Three new Eastern-Mediterranean endemic species of the Merodon aureus group (Diptera: Syrphidae) Author Veselić, Sanja Author Vujić, Ante Author Radenković, Snežana text Zootaxa 2017 4254 4 401 434 journal article 33203 10.11646/zootaxa.4254.4.1 45ce91e2-3e09-4ff1-a1bf-f3ca8f1f592c 1175-5326 556010 5F2987AA-1E89-4178-8C97-57AE92268F49 Key to species complexes and species of the Merodon bessarabicus subgroup (Distribution data are included) MALES 1 Tergites only with pale pile..............................................................................2 - Tergites with pale pile and stripes of black pile..............................................................7 2 Mesonotum only with pale pile...........................................................................3 - Mesonotum with both pale and black pile, black ones present at least near wing basis............................... 5 3 Tergite II (and III) with a pair of orange lateral spots............... Merodon luteomaculatus complex (South-East Europe) - Tergites uniformly dark brown to black ( Fig. 9 a)............................................................ 4 4 Tergites II and III with a pair of lateral microtrichose stripes ( Fig. 9 a); hind femur black except for paler apical margin ( Fig. 9 b); pile on eyes black in upper 1/2....................................... Merodon legionensis (Iberian Peninsula) - Tergites usually without microtrichia ( Fig. 7 a); hind femur with yellowish apical fifth, including triangular process ( Fig. 7 c); pile on eyes black in upper 1/3.................................................... Merodon flavicornis ( France ) 5 Black pile on mesoscutum distributed only between wing bases ( Fig. 15 a).............................................................................. Merodon ambiguus complex ( Aegean islands, Balkan and Anatolian Peninsulas) - Pile on at least posterior half of mesoscutum black (as in Fig. 5 a)................................................ 6 6 Eyes in upper third with black pile; hind femora in apical half with black pile; almost all surface of mesoscutum covered with black pile, except pale stripes of pile on anterior margin; anterior half of scutellum with black pile, posterior half with pale pile ( Fig. 4 b)........................................................... Merodon adriaticus sp. n. (Adriatic coast) - Eyes and hind femora mostly covered with pale pile; mesoscutum with black pile on posterior half; scutellum covered with pale pile ( Fig. 12 b)......................................................... Merodon rufipes (Eastern Europe) 7 Mesoscutum covered with pale pile............... Merodon sapphous complex ( Aegean islands and Anatolian Peninsula) - Mesoscutum with at least wing bases bearing black pile..................................................... .. 8 8 Eyes in upper half covered with black pile............. Merodon bessarabicus complex (Anatolian and Balkan Peninsulas) - Pile of eyes pale or with few black pile in apical fifth........................ Merodon quercetorum (Iberian Peninsula)