Diptera.info

Posted by eklans on 10-11-2021 14:31

Found that male Calliphoridae this morning on the compost (Ansbach, close to Frankenhoehe Nature Park, old deciduous forest, 2021-11-10).
I think it's a Calliphora but it seems strange to me:
- size > 10 mm
- abdomen green
- parafacialia fine hairs on upper half (if at all)
- orange hairs on postgena
- basicosta black
- anterior spiracle dark
- veins darkened
Can it be loewi?

Edited by eklans on 12-11-2021 09:46

Posted by eklans on 10-11-2021 16:47

Good question: I thought, Onesia should have hairy parafacialia like Bellardia, but that was an error! The prest ia is weak and the post ia seem to be partly broken. Onesia is it (though I fear I must not call it floralis)! |t
Thank you very much, Theo!

Posted by Zeegers on 11-11-2021 08:07

#10

Yes, but that soecies does not occur in this region :(

Theo

Posted by eklans on 11-11-2021 10:31

#11

Hopefully I may call it floralis as I've found evidence in my images using
Revision der Gattung Onesia (H. Schumann) - loosely translated:
"Crucial is also the distance between the compound eyes of the males: it's narrowest distance is longer than the distance between the hind ocelli"

Posted by eklans on 11-11-2021 10:35

#12

and another one:
"Important is the male's absence of the ventral bristle on the mid tibia"

@EsinM: Thank you! I've excluded Calliphora subalpina as it should have more marginal scutellars.

Posted by EsinM on 11-11-2021 11:33

#13

I have some very similar copies, I can send them along with the flies for Theo. Or I can take a photo. It's very interesting to find out who it is. Such flies are very active in autumn near beer traps.

Posted by eklans on 11-11-2021 14:28

#18

Your fly looks very similar to my Onesia - except the very blue colour of the abdomen and I'm not sure if there are 3 postsutural ia. But I couldn't find a Calliphora with dark basicosta, gena and a resembling frons - loewia's is narrower.

Posted by Zeegers on 12-11-2021 08:46

#19

Oh, you got it pinned !
Simply check the number of post IA bristles.
Or make a sharp pic of the thorax.

I mentioned before that none of the exernal featues by Schumann work in mu material ( well, they work 75 %)

Theo

Posted by eklans on 12-11-2021 09:51

#20

Thanks Theo, I remember your words about Schumann ;)
The pinned fly is from EsinM, Mordovia reserve, it resembles my fly.

Edited by eklans on 12-11-2021 09:55

Posted by EsinM on 12-11-2021 12:06

#23

My specimen has 2 post ia. But does your instance have 3 post ia? The color of the abdomen varies depending on the lighting and it can become very green.

Posted by eklans on 12-11-2021 12:22

#24

Yes, my fly also has 2 post ia! The first images made me think that the first bristles were broken. But it really seems our flies are the same species. What is the size of your specimen? Mine is conspicuously big - like the big females of Calliphora vicina.

Posted by eklans on 12-11-2021 16:21

#26

I've measured the oaken leaf on which it sat and the fly is 17-19 mm long!

Posted by Zeegers on 13-11-2021 08:21

#28

I am sorry to bother, but I am still not convinced.
On the left side, you can see a pore at the locality of the first post IA, suggesting it has been present but is broken off.

Theo

Posted by eklans on 13-11-2021 09:22

#29

Thanks for "bothering", Theo |t
I think, the Mordovian fly's first post ia looks very similiar so another photo of the thorax could perhaps help to see the pore.
What still remains is the size - ~18 mm would be a Cynomya's max. length. Onesia should have max. 12 mm?

Edited by eklans on 13-11-2021 09:22