Where do fruit flys come from?  Are they in all fruit and just need
the right enviroment (molding warm fruit) to hacth, are they in all
homes and just get attracted to fruit...?  More detail and links would
be great.

Hi sailor_boy,

Thank you for your question.


doyourownpestcontrol.com
http://www.doyourownpestcontrol.com/fruit_fly.htm

"Fruit flies: can be spotted around fresh fruits/vegtables, rotting
fruits and vegetables, drains, garbage and damp organic materials

With the end of the summer season, many homeowners often encounter
fruit flies in and about their kitchens and near garbage storage
areas.

Fruit flies are generally found hovering around decaying vegetation
and overripe fruit.

The fruit fly is most often found hovering around overly ripe fruit. 
Fermenting materials, such as leftover beer or soft drinks, also are a
favorite food of fruit flies.

Fruit flies are often found in the kitchen, especially when vegetable
or fruit materials are present after major home canning efforts."

[edit]

"Like all flies, the fruit fly develops by complete metamorphosis. 
Eggs are laid near or on top of attractants (fermenting materials)
such as beverages, decaying fruit and vegetable matter, garbage or
slime in drains.

The fruit fly is attracted to any area where moisture has accumulated
including mops and wet rags. The larvae emerge from the eggs and feed
near the surface of the fermenting material for 5-6 days.

This surface-feeding characteristic of the fruit fly larvae is
significant in that damaged or over-ripened portions of fruits and
vegetables can be cut away without having to discard the remainder for
fear of retaining any developing larvae.
However eating the larvae can cause intestinal discomfort and diarrhea. 
For this reason, health professionals and sanitarians are concerned
when fruit flies are found infesting facilities where food is
prepared, processed, or served.

Newly-emerged fruit fly adults are attracted to lights, but egg laying
females will not leave fermenting materials. The fruit fly larvae then
crawl to drier areas of the food source or even out of the food source
to pupate. Under ideal conditions, the life cycle of the fruit fly,
from egg to adult can be completed in as little as eight days.
Life cycle from egg to adult is approximately 10 days."

(read article for more information on:

Recommended Control Measures for Fruit Flies: 

Exclusion and Sanitation, Insecticides, Traps, and Aerosols 

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pestproducts.com - FRUIT FLIES (cached page)

http://66.102.7.104/search?q=cache:2PuSzINj0zEJ:www.pestproducts.com/fruitfly.htm+all+about+fruit+flies&hl=en&start=2


Life History of the Fruit Fly

"Fruit flies develop by complete metamorphosis.  The eggs (which are
difficult to see with the naked eye) are deposited near the surface of
fermenting fruit or organic matter.  A pair of filaments that are
attached to the eggs protrude above the surface of the liquid.  The
female fruit fly will lay about 500 eggs.  The larvae emerge about 30
hours after the eggs have been laid and feed near the surface of the
fermenting material.  The larvae feed for five to six days then crawl
to drier areas of the food source or even out of the food source to
pupate.  The larva transforms into the pupa in the last larval skin,
or puparium, which bears a conspicuous pair of filaments on the
anterior end.   The adult fruit fly emerges several days later.  The
newly emerged fruit flies are attracted to light and become sexually
active in about two days.   The adults mate more than once.  Under
ideal conditions, the life cycle from egg to adult can be completed in
as little as eight days.  The sudden appearance of large populations
is not uncommon inside buildings.

The complete dependence of all stages of the fruit fly on moist,
decaying (or fermenting) organic materials is a key point to remember
in inspection and elimination of fruit fly infestations.

The fruit fly breeds in and feeds on ripened fruits and vegetables, as
well as moist, decaying organic matter."

=========

The Dollar Stretcher
http://www.stretcher.com/stories/03/03jul21b.cfm

=========

University of Kentucky Entomology - FRUIT FLIES
By Mike Potter, Extension Entomologist
http://www.uky.edu/Agriculture/Entomology/entfacts/struct/ef621.htm

=========

Wingless Fruit Flies
http://home.clara.net/xenotoca/fruitflies.htm

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keyword search:

fruit fly history
fruit flies
fruit flies breeding
fruit flies control
=========

Best regards,
tlspiegel