Craspedomerus

Li, Liang & Zhou, Hong-Zhang, 2010, Taxonomy of the genus Craspedomerus Bernhauer, 1911 (Coleoptera: Staphylinidae: Philonthina) from China, Zootaxa 2506, pp. 1-25 : 3

Key to the Chinese species of Craspedomerus

1. Elytra varied metallic blue, violaceous, purple or dark purple..................................................................................... 2

- Elytra fusco-testaceous ................................................................................................................................................. 7

2. Elytra purple with shoulders, posterior margins and suture markedly yellow .................... C. zhangi Li & Zhou sp. n.

- Elytra entirely metallic blue, violaceous, purple or dark purple................................................................................... 3

3. Abdomen entirely black; eyes very large, 1.30–1.60 times as long as tempora ......................... C. sinetuber (Coiffait)

- Abdomen at least partly reddish-yellow; eyes small, 0.67–0.92 times as long as tempora.......................................... 4

4. Antennae entirely black brown ..................................................................................................................................... 5

- Antennae black with 8th–10th segments yellow ............................................................................................................. 6

5. Body very large (HPL: 5.47–5.71); pronotum with profound microsculpture of mesh ................................................. ........................................................................................................................................ C. giganteus Li & Zhou sp. n.

- Body small (HPL: 4.08–4.32); pronotum with profound microsculpture of long waves............................................... .................................................................................................................................... C. gongshanus Li & Zhou sp. n.

6. Pronotum with strongly violaceous reflex; femora dark ..................................................... C. cyanipennis Scheerpeltz

- Pronotum with bronze-green reflex; femora reddish........................................................... C. violaceipennis Cameron

7. Antennae black with 8th–11th segments to various extent yellow................................................. C. beckeri Bernhauer

- Antennae black with 7th–11th segments yellow ............................................................................................................. 8

8. Elytra with a dark transverse fascia across the middle; tergite VII entirely reddish-yellow .... C. glenoides (Schubert)

- Elytra without a dark transverse fascia across the middle; tergite VII with basal third portion black ........................... ................................................................................................................................................... C. ganeshensis Coiffait