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Mealybugs are serious pests of orchids and next to scale insects are probably the most difficult to control pests of orchids in homes and greenhouses.
Most definitely, they need to be dealt with immediately upon discovery.
The damage done to plants by mealybugs is considerable, causing a loss of vigor and a weakening and loss of leaves, buds, and flowers through their feeding. In addition, mealybugs create copious amounts of honeydew which make plant parts sticky, attracts ants, and provides a substrate for sooty mold.
Though some mealybugs vector Essay crawler viruses apparently no orchid viruses are known to be transmitted by these insects. Mealybugs are not particular about their host and probably all species of orchids are susceptible to mealybugs, especially when cultivated.
Identification Essay crawler species of mealybugs are known from Canada and the United States. Fortunately, only a few species are common or serious pests of orchids.
Mealybugs are classified in the family Pseudococcidae, and are closely related to the scale insects.
In fact, mealybugs can be thought of as a kind of soft scale that does not form the protective cover that most scales produce for protection. The pest species are in the genera Pseudococcus, Planococcus, Phenacoccus, and Dysmicoccus.
Immature to adult mealybugs may measure 0. All of the known orchid feeding species are coated with a waxy secretion that hides the body of these insects. The more common species of these odd insects that infest orchids are immediately recognized in the adult stage by the white, yellowish-white, whitish-grey, or pale pink to pale blue in color coating.
The body is oval and the sides of the body have short waxy filaments and there may be short to long filaments on the posterior end of the body. These filaments sometimes give the impression of numerous legs. Mealybugs can be found on all plant parts, but especially roots, rhizomes, pseudobulbs, and the underside of leaves.
They are adept at hiding on roots and rhizomes deep in the potting media, in crevices and under sheaths. Unlike scales, mealybugs wander in search of feeding places and will leave plants, be sure to check for them in cracks and in joints on benches, under lips of pots and trays, and other hiding places.
The immatures are small, and white to yellowish or pale pink.
Hatchling nymphs, or crawlers, are not easily seen without a magnifier and hide under cover, but older nymphs appear like diminutive adults.
Orchids become infested with mealybugs in some combination of three methods: Mealybugs are active and will crawl from one plant to another, pot to pot, and across benches. Mealybugs will leave plants and hide under rims of pots and trays, in bench crevices, and even drop from overhead plants.
Spread of crawlers can occur both indoors and outdoors by floating on breezes or air currents produced by circulating and heater fans.Paper Checker Reasons to Use Paper Rater. % FREE; It's simple - just copy and paste your essay below; View detailed stats about word choice, grammar, spelling, and more.
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