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Fruit Fly Trap/Collector

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6 replies to this topic

#1 Offline AntsAreUs - Posted July 6 2018 - 11:43 AM


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First I'd like to give credit to Barristan for showing me this setup. Anyway fruit flies are attracted to light so they will climb up the cup. You should have a funnel of some sort going into the top of the cup so that the flies cannot escape but they can get in. You just simply place some sort of fruit to attract them in areas where fruit flies are abundant. When you are ready to feed, you can cover the top of the cup and place in the freezer to kill them.


The setup I have here is a very cheap homemade version that seems to work really well. You can experiment with various things to see what works. I just used a cup from McDonalds and a paper funnel that I taped together.



I placed this one by my compost bins which get a lot of attention from fruit flies. There are 25-30 flies in this one setup.



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Currently keeping:

Ants:    Stigmatomma pallipes

            Temnothorax schaumii - Journal

            Temnothorax curvispinosus

            Myrmecina americana - Journal

            Ponera pennsylvanica - Journal

            Formica incerta Journal

            Formica subsericea

            Formica rubicunda

            Aphaenogaster tennesseensis - Journal

            Aphaenogaster rudis Journal

            Myrmica spp. Journal

            Camponotus chromaiodes - Journal

            Camponotus pennsylvanicus

            Camponotus subbarbatus - Journal

            Camponotus sp.

            Strumigenys pergandei - Journal (Discontinued)

            Strumigenys pilinasis - Journal

            Hypoponera opacior

            Tetramorium immigrans - Journal

            Tapinoma sessile - Journal

            Lasius americanus

            Lasius neoniger

            Lasius murphyi

            Solenopsis molesta

            Pheidole pilifera


Other:  Millipedes



Soil Centipedes (Geophilomorpha sp.)

Stone Centipedes (Lithobius sp.)


Indian Mealmoth Culture


Some types of mites

#2 Online AntsBC - Posted July 6 2018 - 12:13 PM


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I will be trying this! I have heard fruit flies make great food for ants I just haven't gotten around to making one of these setups.  

Currently Keeping:


Formica cf. fossaceps (parasitic) - Journal

Formica neogagates 

Formica pacifica - Journal

Formica podzolica

Lasius americanus

Manica hunteri - Journal

Myrmica incompleta


YouTube (Its a bit dead)

#3 Offline Barristan - Posted July 6 2018 - 12:16 PM


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Wow well done my self made did not look as good, but I have my bought one ;)
The one I bought looks like this:


The nice thing about it is that you can use the also as a cup and close it even without removing the funnel. So no flies will escape if shaking it too much or laying it into the freezer.

Edited by Barristan, July 6 2018 - 12:19 PM.

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#4 Offline BrianK - Posted July 6 2018 - 8:31 PM



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Nice Barristan. Can I ask where you got that trap? Are you afraid of pesticides on them?

#5 Online Trythis22 - Posted July 6 2018 - 9:08 PM


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I saw fruit fly trap and thought that I should share what I'm doing. 





Holding Cell



Top view 



Basically what you do is attach the holding cell tube into the tube coming out of the farm, flip it upside down, tap the farm until you get the desired amount of flies into the holding cell, detach the two and put the cotton back on the tube coming out of the farm. I've had no escapees and this method will work for transporting hundreds to thousands of flies. If you pick up the holding cell and set it down, the impact is hard enough for all the flies to fall back down. About 10 seconds more time for you to put the cotton back in the tube. 


The holding cell was an old soap dispenser and the farm is a mason jar with the lid replaced with mesh, silicone and tubing. 3/4" inside diameter and 1" outside diameter on the large tube on the dispenser and 5/8" ID and 3/4" OD on the smaller tube on the mason jar so they fit together snugly. 


I'm currently letting this one, which is 1 out of 3, die out because I have no use for so many flies. They create over 500 flies per week and the inside is completely black due to being plastered with larvae, adult files and dead flies. It's too disgusting and embarrassing to post.  


EDIT: Interior/exterior diameter numbers are more clear.  

Edited by Trythis22, July 23 2018 - 4:10 PM.

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#6 Offline TKD102 - Posted July 17 2018 - 4:16 AM



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That looks really handy, I'll be trying that out soon for my colonies.  :D

#7 Offline TKD102 - Posted July 18 2018 - 2:55 AM



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I found a version of this on thingiverse that's similar, but it's just a 3d printed lid. I thought I'd put it here to give more options on what people want to do.



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