Rhipidia

Zhang, Xiao & Yang, Yan Li Ding, 2012, Species of the genus Rhipidia Meigen from Taiwan (Diptera, Limoniidae), Zootaxa 3247, pp. 32-42 : 33

Key to species (males) of genus Rhipidia from Taiwan

1 Sc2 atrophied; cell dm open by atrophy of m-m ( Fig. 3 ); clasper of gonostylus with two slender rostral spines arising from a common enlarged basal tubercle of rostral prolongation ( Figs. 4–7 ).............. R. (E.) formosana formosana Alexander

- Sc2 preserved; cell dm closed; clasper of gonostylus with more than two rostral spines directly arising from rostral prolongation................................................................................................. 2

2 Antenna with six bipectinate segments ( Fig. 9 ); clasper of gonostylus with four rostral spines ( Figs. 11 , 13–15 )........................................................................................... R. (R.) servilis (Alexander)

- Antenna with eight bipectinate segments; clasper of gonostylus not as above...................................... 3

3 Prescutum without conspicuous stripe; clasper of gonostylus with five rostral spines ( Figs. 24–27 ).................................................................................................. R. (R.) chenwenyoungi sp. nov.

- Prescutum with a median brown stripe, lateral stripes lacking or nearly so; clasper of gonostylus with three rostral spines ( Alexander 1930).............................................................. R. (R.) triarmata (Alexander)

Figures

FIGURES 1 – 4. Rhipidia (Eurhipidia) formosana formosana Alexander, 1923. 1: Habitus of male, lateral view; 2: Head of male; 3: Wing; 4: Hypopygium, dorsal view. Scale bar: 1 – 3 = 0.5 mm; 4 = 0.1 mm.

FIGURES 5 – 7. Rhipidia (Eurhipidia) formosana formosana Alexander, 1923. 5: Hypopygium, lateral view; 6: Hypopygium, dorsal view; 7: Hypopygium, ventral view. Scale bar: 5 – 7 = 0.1 mm.

FIGURES 8 – 12. Rhipidia (Rhipidia) servilis (Alexander, 1932). 8: Habitus of male, lateral view; 9: Head of male; 10: Wing; 11: Hypopygium, dorsal view; 12: Paramere, lateral view. Scale bar: 8 = 1.0 mm; 9 – 10 = 0.5 mm; 11 – 12 = 0.1 mm.

FIGURES 13 – 15. Rhipidia (Rhipidia) servilis (Alexander, 1932). 13: Hypopygium, lateral view; 14: Hypopygium, dorsal view; 15: Hypopygium, ventral view. Scale bar: 13 – 15 = 0.1 mm.

FIGURES 21 – 24. Rhipidia (Rhipidia) chenwenyoungi sp. nov. 21: Habitus of male, lateral view; 22 Head of male; 23: Wing; 24: Hypopygium, dorsal view. Scale bar: 21 = 0.5 mm; 22 = 0.25 mm; 23 = 0.5 mm; 24 = 0.1 mm.

FIGURES 25 – 27. Rhipidia (Rhipidia) chenwenyoungi sp. nov. 25: Hypopygium, lateral view; 26: Hypopygium, dorsal view; 27: Hypopygium, ventral view. Scale bar: 25 – 27 = 0.1 mm.