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Diptera.info :: Identification queries :: Diptera (adults)
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Agromyzidae or Chloropidae?
Annemiek
#1 Print Post
Posted on 26-07-2022 11:41
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Location: SE part of the Netherlands
Posts: 17
Joined: 01.09.21

I saw these flies on a hedge (probably Prunus lusitanica) in the utmost South of the Netherlands in April 2022.
Can someone tell me with species or genus this is? Thank you.

Best regards,
Annemiek van Dijk
Annemiek attached the following image:


[169.61Kb]
 
Annemiek
#2 Print Post
Posted on 26-07-2022 11:52
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Location: SE part of the Netherlands
Posts: 17
Joined: 01.09.21

Another image of these flies
Annemiek attached the following image:


[135.3Kb]
 
Jan Maca
#3 Print Post
Posted on 26-07-2022 12:45
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Chloropidae. Thaumatomyia?
 
Annemiek
#4 Print Post
Posted on 27-07-2022 20:19
Member

Location: SE part of the Netherlands
Posts: 17
Joined: 01.09.21

Thank you Jan Maca. It seems to have the flat-topped scutellum. I did not recognize it because of the rear appendices but I have learned now that those are pheromone sacks, so this would be a male Thaumatomyia (maybe T. notata?)

 
von Tschirnhaus
#5 Print Post
Posted on 02-09-2022 18:58
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Location: Bielefeld, Germany
Posts: 416
Joined: 04.11.07

Chloropidae: Thaumatomyia spec. is correct. Not all Thaumatomyia species possess those peculiar eversible testicle-like odor sacs (= vesicles), e.g. T. trifasciata, rufa and hallandica males lack them. Boppré & Pitkin (1988, Entomologia generalis 13(1-2): 81-85), Steyskal (1945, Bull. Brooklyn ent. Soc. 40(2): 48), and Kotrba (2006, Europ. J. Ent. 106(1): 57-62) wrote about attractions, repellents, odors, pheromones, display, fight, wing waving, copulation and alcaloids in connection with Thaumatomyia. It is well known that the huge overwintering swarms of Th. notata in buildings and hollow old trees let behind smelling bio-chemicals which attract one or more autumns later again new masses of those flies. Thaumatomyia [ancient Greek] means "noteworthy fly", notata [Latin] means "should be noted", too. Meigen (1930) selected a well agreeing name and he knew the aggregation phenomenon. I collected 278 articles and notes published about it during now 190 years [see database].
Edited by von Tschirnhaus on 21-11-2022 20:55
 
http://www.uni-bielefeld.de/biologie/sammlung/inde
Annemiek
#6 Print Post
Posted on 22-11-2022 09:35
Member

Location: SE part of the Netherlands
Posts: 17
Joined: 01.09.21

Thank you Herr von Tschirnhaus for the interesting additional information and literature links for Thaumatomyia biology.
Thaumatomyia notata is worth noting, both for other diptera and for entomologists!

Best regards,Annemiek van Dijk
 
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Thanks, Jan Willem! Much appreciated. Grin

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Yes, dipterologists from far abroad, please buy your copy at veldshop. Stamps will be expensive, but he, the book is unreasonably cheap Smile

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Can any1 help out with a pdf copy of 1941 Hammer. Vidensk. Meddel. Dansk Naturhist. Foren. 105; thank you

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Found! https://www.veldsh
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Lis - This is vol.11 (eleven) and is 346 pages. Sorry, don't have a copy.

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