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 Bombyliidae - Dematoneura sp. (Gabon)
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| jorgemotalmeida |
Posted on 22-09-2007 11:39
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 Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
This is another spectacular fly from Gabon. It was taken by Axel Rouvin, that authorized me to show the photo. Taken on 15 AUg. 2007 in Estuaire - Gabon. Is it possible to know the genus level, at least.. 
Edited by jorgemotalmeida on 24-09-2007 12:21 |
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| David Gibbs |
Posted on 24-09-2007 10:12
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 Member Location: Bristol, UK Posts: 833 Joined: 17.06.06 |
based on my specimens from Europe (i have no Afrotropical specimens), i would call this Dematoneura, 2 species (choreutes(Bowden,1964) and meridionalis (Hesse, 1956)) are listed for central Africa but there are likely to be numerous undescribed taxa in the region. |
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| jorgemotalmeida |
Posted on 24-09-2007 12:19
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
there is no info about Dematoneura in the net. Can you tell if is know th ehosts for genus Demanoteura? Thank you. |
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| David Gibbs |
Posted on 24-09-2007 14:39
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Member Location: Bristol, UK Posts: 833 Joined: 17.06.06 |
jorgemotalmeida wrote: there is no info about Dematoneura in the net. not surprising, very little is known about most Beeflies, the tribe Xeramoebini is recorded from Diptera, spiders, bees, Sphecids, Braconids, vespid and grasshoppers (Yeates & Greathead 1997) so just about anything. why do you want to know? the very non-specific nature of beefly parasitoidism makes it of little value for identification, even if we did know more. |
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| jorgemotalmeida |
Posted on 24-09-2007 16:27
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Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
ok. I see there are no specific hosts. It turns more hard the things for us.  But it is a good way for species population surviving better. However, I know that there are in some beeflies (some) specificity on hosts. For example "Exhyalanthrax on pupiparous higher Diptera, Systropus on saddleback moths (Limacodidae), Geron on Psychidae.." (info in HBS museum) |
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| David Gibbs |
Posted on 24-09-2007 17:34
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Member Location: Bristol, UK Posts: 833 Joined: 17.06.06 |
jorgemotalmeida wrote: However, I know that there are in some beeflies (some) specificity on hosts. For example "Exhyalanthrax on pupiparous higher Diptera, Systropus on saddleback moths (Limacodidae), Geron on Psychidae.." (info in HBS museum) are you sure such apparent host specificity is not merely an artifact of very few records, often emanating from one individual sudying a particular economically important insect. Exhyalanthrax - records for 6 species 15 citations diptera, braconid, pyralid, noctuid Systropus - 8 species, 13 citations, all Limacodids so this genus does seem to be more specific, but one species recorded from 3 different genera of family. Geron - 8 species, 16 citations, Ichnumonid, pyralid, noctuid, tortricid, tachinidae, thus a range of moths and, i would guss, any parasitoid of these moths. so of these three genera, only one can be tied down to a single Order of host! i suspect that adult beeflies are adapted to search out localities where their favoured hosts are likely to be pupating. However, if a beefly larvae happens to find a larvae of some other insect of the right size it will attach and be able to complete development in many cases. Lepidoptera and economically important insects (and their parasitoides) feature prominently in the list because more work has been done on the early stages of these species than any others. |
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