Thread subject: Diptera.info :: 081_ID? (Siphona ingerae)

Posted by Mucha Fero on 04-04-2011 17:02
#1

Please identify 081_ID flies. Slovak Republic, Malá Fatra-Terchová. Thank you very much for your help. Best regards! Fote date: 02.04.2011.

images.graphic4life.net/images/4hp57zou1fconss2j3y0.jpg

images.graphic4life.net/images/psyz9wnh8u1n97fmpou.jpg

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images.graphic4life.net/images/hfalhun3qp7giq4zvcof.jpg

Edited by Mucha Fero on 18-04-2011 18:10

Posted by neprisikiski on 04-04-2011 17:22
#2

It looks like Siphona ingeriae, Tachinidae.

Posted by Mucha Fero on 04-04-2011 18:25
#3

neprisikiski wrote:
It looks like Siphona ingeriae, Tachinidae.


Erikas thank you very much.

Posted by Zeegers on 05-04-2011 09:56
#4

Well spotted, Erikas !


Theo

Posted by ChrisR on 05-04-2011 09:59
#5

Which features make it S.ingeriae? Long tarsal claws? :)

Edited by ChrisR on 05-04-2011 10:00

Posted by neprisikiski on 05-04-2011 12:13
#6

I see several characters, including long tarsal claws, distinctly vittate thorax, entirely dark abdomen, partly darkened all femora and others. I cannot see anterior preapical seta on the second femur, that characterizes this species, but this could be the reaseon of bad focus. By the way, it is the most abundunt species of the maculata group!

Posted by ChrisR on 05-04-2011 13:14
#7

Very interesting - here it is incredibly rare. I seem to only catch S.geniculata, cristata or maculata here :(

Posted by Zeegers on 05-04-2011 13:18
#8

'the most abundant species' !?
That explains a lot ! It is incredibly rare here as well.
So don't worry, Chris.


Theo

Posted by ChrisR on 05-04-2011 13:22
#9

Yes, one of the biggest problems with the British Siphona is that collectors are highly unlikely to see anything other than the 3 commonest species and geniculata is by far the commonest species of them all. So improving the key and making it easier to spot the rarer species (including plenty of good secondary features) is something I am very keen to do :)

Posted by Kahis on 05-04-2011 14:08
#10

ChrisR wrote:
Very interesting - here it is incredibly rare. I seem to only catch S.geniculata, cristata or maculata here :(


I have to side with neprisikiski on this one: Siphona ingerae is not particularly rare in Finland, in fact it is among the more common Siphonas during its mid-spring flight time.

No comments on the identification of the Siphona in the pictures from me, it's been a while since I last looked at these very frustrating tachinids. I usually just give up after a while and send my material to specialists to be determined, sigh. With 15 species in my reference collection I am still unable to sort them out with any confidence (except a few species, S. ingerae included).

Posted by neprisikiski on 05-04-2011 14:25
#11

At least in my Malaise traps it is much more common than Siphona maculata itself. It is not the first time, when I hear about rarity of common species their in the West. In one Malaise trap from a suitable place that was exposed all season I usually obtain about 10 species of this genus, the most abundant are Siphona pauciseta, S. setosa, but S. genuculata is very common only in the western part of the country.

Posted by ChrisR on 05-04-2011 14:38
#12

I'd love to see more of the rare species - I am sure the familiarity would make it a little easier to split them. My problem here is that the rare stuff is so very rare in reference collections that I am never sure whether the material has been identified correctly :S

EDIT: I just checked ... I have seen precisely zero ingerae :D

Edited by ChrisR on 05-04-2011 14:45

Posted by Zeegers on 05-04-2011 15:45
#13

Here in the west, we are terrible in well developed quiet grasslands, which is the reasons that we are preforming so poor on Dexia, Prosena, Gonia (to a less extent) and species with similar habitat preference. This was not so bad some 50 years ago, I once pubished (in dutch) on the matter.
I think Siphona ingerae might fit in this picture (?), since it is a grassland species (?)

Theo

Posted by Kahis on 05-04-2011 19:38
#14

Zeegers wrote:
Here in the west, we are terrible in well developed quiet grasslands, which is the reasons that we are preforming so poor on Dexia, Prosena, Gonia (to a less extent) and species with similar habitat preference. This was not so bad some 50 years ago, I once pubished (in dutch) on the matter.
I think Siphona ingerae might fit in this picture (?), since it is a grassland species (?)


Just checked my own specimens of S. ingerae and it isn't very demanding here. Maybe the common theme is small openings in forests (but then again, that describes pretty much every place in Finland that isn't not IN a forest :)). The localities include the lawn of my parents summer house, marsh/bog meadows under a power line surrounded by full grown spruce forest, a dry meadow/house garden, a small riverside meadow and the margin of a small wheat field in mixed forest. Nothing fancy at all.

Posted by ChrisR on 05-04-2011 20:17
#15

Grrr :P