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Photo#151849
Syrphid Fly - Melanostoma mellinum - female

Syrphid Fly - Melanostoma mellinum - Female
Lacey (near Olympia), Thurston County, Washington, USA
October 8, 2007
This fly has striking acid green halteres. Doing some research online, I found two species: Melanostoma scalare and M. mellinum. Some sites say that only M. scalare have the acid green halteres, some say only M. mellinum. Some say only females have the green halteres, some say only males. Is there anyone out there with a definitive book that could check this? Are there any diptera experts who can tell M. mellinum from M. scalare??

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Syrphid Fly - Melanostoma mellinum - female Syrphid Fly - Melanostoma mellinum - female

Moved
Moved from Melanostoma.

Moved
Moved from Syrphid Flies.

Yes
A female Melanostoma it is!
Greetings,

one question answered
As you can see here, one of the above questions is now answered: females can have acid green halteres.

 
Actually, you already had that information
with this image! Females have eyes that do not meet. Males have large eyes that touch each other at the top of the head. This is a female with those famous halteres!

 
guys and dolls
Oops. Duh. I knew that. Thanks John and Jane.

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