Friday, 13 September 2013

Metadon inermis (Loew, 1858)

NOTE - I'm saying that this is Metadon inermis, but in truth I was told that it was either this or Metadon mynthes (both previously Microdon, but with the genus revision being put forward this year by the person who identified it, I'm being progressive). I'm going with M. inermis because not only did the secondary-contact specialist note that it was more likely, but it is also much more widely recorded, while M. mynthes, so far as I can tell, is limited to Guinea. Which is a good half-continent away from where this one was photographed. 

A not-very-good photo for you today:
Metadon cf. inermis, Chongwe, Lusaka, Zambia,
Photographed in Chongwe, Lusaka, Zambia, in March 2013. It's not a good enough picture to warrant telling you what with.
You may ask why, when this photograph doesn't exactly give great character, this image is being uploaded. Perhaps, as with Enoplognatha ovata, generally considered to have been formally described before the start date for formal descriptions of animals, it is of taxonomic note? 

No. It's more along the lines of Dolichotachina caudata, Megistocera filipes and
Synagris proserpina, although not quite so dramatic. A good picture it may not be, but it is the only picture I can locate on the web of a living member of either species that this could be*. And I'm still not dismissing that it may not really be


Metadon inermis 
(Loew, 1858)

because that would be foolish.

One interesting aside, though, comes in comparison. Behold:


 This is a bee, Sphecodes, displaying a colour form common in Central African stinging insects. 

Look again at our (harmless) fly:





The size is different, closer in the fly to the similarly coloured Megachile bees from the same area, but the similarities between these two individuals was too much for me to pass up showing you Sphecodes.


Anyhow, onwards with the taxonomy: 


Microdontinae
Syrphidae         
Syrphoidea         
Aschiza                
Muscomorpha       
Brachycera              
Diptera                      
 Antliophora                 
Panorpida                       
Endopterygota                  
Eumetabola                           
Neoptera                                  
Manopterygota                           
Pterygota                                      
Dicondylia                                     
Insecta                                             
Hexapoda                                          
Arthropoda                                          
Ecdysozoa                                               
Protostomia                                               
Nephrozoa                                                   
Bilateralia                                                        
Eumetazoa                                                        
Animalia                                                             
Eukaryota                                                             

                                                                  
And that's all, folks!








* Reemer's article revising the oversized genus Microdon does also contain images of M. inermis pinned specimens, among other things.


For anyone trying to identify members of this subfamily, Reemer's key, mentioned above, is not only the most up-to-date resource I am aware of, but also available free. Happy times. 



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