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Diptera.info :: Identification queries :: Diptera (adults)
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Stomina calvescens ♀ (Tachinidae)
rafael_carbonell
#1 Print Post
Posted on 29-08-2022 22:16
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Location: Beuda, Girona, Catalonia
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 On a wall, 26.viii.2022 (Spain: Girona: Beuda), determination using Mosch Web [Cerretti, Tschorsnig, Lopresti, Di Giovanni. ZooKeys 205: 5–18. doi: 10.3897/zookeys.205.3409]
rafael_carbonell attached the following image:


[261.64Kb]
Edited by rafael_carbonell on 30-11-2023 19:35
 
rafael_carbonell
#2 Print Post
Posted on 29-08-2022 22:17
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 ...
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Edited by rafael_carbonell on 29-08-2022 22:22
 
rafael_carbonell
#3 Print Post
Posted on 29-08-2022 22:23
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 ...
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rafael_carbonell
#4 Print Post
Posted on 29-08-2022 22:24
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 [TAXA OUTPUT]

Acemya Robineau-Desvoidy, 1830: 202
Stomina Robineau-Desvoidy, 1830: 411

[SELECTED CHOICE]

(1) EYE
-Eye bare or nearly bare: hairs, if present, not longer than diameter of 2 eye facets
(2) OCELLI
-ocelli present
(25) DORSAL PART OF OCCIPUT
-postero dorsal part of head without black setulae behind postocular row
(39) SCUTUM: PRESUTURAL STRIPES
-... with three, four or five presutural dark vittae, or uniformly covered with pruinosity
(44) PRESUTURAL ACROSTICHAL SETAE
-... two ...
(45) PRESUTURAL DORSOCENTRAL SETAE
-... two ...
(46) POSTSUTURAL DORSOCENTRAL SETAE
-... three ...
(52) SCUTELLUM COLOUR
-scutellum mainly black, more or less red or yellowish apically
-scutellum mainly red or yellowish
(73) BEND OF M
-bend of M forming a distinctly obtuse angle
(76) RATIOS OF VEIN M
-section of M between R-M and DM-Cu visibly longer than section between DM-Cu and bend of M
(77) CROSSVEIN DM-Cu
-crossvein DM-Cu not exceptionally oblique
(78) PETIOLE [STALK]
-cell r4+5 open [or vein m not reaching wing margin]
(88) PRUINOSITY OF ABDOMEN
-abdomen entirely covered by dense, sometimes not uniform, pruinosity, tessellated or showing dark patches


https://www.inaturalist.org/observations/132483351
 
Zeegers
#5 Print Post
Posted on 30-08-2022 07:03
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Location: Soest, NL
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 Difficult. There seem to be only 2 post IA on thorax, that should be a big clue (favouring Acemyiini, I guess).
Any chance of a pic showing lateral view, o matter how bad ?

Theo
 
rafael_carbonell
#6 Print Post
Posted on 30-08-2022 15:18
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 No, sorry :-( the camera could'nt get into the wall, to take a shot more ventrally.

There are clearly 2 post sutural intra-alar setae. If I add two postsutural intra-alar setae separated by a distance equal at most to distance between the first seta and the suture, then it is also left Acemya and Stomina.

I add another dorsolateral view.
rafael_carbonell attached the following image:


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Edited by rafael_carbonell on 30-08-2022 16:03
 
John Carr
#7 Print Post
Posted on 30-08-2022 15:39
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 The first flagellomere of Acemya is pointed at the upper tip, not rounded as usual in Tachinidae.
 
http://www.flickr.com/photos/31715949@N00
rafael_carbonell
#8 Print Post
Posted on 30-08-2022 16:07
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 Thanks, John, then it's not Acemyia
rafael_carbonell attached the following image:


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Edited by rafael_carbonell on 30-08-2022 16:08
 
rafael_carbonell
#9 Print Post
Posted on 31-08-2022 17:49
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 Even if the view of the flagellomere is not good, Acemyia looks quite different.
 
Zeegers
#10 Print Post
Posted on 31-08-2022 19:04
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 Well, it could be a female Stomina, but I am not totally sure.

Theo
 
rafael_carbonell
#11 Print Post
Posted on 25-01-2023 00:20
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 Ok
 
rafael_carbonell
#12 Print Post
Posted on 29-11-2023 19:28
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 Repeated the key

(1) EYE
-Eye bare or nearly bare: hairs, if present, not longer than diameter of 2 eye facets
(2) OCELLI
-ocelli present
(25) DORSAL PART OF OCCIPUT
-postero dorsal part of head without black setulae behind postocular row
(30) APEX OF FIRST FLAGELLOMERE
-non-sharpened apex
(39) SCUTUM: PRESUTURAL STRIPES
-... with three, four or five presutural dark vittae, or uniformly covered with pruinosity
(44) PRESUTURAL ACROSTICHAL SETAE
-... two ...
(45) PRESUTURAL DORSOCENTRAL SETAE
-... two ...
(46) POSTSUTURAL DORSOCENTRAL SETAE
-... three ...
(47) POSTSUTURAL INTRA-ALAR SETAE
-two postsutural intra-alar setae separated by a distance equal at most to distance between the first seta and the suture
(52) SCUTELLUM COLOUR
-scutellum mainly black, more or less red or yellowish apically
-scutellum mainly red or yellowish
(73) BEND OF M
-bend of M forming a distinctly obtuse angle
(76) RATIOS OF VEIN M
-section of M between R-M and DM-Cu visibly longer than section between DM-Cu and bend of M
(77) CROSSVEIN DM-Cu
-crossvein DM-Cu not exceptionally oblique
(78) PETIOLE [STALK]
-cell r4+5 open [or vein m not reaching wing margin]
(88) PRUINOSITY OF ABDOMEN
-abdomen entirely covered by dense, sometimes not uniform, pruinosity, tessellated or showing dark patches.

Taxa output= Stomina Robineau-Desvoidy, 1830: 411

Somebody else wrote me it was not S.caliendrata

https://www.inaturalist.org/observations/132483351
Edited by rafael_carbonell on 29-11-2023 19:29
 
eklans
#13 Print Post
Posted on 30-11-2023 12:05
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Location: Franconia, Germany
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 The frons seems to be bigger than an eye?
Abdomen seems to be black lateral - not yellowish or red (1st img.)?
Fore tarsomere 5 seems to be approx. as long as wide (2nd img)?
And if the claws of the fore tarsus are at most half as long as tarsomere 5 it could be the female Stomina calvescens
from Ceretti (2010): I tachinidi della fauna italiana
Edited by eklans on 30-11-2023 12:11
Greetings, Eric
 
rafael_carbonell
#14 Print Post
Posted on 30-11-2023 19:31
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 Thank you Eric :-)
I have found and studied the key and agree it must be calvescens
Best wishes
Rafael
rafael_carbonell attached the following image:


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Edited by rafael_carbonell on 30-11-2023 19:34
 
Zeegers
#15 Print Post
Posted on 03-12-2023 08:29
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Location: Soest, NL
Posts: 19287
Joined: 21.07.04

 Females Stomina are very tricky ….
 
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