The citrus mealybug (Planococcus citri) has a world-wide distribution and many and diverse host plants.In temperate regions of the world this mealybug poses a problem in greenhouse horticulture, and in the tropics and sub-tropics on outdoor crops. A prime example would be pesticide sprays that kill existing populations of natural enemies. Manage mealybugs by conserving their natural enemies and reducing ant numbers and dust problems. Often attracted to lush green and soft plants, mealybugs use their piercing and sucking mouthparts to feed on plant fluids. Mealybug Identification Mealybugs are in the family Pseudococcidae and are closely related to armored scales, soft scales and the cottony cushion scale. Important aspects of citrophilous mealybug biology have been revealed. Insecticide application is rarely required. The Comstock mealybug primarily occurs on lemons in the San Joaquin Valley and has a thicker wax cover than the citrus mealybug. Release about 500 Cryptolaemus per acre. ... cryptomeria scale, gloomy scale, citrus mealybug and Mexican mealybug, generally mediocre to excellent control of false oleander scale, Fletcher scale, Florida wax ... while A16901B provided mediocre control when applied as drench but good when applied as foliar treatment. Mild temperatures and high humidity are perfect conditions for mealybugs to breed as eggs hatch every 2-3 weeks. Citrus mealybug has been collected on canna, narcissus, and tulip outdoors. These include Pseudococcus calceolariae (Glasshouse mealybug), P. longispinus (Long tailed mealybug) and Planococcus citri (citrus mealybug) and Rhizoecus species (root mealybugs). Pesticides: Systemic pesticides (like Imidacloprid, which is the chemical name) that move inside the plant are your best bet. 3. Botanical Oils: Neem oil derivatives sprayed at the label rates can keep the plant clean and free from mealybugs. Effects of food waste vermicompost aqueous extracts on citrus mealybug (Planococcus citri) numbers on tomatoes over time (means ± S.E.). Figure 25. Anagraphus sp., a common parasitoid of citrus mealybug. Cosmetic damage on fruit due to large citrus mealybug colonies and honeydew and sooty mold Capnodium spp., chlorotic spots, and rind hypertrophy, are commonly Additional control measures may be necessary to reduce populations when infestations are large. Female mealybugs lay several hundred eggs on the leaves, fruit, or twigs; eggs for some of the species are laid in cottony egg sacs. These plant-sucking pests are a familiar problem in greenhouses, in gardens, and on indoor plants. High-pressure water sprays are moderately effective at achieving control. The adult females have flattened oval-shaped soft bodies up to 4mm in length; they are sometimes pink in colour but appear whitish due to the white, waxy powder that covers their bodies. If not removed from the fruit after harvest, the remaining mealybugs continue to breed, causing loss during transit and storage. If there are just a few mealybugs here and there, you can just pinch the plant portion containing the mealybugs and trash them in a ziploc bag. passionvine mealybug, Planococcus minor Field specimens of citrus mealybug cannot be distinguished from passionvine mealybug. Since the black color is a fungus, often times, people apply fungicides, but as long as the root cause remains, the secondary infection cannot be controlled completely. Mealybugs remain mobile during their entire lifespan and have been shown to disseminate occasionally by wind and hitchhike on other creatures. Common mealybugs occurring indoors include: the citrus mealybug, the longtailed mealybug, the Mexican mealybug, and Pritchard's ground mealybug. Also available are oils extracted from other plants like Rosemary and other herbs. The longer of two intervals is the minimum time that must elapse before harvest. ), coffee and cacao. Add description and links to your promotion. References The regional distribution of the mealybug species associated with inland citrus in NSW, VIC and SA has been defined, and this has aided negotiations to facilitate access of Australian citrus to markets in the USA and Korea. Mealybugs are best treated when detected early, when populations are low. Preharvest interval (PHI) is the number of days from treatment to harvest. This is the stage when these insects are most susceptible to any chemical control measure. When Ants get into a symbiotic relationship with the mealybugs, they protect the mealy bugs in exchange for the honeydew (sugary solution) that is secreted by the mealybugs. Kallsen, UC Cooperative Extension Kern County, D. Machlitt, Consulting Entomology Services, Camarillo, T. Roberts, PCA, Integrated Consulting Entomology, Ventura, J.A. 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