Stenus cirrus

Liu, Sheng-Nan & Tang, Liang, 2017, Seven new species of the Stenus cirrus group (Coleoptera, Staphylinidae) from Guangxi, South China, Zootaxa 4268 (2), pp. 238-254: 250-251

publication ID

https://doi.org/10.11646/zootaxa.4268.2.4

publication LSID

lsid:zoobank.org:pub:75749A7A-2658-485E-A285-CD175A787C71

persistent identifier

http://treatment.plazi.org/id/03FC776F-7D03-A451-FF51-F7B7FA0F401F

treatment provided by

Plazi

scientific name

Stenus cirrus
status

 

Key to species of the Stenus cirrus  group of Guangxi 

1 Elytra without spots....................................................................................2

- Elytra with spots..................................................................................... 3

2 Head distinctly narrower than elytra; punctation of forebody mostly well delimited; longitudinal furrow of pronotum indistinct. Habitus: Figs. 7–8View FIGURES 7 – 8; sexual characters: Figs. 41–48......................................... S. damingshanus  sp. n.

- Head wider than elytra; punctation of forebody confluent; longitudinal furrow of pronotum very long and deep. Habitus: Figs. 13–14View FIGURES 13 – 14; sexual characters: Figs. 59–66View FIGURES 59 – 66...................................................... S. hechiensis  sp. n.

3 Head narrower than elytra. Aedeagus: Fig. 3View FIGURES 3 – 4 in Puthz, 1998; BL: 3.5–4.7 mm. China: Guangxi, Zhejiang ......................................................................................... S. guangxiensis Rougemont, 1984   

- Head distinctly wider than elytra........................................................................ 4

4 Elytra much shorter than width, EL/EW=0.72–0.78. Habitus: Figs 5, 6View FIGURES 5 – 6; sexual characters: Figs. 31–40View FIGURES 23 – 32View FIGURES 33 – 40. BL: 3.5–3.9 mm .................................................................... S. zhangdinghengi Pan Tang, Zhao & Li, 2012 

- Elytra at most slightly shorter than width, EL/EW=0.84–1.07................................................. 5

5 Elytral spot longer, extending towards shoulder............................................................ 6

- Elytral spot shorter, not extending towards shoulder......................................................... 8

6 Smaller species, BL= 3.5–4.7 mm and FL=2.0 mm. Habitus: Figs.7–8View FIGURES 7 – 8; sexual characters: Figs 41–49. BL: 4.3 mm ........................................................................... S. maoershanus Pan Tang, Zhao & Li, 2012 

- Larger species, BL= 5.3–7.9 mm and FL= 2.4–2.9 mm ....................................................... 7

7 Larger species, FL= 2.9 mm; Punctation of frons sparse; median longitudinal pronotal furrow narrow and shallow. Habitus: Figs. 11–12View FIGURES 11 – 12; sexual characters: Figs. 54–58View FIGURES 54 – 58.............................................. S. lianhuashanus  sp. n.

- Smaller species, FL= 2.4–2.8 mm; Punctation of frons dense; median longitudinal pronotal furrow wide and deep. Habitus: Figs. 1–2View FIGURES 1 – 2; sexual characters: Figs. 15–22View FIGURES 15 – 22.................................................... S. hujiayaoi  sp. n.

8 HW/EW=1.09–1.20.................................................................................. 9

- HW/EW=1.01–1.07................................................................................. .. 10

9 Larger species, BL= 3.6–5.2 mm, FL= 1.8–2.2 mm; head without distinct impunctate midline. Habitus: Figs. 3–4View FIGURES 3 – 4; sexual char- acters: Figs. 23–32View FIGURES 23 – 32........................................................................ S. bullatus  sp. n.

- Smaller species, BL= 3.3 mm, FL= 1.6 mm; head with broad impunctate midline. Habitus: Figs. 9–10View FIGURES 9 – 10; sexual characters: Figs. 49–53View FIGURES 49 – 53............................................................................... S. jinxiuensis  sp. n.

10 Larger species, BL= 4.3–5.2 mm; aedeagus without expulsion clasps. Habitus: Figs. 5–6View FIGURES 5 – 6; sexual characters: Figs. 33–40View FIGURES 33 – 40.............................................................................................. S. exesus  sp. n.

- Smaller species, BL=3.0– 3.5 mm; aedeagus with expulsion clasps (as in Fig. 1View FIGURES 1 – 2 in Puthz, 1983); female unknown. China: Guangxi ....................................................................... S. splendidulus Puthz, 1983   

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Stenus