Bombyliini, Latreille, 1802

Li, Xuankun & Yeates, David K, 2019, A new genus and species of an unusual Australian winter bee fly (Diptera: Bombyliidae) with discussion on its phylogenetic position, Austral Entomology 58, pp. 92-203 : 93-94

Key to Australian genera of Bombyliini

1 M 1 ending at wing margin, cell r 5 open ............................. 2

– M 1 ending at r 5, cell r 5 closed............................................. 9

2 Palpus two-segmented......................................................... 3

– Palpus one-segmented ......................................................... 4

3 Flagellum apex truncate, with dorsal apical stylus; anterior half of scutum strongly arched; abdominal hairs uniformly yellowish, without longitudinal pale scales in middle part, hairs relatively long laterally.................................. Eusurbus

– Flagellum apex tapering, with apical stylus; anterior half of scutum slightly arched; abdominal hairs with a remarkable black and white pattern, longitudinal pale scales present in middle part, hairs long and brush-like laterally ................................................................. Zentamyia

4 Cell br much longer than cell bm, crossvein r-m located on apical half of cell dm ........................................................... 5

– Cell br nearly as long as cell bm, crossvein r-m located on basal half of cell dm ............................................................ 7

5 Pedicel nearly as long as width, and scape ~3.0× longer than pedicel; horizontal line dividing compound eye................................................................ Cryomyia (part)

– Pedicel ~2.0× longer than wide, and scape less than 2.0× longer than pedicel; without horizontal line dividing compound eye............................................................................. 6

6 Pedicel 2.5× longer than wide; wing brown towards costal third; female sperm pump shorter than 1.0× length of genital fork; distal spermathecal duct longer than 2.0× of genital length; sperm bulb with apical small conical point; basal bulb absent ( Li & Yeates 2018a: fig. 50g).............................................................. Robertsmyia

– Pedicel 1.8× longer than wide; wing uniformly slightly infuscated, without distinct darker area towards costal third; female sperm pump longer than 2.5× length of genital fork, strong and sinuous; distal spermathecal duct shorter than 1.0× length of genital fork; sperm bulb flattened, apex spherical; basal bulb present ( Li & Yeates 2018a: fig. 26g).................................................................... Laurella

7 Male eyes narrowly separated by 0.5× width of ocellus; femora thickened; pulvillus and claw enlarged, longer than distitarsus; male genitalia enlarged; female genital fork enlarged.......................................... Paramonovius gen. nov.

– Male eyes clearly holoptic, not separated; femora not thickened; pulvillus and claw not enlarged, shorter than distitarsus; male genitalia not enlarged; female genital fork not enlarged ......................................................................... 8

8 Flagellum with subapical long hairs ( Li & Yeates 2018a: fig. 6x); labellum broad and fleshy; abdomen with median longitudinal stripe, consisting of dense, decumbent, short scales; abdominal apex without long, brush-like hairs...................................................................... Sisyromyia

– Flagellum with subapical setae and setula ( Li & Yeates 2018a: fig. 21c) or bare ( Li & Yeates 2018a: fig. 18c); labellum thin and filiform; abdomen with median longitudinal stripe, consisting of long scales; abdominal apex with long, brush-like hairs ................................................... Dissodesma

9 Crossvein m-m much shorter than crossvein r-m, sometimes absent; M 1 + 2 present ( Li & Yeates 2018a: fig. 7m)....... 10

– Crossvein m-m nearly as long as crossvein r-m; M 1 + 2 never present ( Li & Yeates 2018a: fig. 7o) ................................ 12

10 Compound eye with horizontal line............ Cryomyia (part)

– Compound eye without horizontal line............................. 11

11 Second flagellomere long; base of wing vein Cu bare; thoracic scutum without pale hairs on lateral margin; abdominal tergites largely yellow with black medially; female without sand chamber ...................................................... Eristalopsis

– Second flagellomere short; base of wing vein Cu often with long hairs; thoracic scutum often with pale hairs on lateral margin; abdominal tergites blackish; female with sand chamber............................................................ Staurostichus

12 Cell br much longer than cell bm, crossvein r-m located on middle part of cell dm .......................................... Nigromyia

– Cell br nearly as long as cell bm, crossvein r-m located on basal part of cell dm .......................................................... 13

13 Base of wing vein Cu with long hairs .............................. 14

– Base of wing vein Cu bare................................................ 15

14 Flagellum two-segmented; female eye separation less than 2.5× of ocellar tubercle width, frons normal, less than 3.5× width of frons ......................................................... Mandella

– Flagellum one-segmented; female eye separation more than 3.5× of ocellar tubercle width, frons wide, over 3.5× width of frons................................................................... Choristus

15 Flagellum elongate and slender; palpus short, without palpal pit; abdomen with brush-like long hairs ................ Meomyia

– Flagellum not elongate; palpus long, with lateral palpal pit; abdomen without brush-like long hairs ........ Lambkinomyia