Brachyopa quadrimaculosa

Key to the members of the Brachyopa quadrimaculosa species group in the Eastern Mediterranean

(following Doczkal & Dziock 2004)

1. Scutellum entirely covered in microtrichia................................. Brachyopa bimaculosa Doczkal & Dziock

- Scutellum largely bare of microtrichia, at least on posterior 1/2–1/3.............................................. 2

2. Proepimeron with a few pile anteriorly. Scutum with rounded bare spots at the transverse suture (Figs 3 C & D)........... 3

- Proepimeron bare. Scutum with microtrichose transverse suture................................................. 5

3. Lateral sides of scutum uniformly covered with light grey microtrichia....... Brachyopa vernalis van Steenis & van Steenis

- Lateral sides of scutum with stripes of dark grey microtrichia... (as in Fig. 3 C)..................................... 4

4. Postalar callus with a very small bare spot (Fig. 3 C); male terminalia illustrated in Kaplan & Thompson (1981: 209, Figs 16– 18)............................................... Brachyopa quadrimaculosa Thompson in Kaplan & Thompson

- Postalar callus with large bare spot (see van Steenis & van Steenis 2004: Fig. 4).................................................................................................. Brachyopa cruriscutum van Steenis & van Steenis

5. Sensory pit present; scutum with bare spots and stripes (Figs 3 A & B); tergites with pale pile; male terminalia in Figs 4–5.................................................................................. Brachyopa minima sp. nov.

- Sensory pit absent; scutum completely microtrichose except for the postalar callus; second tergite with black pile posteromedi- ally in female (can be absent in male); (male terminalia illustrated in Vujić (1991: 147, Fig. 4 B)....................................................................................................... Brachyopa insensilis Collin