Planempis

Liu, Xiaoyan, Saigusa, Toyohei & Yang, Ding, 2012, Two new species of Empis (Planempis) from Oriental China, with an updated key to species of China (Diptera: Empidoidea), Zootaxa 3239, pp. 51-57 : 51-52

Key to species (males) of the subgenus Planempis from China

(modified from Wang et al. 2010)

1 Frons linear or eyes contiguous, without marginal setulae; body black.......................................... 2

- Frons wide, at least as wide as median ocellus, with marginal setulae; body largely yellow.... E. freyi Yang, Zhang et Zhang

2 Acr at least biseriate or absent; scutellum with four sc except E. mandarina with six sc.............................. 3

- Acr uniseriate; scutellum with six sc.......................................................... E. zhuae sp. nov.

3 Acr biseriate; scutellum with four sc...................................................................... 4

- Acr absent; scutellum with six sc........................................................... E. mandarina Frey

4 Legs partly or mostly reddish yellow; male cerci broad and flattened or weakly swollen dorsally...................... 5

- Legs entirely blackish brown; male cerci narrow, not flattened dorsally............................ E. hyalogyne Bezzi

5 M1 and M2 incomplete, not reaching wing margin.......................................................... 6

- M1 and M2 complete, reaching wing margin ( Fig. 7 ).......................................................... 7

6 Femora and tibiae mostly reddish yellow; abdomen partly yellow at base; cercus with dorsal arm long, finger-like..................................................................................... E. prolongata Wang, Li et Yang

- Femora and tibiae nearly entirely blackish brown; abdomen entirely black; cercus with dorsal arm short and thick, subtriangu- lar........................................................................................................................................................................... E. shennongana Wang, Li et Yang

7. Hind tibia swollen apically, thicker than its femur; male cerci strongly produced posteriorly beyond epandrial lobe, weakly swollen dorsally............................................................................ E. ingrata Frey

- Hind tibia not swollen apically, as thick as its femur; male cerci short, slightly extending posteriorly beyond epandrial lobe, widely flattened dorsally ( Fig. 1 )...................................................... E. tianmushana sp. nov.

Figures

FIGURES 7 – 8. Wing (male). 7. Empis (Planempis) tianmushana sp. nov. 8. Empis (Planempis) zhuae sp. nov. Scale bar 1 mm.

FIGURES 1 – 3. Empis (Planempis) tianmushana sp. nov. (male). 1. Genitalia, lateral view. 2. Cerci, dorsal view. 3. Phallic complex, lateral view. Scale bar 0.25 mm.