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Diptera.info :: Family forums :: Asilidae Forum
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Neotropical asilid
ChrisR
#1 Print Post
Posted on 01-12-2007 19:49
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 I am fairly sure this fly is an asilid but I'd be glad of some advice. It flew with a very similar bumblebee (see below) so there appears to be some mimicry there.

Location: French Guyana
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ChrisR
#2 Print Post
Posted on 01-12-2007 19:55
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 and the bee...
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jorgemotalmeida
#3 Print Post
Posted on 01-12-2007 20:00
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Location: Viseu - PORTUGAL
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 amazing mimicry here!
 
http://www.flickr.com/photos/superegnum
Rui Andrade
#4 Print Post
Posted on 01-12-2007 21:30
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 What a beautiful flySmile
 
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Cor Zonneveld
#5 Print Post
Posted on 01-12-2007 23:07
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 Can you also make available a lateral shot, especially from the head? I'm not an expert at all, so may be I'm totally wrong, but the antennae do not loke very Asilid like.

Quite often mimicry is invoked for every furry fly - like Laphria flava. But equally often this idea is not convincing at all - no bumble bee comes to my mind when I see this magnificent Robber fly, L. flava. But here - wow! Wonderful combination of fly and bee, and near perfect match! Wing colour is to me very convincing!
Thanks for your attention
Cor Zonneveld
 
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ChrisR
#6 Print Post
Posted on 02-12-2007 02:11
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 Here's a lateral and a frontal head-shot - sorry they aren't very clear but it does have a very large proboscis - it just likes to hide it between the front legs! Smile

I remember the asilids had another nice aspect to their mimicry. They'd wait on low foliage on sunny paths, like any asilid around the world, but in flight they buzzed, just like a bee Smile
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Edited by ChrisR on 02-12-2007 02:18
 
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ChrisR
#7 Print Post
Posted on 02-12-2007 02:11
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 head-shot...
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ChrisR
#8 Print Post
Posted on 02-12-2007 02:12
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 While I was going through the box I found this one and thought you might be interested. It isn't the same species but it's another nice asilid - with a metallic golden-dusted thorax Smile
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Cor Zonneveld
#9 Print Post
Posted on 02-12-2007 21:58
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 Thanks Chris, I never missed the moustache on a Asilid, and yes it's here too! Great flies!!
Thanks for your attention
Cor Zonneveld
 
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Guenter
#10 Print Post
Posted on 02-12-2007 22:33
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 Compare with Dasyllis haemorrhoa (Brazil) looking like Eulaema cf. bombiformis on the homepage of Fritz Geller-Grimm:
http://www.geller...nera12.htm
Edited by Guenter on 02-12-2007 22:35
Günter Schwendinger
 
ChrisR
#11 Print Post
Posted on 04-12-2007 15:38
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 Thanks G?nter - those photographs on your link are very convincing. If they are not exactly the same species of bee & asilid they are almost certainly the same genus! Grin
 
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jorgemotalmeida
#12 Print Post
Posted on 06-12-2007 15:27
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 your bee seems really a Xylocopa sp.
 
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ChrisR
#13 Print Post
Posted on 07-12-2007 00:08
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 Same shape as Xylocopa - but definitey Eulaema Smile
 
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Eric Fisher
#14 Print Post
Posted on 16-12-2007 03:59
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 Interesting photos Chris. Excellent Eulaema mimicry, to be sure; so good, in fact, that the fly has tricked you! The asilid is Mallophora tibialis, which is in the subfamily Asilinae; Dasyllis haemorrhoa (from Fritz Geller-Grimm's excellent site) is a Laphriinae, tribe Andrenosomatini. These two genera are the most spectacular of the Asilidae that mimic Eulaema but there are others (including cryptic spp. of Dasyllis and Eulaema that all resemble a common model). The Mallophora (Asilinae) has very different antennae and wing venation compared to the Dasyllis (Laphriinae). The second robber fly is probably a Lampria sp. (also Laphriinae). Would you be able to post a dorsal shot - to help with identification?
 
ChrisR
#15 Print Post
Posted on 20-12-2007 16:35
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 Hi Eric - many many thanks for correcting my identification of the first specimen Smile Here is a lateral shot - the metallic colours don't show very well but they are a little transient.
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Edited by ChrisR on 20-12-2007 17:13
 
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Eric Fisher
#16 Print Post
Posted on 21-12-2007 00:06
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 Hi Chris,

Thanks for the second photo. This fly is definitely a Lampria, probably L. dives (Wiedemann).
 
Guenter
#17 Print Post
Posted on 21-12-2007 10:09
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 Thanks for the explanations Eric. I just remembered that I had seen this photo on Geller-Grimm's homepage and didn't have a closer look at it, but the Antenna clearly indicate the different subfamilies!
Günter Schwendinger
 
ChrisR
#18 Print Post
Posted on 22-12-2007 13:33
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 Thanks everyone - I have a few more French Guyanan asilids here so I might post them over the Christmas period if anyone is interested Smile
 
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Eric Fisher
#19 Print Post
Posted on 23-12-2007 19:30
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 Thank you Chris. It would be great to see more French Guyanan robber flies.
 
ChrisR
#20 Print Post
Posted on 23-12-2007 22:01
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 All done - posted as individual threads this time, to reduce confusion - and with one extra specimen from a batch of Malaysian specimens I received a few years ago. Hope you enjoy them Smile
 
http://tachinidae.org.uk
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