Themus (Telephorops) davidis (Fairmaire, 1889)

Yang, Yuxia, Zong, Le, Yang, Xingke & Liu, Haoyu, 2019, A taxonomic study on Themus (Telephorops) davidis species-group (Coleoptera, Cantharidae), with description of a new species from China, Zootaxa 4612 (3), pp. 401-411 : 410

Key to the species of Themus (Telephorops) davidis species-group

1. Elytra bicolour, mixed blue and yellow.................................................................... 2

- Elytra unicolour, uniformly green or blue.................................................................. 4

2. Aedeagus ( Wittmer, 1982: fig. 3) with laterophyse emarginate at lateroapical angle............. T. bitinctus Wittmer, 1982

- Aedeagus with laterophyse not emarginate at lateroapical angle................................................. 3

3. Female abdominal sternite VIII ( Wittmer, 1982: fig. 9) with lateral protuberances of posterior margin not reaching apex of middle one.................................................................... T. versicolor ( Gorham, 1889)

- Female abdominal sternite VIII ( Fig. 3A ) with lateral protuberances of posterior margin distinctly surpassing apex of middle one.......................................................................... T. birmanicus Wittmer, 1982

4. Female abdominal sternite VIII ( Fig. 3C ) with membranous lobe behind lateral emargination on each side of posterior margin.............................................................................. T. davidis ( Fairmaire, 1889)

- Female abdominal sternite VIII unlike above, without membranous lobe at posterior margin.......................... 5

5. Aedeagus with laterophyses not emarginate at lateroapical angles............................................... 6

- Aedeagus with laterophyses emarginate at lateroapical angles.................................................. 7

6. Female abdominal sternite VIII ( Fig. 3B ) with protuberances rounded at inner angles and widely triangular at outer angles.................................................................................... T. cavaleriei ( Pic, 1926)

- Female abdominal sternite VIII ( Fig. 3D ) with protuberances acute at inner angles and right at outer angles............................................................................................. T. larrygrayi Wittmer, 1982

7. Aedeagus ( Figs 5 A–D) with conjoint dorsal plate of parameres with narrow transverse protuberance at middle emargination; laterophyses slightly thickened in middle of apical part, with lateroapical angles slightly extended dorsally; female abdominal sternite VIII ( Wittmer, 1983a: fig. 49) with small triangular middle protuberance between the lateral protuberances of posterior margin......................................................................... T. uniformis Wittmer, 1983

- Aedeagus ( Figs 5 E–H) with conjoint dorsal plate of the parameres having a pair of small round lobes at the middle emargination; laterophyses strongly thickened in middle of apical part, with latero-apical angles strongly extended dorsally; female abdominal sternite VIII ( Fig. 3E ) triangularly emarginate between lateral protuberances of posterior margin....... T. hainanus sp. nov.

Figures

FIGURE 3. Abdominal sternite VIII of female, ventral view: A. Themus (Telephorops) birmanicus Wittmer, 1982; B. T. (Telephorops) cavaleriei (Pic, 1926); C. T. (Telephorops) davidis (Fairmaire, 1889); D. T. (Telephorops) larrygrayi Wittmer, 1982; E. T. (Telephorops) hainanus sp. nov. Scale bars: 1.0 mm.

FIGURE 5. Aedeagus (A, E. ventral view; B, F. dorsal view; C, G. lateral view; D, H. apical view): A–D. Themus (Telephorops) uniformis Wittmer, 1983; E–H. T. (Telephorops) hainanus sp. nov. Scale bars: 1.0 mm.