Thread subject: Diptera.info :: Which Sciapus?

Posted by Kahis on 05-10-2007 23:23
#7

Hmm. Meuffels & Grootaert (1990) says for S. zonatulus "Femur I without bristles or setae, bearing only very short white hairs; posteriorly near tip a few black bristlelike setae".

How old is your key? The names in this difficult group have been shuffled a few times before 1990. S. contristans sensu d'Assus-Fonseca 1978 is the real S. contristans which is not synonymous with S. zonatulus.

The male of S. longulus has long, strong bristles on the fore femur (length >2x width of the femur). More likely is S. basilicus, which is very close to S. zonatulus. The two species differ in the position of the small setae of fore basitarsus (barely visible in the pictures), details or male genitalia, and size. The last two characters can not be judges from your photos.

Cheers,
Jere K.