Posted by Steve Gaimari on 18-01-2010 17:12
#9
viktor j nilsson wrote:
Are the palpi black? Chamaemyiids are risky, especially females. But using Bei-Bienko, the combination 1)palpi black; 2)tibiae and tarsi yellow and 3) yellow spot near base of arista on 3rd segment of antenna, quickly keys out C. emiliae, which is an eastern species that is listed in the finnish draft catalogue. Might be correct? Maybe Steve Gaimari has something to say about this?
Females of Chamaemyia (and Leucopis) are notoriously difficult. Especially when using Bei-Bienko! But really, even with Tanasijtshuk's 1986 work, most females are impossible. The male genitalia are the thing! Only the very obvious species are possible from photographs, in any case.