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"[Zatwarnicki - brown mesonotum with two narrow presutural grey stripes between ac and dc, narrow post-sutural stripe outside posterior dc; scutellum brown, often with basal and apical grey spots. Nartshuk - Face of male concave, reddish brown; genae and frons grey. My notes – acs large, 3-4 paris; haltere yellow] "

this is what i thought was the description for cribrata. so the bold name caviceps is above the description? for some reason, i thought the name is supposed to be at the end of the description. like so:
bla bla bla ... caviceps

so, then, i keyed it to caviceps but read the name cribrata instead.

meantime, i looked at the specimen and yes the genitalia are very small. I have trouble with tiny flies too. I'll take my time with this one.

one more thing, if the description that i have posted here is for caviceps, then the keys work. However, the names should come after the description not before it.