Posted by Paul Beuk on 14-04-2011 17:33
#6
The gonostyli have pointed narrow hook-like extensions neat the base, which are not directed towards the tip.
Pherbellia alpina does not have these extensions, according to the figures in Rozkosny's 1991 key. The illustration in that key for
albicarpa has a closer resemblance but Rozkosny's figure shows two shorter extensions...
Rozkosny, R., 1991. A key to the Palaearctic species of
Pherbellia Robineau-Desvoidy, with descriptions of three new species (Diptera, Sciomyzidae). -
Acta Entomologica Bohemoslovaca 88: 391-406.