Diplonevra, Lioy, 1864

Liu, Guang-Chun & Disney, R. Henry L., 2024, Revisionary notes on the genus Diplonevra Lioy (Diptera: Phoridae) and a new key to species from China, Zootaxa 5446 (3), pp. 433-440 : 439

Key to Chinese species (males only)

1. Hind tibia with 3 longitudinal setal palisades; wing vein M straight..................................................... 2 1

Hind tibia with 2 longitudinal setal palisades; wing vein M 1 curved...................................................... 4

2. Hind tibia with 1 anterodorsal seta before apical quarter............................................ D. bifasciata (Walker)

Hind tibia with 2 or 3 anterodorsal setae............................................................................ 3

3. Hind tibia with 2 anterodorsal setae; dorsal and posterodorsal setal palisades on hind tibia converge at mid-length of tibia; abdominal venter whitish yellow.............................................................................. D. bisetifera Liu

Hind tibia with 3 anterodorsal setae before apical quarter; dorsal and posterodorsal setal palisades of hind tibia not converged; abdominal venter dark brown.......................................................................... D. abbreviata (v. Roser)

4. Hind tibia with isolated setae before apical quarter.................................................................... 5

Hind tibia without isolated setae before apical quarter................................................................ 15

5. Hind tibia with anterodorsal setae before apical quarter................................................................ 6

Hind tibia without anterodorsal setae, but with anteroventral setae before apical quarter..................................... 9

6. Hind tibia with 2–4 anteroventral setae and 3–4 anterodorsal setae; abdominal tergites alternated with yellow and black color.............................................................................................. D. peregrina (Wiedemann)

Hind tibia without anteroventral setae; abdominal tergites uniformly dark brown........................................... 7

7. Hind tibia with 1 anterodorsal setae; basal ascending process of posterior face of hind femur short, trapezoid, with 2 fine and long setulae.................................................................................... D. trapezia Liu et Yang

Hind tibia with 2 anterodorsal setae; without ascending process on posterior face of hind femur............................... 8

8. Base of posterior face of hind femur extending to the base and forming a horn-like process, bearing 4 setae apically....................................................................................................... D. corniculata Liu et Yang

Base of posterior face of hind femur not extending to the base and without a horn-like process; with 4 short setae in a row...................................................................................................... D. florescens (Turton)

9. Proboscis elongated, narrow, and elbowed; hind trochanter with a cluster of very short blunt setae............ D. funebris (Meigen)

Proboscis short and frequently bulbous basally; hind trochanter with normally tapered setae................................. 10

10. With an ascending process on base of posterior face of hind femur, which bearing setae at the tip............................. 11

Without an ascending process on base of posterior face of hind femur, but with 1–2 setae at the same place.................... 12

11. Ascending process of posterior face of hind femur long, belt-like, with 2 stout setae at the tip; posterior face of trochanter with 6 setae plus several fine setulae.................................................................... D. vecticrassa Liu et Yang

Ascending process of base of posterior face of hind femur composed of 2 lamellar structures, each bearing a strong bolt-like seta apically; posterior face of trochanter with 4 curved setae......................................... D. hirsuta Michailovskaya

12. Tarsomere 5 of fore leg clearly darker than other tarsomeres........................................................... 13

Tarsomere 5 of fore leg not darker than other tarsomeres............................................................. 14

13. Tarsomere 5 of both fore and mid legs darker; upper setae of posterior face of hind femur arranged transversely.............................................................................................................. D. nigritarsis Lee et al

Only tarsomere 5 of fore leg darker; upper setae of posterior face of hind femur arranged longitudinally...... D. nudisetalis sp. nov.

14. Frons covered with dense (100–120) setulae; upper setae of posterior face of hind femur very weak.......... D.incisura Lee et al.

Frons covered with sparse (50–70) setulae; upper setae of posterior face of hind femur very strong........... D. pilisparsa sp. nov.

15. Ascending process of posterior face of hind femur triangular; hind trochanter without bifurcated setae........................ 16

Ascending process of posterior face of hind femur rectangular, belt-like; hind trochanter with bifurcated setae.................. 17

16. Base of posterior face of hind femur with 12–15 setae, which thinner than those on trochanter.......... D. spinibotra Liu et Yang

Base of posterior face of hind femur with 4–8 setae, which as thick as those on trochanter............. D. triangulata Liu et Yang

17. Tarsomere 5 of fore leg swollen; ascending process short, with a long seta and a short, fine setulae...... D. furcavectis Liu et Yang

Tarsomere 5 of fore leg not swollen; ascending process short or long, with 2–3 equal-length setae......................... 18

18. Ascending process longer than broad with two long and fine setulae............................ D. taigaensis Michailovskaya

Ascending process shorter than broad with three thick setulae....................................... D. brevicula Liu et Yang