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just agreeing with genus really. I can't tell the difference between this and my possible mellinum
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The area behind the frons appears to be black Possibly mellinum ????
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yes here's mine: http://www.ispot.org.uk/node/256166?nav=users_observations
But your other Melanostoma was a male, and the appearance of the sexes is quite different in Melanostoma: Females do not have the squared spots on the abdomen, but have the distinctive triangular spots of this specimen. This is definitely a female scalare; the male is perhaps mellinum, but not certain.
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yes I see that clearly now, does the frons area need a hand lens or can you more or less do that with macro photos?
A hand lens would be okay for picking it out, as is a good macro photo. As always, though, you are looking for as many relevant features as possible, for a certain ID. For example, this fly has a relatively long abdomen, whereas mellinum tends to be a bit shorter. Female mellinum are often very dark, as well, and can lack spots completely.
and yours has a more pointed abdomen whereas my male is rounded, another gender not species difference though?
If the weather's ok tomorrow I'll see if there's a female about
The extensive dust spots on the frons are typical of female scalare; on mellinum they are much smaller. The yellow antenna base is typical of scalare, too.
thanks to you all very interesting , regards keith
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