Guide at 3) Inorganic (Chemical) Control Methods If every option fails, you can use chemical pesticides as a last resort. A winter with temperatures below freezing can also effectively control the corn flea beetle population. groves@entomology.wisc.edu You can also place yellow sticky traps around the host plant. The tiny larvae feed on the roots of the plant, Flea beetles over-winter as adults, so high populations in the fall are a good indicator of expected flea beetle activity in the spring. If you do use pesticides, read the label instructions very carefully. R. L. Hines and W. D. Hutchison If you prefer dusts, Sevin Insect Killer Dust Ready to Use . in your area, add the average monthly temperatures (F) for Terms. Controlling Leafminers: Monitoring leafminer populations early in the season allows action to be taken early on if needed. It will also feed on shepherdspurse, wild Disability-related accessibility issue? ai per cwt. The damage is unique and similar for nearly all species-a series of small (usually <1/8") feeding holes on the leaves. For the recipe, combine 5 tablespoons of liquid soap, one cup of oil, and a gallon of water. for insecticide recommendations for vegetable Predators, parasites and diseases can be important in regulating insect populations. Michael Bush, WSU Extension Alder flea beetle ( Altica ambiens) Pest description and damage Adults are dark, shiny blue, and about 0.25 inch long. each wing cover. Use Neem oil for organic prevention and treatment. r>K]aicFP83rv))c/"|^ Vh1q9devy^__]f/~;~~n However, based on our knowledge of commercially-available insect-parasitic nematodes, these may control flea beetle larvae. from hibernation in late May and feed on weeds and other Shothole wounds produced by adults of European elm flea weevil. up as black spots on peeled potatoes. Most adult flea beetle damage is unique in appearance. (Photo Credit: John Obermeyer). They pupate in earthen cells for 11-13 days before emerging as adults. Previous research has shown that defoliating the crop during the winter has a negligible impact on yield, as long as it occurs before stem extension. Weed for control of adults to prevent oviposition. This work is supported in part by Extension Implementation Grant 2021-70006-35390 / IND90001518G-1027053 from the USDA National Institute of Food and Agriculture. making slow growth. Botanical pesticides are one of the most effective means of getting rid of flea beetles, but they should be used as a last resort. The palestriped flea beetle has a broad white stripe down each brown wing. MobileMenuBar. Corn flea beetle damage on corn leaf If you are interested in getting involved in a trial this winter, you could choose the defoliation method that best suits your farm, such as topping, grazing with livestock, or rolling the crop, and carry it out from December to stem extension (usually around mid-February to mid-March). These insects derive their name from their well-developed hind legs; when disturbed they jump like fleas. A few spaced-out applications of this will eradicate the majority of flea beetles in . shiny black beetles Adults are active and jump when disturbed Pest Beetle Control With Natural Solutions. for commercial growers, crop rotation may help reduce flea After feeding 3-4 weeks larvae drop to the ground and pupate Water deters adult flea beetles, and any watering should be done in mid-day. This wasp kills the adult flea beetle. Once beetles are actively feeding in these trap crops, they can be sprayed with a labeled insecticide - minimizing the development of economically damaging infestations in the primary cole crop. in southern Indiana can expect more serious problems than It is almost 1/4 inch long, has Also, flea year, the first developing on weeds and the second developing They vary in color from black to metallic gray. At the first sign of flea beetles in your garden, turn to a trusted pesticide such as Sevin brand for help. Univ. each wing cover. weed hosts before it becomes apparent on crops. Shake well and spray on plants. . ai cwt). Are you tired of the tiny holes in your leafy greens? This seed treatment is applied to the seed in a slurry containing fungicides and is labeled up to 13.3 oz ai cwt. Treatment on all cole crops is recommended when 10-20% of a stand shows feeding damage. suffer from water loss and reduced photosynthetic capability. There are many different species of flea beetles which feed on brassicas and these range in colour from shiny metallic black (turnip flea beetles, P. cruciferae, P. nigripes) to black with yellow stripes along each wing case (large striped flea beetle, P. nemorum). Adults emerge from the soil in mid-spring Eggs hatch in 7-14 days and larvae feed on various plant parts until fully grown. The damage is unique and similar for nearly all species-a series of small (usually <1/8") feeding holes on the leaves. Always consider an integrated approach with preventive measures together with . Flea Potato flea beetles are readily controlled with a wide variety of insecticides . Common Wisconsin flea beetles include the cruicfer, eggplant, horseradish, pale-striped, potato, spinach, and striped varieties. In early spring the adults become active and the female flea beetle lays her eggs in small holes in roots or soil. 1980 Folwell Avenue but when alarmed they can jump a considerable distance. Fax: (608) 262-3322 Figure 1. Soil applied insecticides and seed treatment products are also available to control both larvae and adults of flea beetles. A new field lab is being set up to run alongside the replicated, controlled research plots at ADAS to see if this technique can significantly reduce CSFB burden and improve yields in a real farm setting. Soil-applied insecticides will provide season long control. Insecticides with a longer persistence or residual will work best in most situations. To be effective, the trap crop needs to be planted well before the primary crop is planted, since adult flea beetles will be attracted to the tallest, earliest crops available. Feeding damage by the adult sweetpotato flea beetle Usually, growers diatomaceous earth, kaolin clay) but most can kill flea beetles. however, among those insecticides there is a considerable Foliar insecticides can provide quick control but may also disrupt natural enemies of other pests of cole crops. Ch.8 of "Vegetable Insect Management with Emphasis on the Midwest" Meister Publishing Co. Willoughby, Ohio. gallon of water and spray all leaf surfaces until soaked wet. ), shiny black beetles that produce window panes on leaf surfaces. A straight, broad, yellow stripe runs down Larvae are black and about 0.25 inch long at maturity. This will have a desiccating effect on pests. The adult is shiny black, about They are capable of destroying enough foliage on seedlings to kill the plant. Q}gO?#-_<9_ln?C]BiNOu0??_2_ra6*MB|=l_Y{4w^gj{a}??sUw_m{,r_X?VN~ 1?w~/3yW6E|\?1|~r@&;9dVK}_^^v/KV Covering plants with horticultural fleece or small mesh netting will help reduce damage by excluding the adult beetles. You can also use a vacuum cleaner to take the pest out of the foliage. transmit a bacterium that causes Stewarts wilt. Commercial mint producers may use malathion at 1-1/2 Larval feeding on potato tubers may cause roughness, pits, Most species of flea beetles emerge Other Cultural Methods 1.) Chemical control is often necessary with crops that have edible heads, such as broccoli and cauliflower. https://ag.purdue.edu/hla/Hort/Pages/sfg_sprayguide.aspx. of Wisconsin-Madison Adults also may feed on morning glory and In fields where a susceptible variety is grown, check them Utilize cultural control methods to potentially reduce flea beetle damage, including: Creating a less favourable microclimate for flea beetles (ex. Leave it until it is full of beetles. Department of Entomology, University of Minnesota. There are usually two generations of spinach flea beetles per This aromatic substance has been a long-debated topic regarding its effectiveness for repelling bugs. Flea beetle adults can be very destructive to young plants, often defoliating and killing them. a) Potato Flea Beetle: Epitrix cucumeris (Harris); b) Corn Flea Beetle: Chaetocnema After hatching, the Host plants of many of the flea beetles are easily identified by their common names. Some insecticides can act as a barrier or . Elm leaf beetles ( Xanthogaleruca luteola) are common insects that chew leaves of elm trees (Figure 1). Test out the mixture on a leaf of the plant, let it sit overnight, then spray the rest of the plant if you don't notice any adverse effects. Adult flea beetles range in size from about 1/10 1/5 inch. They are all characterized by enlarged hind legs for jumping. New researchfound a non-chemical control method resulted in 30-60% larvae reductions. serious pest when growing conditions are poor and plants are Until we can develop alternative strategies such as host plant resistance, growers for now are relying on chemical seed treatments for control of flea beetles." Hairy canola shows promiseAs part of an integrated flea beetle management strategy, plant molecular breeders and entomologists began working on developing canola germplasm with . laboratory and field studies on the chemical control of the crucifer flea beetle, phyllotreta cruciferae (coleoptera: chrysomelidae), on cruciferous crops in ontario12 - volume 110 issue 8 read the label and insure that use of the compound is registered for alder flea beetle control. Chemical Control. If severe, beetle feeding can kill the seedlings even before they emerge. Office: (608) 262-3229 in late April or early May, often causing considerable injury. Cookie Settings. also vectors of several diseases of potato. However, make sure to reapply after rain to ensure its proper functioning. (Photo Credit: John Obermeyer), Flea Beetles Found in Indiana. This option is recommended when flea beetle populations exceed threshold levels, particularly early in the season (see table). They can be used to control a broad range of soil-inhabiting insects, flea beetles, and above-ground insects in their soil-inhabiting stage of life. If the sum is between 90 and 100, then epidemics In addition, several other species of flea beetles attack a variety of vegetable crops, including: the potato flea beetle,Epitrixcucumeris, corn flea beetle,Chaetocnema pulicaria, and the spinach flea beetle,Disonycha xanthomelas. Their feeding causes a "shothole" appearance to the plants. Most importantly, corn flea beetle can Adult cabbage stem flea beetle, Psylliodes chrysocephala, chew holes in cotyledons and early true leaves, giving rise to 'shot-holing' symptoms, which can result in stunting and poor plant vigour. is that caused by the corn flea beetle, which eats the plant Colorado potato beetle larvae feeding on eggplant foliage. Before you plant your main crop, plant a highly favored trap crop such as radish, to attract flea beetles away from the main crop. To determine the potential for wilt problems Flea beetle adults are from 0.06 to 0.12 inch (1.5-3 mm) long. Flea beetlesare occasional pests on cole crops most often inflicting significant damage on early-planted crops. This is understandable as adult feeding is easily seen and severe pressure could result in the loss of the crop. inch) in a leaf, moving a short distance, then chewing another Order or download materials from edustore.purdue.edu, Purdue Extension Entomology, 901 West State Street, West Lafayette, IN 47907 USA, (765) 494-4554, Department of Entomology | College of Agriculture | Extension, &+#=wn13}. The 7-day harvest 1630 Linden Drive For example, both the tuber flea beetle and western potato flea beetle may look metallic brown, black, or . Here's how: The female wasp uses her ovipositor to lay eggs just under the skin of an unlucky flea beetle. Flea beetles overwinter as adults in the soil or beneath plant debris. crops. regularly check susceptible plants, especially when they are and feed on young foliage of these crops. As part of our 'reducing the impact of cabbage stem flea beetle' project, researchers are using water traps and sticky traps (1 metre from the ground) to trap beetles during autumn 2022 at eight sites. Here are 11 key elements: 1. pulicaria (Melsheimer); c) Grape Flea Beetle: Altica chalybea (Illiger); d) Red-Headed Flea Beetle: Systena Recent warm autumns and winters have heightened the problem by allowing adults to continue egg-laying, resulting in larger larval populations. Other Reading Berryman, A.A. 1989. Impact of defoliation in December 2016, or January or March 2017 on numbers of CSFB larvae in oilseed rape plants at ADAS Boxworth. For chemical control, insecticides that have carbaryl, bifenthrin, spinosad, or permethrin have been shown to have effective results. Not only is the adult flea beetle killed with the emergence ofM. vittatae, but the larval wasp sterilizes the female flea beetle while developing in her body. These work to poison the beetles after the spinosad is consumed on the plant matter, so it takes a day or two before the beetles die. If needed, the initial foliar application usually is when 50 to 66% of potato plants have emerged. in the leaf. on a regular basis if moderate or severe disease pressure is brown and die. 1/16 inch) insect that feeds on all types of corn. early sweet potato foliage, appears as narrow grooves in the Striped Flea Beetle commonly attacks cruciferous plants Increasing seeding rates can help reduce the impact of flea beetle damage. Corn flea beetle feeds by stripping Use soap As with many pests, soap is poisonous to flea beetles, so spraying a soap and water solution (often called insecticidal soap) on your plants can help control flea beetle populations. Potato Flea Beetle is black and 1/16 inch long and is one Field scouting for flea beetles is important. with a darker brown head and black eyes. 1/16 inch long), bronze-black with yellowish legs and antennae. Systena blanda (Melsheimer); g) Striped Flea Beetle: Phyllotreta striolata (Fabricius); h) Spinach Flea Beetle Crop rotation is not an effective means of controlling flea beetles; adults over-winter inside and outside of the cropped areas and are capable of long range migration. These pits show Flea beetles are an early-season pest commonly found on all members of the cole crop group, as well as spinach, beets, potatoes, and eggplant. @Wq/&nWv | ^@j;gquDCfoDb+k+y"O}\{^\B+tF$.lnl~ kli;{ other plants. See ID-56, Midwest Vegetable Production Guide at https:// Therefore, it is very important to entm.purdue.edu/publications/E-21/E-21.pdf, An equal access/equal opportunity university. years. The best way to control flea beetles is not to let them gain a foothold in your garden in the first place. Injury done by the adults appears as pits or Badly damaged leaves turn on beets, chickweed, lambsquarter, and many other weeds. Physical removal of leafminer eggs should be done when eggs are spotted. on spinach and beets. parts of Indiana. New research found a non-chemical control method resulted in 30-60% larvae reductions. Chemical Control: Imidacloprid (Gaucho 480 at 8.0 to 10.0 oz. December, January, and February. Position it on the surface. Stewart's wilt Adults chew holes in leaves while the larvae feed in groups and skeletonize foliage of alder, poplar, willow dogwood and other hosts. Try it on your farm. A little Safer Soap and Captain J. The invention discloses a kind of rape flea beetle chemical prevention and control method, the method comprises the following steps: step one, the preparation of agricultural chemicals; Step 2, seed carries out dressing Dressing; Step 3, the selection of experimental field and the sowing of capsuled seed; Step 4, the investigation of control efficiency and mathematical statistics.The present . If your soil has a long history of diseases, you have to be more diligent. in the seedling stage. The trap crop does not need to be very large(e.g., 1% of anticipated acreage) and is usually planted along a field edge. A number of chemicals are registered for controlling this beetle on potato ( See Tables 1-2). Egg-laying occurs at the start of the summer once the adult beetles have had enough time to feed on plant material. Adult flea beetles cause the most damage by feeding on cotyledons, stems, and foliage. holes in the leaves. The major flea beetle pests in organic brassicas and solanaceous crops in North America are listed in Tables 1 and 2, and images of adults are shown in Figures 2 and 3. damage gives plants a greyish appearance. Adults of some flea beetle species can be difficult to tell apart. Common name Amount per acre** REI . Spray the mixture on the foliage of garden plants . Flea beetles can overwinter on weed hosts surrounding the field, on residues of a previous tomato crop, or in the soil if the previous crop was a . They jump using broad hind legs that have hard coverings. Typical flea beetle damage when high numbers of flea beetles are present on plants and threaten injury insecticides are usually the most effective means to manage the problem (table 2). some flea beetle products act to repel flea beetle feeding (e.g. Common Host Plant(s): Tomato, pepper, cabbage and . Treatment may be needed sooner where cole crops are started from seed as heavy infestions will destroy seedlings before they emerge. Due to the high mobility of flea beetles, chemical control can be challenging. of our common species. If the sum is greater than Come along to a kick-off meeting to hear more about the research to date and the field lab:From 11am,11 Dec '18 | ADAS, Boxworth, Cambs |Book Now. Floating row covers can prevent adults from feeding on leaves and laying eggs on the crop. Most flea beetles hibernate under plant residues, in the soil or on weeds around fields. Alcohol and Soap Spray. Doing so increases larval mortality by exposing them to cold conditions and predation. Palestriped Flea Beetle feeds on cabbage, beans, There are usually 1 to 2 generations per year. . Insect repellents containing hot pepper or garlic may also provide some control. Given their mobility, you will be looking for feeding damage. FemaleM. vittataecan lay fertile eggs without mating; therefore, maleM. vittataeare very rare. Coffee grounds for flea beetles. brown larvae with black spots, feed extensively on the leaves. 4 0 obj Complete Listing of Entomology Publications, https://ag.purdue.edu/hla/Hort/Pages/sfg_sprayguide.aspx, https://extension. standing stubble or presence of residue) in direct seeded crops may reduce injury. They feed by chewing a small hole (often smaller than 1/8 Coffee grounds have been reported to work as a flea beetle repellent. Several species of flea beetles are common in Indiana, READ AND FOLLOW ALL LABEL INSTRUCTIONS. mustard, and other weeds. Spinach Flea Beetle is easily recognized and is the largest Most plants can tolerate considerable flea beetle feeding. Crops grown for their foliage such as kale, bok choy, spinach, or mustards may be rendered unmarketable by flea beetle damage. x[lv>c(/g@> (Z1rZmEDGw{>?~_O?qz_d?Oc~c`__~_Y]~_w7q9k=Nn}/|wxGquolB8Hgv:oO?)_~p/kY{9o? The adults are 2-3 mm long and the larvae are white with a brown head and 3 . populations. Identification Small (2- 3 mm, 1/12- 1/8 in.) Sustainable Agriculture A program of the National Center for Appropriate Technology 1-800-346-9140 www.attra.ncat.org Flea Beetle: Organic Control Options. These will give you the control that you need early in the season. Transplants can with stand more damage than plants started from seed. doing only minor damage to edible crops. Once hatched, larvae munch on plant roots. With the loss of neonicotinoid seed treatments, oilseed rape growers across the country have become concerned about the lack of effective chemical control options for cabbage stem flea beetle (CSFB). Biological control of flea beetle using natural enemies . Soil-applied insecticides will provide season long control. Please contact us at entmwebmaster@purdue.edu so we can help. Larvae of the horseradish flea beetle also mine the stem and leaf veins. Feeding damage and beetle populations can be spotty across a field (or along field edges) so spot-treatments within fields can be effective, reducing insecticide use and costs. In addition, many are vectors of plant pathogens. Charity registered in England and Wales no 206862, in Scotland no SC039168. Adults lay eggs in the soil at the base of host plants in May. Forest . Chemical Control: Treat with a registered insecticide when insects appear in damaging numbers. do not. Dr Sacha White is senior research entomologist at ADAS and specialises in developing integrated pest management programmes (IPM) for arable pests. The flea beetles can locate, attack, and quickly injure or destroy seedlings shortly after emergence making them extremely difficult to control. . This material may be available in alternative formats. black with a reddish-yellow head. On close inspection they are slightly hairy and the wing covers are not shiny as occurs on many other common flea beetles (e.g., western black flea beetle on cabbage family plants). Corn Flea Beetle is a black, pinhead-sized (about The Minn. Extension IPM Program is a collaboration of University of Minnesota Extension & the College of Food, Agriculture, and Natural Resource Sciences (CFANS). Active, hops away when disturbed. In short, there is no best way to get rid of them. Cultural Control. Apply it around the base and also on the crops, covering the entire plant, twice or thrice a week. Flea beetle adults will be attracted to the earliest and tallest plants and can be controlled in trap crops with insecticides or physical removal (e.g., bug vacuum or harvesting). Organic Flea Beetle Control. Typically during late April, May or June when temperatures reach 57 degrees Fahrenheit. in the soil. However, given that larvae spend about six months in the plants at a critical growth stage, we believe that they can have a significant impact on crop development and yield, and may be in part responsible for preventing rape varieties from achieving their true yield potential. Use 70% Neem Oil to Kill Flea Beetles Neem oil spray comes in the least toxic chemicals with excellent benefits. ]L{XlvyA^h"7^ra3^f+ Diatomaceous earth (DE) can effectively control several plant pests including flea beetles. It is the policy of the Purdue University Cooperative Extension Service that all persons have equal opportunity and access to its educational programs, services, activities, and facilities without regard to race, religion, color, sex, age, national origin or ancestry, marital status, parental status, sexual orientation, disability or status as a veteran. With the loss of neonicotinoid seed treatments, oilseed rape growers across the country have become concerned about the lack of effective chemical control options for cabbage stem flea beetle (CSFB). less than 6 inches tall. An adult . seriously injured crops before they are detected or the The eggs are laid under bark on the vines. Search entire site. manually remove weeds around the garden to limit food sources for the flea beetles. Biological Control. crops are grown in the same area year after year. of moderate severity are possible. growers in the northern part of the state. cause leaves to dry up and fall from the plants, especially in hot 70% Neem Oil is approved for organic use and can be sprayed on vegetables, fruit trees and flowers to kill eggs, larvae and adult insects. Purdue University is an Affirmative Action institution. on sunflower, morning glory, jimson weed, and lambsquarter. . Microctonus vittataeMuesebeck is a native braconid wasp found more commonly in the eastern half of the U.S. Follow all label Sweet corn varieties vary greatly in their susceptibility to spray a mixture of neem oil and water on all affected plant surfaces. Controlling Flea Beetles Physical barriers such as row covers are safe and easy methods of controlling flea beetles. Bio / CV, Adapted from UW-Extension publication HXT1106 written by Karen Delahaut with updates by David Lowenstein and Russell Groves, Degree days for fruit and vegetable pests (XHT1087-2005), Insect Pest Management for Greenhouses (A3744), Commercial Vegetable Production in Wisconsin (A3422), Biological Control of Insects and Mites (A3842), Biological Control of Greenhouse Pests (NCR58), Managing Insects in the Home Vegetable Garden (A2088), Wisconsin Vegetable Disease & Insect Forecasting Network (VDIFN), cabbage and other crucifers including horseradish, dark brown with 2 broad white stripes down its back; 1/6, greenish-black with a yellow thorax; 1/5, black with 2 crooked yellow strips running down its back; 1/12, Treat when beetles cause stand reduction on small plants, Treat only if beetles are found in high numbers early in the season. pints per acre after cutting and removal of crop from the field The adults feed on the foliage of a variety of plants, including onion, garlic, melons, and beans. Madison, WI 53706 their enlarged hind legs allow them to jump like fleas from -Warning-remember, when using pesticides, always read and follow the label! Chemical Control. Sevin Insect Killer Ready to Use 2 kills flea beetles on listed vegetables on contact to help prevent damage to tender seedlings and maturing plants at the first sign of trouble. It is because, Black, dark blue, brown, or striped beetles; about 1/16-inch long. Diatomaceous earth kills the flea beetle generations by puncturing their outer body covering when insects crawl over it. beetles are small, hard-shelled insects, so named because Mix 1 oz. Commercially available nematodes that feed on flea beetle eggs, larvae, and pupae are available. Quite a bit of research has been done in search of reliable organic controls for crucifer flea beetles. beetles are not difficult to control, but often they will have already . Generally, flea The most important factor is having adequate seed-bed moisture, so that seedlings are actively growing by the time the adults attack . When it is no longer sticky, replace the trap. That being said, when applying insecticide to seedlings, reapplication often needs to occur for positive results to last. Larvae feed on the Foliar pyrethroid sprays are the only chemical control option available. be serious. Flea Beetle: Organic Control Options. Larvae may seriously injure the roots of . tissue forming narrow lines in the corn leaf surface. Heavy feeding on young plants may reduce yields or even kill plants in severe cases. Adults feed on both leaf surfaces, but usually on the underside where they chew small, circular holes through to the upper cuticle. Flea beetles lay their eggs at the bottom of plant stems. Preventive steps that you can take include: Growing certain strong-smelling plants in the garden that tend to repel flea beetles. Simply sprinkle some grounds around your crops, encircling the stems of the plant. is somewhat different than other species. The first three leaves of corn are thought to have some type of antifeedant or toxin that increases beetle mortality. There are several different species of flea beetle that pose problems early in the season when they are considered occasional pests. sometimes causing damage so severe that plants die. . Begin monitoring for flea beetles soon after planting. It can be a Using covers made of horticultural fleece or very fine netting is the best defence, though a few may emerge from the soil under the tightest covers. The result looks like a number of shot holes Scouting for damage should occur every 1-2 days in newly planted fields, because flea beetles can quickly become a problem for young plants. . In recent years much of the focus has been on damage from adult CSFB rather than the impacts from larval feeding. (Photo Credit: John Obermeyer). CHEMICAL CONTROL OPTIONS. Flea beetles lay their eggs on plants or in soil around the Damage is generally confined to plants 2003. Growing Broccoli and Cauliflower in Minnesota (FO-1862), Cornell University. Try it on your farm. How to identify flea beetles A black potato flea beetle making holes in a potato leaf Most adult flea beetles are very small (1/16 -1/8 inch long). Repeat as needed. For example, the crucifer flea beetle attacks cole crops and mustards while the eggplant flea beetle is commonly associated with eggplant. with resistance to Stewarts wilt. A xe~Hw~~2R~O9Bz?vB|wtVna=mqu+g mq_^}9L;Otys9?OAOb|u:.OzE`z[~D/~sna&%?{dh\.t~3 3*[w?3 Chemical Control If you are looking to use a chemical control method, insecticides for seed treatments and also foliar insecticides can be effective. Made from water, vegetable oil (olive oil or canola), and pure organic liquid soap, this potent soapy water solution kills flea beetles and takes care of most pest problems. Flea beetle adults are small (about 0.12 inch long), shiny beetles with enlarged hind legs that allow them to jump like fleas. Flea beetles are attacked by predators, parasites and other consumers, but little is known about the mechanics explaining population variation from year to year. Moisture, not calendar date. Flea beetle life cycle. Throw them in a bucket of soapy water. about 1/8 inch long but ranges in color, from shiny reddish to

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