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Diptera.info :: Identification queries :: Diptera (adults)
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Dasyhelea sp. n°2
pat_der2003
#1 Print Post
Posted on 02-08-2023 03:27
Member

Location: Paris area, France
Posts: 1731
Joined: 20.08.07

Hello everyone,

What I see is :

Subgenus :

1. Male genitalia without an envelope covering entire aedeagus
2. Wing with two radial cells
3. Clypeus divided into separate sclerites => Pseudoculicoides (in part)
pat_der2003 attached the following image:


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pat_der2003
#2 Print Post
Posted on 02-08-2023 03:28
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Location: Paris area, France
Posts: 1731
Joined: 20.08.07

wings
pat_der2003 attached the following image:


[135.65Kb]
Edited by pat_der2003 on 02-08-2023 03:29
 
http://www.patderennes.org/
pat_der2003
#3 Print Post
Posted on 02-08-2023 03:30
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Location: Paris area, France
Posts: 1731
Joined: 20.08.07

clypeus
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pat_der2003
#4 Print Post
Posted on 02-08-2023 03:33
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Location: Paris area, France
Posts: 1731
Joined: 20.08.07

Then I tried to illustrate genitalias ... But it is more like a blur picture ... isn't ?

1. gonostylus single
3. gonostylus simple
... ?
pat_der2003 attached the following image:


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Edited by pat_der2003 on 02-08-2023 03:40
 
http://www.patderennes.org/
pat_der2003
#5 Print Post
Posted on 02-08-2023 06:29
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Location: Paris area, France
Posts: 1731
Joined: 20.08.07

Sorry, this is trying to use this key : https://doi.org/10.2478/v10200-012-0009-8

Unfortunately, ... and obviously ... Shock I didn't use this technique :

All specimens were preserved in 75% ethanol, then subsequently cleared in phenol-ethanol and mounted on microscope slides in
phenol-Canada balsam by the methods described in WIRTH & MARSTON (1968).

Edited by pat_der2003 on 02-08-2023 08:07
 
http://www.patderennes.org/
pat_der2003
#6 Print Post
Posted on 03-08-2023 19:21
Member

Location: Paris area, France
Posts: 1731
Joined: 20.08.07

Hello, I'm back with th dgenitalia following this protocol : 24h in lactic acid then mounted in Euparal.


I think it looks better, close to the pictures in this key ! Smile
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pat_der2003
#7 Print Post
Posted on 04-08-2023 06:30
Member

Location: Paris area, France
Posts: 1731
Joined: 20.08.07

Following the previous key, I see :

1. Male genitalia without an envelope covering entire aedeagus
2. Wing with two radial cells
3. Clypeus not divided into separate sclerites => Dicryptoscena

then :

1. Fifth palpal segment as long as fourth palpal segment, with single row of long setae

2. Gonostylus with slender apex

3. ???

I am hesitating between Dasyhelea notata and lucida/stellata, but my preference goes to the description of male notata ...


Althought there are two other european species not in this key : D. fulvosa REMM and D. kurensis REMM ... so ?

EDIT : in this paper, it is said that
D. fulvosa is present from Czech Republic and Azerbaijan.
Dasyhelea kurensis is present from Ukraine (Crimea), Romania, Azerbaijan.
Edited by pat_der2003 on 04-08-2023 07:52
 
http://www.patderennes.org/
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Don't suppose anyone knows anwhere selling a copy of Contributions to a Manual of Palaearctic Diptera 2? Always wanted a copy.... Smile

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