Key to the groups of the subtribe Eristalina

1. Anepimeron with triangular portion bare (Figs. 1, 3­4)................................................ 6

­ Anepimeron with triangular portion pilose (Fig. 2) ...................................................... 2

2. Postalar pile tuft absent; eye bare, without maculation; wing brown, completely microtrichose; scutellum with marginal sulcus .............................................. Solenaspis

­ Postalar pile tuft present (Fig. 5); eye with maculae; wing hyaline; scutellum without marginal sulcus.............................................................................................................. 3

3. Wing densely and uniformly microtrichose on apical half ..... Eristalinus (Helophilina)

­ Wing bare or sparsely microtrichose............................................................................. 4

4. Metafemur thickened, distinctly arcuate; metatibia strongly compressed and carinate on basoventral 1/3; eye bare or very finely pilose dorsally, with pili no longer than

ommatidial diameter; male metatrochanter with ventral patch of short stiff black setulae ............................................................................................. Eristalinus (Merodonoides) ­ Metafemur at most very slightly thickened, not arcuate; metatibia not carinate nor compressed ventrally; eye usually densely pilose, with pili much longer than omma­ tidial diameter; male metatrochanter simple ................................................................. 5

5. Eye punctate (with spots) ......................................................... Eristalinus (Eristalinus)

­ Eye fasciate and punctate (with bands and bands) ................... Eristalinus (Eristalodes)

6. Katepimeron bare (Fig. 3) ........................................................................................... 13

­ Katepimeron pilose (Fig. 4) .......................................................................................... 7

7. Meron bare posteroventrally, without pile anterior or ventral to metathoracic spiracle (Fig. 4); eye pilose; arista pilose ........................................................................ Eristalis

­ Meron pilose posteroventrally, with pile anterior or ventral to spiracle ....................... 8

8. Eye pilose, at least some pile dorsally, frequently densely pilose; arista bare............ 12

­ Eye usually bare, if with a few distinct pili, then arista pilose...................................... 9

9. Scutellum without apical sulcus; metatibia at most very slightly compressed apically, with apical half not broader than basal half, without dorsal or ventral pile fringes........ ............................................................................................................ Austalis gen. nov.

­ Scutellum with apical sulcus along margin; metatibia strongly compressed on apical half, distinctly broader than basal half, and often with dense dorsal and ventral fringes of dark hairs................................................................................................................. 10

10. Arista bare; wing microtrichose on apical half; precallar depression bare or with at most a few pili mesially; male holoptic ............................................................ Senaspis

­ Arista pilose, with short to moderately long pili; wing at least bare apicoposteriorly; precallar depression with many stiff pili posteriorly................................................... 11

11. Front with strongly rugose area dorsal to antenna; male holoptic ................... Phytomia

­ Front not rugose; male dichoptic ....................................................................... Simoides

12. Face drawn out into a long slender porrect snout.................................. Lycastrirhyncha

­ Face not drawn out into a snout ......................................................................... Palpada

13. Postalar pile tuft present (Fig. 5); eye bare .............................................. Kertesziomyia

­ Postalar pile tuft absent ............................................................................................... 14

14. Eye pilose .................................................................................................................... 20

­ Eye bare....................................................................................................................... 15

15. Wing with a stigmatic crossvein between Sc and R1 apically .................................... 19

­ Wing without stigmatic crossvein ............................................................................... 16

16. Face concave, straight or produced anteroventrally, without a tubercle ..................... 18

­ Face with distinct tubercle........................................................................................... 17

17. Wing hyaline; basoflagellomere large, much longer than metathoracic spiracle; katepisternum discontinuously pilose, with a few ventral pili, broadly bare medially, pilose on dorsal 1/4; plumula greatly reduced, not branched.............................. Digulia

­ Wing brown on anterior half; basoflagellomere small, only about as long as metathoracic spiracle; katepisternum continuously and densely pilose; plumula well developed, multibranched .............................................................................................. Axona

18. Mesonotum unicolorous; vein R4+5 only slightly sinuate; crossvein r­m basal, before middle of discal cell; wing partially bare; male dichoptic; body usually with short thick scale­like pile in addition to long normal pile ....................................... Dissoptera

­ Mesonotum vittate; R4+5 strongly sinuate; crossvein r­m apical, beyond middle of discal cell; wing entirely microtrichose; male holoptic; body without specialized pile ................................................................................................................................. Keda

19. Mesonotum and frequently abdomen with patches of dense subappressed tomentose yellow pile; male metafemur usually not enlarged, never with basolateral tubercle ..... .................................................................................................................... Meromacrus

­ Without tomentose pile; male metafemur enlarged, with basolateral tubercle ............... .................................................................................................... " Senaspis " apophysata

20. Metatibia not compressed nor carinate; wing bare apically ........ Eristalis (Eoseristalis)

­ Metatibia compressed and carinate on basoventral 1/3; wing microtrichose on apical 1/3 or more .................................................................................................................. 21

21. Metafemur greatly swollen; wing dark brown on anteroapical 1/3; cell R2+3 bulbous apically; male dichoptic ......................................................................... Meromacroides

­ Metafemurnotgreatlyswollen;winghyaline;cellR2+3notbulbousapically;maleholoptic " Eristalis " dasyops group