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Diptera.info :: Identification queries :: Diptera (adults)
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Eristalinus aeneus/sepulchralis
BubikolRamios
#1 Print Post
Posted on 18-06-2013 22:02
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Location: Slovenia
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namely aeneus: http://agrozoo.ne...nus-aeneus
namely sepulchralis: http://commons.wi...ext=Search

I don't see much difference. How to tell them apart ?
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Tony Irwin
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Posted on 19-06-2013 20:29
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The fact is they're not always easy - it looks like both sites have included at least one misidentified picture. [Never trust any picture captions except Diptera.info!TumbsUp] In aeneus, the eyes of the male meet on the frons, in sepulchralis they are separate. In females, the eyes of aeneus are bare in the lower half, those of sepulchralis are entirely hairy. E.aeneus tends to be larger and less "wrinkly" than sepulchralis, and sepulchralis often has dull patches on the tergites, while aeneus is always shiny. In Britain, aeneus is a coastal species, while sepulchralis is associated with freshwater.
Edited by Tony Irwin on 19-06-2013 20:35
Tony
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Tony Irwin
 
BubikolRamios
#3 Print Post
Posted on 20-06-2013 06:22
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In females, the eyes of aeneus are bare in the lower half, those of sepulchralis are entirely hairy


female right ? http://agrozoo.ne...e4e18e8f79
corensponding eye (sepulchralis then ? Also not in costal area as oposite to other two images on agrozoo.net that was found actualy on sea coast):
BubikolRamios attached the following image:


[67.13Kb]
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Tony Irwin
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Posted on 20-06-2013 20:07
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The coastal vs. non-coastal distinction is not absolute, and it can sometimes be very difficult to know whether hairs are on the eyes or just around them (I can't decide on this photo). Having said that, this specimen does look more like sepulchralis, and was one of the misidentified specimens I referred to.
Tony
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Tony Irwin
 
BubikolRamios
#5 Print Post
Posted on 20-06-2013 21:46
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Location: Slovenia
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Thanks.
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