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The Society for the study of flies (Diptera)

Affiliated to the British Entomological and Natural History Society (BENHS)

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#1 2008-10-14 15:53:00

Andy chick
DF Members
Name: Andy Chick
From: Nottingham
Registered: 2008-02-26
Posts: 99
Website

flies from pit fall traps

Hi i have a few flies that were caught using a pitfall trap, i was wondering how to got about drying them for pinning?

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#2 2008-10-15 16:59:00

Laurence Clemons
DF Members
Name: Laurence Clemons
Registered: 2008-04-02
Posts: 390

Re: flies from pit fall traps

This Summer the entire contents of my pooter became flooded during a heavy downpour. On returning home I immediately rinsed out the contents into a dish with isopropyl alcohol and then removed the specimens to the usual plastazote pinning box. When the alcohol evaporated under the desk lamp the flies were in prisiting condition. This will work with some pitfall trap material but the quality will depend on how long they have been in the preservative. Also if formalin has been used then the specimens will usually be in a bad state.

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#3 2009-03-04 05:29:00

schultmay
DF Members
Name: Barbara Ismay
Registered: 2008-02-14
Posts: 135

Re: flies from pit fall traps

We usually recover flies even after several years by pinning them while in alcohol, then putting them into a tube with 2-Ethoxy-Ethanol over night and then for 30 mins to 3 hours (depending on site) into Ethyl-acetate. Most flies recover very well, only sometimes doli-eyes collapse. But note that you cannot dissect the flies afterwards as they become to hard, this needs to be done while still in alcohol.

Good luck,

Barbara

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