Mealy aphids

Many species of the Ladybug family (Coccinellidae) play a beneficial role in controlling populations of harmful insects such as aphids, mealy bugs and scale insects (70MI30800). Ladybugs have few natural enemies. When disturbed they emit droplets of a fluid from their joints which serve as an efficient deterrent to would-be predators. 

Ladybugs are natural predators of aphids, mealy bugs, and leaf hoppers and may be introduced into a garden environment as a nonchemical pest-control method. 

Chrysoperla including aphids, mealy- erratically in a zigzag producing plants and allow ] L... 

Sooty mold is sometimes troublesome by causing an unsightly appearance of the fruit. The mold growth follows the feeding of mealy bugs and aphids on the inside of the fingers of the bunch of bananas and is usually not seen until the fruit is ready for sale. Economic field control measures should be developed. 

Because some form of brassica crop can be growing at any time of year, cabbage whitefly and mealy aphids can build up in considerable numbers. It pays to remove all members of this crop family once a year—in early spring, for example—to break the cycle. 

Adults of this pest are gray-green In color and are covered In a powdery white, mealy wax. Overwintering eggs, laid on stems and leaves of brassicas, hatch In spring. Infestations occur from midsummer onward, reaching a peak in early to mid-fall. See also Aphids. 

In screening tests it was observed that this isoparaflBnic oil, at 100% concentration, killed from 85 to 95% of mealy bugs and aphids in the greenhouse. Test plants such as peach, gardenia, squash, com, and bean were uninjured at this concentration. 

Braconid wasps parasitize leafroller caterpillars, codling moth caterpillars, leafminer caterpillars, mealy apple aphid, green apple aphid. 

A similar trisaccharide composed of two D-glucose units and one d-fructose unit can be isolated by charcoal chromatography from the honey-dew of the citrus mealy bug Pseudococcus citri when feeding on the sap of potato sprouts 207). Presumably this trisaccharide arises as a natural product in the digestive systems of many insects. Also there is chromatographic evidence for its presence in honeydews of cottonlike maple scale, Pulvinaria vitis, and in the spirea aphid, Aphio spiralcola. 

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