Themus (Haplothemus) coriaceipennis ( Fairmaire, 1889 )

Su, Junyan, Yang, Yuxia & Yang, Xingke, 2015, Description of three new species related to Themus (Haplothemus) coriaceipennis (Fairmaire, 1889) (Coleoptera: Cantharidae), Zootaxa 4034 (2), pp. 375-389 : 376

Key to the species related to Themus (Haplothemus) coriaceipennis ( Fairmaire, 1889)

1. Pronotum uniformly or mostly red or yellow................................................................ 2

- Pronotum uniformly black brown or mostly black............................................................ 3

2. Pronotum yellow, with two small black markings on disc; aedeagus: conjoint dorsal plate of parameres slightly shorter than ventral processes............................................................. T. (H.) bimaculaticollis sp. nov.

- Pronotum uniformly red, sometimes with two or four indistinct black markings on disc; aedeagus: conjoint dorsal plate of parameres distinctly shorter than ventral processes................................... T. (H.) ruficollis Wittmer, 1995

3. Pronotum uniformly black brown.............................................. T. (H.) nigropolitus Wittmer, 1995

- Pronotum mostly black or with one or two large black markings................................................. 4

4. Aedeagus: ventral process of each paramere narrow and nearly straight, conjoint dorsal plate convex at apical parts of inner surface.............................................................................................. 5

- Aedeagus: ventral process of each paramere slightly widened, with outer margins arcuate in ventral view, conjoint dorsal plate normal on inner surface.................................................................................6

5. Pronotum wider (about 1.2 times as wide as long); aedeagus: conjoint dorsal plate of parameres slightly shorter than ventral processes............................................................. T. (H.) coriaceipennis ( Fairmaire, 1889)

- Pronotum narrower (about 1.1 times as wide as long); aedeagus: conjoint dorsal plate of parameres moderately shorter than ventral processes..................................................................... T. (H.) rectus sp. nov.

6. Female genitalia: diverticulum boot-shaped; aedeagus: conjoint dorsal plate of parameres evenly narrowed apically.......................................................................................... .. T. (H.) licenti Pic, 1938

- Female genitalia: diverticulum sac-shaped; aedeagus: conjoint dorsal plate of parameres abruptly narrowed apically... T. (H.) licentimimus sp. nov.