Quedius Stephens 1829
Creators: name: Smetana, Aleš
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Quedius

description: Key to winged species of the muscicola- group of mainland China
1. Legs uniformly testaceous............................................................................... 2
- At least tibiae of hind legs distinctly darkened, sometimes tibiae of middle legs and femora and tibiae of hind legs distinctly darkened............................................................................................ 5
2. Aedoeagus and paramere of characteristic shape (Figs. 25, 26), sensory peg setae on underside of paramere quite numerous, situated as in Fig. 26. Visible abdominal tergites one through five each with impression at each side laterad of midline, impressions becoming gradually less distinct toward apex of abdomen. Punctation of abdominal tergites in general moderately dense (details in description). Length 5.5 mm ..................................................... Q. hegesias sp. nov.
- Aedoeagi and parameres of different shapes, with differently situated sensory peg setae. Impressions on abdominal tergites, if present, inconspicuous, mostly best observable on first three visible tergites. Punctation of abdominal tergites in general sparse to very sparse (details in description)...................................................................... 3
3. Apical portion of median lobe of aedoeagus narrow, with apex subacute (Figs. 12, 13). Length 4.8 mm ... Q. filiolus sp. nov.
- Apical portion of median lobe of aedoeagus variably wide, with apex arcuate to variably rounded (Figs. 4–6)............ 4
4. Aedoeagus pale, paramere narrow, usually more or less narrowed anteriad (Figs. 4, 7, 8). Sensory peg setae on underside of paramere forming two lateral longitudinal rows (Figs. 7, 8). Pronotum about as long as wide, no more than moderately narrowed anteriad. Punctation of elytra fine and dense. Length 4.8–6.0 mm........................ Q. muscicola Cameron
-... Aedoeagus dark, paramere relatively wide, largely parallelsided. Sensory peg setae on underside of paramere forming one medial longitudinal group (Fig. 21). Pronotum narrow, markedly narrowed anteriad. Punctation of elytra coarse and sparse. Length 4.8 mm .......................................................................... Q. hecato sp. nov
5. First three visible abdominal tergites each with three shallow, inconspicuous impressions at base (middle impression sometimes missing); each lateral impression with slightly denser punctation and pubescence than on rest of surface............ 6
- First two visible abdominal tergites each with inconspicuous impression at each side, or tergites missing any impressions... 7
6. Median lobe of aedoeagus anteriorly dilated before narrowed into apical portion (Figs. 45, 47). Paramere narrow, parallelsided (Fig. 45). First four segments of male front tarsus markedly dilated, second segment as wide as apex of tibia. Length 4.3–5.0 mm........................................................................... Q. impressiventris sp. nov.
- Median lobe of aedoeagus anteriorly not dilated before narrowed into apical portion (Figs. 57, 58). Paramere wider, fusiform (Figs. 56, 59). First four segments of male front tarsus slightly dilated, second segment narrower that apex of tibia. Length 4.7– 5.0 mm......................................................................... Q. tergimpressus sp. nov.
7. Pubescence of elytra golden-yellowish.................................................................... 8
- Pubescence of elytra dark, brownish to dark brownish....................................................... 10
8. Middle and hind tibiae and hind femora darkened. First four segments of male front tarsus hardly dilated, segment 2 narrower than apex of tibia (ratio 0.85). Aedoeagus as in Figs. 80, 81. Length 3.9–4.2 mm ...................... Q. dryas sp. nov.
- Only hind tibiae darkened. First four segments of male front tarsus markedly dilated, segment 2 slightly wider than apex of tibia (ratios 1.14 and 1.15). Aedoeagi different (Figs. 65, 72)................................................... 9
9. Median lobe of aedoeagus very narrow, in almost straight line narrowed into extremely narrow apical portion with quite acute apex (Figs. 65, 66). Coloration of pronotum sexually dimorphic, dark brown becoming paler toward lateral margins in male, black in female. Length 4.0– 4.8 mm ........................................................ Q. meilixue sp. nov.
- Median lobe of aedoeagus moderately narrow, parallelsided, anteriorly narrowed into short apical portion with acute apex (Figs. 72, 73). Coloration of pronotum black in both sexes. Length 4.0– 4.5 mm ........................ Q. zetes sp. nov.
10. Aedoeagus long, very narrow; paramere quite narrow, elongate, more or less parallelsided to narrowly fusiform, with narrowly arcuate apex not quite reaching, or reaching, apex of median lobe (Figs. 31, 34, 35). Tergite 10 of male genital segment shaped as in Fig. 28, sparingly setose in front of long setae at apical margin. Sternite 9 of male genital segment with general setae numerous, short (Fig. 29). Length 4.8–5,4 mm. Widely distributed species................... Q. maculiventris Bernhauer
- Aedoeagus markedly shorter, less narrow; paramere wider, fusiform, with narrowly arcuate apex not reaching apex of median lobe (Figs. 40, 41). Tergite 10 of male genital segment shaped as in Fig. 38, with only two short setae on middle portion in front of long setae (Fig. 38). Sternite 9 of male genital segment with general setae sparse, markedly long (Fig. 39). Length 4.9 mm. Eastern Sichuan: Huaying Shan..................................................... Q. optabilis Bernhauer
description: Published as part of Smetana, Aleš, 2012, Contributions to the knowledge of the Quediina (Coleoptera, Staphylinidae, Staphylinini) of China. Part 42. Genus Quedius Stephens, 1829. Subgenus Raphirus Stephens, 1829. Section 10, pp. 43-68 in Zootaxa 3156 on page 66, DOI: 10.11646/zootaxa.3156.1.2, http://zenodo.org/record/210515