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View Thread :: Identification queries :: Diptera (adults)
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Unknown fly on cactus flower bud
#1 Print Post
Posted on 15-12-2011 21:38

Posts: 37
Joined: 11.12.11

This fly seemed to be interested in laying eggs in the bud of a cactus flower (I think the cactus was Pilocereus sp.) It maneuvered around the bud for more than fifteen minutes and seemed to be trying to oviposit into it. Thanks in advance for any ideas about what it might be. A couple additional photos to follow.
marcaumarc attached the following image:

#2 Print Post
Posted on 15-12-2011 21:41

Posts: 37
Joined: 11.12.11

another photo.
marcaumarc attached the following image:

#3 Print Post
Posted on 15-12-2011 21:42

Posts: 37
Joined: 11.12.11

marcaumarc attached the following image:

#4 Print Post
Posted on 15-12-2011 21:42

Posts: 37
Joined: 11.12.11

last one.
marcaumarc attached the following image:

#5 Print Post
Posted on 15-12-2011 21:51
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Posts: 1445
Joined: 07.11.10

Is it possible Lauxaniidae? Smile
Sincerely yours
Paul Beuk
#6 Print Post
Posted on 15-12-2011 21:52
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Super Administrator

Location: Netherlands
Posts: 19254
Joined: 11.05.04


- - - -

Paul Beuk on
#7 Print Post
Posted on 15-12-2011 22:13
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Location: Reading, England
Posts: 7699
Joined: 12.07.04

Nice photos Smile But it would probably help the experts if you say where in the world the photo was taken Wink
Manager of the UK Species Inventory in the Angela Marmont Centre for UK Biodiversity at the Natural History Museum, London.
#8 Print Post
Posted on 15-12-2011 22:31

Location: Zoelmond, the Netherlands
Posts: 1984
Joined: 01.11.06

or Cephalocereus sp. ;-)
ruud van der weele
#9 Print Post
Posted on 15-12-2011 23:04

Posts: 37
Joined: 11.12.11

Sorry, I forgot to give the location. It is St. Martin in the Lesser Antilles.
Iain MacGowan
#10 Print Post
Posted on 16-12-2011 11:36
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Location: Perth, Scotland
Posts: 442
Joined: 25.11.04


Definitely female Lonchaeidae, all black legs and a very long antennal segment would point to the genus Silba or Neosilba - and as only Neosilba occurrs in the Neotropics thats what it is. Difficult to get to species level from a photograph as there are a few very similar species in this area - See link below for maps and further info .......... Iain

Edited by ChrisR on 16-12-2011 11:39
Iain MacGowan
#11 Print Post
Posted on 16-12-2011 17:41

Posts: 37
Joined: 11.12.11

Thanks Paul and Ian!

As a side note, I was eating a fruit from the same species of cactus today and it contained larvae. I didn't have my macro lens with me, but perhaps it was the same species.
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