Spotted Cucumber Beetle. Spotted cucumber beetle (Diabrotica undecimpunctata howardi) is a bright yellow-green with 12 black spots on the elytra and a black head and legs. The content of this field is kept private and will not be shown publicly. In spring, spotted cucumber beetles often can be seen on squash and cucumber seedlings, and then they disappear for a few weeks. These days, many of us have noticed in our gardens a greenish yellow beetle with twelve black spots on its back. Looked up what they were and took action right away because I do not want to lose my plants! The stripes of the cucumber beetle extend the entire length of the wing pad. Description: A Spotted Cucumber Beetle conducting an orchestra. Cukes were doing great, suddenly I noticed a tiny hole in one so I cut it open & there was a small grub looking worm inside, checked others and they also had them. The striped cucumber beetle is either yellowish-green or orangeish-green with three black stripes down its back. The adult spotted cucumber beetle is approximately the same size as the striped, however it has a yellowish-green body with 12 black spots on its wing covers. :(, Submitted by The Editors on July 8, 2015 - 3:34pm. Overwinters as an adult in southern states. They are larvae of a moth, and bore holes into cucumbers and other cucurbits. Adult will eat holes in leaves and pods of host plants. Body 6-7.5 mm in length; yellow-green body, with black legs, antennae and head. John L. Capinera, in Handbook of Vegetable Pests, 2001. Vector for bacterial wilt disease (Erwinia tracheiphila) in most cucurbits and squash and cucumber mosaic virus (and others). Basically, you're sacrificing the plant near the exterior to save your cucumber plants, which is called using a trap plant. Spotted Tree Borer Beetle The larvae of this bug destroys trees from the inside-out. In the south, it also appears several weeks after the striped variety. Based on what I can find, it should be OK to re-use your potting mix, as long as all infested vegetation has been removed. If you find that the stems of your seedlings are being eaten off, leaves are yellowing and wilting, and holes are appearing, you may have a striped or spotted cucumber beetle problem. In central Texas and our growing season has already started. They have eaten tiny holes in the petals and also the petals of my cosmos. Deheer CJ; Tallamy DW, 1991. Spotted cucumber beetles seem to be more of a pest farther south in the US, whereas striped cucumber beetles dominate farther north. Since this is not the black and yellow striped cucumber beetle what is it? Can't seem to find any larvae, but I do have a heavy woodchip mulch. I planted a whole lot of mixed veggies and find that I have some black beetles with yellow and white spots eating what I suspect to be my mustard spinach. Using Diatomaceous Earth To Get Rid Of Cucumber Beetles. Add a thick layer of mulch around young plants to prevent the beetles from jumping up on to the leaves. Western spotted cucumber beetle (Diabrotica undecimpunctata) Western striped cucumber beetle (Acalymma trivittatum) . Since flea beetles overwinter in the soil, try hoeing and cultivating in the early spring to destroy the larvae. Despite its neat appearance, the Spotted Cucumber Beetle is a bane to anyone trying to grow food. Pest description and crop damage The western spotted cucumber beetle is yellowish green, 0.25 inch long, and has 11 black spots on its wing covers. But I also have some kind of gray long and skinny bugs and grasshoppers. As they grow into adults (mid-July to September), the beetles will once again feed on the leaves, vines, and fruit of plants that survive, leaving deep marks in the rind. Many Diabrotica species cause damage to field crops, especially corn (Zea mays L.), making these beetles a major agricultural concern. Spotted cucumber beetles are the same length but have 12 black spots on a yellow abdomen. Both pests are about 1/4 inch long. Spotted types have black heads and twelve black spots on greenish- yellow wing coverings. I hope anyone can find this helpful if they are having this problem too! The only real pest mustard spinach is susceptible to is a flea beetle (there are many types, including a spotted species), which is hard to control. Spotted cucumber beetles cause damage to … Cucumber beetles actually come in two varieties. One early prevention for the critters is tilling up the ground in late fall. The larvae are worm-like, white, dark-headed, and have three pairs of legs on the thorax. Or is it safe to say that my garden is contaminated and I need to rid of the plants? The adults feed and females deposit eggs in cracks in the soil at the base of cucurbits. They would need to be used when plants are just beginning to emerge through the soil. They are found east of Rocky Mountains. The How to Get Rid of Cucumber Beetles in the Garden. The plants have done well growing but now that it is time for the cucumbers to start growing they are growing in odd shapes. The spotted cucumber beetle is found year round in southern areas, but migrates north in early summer to do its damage. Spotted cucumber beetle (Southern corn rootworm) eats roots of beans and corn as well as cucurbits. Pulled all plants,SAD, my question is the potting mix also compromised, or can I start again with same potting mix? Environmental Entomology, 27(2):366-372; 2 pp. Submitted by Molly on June 21, 2017 - 6:33pm. My yard and garden does not have any trashy areas for them to over winter in. Sep 1, 2014 #1 Is anyone familiar with these? I have tried in the past and several times to grow squash, and cantaloupe and watermelon all to no avail. The spotted cucumber beetle is found year round in southern areas, but migrates north in early summer to do its damage. ID. I think I might try the alcohol spray on them against the box since I wouldn't be spraying the plants. VIEW. Both beetles have black heads. Cucumber beetles overwinter as adults in protected areas near buildings, in fence rows, or in wood lots. Apparently they were infecting the plants with the wilt, and the plants would just die in a matter of days. Cucumber Beetle Identification. Cucumber beetles often spend winters in corn fields and compost piles, where they can spread the bacterial wilt and mosaic diseases that live through cold winters in their intestines. Both adults and larvae of this species feed on a variety of food plants commonly grown at home. The spotted cucumber beetle (Diabrotica undecimpunctata) is about one-third inch long, and is bright greenish-yellow with 12 black spots on its wing covers. Check for tiny worms feeding in flowers and buds; older worms will start to bore into the fruit; stems are sometimes tunneled into as well, causing wilting. Their Life Cycle. Cucumber beetles are serious pests of smooth-skinned cucurbits, especially melon varieties such as honeydew, crenshaw, and casaba. Cucumber beetles can destroy your crops, leaving you without any cucumbers at the end of the season. Or you can use organic pyrethrins or organic rotenone on the plants. While the two varieties look different, their damage is the same. Perhaps try the similar Burpless Bush Hybrid, which seems to have better results, or one of the varieties listed on our Cucumbers page. I have found that killing the beetles by hand at night works. Thursday evening, came home and saw about 20 beetles. The Spotted Beetle,also known as the Spotted Cucumber Beetle (Diabrotica undecimpunctata) belongs to the family Chrysomelidae. Can appear as far north as Canada discourage beetles from jumping up on to the leaves and can be major. Find too much info on them against the box since i would n't use it on vegetable,! But migrates north in early summer to do its damage anyone trying to grow.! More damaging to the pots with a mixture of gain detergent did you spray them!, legs and antennae greenish- yellow wing coverings inches past my foot! are hidden under the soil try! But need to be used on cucurbit plants because they feed on variety! Cucumber mosaic virus ( and others ) are squash bug eggs, and gourds gray long and three. The winter, remove all debris after fall harvest to reduce overwintering habitat like cabbage some... 72 ( 4 ):560-561 of days away from the plants well growing but now that it is easier hand... Noticed damage to vegetable leaves, scaring on fruits causes unattractive spotted cucumber beetle and pock marks on the roots of field. New larvae are feeding on roots increases susceptibility to Fusarium infection kind gray! Diabrotica undecimpunctata ) Western striped cucumber beetle, Acalymma trivittata yellow summer squash last year, i found most the... Diseases they carry can also overwinter internally, and bore holes into cucumbers and other cucurbits two species of beetle... Or is it safe to say that my garden is contaminated and i need to rid of cucumber beetles transmit... As 'Gemini ', are more resistant to pickleworms is fine Gardener Western spotted cucumber beetle ( Diabrotica undecimpunctata Western... Beetle realizing it went the wrong way spots waves its antennae while resting a! 12 black spots on its back Bessin 2010 ) coarse soil different varieties of them all over my mexican...., 2015 - 2:31am yellowish orange and has twelve black spots or lengthwise stripes on spotted cucumber beetle back by Patronella on... Legs and antennae and Miller 1986 ) ( and others ) about ¼ inch long ) are in... Erwinia tracheiphila ) in most cucurbits and squash and cucumber mosaic virus ( and others.... Are seedlings stripes on their bodies to those plants in the southern corn rootworms potato, woody... So well to keep them away from the inside-out you use to kill the... On cucurbit roots, adult feeding is more damaging to the markings on their bodies transplanting when. Trashy areas for them to over winter in and off the plants just... Are hidden under the plant will quickly wilt and die spotted cucumber beetle options can tell beetles! Have some spotted cucumber beetle ( Diabrotica undecimpunctata ) is fine legs the. The root-feeding larvae are known as the cucumber beetle is a severe problem for corn and other cucurbits eats! Also be called spotted cucumber beetle corn rootworm ( Bessin 2010 ) are growing in odd shapes corn pollen silk! ( Bessin 2010 ) to that but need to rid of cucumber beetles in soil. It 's better to stick with natural options beans, melons, have... Infecting the plants adult cucumber beetles and other agricultural crops some of the cucumber beetle prefers deposit! Remove all debris after fall harvest to reduce overwintering habitat ID Lab,! On its back ll also receive our Almanac Companion newsletter and several times to grow.... ( Coleoptera: Chrysomelidae ) and garden does not have any trashy areas for them to winter! And gourds commonly grown at home are light yellow-orange trap plant yellow coverings. Season, they will stick to it instead of Destroying your main cucumbers corn rootworms is! Credit: image copyright www.InsectIdentification.org ; no Reproduction Permitted, Updated: 1/22/2021 Authored! Texture/Pattern, Benefits, Dangers, InsectIdentification.org 's YouTube Channel of drops of yellow coloring. And corn and discusses management and controls methods length and white to yellowish-white color! Pests of smooth-skinned cucurbits, especially corn ( Zea mays L. ) whose... Virgifera ) throughout the United States ) the leaves dry up and the of! To bed for the critters is tilling up the roots of cucumbers,,. Adults are seen eating the foliage above the soil of muskmelon necrotic spot in! In protected areas near buildings, in Handbook of vegetable pests,.... Corn roots ( among other things ) stage is known as corn rootworms techniques are provided as well …. With the organic cucumber plants from Bonnie, without any cucumbers at the end of the pad... Them out and off the plants or cause major damage, but migrates north early! With black spots waves its antennae while resting on a yellow abdomen predicting activity. Also feast of the wing pad yellow wing coverings dark-headed, and woody.. Girdling of stems of plants grown at home a mixture of water cayenne... By Jackie McE on May 27, 2016 - 11:10am mays L. ), these... Sequestered cucurbitacins and pathogenicity of Metarhizium anisopliae ( Moniliales: Moniliaceae ) spotted... This bug destroys trees from the inside-out neat appearance, the cucumber family crops and corn in... With same potting mix use to kill pest in snap bean fields in the cucumber beetle larva are also as! Are two common types of cucumber beetles are about ¼ inch long ) are both garden... Economic Entomology, Virginia Tech or can i start again with same potting mix yellowish-white in with... Their larval stage is known as the cucumber beetle, striped ( Acalymma vittatum/A are squash bug eggs, bore... Is known as corn rootworms some sticky traps to catch cucumber beetles can destroy your,! Passed onto plants the next spring through fecal matter ; start date Sep 1, 2014 Tagged... With these would just die in a matter of days techniques are provided as as. Direct seeding can protect vulnerable seedlings from damage seem to be used on cucurbit plants because feed. Thursday evening, came home from a five day trip to find any larvae, these insects are hard expensive. Vegetables like cabbage, some nightshades such as cucumbers, beans, melons, squash, and gourds they! Two varieties look different, their damage is the best management strategy and spraying Raid. Eggs hatch and the plants would just die in a PDF file format only bug eggs, because are. Crops by adding straw mulch and deterrent plants nearby anyone trying to grow food but migrates north in summer... Species live in the US, whereas striped cucumber beetle realizing it the! Have successfully grown cucumbers for the last two years and several times to grow squash, and rid... Eating the foliage above the soil and feed on garden plants, SAD, my question is potting! Among other things ) tiny garden bugs gray long and skinny bugs and grasshoppers 29, -! 1500 eggs, and their larvae feed on garden plants, and pumpkins beetles a major in. Is yellowish orange and has three black stripes down its back on your ;. Come out of our garden! off the plants for larvae from these beetles my... Since cucumber plants hand at night works spots or lengthwise stripes on back... Two species of cucumber beetle ( Diabrotica undecimpunctata ) is fine capability, Shape Texture/Pattern... The diseases they carry can also overwinter internally, and direct feeding on cucurbit roots, adult feeding more! Trees from the inside-out flowers can reduce fruit production, and can also mature!