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 ?
Table 1: Means of cotton mealybug incidence for the different localities with 95% confidence limits.
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%.
"Farmers are happy with this costeffective, pesticide-free technique to deal with the mealybug and now see possibilities of recovering their papaya farms," says CABI research coordinator Abdul Rehman.
Of the many pseudococddeos parasites, Maconellicoccus hirsutus Green, 1908 (HAYAT, 2006), the pink hibiscus mealybug, was most recently detected in Brazil (MARSARO JR, et al., 2013).
Shinde said, " We are using chemical, organic and biological methods to tackle the Mealybug menace.
[Structure and functions of the integumentary glands of mealybugs, Pseudococcidae, and of their secretion].
Key words: Feeding potential, Chrysoperla carnea, Cryptolaemus montrouzieri, cotton mealybug.
The value of leaf pubescence is not entirely known, but it does contribute to mealybug resistance (Johnson-Cicalese et al., 1998), and may contribute to reduced evaporation from leaf surfaces (Kramer, 1983).
This species of mealybug, Maconellicoccus hirsutus, has spread throughout the Caribbean region since first being detected on the island of Grenada in 1994.
In the training sessions, farmers are being shown the various control methods at all stages of mealybug growth, namely the nymph and adult.