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 Sarcophagidae and earthworms (again)
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| Louis Boumans |
Posted on 02-09-2005 10:04
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Member Location: 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  |
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| Zeegers |
Posted on 05-09-2005 08:54
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Member Location: Posts: 18446 Joined: 21.07.04 |
Could be, or might be Pollenia with similar biology. Theo Zeegers |
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| Louis Boumans |
Posted on 05-09-2005 18:22
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Member Location: 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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but don't see the image in the post.
