Helina calathocerca, Xue & Wang, 1986

Li, Siyu, Xue, Wanqi, Nihei, Silvio S. & Zhang, Chuntian, 2025, Four new species of Helina Robineau-Desvoidy from far northwestern China (Diptera: Muscidae), Zootaxa 5719 (2), pp. 207-227 : 214

Key to Chinese species of Helina calathocerca -group (males)

(modified from Xue et al., 2012)

1 dc 2+4 .............................................................................................. 2

- dc 2+3 .............................................................................................. 3

2 Eye bare; pra hair-like and short; sternite 1 bare..................................... H. franzosternita Xue sp. nov.

- Eye with sparse short cilia; pra about 2/3 as long as posterior notopleural seta; sternite 1 with a pair of small setulae.............................................................................................. H. subsetiventris

3 Ventral surface of scutellum widely covered with fine hair; pra about 2/3 of the length of posterior notopleural seta............................................................................................. H. sterniteoacaena

- Lateral and ventral surfaces of scutellum bare; pra hair-like, at most 1/3 of the length of posterior notopleural seta........ 4

4 Posterior notopleural seta with hairs.......................................................... H. appendifolia

- Notopleuron bare..................................................................................... 5

5 Genal height about 1/5 of eye height; hind tibia with 2 ad; sternites 2–4 and the sternite 5 lateral lobes are not densely long setae; male surstylus hammer-like............................................................ H. calathocerca

- Genal height about 1/3 of eye height; hind tibia with 3 ad; sternites 2–4 and the sternite 5 lateral lobes with densely long setae; male surstylus boot-like....................................................................... H. densiseta