Thread subject: Diptera.info :: Chrysops key character

Posted by Tony T on 06-06-2007 21:49
#1

3 June 2007 New Brunswick Canada.
A very useful, and convenient, character for identifying female Chrysops spp. is the absence (top image C. calvus)) or presence (bottom C. mitis) of a yellow pollinose stripe on the clypeus. These character states readily divide the North American spp. into 2 more manageable groupings.

Posted by Zeegers on 07-06-2007 07:37
#2

As nicely illustrated.

In the Old World, unfortunately, the majority is of the lower type.

Theo