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Diptera.info :: Identification queries :: Diptera (adults)
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Sarcophagidae and earthworms (again)
Louis Boumans
#1 Print Post
Posted on 02-09-2005 10:04
Member

Location: NO Oslo
Posts: 262
Joined: 09.06.04

Apart from, and more important than, the identification of the pictured fly, I have a question about its biology.

Sometimes I find dead large earthworms on the pavement. I wonder why they bothered to come out to the surface and die in the sun. This time I noticed an aperture in the worm on one side.
My idea: perhaps a Sarcophagid parasitoid forces its victim to surface. (I image a fly would't want to pupate 40 cm below the surface.)

There was no pupa in the worm's body, but then I assume the larva leaves it before pupation.

So: who knows more about this?


Remarkable is also this Sarcophagid female that was very much attached to the dead earthworm, and therefore easy to photograph.

cheers, Louis
www.diptera.info/forim/5-0676-1.jpg
 
Zeegers
#2 Print Post
Posted on 05-09-2005 08:54
Member

Location: Soest, NL
Posts: 18549
Joined: 21.07.04

Could be, or might be Pollenia with similar biology.


Theo Zeegers
 
Louis Boumans
#3 Print Post
Posted on 05-09-2005 18:22
Member

Location: NO Oslo
Posts: 262
Joined: 09.06.04

True, I forgot about those! Erzinclioglu's 1996 booklet gives some info about Pollenia, but not where the larva pupates.. Thanks for reminding me, Louis
 
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