Diptera.info

Thread subject: Diptera.info :: Lauxaniidae or Drosophilidae

Posted by Stephen on 17-11-2006 21:24

My latest point of confusion is how to tell Drosophilidae from Lauxaniidae.

So which is this fly?

I have only the one photo so I have posted it large.

Size, 4.2 mm to rear of wing. Attracted to lights, open area near woodlands, 1 October 2006. West Virginia USA.

Posted by Paul Beuk on 17-11-2006 22:38

It is the same genus as you had HERE, but maybe a more mature specimen. As you can see on the frons, on each side ther are two setae header=[setae] body=[seta<br /><img src='infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

header=[setae] body=[seta<br /><img src='infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

that are bent backwards. If it were Drosophilidae, there would be one additional setae that was bent forwards.

Posted by Stephen on 18-11-2006 15:11

Thanks, Paul, that tip about the two pairs of setae versus three is going to be very helpful to me. I am going to go back now through all my Drosophilid photos and see if I have any Lauxaniids lurking there!