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Diptera.info :: Identification queries :: Diptera (adults)
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Helina species = Helina confinis
johnes81
#1 Print Post
Posted on 09-09-2017 21:57
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Location: Berlin, Germany
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Berlin - mid August - 6.5 mm Female

I could be wrong but I suspect this to be Helina. I have no keys to this genus. I would like to have a copy of The Muscidae of Central Europe. Meantime, I see four dots on the abdomen, so Helina quadrinotata?

PS the ovipositor (genitalia) is better than counting hairs. just ask and I'll post the ovipositor.
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Edited by johnes81 on 14-09-2017 00:03
John and Nini. Naturalists not experts.
 
johnes81
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Posted on 09-09-2017 21:57
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dorsal
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johnes81
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Posted on 09-09-2017 21:57
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microscope - thorax
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johnes81
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Posted on 09-09-2017 21:58
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microscope - lateral
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johnes81
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Posted on 12-09-2017 11:47
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I have found some keys from a book at Google Books. I only get a few pages of a preview. I have to apologize for my inadequate post. I see that we will need many photos of this species to be able to determine a species.

I will update this post with more adequate details. I think that we can eliminate quadrinotata. I am suspecting Helina parcepilosa is a possibility.

I will add more photos...
Edited by johnes81 on 12-09-2017 11:48
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Stephane Lebrun
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Posted on 12-09-2017 13:59
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No need to apologize. It's true Helina are difficult from picture since some details can't usually be seen (like setulae on ventral side of radial node, beneath scutellum etc).
If the arista is plumose, I would tend to say H. parcepillosa as well (I guess 4 ks).
Stephane.
 
johnes81
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Posted on 12-09-2017 17:32
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Hello Sir Stephane, Thank You for your Time and Expertise. I didn't realize how difficult it is to id Helina. I am sorry about my sloppy post.

I've spent some time at the microscope today. I'll post some photos now.

first photo is of the underside of the scutellum:
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johnes81
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Posted on 12-09-2017 17:32
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lateral
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johnes81
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Posted on 12-09-2017 17:33
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eyes are sparsely hairy, so I suppose bare fits as well.
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johnes81
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Posted on 12-09-2017 17:34
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palpi are black. The tiip of the palpi seems pale in certain angles with strong lighting.
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johnes81
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Posted on 12-09-2017 17:34
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ventral/underside of wings. I see a couple of places with hairs:
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johnes81
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Posted on 12-09-2017 17:35
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fore-leg
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johnes81
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Posted on 12-09-2017 17:35
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mid leg
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johnes81
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Posted on 12-09-2017 17:36
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hind leg
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johnes81
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Posted on 12-09-2017 17:36
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ovipositor
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johnes81
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Posted on 12-09-2017 17:41
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arista are definitely plumose:
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johnes81
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Posted on 12-09-2017 17:42
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abdomen has brown spots
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johnes81
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Posted on 12-09-2017 23:09
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here is a better view of the ovipositor.
I find it difficult to deal with an ovipositor. sometimes my dissection is awful. I broke the end off from the ovipositor. sorry. I teach myself how to dissect, so I am not familiar with a proper procedure. at least I have photos of it Smile

these are a dorsal view of the oviposior from the en of the abdomen to the tip of the ovipositor (3 photos) plus spermathecae:
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johnes81
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Posted on 12-09-2017 23:10
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2
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johnes81
#20 Print Post
Posted on 12-09-2017 23:10
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3
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