Stenus tenuimargo, Cameron, 1930

Lv, Wei-Xiang, Zhao, Cai-Yun & Zhou, Hong-Zhang, 2018, Taxonomy of Stenus tenuimargo group (Coleoptera, Staphylinidae, Steninae) with descriptions of two new species from China, Zootaxa 4394 (4), pp. 490-516 : 491-492

publication ID

https://doi.org/ 10.11646/zootaxa.4394.4.2

publication LSID

lsid:zoobank.org:pub:134CE38C-D74E-47B8-ABA1-5BBF22892900

DOI

https://doi.org/10.5281/zenodo.5960694

persistent identifier

https://treatment.plazi.org/id/FD4A8793-FFEC-903D-4096-FC45FA64FEEE

treatment provided by

Plazi

scientific name

Stenus tenuimargo
status

 

Key to species of the Stenus tenuimargo View in CoL group from China

1. Elytra without orange spot.............................................................................. 2

- Elytra with orange spot................................................................................. 3

2. Elytra much longer than broad (EL: EW>1.3), sternum 9 apicolaterally with long teeth. Aedeagus as Figs. 19 View FIGURE 19 & 20 A. Sper- matheca as Figs. 19 View FIGURE 19 & 20 H............................................................. S. semilineatus Puthz View in CoL

- Elytra slightly longer than broad (EL: EW <1.1), sternum 9 apicolaterally with moderate long teeth. Aedeagus as Figs. 1 E View FIGURE 1 & 2 A...................................................................... S View in CoL View FIGURE2 . nabanhensis Lv et Zhou, sp. nov.

3. Abdomen with distinct paratergites........................................................................ 4

- Abdomen without distinct paratergites but with a line-like lateral margination...................................... 7

4. Elytra spot broader, extending to the declining sides of elytra. Aedeagus as Figs. 5 View FIGURE 5 & 6 A.......... S View in CoL View FIGURE 6 . jaccoudi Rougemont

- Elytral spot less broad, not extending to the declining sides of elytra............................................. 5

5. Elytra much broader than head (EW: HW>1.2). Aedeagus as Figs.17 View FIGURE17 & 18 A.......................... S View in CoL View FIGURE18 . perroti Puthz

- Elytra less broad (EW: HW <1.15)........................................................................ 6

6. Paratergites with only one row of punctures. Aedeagus as Figs. 11–14 A View FIGURE 11 View FIGURE 12 View FIGURE13 View FIGURE14 . Spermatheca as Figs. 11 View FIGURE 11 & 12 H.................................................................................................. S View in CoL View FIGURE 12 . notaculipennis Puthz

- Paratergites with dense, side by side punctures. Aedeagus as illustrated in Rougemont (1983b: Fig. 19 View FIGURE 19 )..................................................................................................... S. subthoracicus Puthz View in CoL

7. Species from Taiwan, elytra relatively broad................................................................ 8

- Species from Continental China, elytra less broad........................................................... 11

8. Elytra longer (EW: EL<0.92 [0.88–0.94]), elytral spot distinctly extending into anterior half of elytra.................. 9

- Elytra shorter (EW: EL>0.92 [0.93–0.98])................................................................ 10

9. Abdominal punctuation coarse and dense. Aedeagus as Puthz (2011: Fig. 107). Spermatheca as Puthz (2011: Fig. 21 View FIGURE 21 ). BL: 5.0– 6.0 mm (FB: 2.6–2.8 mm)................................................................ S. miwai Bernhauer View in CoL

- Abdominal punctuation less coarse, sparser. Aedeagus as Puthz (2011: Fig. 108). Spermatheca as Puthz (2011: Fig. 20). BL: 5.0–6.0 mm (FB: 2.4–2.7 mm)............................................................ S. mithracifer Puthz View in CoL

10. Elytral spot smaller, not extending to the posterior margin of elytra, abdominal punctuation less coarse. Aedeagus as Puthz (2011: Fig. 116). Spermatheca as Puthz (2011: Fig. 16 View FIGURE16 ). BL: 5.5–6.5 mm (FB: 2.4–2.7 mm)........ S. electrigemmeus Puthz View in CoL

- Elytral spot larger, extending to the posterior margin of elytra, abdominal punctuation coarser. Aedeagus as Puthz (2011: Fig. 19 View FIGURE 19 ). Spermatheca unknown. BL: 6.5 mm (FB: 2.6 mm)..................................... S. electrigemmatus Puthz View in CoL

11. Micropterous....................................................................... S. marginiventris Puthz View in CoL

- Macropterous........................................................................................ 12

12. Abdominal punctuation coarser and extremely dense, interstices on tergite VII smaller than half diameter of punctures; smaller. Aedeagus as Figs. 21 View FIGURE 21 &. 22 A............................................................. S View in CoL View FIGURE 22 . solstitialis Zheng

- Abdominal punctuation less coarse or sparser, interstices on tergite VII distinctly larger than half diameter of punctures... 13

13. Elytra trapeziform, elytral spot longer.................................................................... 14

Elytra subquadrate, elytral spot smaller................................................................... 15 14. Elytral spot about 2/3 as long as one elytron. Aedeagus as Puthz (2013b: Fig. 401)............. S. grandimaculatus Benick View in CoL

- Elytral spot smaller, about 1/3 as long as one elytron. Aedeagus as Figs. 15 View FIGURE15 & 16 A View FIGURE16 . Spermatheca as Figs. 15 View FIGURE15 & 16 H............................................................................................... S View in CoL View FIGURE16 . oculifer Puthz

15. Punctation of tergite VII denser, interstices about as wide as diameter of punctures. Aedeagus as Figs. 3 E View FIGURE 3 & 4 A View FIGURE 4 . Spermatheca as Figs. 3 I View FIGURE 3 & 4 H...................................................... S View in CoL View FIGURE 4 . zhangyejunianus Lv et Zhou, sp. nov

- Punctation of tergite VII sparser, interstices much wider than diameter of punctures. Aedeagus as Figs. 23 View FIGURE 23 & 24 A............................................................................................ S View in CoL View FIGURE 24 . tenuimargo Cameron

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

SubFamily

Steninae

Genus

Stenus

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