mealybug

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mealybug,

common name for certain unarmored scale insectsscale insect,
common name for members of a highly modified group of insects belonging to several families of the superfamily Coccoidea. Scales possess antennae and are characterized by reduced legs. Only the males have wings; females are always wingless.
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 that exude a granular white secretion, giving them a mealy appearance. Many are common greenhouse and crop pests. Adult females are wingless, with oval, segmented bodies and well-developed legs. The females and young feed on various parts of plants with their sucking mouthparts. Adult males have no mouthparts and do not feed. In egg-laying species the female produces several hundred eggs in a mass covered with waxy threads. In other species the young are born alive. The most serious pests are mealybugs that feed on citrus; other species damage sugarcane, grapes, pineapple, coffee trees, ferns, and orchids. Mealybugs are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Homoptera, family Pseudococcidae.

mealybug

[′mē·lē‚bəg]
(invertebrate zoology)
Any of various scale insects of the family Pseudococcidae which have a powdery substance covering the dorsal surface; all are serious plant pests.
References in periodicals archive ?
Leaves were washed in a solution of water and sodium hypochlorite (10 ml per L) for 2 min and dried with a paper towel before they were offered to the mealybugs.
Management of vine mealybug (VMB) in California vineyards has been problematic because of this pest's high reproduction potential with multiple generations and a year-round presence with life stages that overwinter under vine bark, where it is difficult to apply treatments.
Aenasius bambawalei (Hymenoptera: Encyrtidae) is an effective parasitoid of mealybug and has been the backbone of the biological control program of cotton mealybug in Pakistan, but its multiplication for inundative releases has been impacted by a hyperparasitoid, Promuscidea unfasciativentris Girault (Hymenoptera: Aphelinidae: Eriaporinae).
Achyranthes aspera (Amaranthaceae) and Helianthus annuus (Asteraceae) commonly available in the agro-climate of Faisalabad, Punjab, Pakistan were evaluated against 1st instar cotton mealybug following multi choice experiment under laboratory conditions at temperature of 25+- 2degC and relative humidity 65 +- 5%.
Encyrtidae of Costa Rica (Hymenoptera: Chalcidoidea), Part 1: The subfamily Tetracneminae, parasitoids of mealybugs (Homoptera: Pseudococcidae).
Another interesting finding, says Van Rensburg, is that mealybugs are spread mainly by people and tools, not by wind and birds as thought.
Entomopathogenic nematodes in the control of cassava root mealybug Dysmicoccus sp.
The group sent the samples of mealybugs to the National Bureau of Agriculturally Important Insects ( NBAII) in Bengaluru.
Mealybugs of California with taxonomy, biology, and control of North American species (Homoptera: Coccoidea: Pseudococcidae).
2011) but it is difficult to achieve perfect control of mealybugs with conventional insecticides due to waxy material which covers the bodies of adult females (Rao and David, 1958; Dean et al.