unintended weevil introductions into new areas. You can also wrap the trunk and foliage of palms for winter palm tree protection. RPW adults are attracted by the pheromones and the plant material and fly into buckets. From here they can spread into urban and agricultural areas. (A)Cutting fronds to make a window to view the palm crown. UCANR:El Picudo Rojo de las Palmeras Dissections of the 111 the adultR. palmarumcaptured in San Diego and Imperial counties failed to detect the presence of red ring nematode. By Andrew Porterfield The red palm weevil ( Rhynchophorus ferrugineus) is a common pest of palm trees in subtropical regions of the globe (and, for a brief time, in the United States ). One potential reason, amongst several, as to why non-native organisms become pests following introduction into a new area is the lack of population regulation provided by upper-trophic level organisms (i.e., natural enemies). The industry however has been facing severe problems caused. CISR Blog:The South American Palm Weevil Invasion in San Diego County, California, 900 University Ave. drhodel@ucdavis.edu, Mark Hoddle, Extension Specialist andDirector of Center for Invasive Species Research ABC7 News:SoCal's Palm Trees Threatened by South American Weevil In addition to pheromone monitoring, visual surveys of other palms in the area surrounding the find site in Laguna Beach were conducted. Eggs are then laid into this hole. This big beetle, 35 to 40mm long, also known as the Asian palm weevil is the most deadly pest for almost all palm tree species. Pheromone Trap Surveys forRhynchophorus palmarumin California. : The invasion of California by the South American palm weevil is underway. Weevil populations likely established in or around San Ysidro in 2014 or earlier. 2017 Arborjet, Inc. radiation dose, although there was no apparent effect on the F2 generation. This relatively soft and fleshy growing material is typically found in the crown or top part of the palm tree, and it is responsible for generating new fronds. 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. Adult weevils may acquire nematodes when feeding on infected palm material or nematodes may attach to the body surface of weevils. 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 . From vegetation management and asset management to make-ready engineering services, we can help you reach your goals with expert service and a commitment to quality. Africa: Algeria, Egypt, Libya, Madagascar, Malta, Morocco. Learn more about the common tree damage signs and how to manage Japanese Maple Scale. The common name, red ring nematode, comes from reddish lesions that form in infested stems and trunks. Cocoons tend to be wedged tightly in these tunnels and can be hard to extract. Establishment of National Date Palm Research Center Al-Hassa, Kingom of Saudi Arabia A small percentage of the adult population may have orange and black markings that are very similar to another notorious palm pest, the red palm weevil,Rhynchophorus ferrugineus. Eggs may be laid in wounds, cracks, and crevices in the trunk, from the collar region near the roots, up to the base of frond petioles and axils near the crown of the palm. (B)Applying a systemic pesticide to a palm trunk. Larvae feed within thesoft tissues of the meristem or leaf bases creating frass filled mines, enlarging and penetrating deep within the upper trunk areas as the larvae mature. A lot of these damage signs result from beetle larvae excavating tunnels throughout the palms tissue. From wetlands and streams to stormwater management and tree inventories, we offer turn-key solutions for clients nationwide. Good sanitation practices are needed to prevent Red Palm Weevil spreading from infested palms. Mature larvae construct a pupal chamber or cocoon made up of coarse palm fibers in which they pupate and occupy for approximately three to four weeks. The prepupal larva molts inside the cocoon and develops wing buds. Adult white pine weevil and adjacent puncture wounds. Riparian areas in California with susceptible palm species may provide good habitat for weevil populations to proliferate. 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. Rancho Coastal is a full service, licensed, bonded, and fully-insured tree care company based in San Diego. Occurrence and Damage of Red Palm Weevil in China Ren Li Spongy Moth, formerly known as Gypsy Moth. 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. (E)Canary Islands date palm showing recovery following a crown drench with a systemic insecticide. This weevil presents an enormous threat to the ornamental and edible date palm industries in California. 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. Retired, Donald Hodel,Environmental Horticulturist Like other species ofRhynchophorus, such as the red palm weevil,R. ferrugineus, and the palm weevilR. vulneratus,R. palmarumis a destructive palm pest in its native and invaded ranges. weevil form, with well-developed, curved snouts and clubbed antennae. 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. Looking for a rewarding career with opportunities for growth? 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. Contact one of our Davey Tree specialists for your residential, commercial, utility, or environmental needs. Eggs: After 48 hr of treatment the egg shell was completely This damage can be confused with feeding by rats. 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. Trunk injection of IMA-jet (Imidacloprid) will give both preventative and curative control providing there has not been extensive feeding damage to the palm. Traps were monitored over 2011-2013 until Federal funding for the monitoring program expired. The red palm weevil is reddish-brown, but since it can range from mostly red to entirely black, color alone hasnt been a great way of identifying the pest. These flies have a distribution that includes parts of the known range of SAPW (i.e., South America and the Caribbean.) 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. Riverside, CA 92521, CNAS Dean's Office Biological control is the use of natural enemies, like predators, parasites, and pathogens to kill a pest. The urban landscape in California is defined by palms, especially the ubiquitous Canary Islands date palm (Phoenix canariensis) and edible date palm (Phoenix dactylifera). Here's what causes palm tree leaves to turn brown and what you can do about it. on commercial properties across North America. Larvae that hatch from eggs, feed on the surrounding palm tissue and bore their way into the center of the palm. Operation Hours (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. In Saudi Arabia in 2022 . 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. College of Natural and Agricultural Sciences, Extension Specialist in biological control 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. The South American palm weevil and red ring nematode (should it establish in California) have the potential to cause significant damage to native and non-native palms in California. Adult SAPW are strong fliers and have the potential to disperse naturally over long distances. (2015) Detection of South American palm weevil (Rhynchophorus palmarum) in Arizona. 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. Anyone with a sago palm needs to know how to control palm weevils. You might also detect a fermented odor. Larval damage to leaf bases anywhere in the canopy revealed by routine trimming may also be a sign of feeding by young Red Palm Weevil larvae. RPWs are usually attracted to unhealthy palm trees, but they will often attack healthy palms too. The ring applicator has an overall power of 12 kW and a vertical range of 40 cm. Traps are not 100% efficient in capturing weevils. Distressed palm trees are most vulnerable to this damaging insect which makes transplanted and environmentally stressed palms more susceptible to attack. County of San Diego:Evil Weevil Threatening Date Palm Trees, Invasive.org:South American Palm Weevil 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. If the palm is infested, Phoemyc can be applied to the plant using a ring applicator. Adult weevils have been recorded feeding on ripe fruit of non-palm hosts, including avocados (Persea americana), pineapple (Ananas comosus), custard apple (Annona reticulata), breadfruit (Artocarpus altilis), papaya (Carica papaya), citrus (Citrusspp. Palm weevil treatment involves a combination of control methods including removal of infected wood, applying insecticides, and trapping the adults. Download the flyer from Aguilar Plant Care here. Department of Entomology, Neither the stressed palm odors or the weevil aggregation pheromone are very effective on their own. Details on making bucket trapsand loading them with aggregation pheromone, ethyl acetate synergist, and fermenting bait are available. Coloration inRhyncophorus ferrugineusis extremely variable and has historically led to the erroneous classification of color-defined polymorphs (variants) as distinct species. The life cycle from egg to adult is approximately 84 days which results in long feeding periods. Saddleback Caterpillar Feeding on the underside of the palm leaves, Saddleback Caterpillar chews large holes in the foliage. Distribution:The Red Palm Weevil is native to Southeast Asia and is known from the following regions: Economic Damage:Red Palm Weevil is widely considered to be the most damaging insect pest of palms in the world. It is the most recommended preventive treatment. Reduced population densities could slow weevil spread and economic damage. (B)The exposed crown after the window was cut. Control of red palm weevil in the Algarve overview Pesticide pumps and sprayers Chemical control; Page updated February 28, 2014 Despite a lot of effort, I've been unable to get really reliable information on best practice for pesticide application for prevention of red palm weevil , Rhynchophorus ferrugineus Olivier. The effectiveness of chemical treatment rapidly declines after a tree is infested with SAPW but it is difficult to detect SAPW when a palm is initially attacked. (B)Infested palm shown in (A) being dropped. High levels of feeding damage to the apical meristem can result in palm death as frond and trunk growth originates from this region. After the mating process the female deposits her eggs at the base of the palm. DOC5:Red Pam Weevil Plague Documentary, CBS Evening News:Red Palm Weevils make California Gardeners see Red In this way, adult boll weevils are captured. Farm Advisor:Palmageddon: The Invasion of California by the South American Palm Weevil The best way to treat large palms for weevils is injection. A palm that is completely overrun may have no hope of survival, and will need to be removed, and destroyed, entirely. Entomology and Nematology Department - University of Florida, Institute . In this instance, aggregation pheromones are loaded into bucket traps along with palm material and granular insecticides. AdultR. palmarumspread (i.e., vector) juvenile stages ofred ring nematode. The South American palm weevil (Rhynchophorus palmarum) is one of the most invasive pests in California. Identification: Adult Red Palm Weevils are very large beetles, attaining body lengths, including the rostrum of 35 to 40mm (1.4-1.6 inches). Personal Website, 900 University Ave. Red Palm Weevils make California gardeners See red, Red Palm Weevil spotted in Southern California, alarming palm tree growers and scientist, Surveillance and Early Detection of Red Palm Weevil, Red Palm Weevil, Trap and Lure Technical Information, Biology and Management of Red Palm Weevil in Saudi Arabia, Advances in the Management of the Red Palm Weevil in Spain, Occurrence and Damage of Red Palm Weevil in China, Biology and Management of the Red Palm Weevil: India, Establishment of National Date Palm Research Center, Pheromone Traps for the Management of Red Palm Weevil, Crews Deal with Discovery of Destructive Weevil in Orange County, Pest Threatens Southern California's Iconic Palm Trees, Time for a 'Bug Mac'? Adults can be up to 1 " in length. 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. In 3 rd group 30 trees were divided into 3 groups each containing 10 tr ees , . When you want to remove weevils on sago palms, the first thing to do is to remove the dead parts of the tree. It was first collected from infested Canary Islands date palms (Phoenix canariensis)in Tijuana Baja California Mexico in 2010. Biology and Management of Red Palm Weevil in Saudi Arabia Polana SPV Vidyasagar View our Privacy Policy for more information. Sign up for our newsletter. Weevils can potentially be moved accidentally by humans over long distances inside infested palms. 2012. Survey responses help southern California scientists collect data on this new pest and document it's affects on local palms. Riverside, CA 92521, Department of Entomology Director of the Center for Invasive Species Research The sex ratio is slightly biased towards females (1 male to about 1.2 females). When adult weevils fly to another palm they may carry these hitch hiking nematodes on the outside of their bodies. Adems, en diciembre de 1996 se aprob otra donacin para luchar contra los gorgojos rojos , los barrenillos y las larvas de las palmeras de dtiles con nematodos entomopatgenos en la Pennsula Arbiga. Ohara. Anon. Corky's Pest Control has developed an innovative treatment to prevent weevils from attacking expensive palm trees like the Canary Island Date Palm. Hodel, D.R., M.A. Working unseen and deep inside the palm trunk, the weevil larvae tunnel and feed, eventually killing the palm. With funding from the USDA-APHIS, the California Department of Food and Agriculture (CDFA) deployed 998 bucket traps across 12 Counties with commercial palm nurseries. Contact insecticides (i.e., pesticides that either kill on contact or leave a dry external residue that is lethal upon contact) can be applied to palm fronds or pruning wounds to kill adult weevils attracted to these substrates. Palm weevils are invasive beetle species that pose a fairly serious threat to palm trees. The entire life cycle, egg to adult, can take about 3-4 months to complete. The cabbage palm caterpillar, cabbage palm worm, or palmetto borer, Litoprosopus futilis, is a sometimes a serious pest in Florida where cabbage palm flowers supply nectar that bees use to make cabbage palm honey. mark.hoddle@ucr.edu, Supervisory Project Scientist Native to southeast Asia, it is the pest that causes more damage to palms than any other. Red palm weevil (Rhynchophorus ferrugineus) is also known as Asian palm weevil or Sago weevil. Trunk injections or soil applications of systemic insecticides that move inside the palm poisoning weevil larvae and adults may also be effective. KPBS:Invasive Insect Threaens San Diego County's Palm Trees In fact, some species are considered the most damaging insect pests of palms in the world. Plus, receive a free instant download of our landscape seasonal checklists when you sign up! 2017. When females use the ovipositor to lay eggs into wounds they have chewed into palms, nematodes are also deposited into the opening. Palm weevil treatment involves a combination of control methods including removal of infected wood, applying insecticides, and trapping the adults. Dieback in the apical (newest, uppermost, or center) leaves in the canopy is a common symptom of larval damage to the meristem tissue and should be investigated for RPW. Commercial date production is impacted in areas where RPW is established, resulting in tree death or reduced vigor in infested date palms. However, neither approach is recommended for homeowners. SAPW larvae dont drill deeply into the palm trunk and infestations are typically limited to the top 25% (or less) of the palm. 900 University Ave Several natural enemies of SAPW are known, but one group of natural enemies, parasitic flies, in the genusBillaea(formerlyParatheresia) (Diptera: Tachinidae), appear to be exceptionally promising candidates for use in a classical biological control program targeting SAPW in California. However, in combination they can be powerful in attracting weevils to traps. Adult weevils are sexually dimorphic. South American palm weevil (SAPW),Rhynchophorus palmarum(L.) (Coleoptera: Curculionidae), is native to parts of Mexico, Central and South America, and the Caribbean. LA Times:Red Palm Weevil spotted in Southern California, alarming palm tree growers and scientist. Phoemyc is considered the best insecticide for red palm weevil. Geology Building, Room 2258 (B) The top side of the female rostrum lacks setae which makes distinguishing between sexes easy to do. Subsequent population control may result when host specific efficacious natural enemies are re-associated with the target pest via a classical biological control program. Surveys forR. palmarumactivity in Tijuana Mexico in May 2016 revealed large numbers of dead Canary Islands date palms. In Egypt, it has been estimated that RPW can have up to 21 generations per year. and C.D. The South American palm weevil is native to Mexico, Central America, and South America. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. 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. The Situation:During August 2010, arborists removed a large dying Canary Island date palm (Phoenix canariensis) from a residence in the city of Laguna Beach, Orange County, California and reported finding adult weevils and weevil larvae with associated larval feeding damage in the top portions of the palm trunk. 7Chemical Control Nematodes are deposited on palms in very close proximity to oviposition wounds females make when laying eggs. Lifecycle of the red palm weevil Red palm weevil attack young trees through the trunk and more established trees through the crown. 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. CISR:Has the South American Palm Weevil,Rhynchophorus palmarum,Established in Southern California? Mature weevil larvae may reach up to five inches in length prior to pupating. Detection ofR. palmarumin California was officially confirmed on9 May 2011 by USDA and seven additional detections were made over July August 2011. "But it does take a commitment on the palm owner's part. The best recourse is to cut down infested palms and destroy them before adults emerge from the tree. The United States: Laguna Beach, Orange County, California, 2023 Regents of the University of California. The primary hosts of the Red Palm Weevil include 24 species of palms in 14 genera, including most of the common landscape palms found in California. Adult females are capable of flying long distances non-stop. Although this bug is not small in size, an adult can measure about 1 1/2 inches . NPR:Time for a 'Bug Mac'? CONTACT YOUR LOCAL DAVEY ARBORIST FOR A FREE TREE INSPECTION. Feeding in this region can lead to trunk collapse and palm death. Larvae may attain lengths greater than 50 mm (2 inches). Control Options: Suppression of Red Palm Weevil infestations can be attempted in several ways. Feeding by weevil larvae in the crown of palm trees, causes significant damage that may result in the death of meristematic tissues. (D)Applying a contact insecticide to palm foliage. 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. Males can be separated from females by the presence of a beard or comb of hairs (i.e., setae) on the dorsal (i.e., top) side of the rostrum. Systemic pesticides can be applied as soil drenches, soil injections, trunk sprays or paints, trunk injections, or as drenches applied to the crown. Please check with your state or local extension service to ensure registration status. New York Times:"Waiter, there's soup in my bug" The list of suceptible palms is a little longer for south Florida. Female weevils use their rostrum or snout (this is the long nose on the head of the weevil) to drill holes into palm material. CISR/Dr. Trapping programs forR. palmaruminAlamo Texas andYuma Arizona resulted in detections in both states on 3 May 2012 and 20 May 2015, respectively. Classical biological control is the intentional introduction of a natural enemy (e.g., parasitoid, predator, or pathogen) of an invasive pest with the goal of reducing pest populations to less damaging levels in the invaded area. This should be arranged with a professional tree removal service company. The life cycle of the palm weevil begins when the adult female weevils lay eggs on or near the sago palm trees. 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. The Palmetto Weevil (Rhynchophorus cruentatus) is native to Florida and is the largest known weevil in North America. 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. A Real Alien Invasion Is Coming to a Palm Tree Near You. Herbicide treatment was carried out using glyphosate in the palm circle (1.50 l ha 1 yr 1, split into four applications per year) and in the inter-rows (0.75 l ha 1 yr 1, split into . University of California, Riverside Weevils were later captured in monitoring traps inSan Ysidro in southern San Diego County in 2011(~ 5 miles north of Tijuana). Oceania: Papua New Guinea, Samoa, and the Solomon Islands. This damage provides entry for nematodes into palms and immature nematodes mature and reproduce inside palms. Larvae and adults were offered their natural food as tissue cuts from inside the same .