Ascaphium

He, Wen-Jia, Tang, Liang & Li, Li-Zhen, 2008, New data on the genus Ascaphium Lewis (Coleoptera, staphylinidae, Scaphidiinae) of China, Zootaxa 1923, pp. 62-68 : 63

Key to Ascaphium species of China

1 Each elytron with six discal puncture rows of similar or different length....................................................2

- Each elytron with four or five discal puncture rows of similar or different length ..................................... 6

2 All six discal rows of similar length, very long and reaching posterior tenth of elytron.............................3

- Four inner discal rows are longer than two outer rows; all discal rows ending far before posterior tenth of elytron...........................................................................................................................................................5

3 Body large, BL about 9.0 mm. Abdomen entirely bright ochreous. Second and third discal rows of elytra joined apically. Adult habitus as in Fig. 2 . PW 2.7 mm. China (Yunnan)...................... A. ingentis sp. nov.

- Body of medium size, BL no more than 7.0 mm. Abdomen dark brown. Second and third discal rows of elytra not joined apically..............................................................................................................................4

4 First and third discal rows joined near apex of elytra, beyond second row. BL 6.0 mm. China ( Taiwan); Vietnam...................................................................................................................... A. tonkinense Achard

- First and third discal rows of elytra never joined apically. BL 5.9–7.0 mm. PW 2.9 mm. China (Fujian, Jiangxi) ................................................................................................................................... A. sinense Pic

5 Elytra slightly impressed apically; 1st and 2nd discal rows separated from basal row, 3rd and 4th rows joined with basal row, 5th row relatively long, with 10–12 punctures. Adult habitus as in Fig. 1 . Aedeagus ( Figs. 4–6 ). BL 5.8–6.5 mm. PW 2.2 mm. China (Yunnan)............................................. A. longlingense sp. nov.

- Elytra impressed laterally and apically; 1st and 2nd discal rows joined with basal row, 3rd and 4th rows joined with or separated from basal row, 5th row relatively short, with no more than 6 punctures. Adeagus as in Figs. 8–10 in Löbl 1999. BL 5.0– 5.5 mm. PW 2.0– 2.2 mm. China (Yunnan) ............... A. irregulare Löbl

6 Elytra slightly impressed between basal fourth and half; disc with four long inner rows and sometimes with one outer row consisting of 1–2 punctures. Punctuation of pronotal disc and frons equally coarse. Antennal segments 7–10 much darker than 1–6. Adult habitus as in Fig. 3 . Aedeagus as in Figs. 7–9 . BL 6.2–6.3 mm. PW 2.1 mm. China (Sichuan)......................................................................... A. alticola Löbl

- Elytra between basal fourth and half even; disc with four long inner rows and one short outer row; pronotal disc very finely punctuate. Punctures on pronotum disc much smaller than on frons. Antennae uniformly brown or 7th–10th segments slightly darkened. BL 5.0–6.0 mm. China (Fujian) ............ A. minus Pic

Figures

FIGURES 1 – 3. Habitus of Ascaphium. 1 — A. longlingense sp. nov.; 2 — A. ingentis sp. nov.; 3 — A. alticola Löbl. Scale bars 1 mm.

FIGURES 4 – 9. Details of aedeagus of Ascaphium longlingense sp. nov. (4 – 6) and A. alticola Löbl (7 – 9). 4, 7 — aedeagus, lateral view; 5, 8 — aedeagus, dorsal view; 6, 9 — sclerites of internal sac. Scale bars 0.25 mm.