Cherry fruit fly

This subclass also includes heptenophos, which is primarily used for control of aphids in agricultural, horticultural, and ornamental crops cherry fruit fly, psylla, and phorid fly on mushrooms and mealybugs, whiteflies, and thrips in greenhouses. Its oral LD50 in rats is 96-121 mg/kg. 

Areas of application Mode of action Advantages Remarks Apple and plum sawfly, also effective against aphids, tortricid larvae and cherry fruit fly Repellent, contact and ingestion insecticide against sawfly Not harmful to beneficials Use against sawfly at end of flowering... 

Cause Cherry fruit fly maggots. Larvae feed near the stone in ripening cherries. 

Protection Offered Use homemade sticky traps to catch and control adult cherry fruit flies in cherry orchards. You can also use them as monitoring tools to help you decide if and when to apply botanical insecticides. 

How to Use Paint a 10 x 6 piece of plywood bright yellow (use Federal Safety Yellow No. 659 from Rustoleum Company or Saturn Yellow from Day-Glo Colors), then cover it with sticky coating. Below it, hang a small, screen-covered jar filled with a mixture of equal parts ammonia and water, or a commercial apple maggot lure. Instead of a flat piece of plywood, you can paint the bell-shaped top half of a plastic, 2-liter soda bottle. In one study, this bottle trap was found superior to commercial designs for controlling Western cherry fruit flies. 

The use of such materials to induce the mosquitoes to lay eggs in locations unsuitable for their development could reduce the amount of pesticide needed to control populations. The European cherry fruit fly lays only one egg in a cheriy, then marks the cherry with an ovipositing deterrent (11.39).170 Spraying the tree with this deterrent reduced the infestation dramatically. 

The saying is based on the notion that after June 24 cherries harbor worms. There s actually some truth to this. The worms in question are the larvae of the cherry fruit fly, which hatch from eggs laid by adult flies. 

The European cherry fruit fly, Rhagoletis cerasi, lays a single egg into half-ripe cherries. An oviposition-deterring pheromone, which prevents oviposition by a second female of the same species, was isolated from the feces of the insect. This compound was characterized as A [15(p-glucosyl)oxy-8-hydroxypalmitoyl]-taurine (76) (Fig. 2.30) (Hurter et al., 1987). 

Fig. 1.5 Tip recordings from a tarsal D-hair of Rhagoletis cerasi (cherry fruit fly) in response to surface extracts of fruits with female pheromone markings and of fruits which had only contact with an equal number of males.

A very remarkable example of a pheromone is the oviposition deterrent of the cherry fruit fly Rhagoletis cerasi. This substance is placed on the cherry fruit by the female fly after she has laid her egg in it (Ernst and Wagner, Helvetica Chimica Acta, 1989, 72, 165). Its purpose is to stop other females of that species from laying eggs in the same fruit. The pheromone must be stable and non-volatile and remain intact in sun and rain. It consists of sugar, fatty acid and amino-acid portions, which together ensure a non-volatile, UV transparent and insoluble substance (Figure 9.18). 

Figure 9.18 The oviposition deterrent pheromone of the cherry fruit fly. It consists of a dihydroxystearic acid with a glucose molecule attached as an ether and an amide of the amino-acid sarcosine...

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