Sisyromyia White, 1916

Li, Xuankun & Yeates, David K., 2019, Revision of the Australian bee fly genus Sisyromyia White, 1916 (Bombyliidae, Bombyliinae, Acrophthalmydini), Zootaxa 4711 (2), pp. 201-244 : 203

Key to species of Sisyromyia White

1. Wing membrane dark brown on anterior half, hyaline on posterior half, with distinct margin.......................... 2

- Wing membrane hyaline to dark brown without distinct margin................................................. 3

2. Male eyes dichoptic; gap between inner apices of gonocoxites wide; inner apex of gonocoxite long............................................................................................ Sisyromyia decorata ( Walker, 1849)

- Male eyes holoptic; gap between inner apices of gonocoxites narrow; inner apex of gonocoxite short................................................................................ Sisyromyia thomsoni Evenhuis & Greathead, 1999

3. Anterior margin of scutellum with a band consisting of short white scales......................................... 4

- Anterior margin of scutellum without a band................................................................ 7

4. Wing membrane dark brown, slightly lighter towards posterior margin....................... Sisyromyia umbra sp. nov.

- Wing membrane at most slightly infuscated or with markings, never dark brown................................... 5

5. Wing membrane without markings; abdominal tergites with short white scales laterally..... Sisyromyia albisquama sp. nov.

- Wing membrane with light markings; abdominal tergites without short white scales laterally......................... 6

6. Male eyes connected; frons 2.8 x length of ocellar tubercle; gap between inner apices of gonocoxites wide; lateral margin of gonocoxite nearly straight.................................................... Sisyromyia limbata ( Bigot, 1892)

- Male eyes narrowly separated by 0.2 x width of ocellus; frons 1.8 x length of ocellar tubercle; gap between inner apex of gonocoxite narrow; lateral margin of gonocoxite strongly curved..................... Sisyromyia maculipennis sp. nov.

7. Scutum with one dorsocentral stripe consisting of dense, decumbent short golden scales; abdominal tergites 2–6 with lateral stripe consisting of sparse, decumbent golden scales...................................... Sisyromyia vittata sp. nov.

- Scutum and abdominal tergites without stripes of scales as above............................................... 8

8. Body mostly covered in golden scales and hairs................................... Sisyromyia aurata ( Walker, 1849)

- Body mostly covered in reddish or brownish scales and hairs................................................... 9

9. Body mostly covered in brown hairs; wing membrane infuscated on anterior margin and darker towards wing base; abdominal tergites black except posterolaterally brown.......................................... Sisyromyia elongata sp. nov.

- Body mostly covered in reddish hairs; wing membrane uniformly infuscated; abdominal tergites black................ 10

10. Flagellum 1.7 x as long as scape + pedicel, 2.7 x as long as scape; abdominal median stripe wide; inner apex of gonocoxite wide...................................................................... Sisyromyia rutila ( Walker, 1849)

- Flagellum 2.3 x as long as scape + pedicel, 3.1 x as long as scape; abdominal median stripe thin; inner apex of gonocoxite narrow..................................................................... Sisyromyia angustivitta sp. nov.