Key to males of the Pollenia haeretica species-group

1 Cerci broad in dorsal view (Fig. 4); apex appearing truncated (Fig. 4), slightly upturned in lateral view (Fig. 5) and covered with a very conspicuous and very dense brush of brownish setulae (Fig. 6). In lateral view the long erect setae present on the dorsal surface of the cerci proceed distally all the way to the tip (Fig. 5). Pregonite a broad-based triangle in lateral view (Fig. 3). Frons at narrowest / head width ratio 0.121–0.158..........1. Pollenia haeretica Séguy

- Cerci narrow in dorsal view (Fig. 19); apex long, pointed (Fig. 19), not upturned in lateral view (Fig. 20) and covered with an inconspicuous, sparse brush of yellowish setulae (Figs. 21, 28). In lateral view the long erect setae present on the dorsal surface of the cerci are absent on the distal half (Fig. 20). Pregonite narrower, distally with almost parallel edges (Fig. 18). Frons at narrowest / head width ratio 0.100–0.108........................... 2. Pollenia ibalia Séguy