Chelifera

Wang, Xiwei, Yan, Shanchun & Yang, Ding, 2014, Two new species of Chelifera Macquart from China (Diptera: Empididae), Zootaxa 3795 (2), pp. 187-192 : 187-188

Key to species (primarily males) of Chelifera from China

(modified from Yang et al. 2005)

1 Thoracic dorsum entirely or mostly black, or brownish yellow with 2 black longitudinal stripes on mesonotum; pterostigma present except C. sheni ................................................................................ 2

- Thorax uniformly yellowish to dark brownish; pterostigma absent.............................................. 6

2 Mesonotum entirely or mostly black; pterostigma present; male cercus not as below................................. 3

- Mesonotum brownish yellow with 2 black longitudinal stripes; pterostigma absent; male cercus much narrower than epan- drium in lateral view ( Yang & Yang 2004, fig. 80)....................................... C. sheni Saigusa & Yang

3 Pterostigma short and wide; thorax black, or thorax yellow except dorsum mainly black............................. 4

- Pterostigma long and narrow; thorax black except pleura brownish yellow [male unknown]...... C. lateralis Yang & Yang

4 Thorax black except postalar calli dark yellow; male cercus not furcated, or apically furcated with short acute ventral process................................................................................................... 5

- Thorax mainly yellow except dorsum mainly black; male cercus apically furcated with short acute dorsal process ( Fig. 1 )........................................................................................... C. liuae sp. nov.

5 Fore tarsomere 5 and mid and hind tarsomeres 4–5 blackish to black; male cercus not furcate apically ( Yang & Yang 2004, fig. 83)............................................................................. C. sinensis Yang & Yang

- All tarsi from tip of tarsomere 3 brown to dark brown onward; male cercus furcate apically with short acute ventral process ( Yang & Yang 2004, fig. 77)........................................................ C. incisa Saigusa & Yang

6. Only foreleg raptorial; male cercus not as below............................................................ 7

- Male fore and mid legs raptorial and modified; male cercus nearly straight, with many inner denticles along middle portion ( Horvat 2002, figs 8–9)............................................................... C. ornamenta Horvat

7 Thorax brownish yellow or dark brownish; male cercus not furcated apically ( Fig. 4 )............................... 8

- Thorax yellowish; male cercus furcate apically ( Horvat 2002, fig. 1)........................... C. emeishanica Horvat

8 Thorax brownish yellow; male cercus narrowed apically (in dorsal view) and with 4–5 inner denticles on median lobe; epan- drium shorter than cercus, apically not long finger-like (in lateral view) ( Yang et al. 2005, fig. 1).......................................................................................... C. nanlingensis Yang, Grootaert & Horvat

- Thorax dark brownish; male cercus wide apically (in dorsal view) and with only 2 inner denticles on subapical lobe ( Fig. 5 ); epandrium distinctly longer than cercus, apically long finger-like (in dorsal view) ( Fig. 4 )............ C. tibetensis sp. nov.

Figures

FIGURES 1 – 3. Chelifera liuae sp. nov. (male). 1. Genitalia, lateral view; 2. cerci, dorsal view; 3. hypandrium and phallus, lateral view. Abbreviations: cer = cercus; eja = ejaculatory apodeme; epn = epandrium; hyp = hypandrium; hypp = hypandrial process; ph = phallus; pog = postgonite. Scale bar = 0.2 mm.

FIGURES 4 – 6. Chelifera tibetensis sp. nov. (male). 4. Genitalia, lateral view; 5. cerci, dorsal view; 6. hypandrium and phallus, lateral view. Scale bar = 0.2 mm.