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Diptera.info :: Identification queries :: Diptera (adults)
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Muscidae NL > Helina deleta???
jck
#1 Print Post
Posted on 16-05-2022 16:14
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Can anyone help with this male? Apeldoorn, NL on 27 April, 2022.

James
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[160.6Kb]
Edited by jck on 25-05-2022 12:03
 
jck
#2 Print Post
Posted on 16-05-2022 16:14
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2
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jck
#3 Print Post
Posted on 16-05-2022 16:15
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eklans
#4 Print Post
Posted on 16-05-2022 17:36
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Location: Franconia, Germany
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Hi James, could be we are lucky: I've found a similar female some days ago and I've keyed (Gregor et al) it as Helina deleta:
Legs mainly black
Wing base distincly yellow
2-4 dc
3-5 ac on t3
May to July...
Edited by eklans on 16-05-2022 17:38
Greetings, Eric Kloeckner
 
Nikita Vikhrev
#5 Print Post
Posted on 16-05-2022 18:36
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Check radial node of wings. With setulae?
Nikita Vikhrev - Zool Museum of Moscow University
 
jck
#6 Print Post
Posted on 16-05-2022 21:34
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Thank you both. Helina deleta would be an exceptional find, Erik, as it has not yet been recorded in the Netherlands. I am attaching a photo of the wingbase but I doubt it's good enough. Look forward to your reactions.

James
jck attached the following image:


[173.83Kb]
 
jck
#7 Print Post
Posted on 25-05-2022 12:04
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Can anyone add to this discussion?

James
 
eklans
#8 Print Post
Posted on 07-08-2022 12:37
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Location: Franconia, Germany
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Hi James, I've checked all possible Helinas following Gregor et al's key 8 Radial node setulose and this is the result (with one excluding criterion for our flies):
cilipes => frons male broad
trivittata => frons male broad
decipiens => 3dc post, legs ±yellow
moedlingensis => frons male broad
fratercula => 3dc post
vicina => legs ±yellow
pollinosa => South Europe
consimils => 3dc post, legs ±yellow
crinita => legs ±yellow
ciliatocosta => legs ±yellow
confinis => legs ±yellow

Compared to the description of delete we can see:
? longest aristal hairs about 2x postpedicel
y pra > p npl
y wings intensively yellow basally
y calypters conspicuously yellow
y legs black
y? tibia II 3 p
y tibia III 3-5 av, 2 ad

your male
y? eyes densely pale haired
y very narrow fronto-orbital plates separated by linear frontal vitta
y? tibia I 0 p
? tibia III few elongated p setae
? abdomen densely grey dusted, 2 pairs of spots

my female
y eyes only sparesly haired
? tibia I 1 p
y tibia III no elongated p setae
? abdomen grey dusted, shifting black spots
You'll find the thread here:
https://diptera.i..._id=105979

Résumé:
I think, both flies are Helina deleta but I'm not an expert!


Greetings, Eric Kloeckner
 
jck
#9 Print Post
Posted on 07-08-2022 16:28
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Eric, thank you so much for your detailed study of this male. I will see what they say on the Dutch forum (Waarneming.nl) and I will report back if I get an answer. I doubt they will accept a new species without a specimen.

James
 
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