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Diptera.info :: Identification queries :: Diptera (adults)
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Dolichopodidae - Hercostomus exarticulatus? - Greece
Xeroporcellio
#1 Print Post
Posted on 15-10-2023 11:35
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 Hello,

I have the following female Dolichopodidae from Lesvos, Greece. Using Grichanov 2007 I managed to identify the genus as Hercostomus and, using the key for the females, as H. exarticulatus. What do you believe? Below, I provide photos of the specimen, as well as the characters I used in the key:

1) Femora yellow.
2) Lower postocular setae light.
3) Antennae entirely black.
4) Fore tibia without median posteroventral seta.
5) Proboscis dark.
6) Wing veins R4+5 and M1+2 convergent, at least at apex.
7) Scutellum bare.
8) Metepimeron black.
9) Basal segment of antennal stylus not thickened at apex.
Xeroporcellio attached the following image:


[44.17Kb]
 
Xeroporcellio
#2 Print Post
Posted on 15-10-2023 11:35
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 Arista.
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Xeroporcellio
#3 Print Post
Posted on 15-10-2023 11:35
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 Ciliae-1.
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Xeroporcellio
#4 Print Post
Posted on 15-10-2023 11:36
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 Ciliae-2.
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Xeroporcellio
#5 Print Post
Posted on 15-10-2023 11:36
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 Fore tibia.
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Edited by Xeroporcellio on 15-10-2023 11:37
 
Xeroporcellio
#6 Print Post
Posted on 15-10-2023 11:37
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 Head.
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Xeroporcellio
#7 Print Post
Posted on 15-10-2023 11:37
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 Hind femur.
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Xeroporcellio
#8 Print Post
Posted on 15-10-2023 11:38
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 Mouthparts.
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Xeroporcellio
#9 Print Post
Posted on 15-10-2023 11:38
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 Pleurae.
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Xeroporcellio
#10 Print Post
Posted on 15-10-2023 11:39
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 Postpedicel.
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Xeroporcellio
#11 Print Post
Posted on 15-10-2023 11:39
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 Scutellum.
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Xeroporcellio
#12 Print Post
Posted on 15-10-2023 11:39
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 Thorax.
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Igor Grichanov
#13 Print Post
Posted on 16-10-2023 10:29
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 It is not H. exarticulatus.
There is a recently described species with similar characters. Unfortunately, its female was poorly described.
Hercostomus thraciensis Kechev et Negrobov, 2015: Acta Zoologica Bulgarica 67 (2): 200. Type locality: Bulgaria: Basha site, northwest of the town of Chirpan, 148 m. Palaearctic: Bulgaria, Israel, Turkey.
Igor Grichanov
 
https://doli.vizrppnsuppl.com/
Xeroporcellio
#14 Print Post
Posted on 16-10-2023 11:12
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Igor Grichanov wrote:
It is not H. exarticulatus.
There is a recently described species with similar characters. Unfortunately, its female was poorly described.
Hercostomus thraciensis Kechev et Negrobov, 2015: Acta Zoologica Bulgarica 67 (2): 200. Type locality: Bulgaria: Basha site, northwest of the town of Chirpan, 148 m. Palaearctic: Bulgaria, Israel, Turkey.


Thanks a lot for the reply! Unfortunately, currently, we only have this one female. However, my colleague will try to collect more next spring!
 
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