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I am interested to know why this female has strange 'bumps' on the last segments of the abdomen Ectemnius.

Separated eyes seem to be no guarantee of being a female if you check the 'intersex' examples in the gallery.

http://www.dipter...to_id=2601

http://www.dipter...to_id=1678

I have a photo of one similar to the dark one in the last link which I thought could be an intersex.. I don't seem to be able to get the photo down to the acceptable size but here's the tail end..