Anthobium nigrum

Shavrin, Alexey V. & Smetana, Aleš, 2018, A revision of Eastern Palaearctic Anthobium Leach, 1819 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini). II. fusculum group, and two additional species of the nigrum group, Zootaxa 4508 (4), pp. 451-506: 500

publication ID

https://doi.org/10.11646/zootaxa.4508.4.1

publication LSID

lsid:zoobank.org:pub:D268E210-6688-4B41-9A76-AE54C2FC07BA

persistent identifier

http://treatment.plazi.org/id/03EB87F8-F142-FF84-FF31-FEC479844C07

treatment provided by

Plazi

scientific name

Anthobium nigrum
status

 

Key to species of Anthobium nigrum   group (modified Shavrin & Smetana 2017)

1 Lateral edges of pronotum with very indistinct smooth crenulation, latero-apical margins of elytra with moderately large teeth. Head reddish-brown, pronotum, elytra and abdomen yellow-brown. Aedeagus as in Fig. 98 View FIGURES 96–99 . Habitus as in Fig. 95 View FIGURES 94–95 . Body length: 3.15–3.64 mm. Nepal................................................... A. flaveolum Shavrin & Smetana   , sp.n.

- Lateral edges of pronotum with distinct crenulation, latero-apical margins of elytra with small acute teeth. Body darker..... 2

2 Anterior angles of pronotum strongly protruded anteriad. Elytra markedly wider than long. Aedeagus as in Fig. 77 View FIGURES 74–78 ( Shavrin & Smetana 2017). Habitus as in Fig. 67 View FIGURES 66–67 ( Shavrin & Smetana 2017). Body length: 3.90–4.20 mm. China: Yunnan ................................................................................. A. conjunctum Shavrin & Smetana, 2017

- Anterior angles of pronotum slightly protruded anteriad. Elytra as wide as long or slightly longer than wide.............. 3

3 Punctation of pronotum very dense. Aedeagus as in Fig. 80 View FIGURES 79–82 ( Shavrin & Smetana 2017). Habitus as in Fig. 68 View FIGURES 68–72 ( Shavrin & Smetana 2017). Body length: 3.50–4.27 mm. China: Yunnan ............... A. densepunctatum Shavrin & Smetana, 2017

- Punctation of pronotum sparse.......................................................................... 4

4 Pronotum slightly flattened in cross section, with indistinct mediobasal impression. Aedeagus as in Fig. 72 View FIGURES 68–72 ( Shavrin & Smetana 2017). Habitus as in Fig. 66 View FIGURES 66–67 ( Shavrin & Smetana 2017). Body length: 4.15–4.37 mm. China: Gansu .................................................................................A. anishchenkoi Shavrin & Smetana, 2017

- Pronotum very convex, with deep mediobasal impression...................................................... 5

5 Middle portion of head distinctly convex, with indistinct transverse impression. Aedeagus as in Fig. 70 View FIGURES 68–72 ( Shavrin & Smetana 2017). Habitus as in Fig. 65 View FIGURE 65 ( Shavrin & Smetana 2017). Body length: 3.44–4.75 mm. India..... A. nigrum ( Cameron, 1924)  

- Middle portion of head flattened, without or with very indistinct transverse impression. Aedeagus different.............. 6

6 Elytra as wide as long. Body reddish-brown to black. Median lobe of aedeagus narrow, apical portions of parameres widened ( Shavrin & Smetana 2017: Fig. 82 View FIGURES 79–82 ). Habitus as in Fig. 69 View FIGURES 68–72 ( Shavrin & Smetana 2017). Body larger: 4.00– 4.71 mm. Nepal, Bhutan...................................................................... A. ivani Shavrin & Smetana, 2017  

- Elytra slightly longer than wide. Body brown. Median lobe of aedeagus moderately wide, apical portions of parameres narrow ( Fig. 96 View FIGURES 96–99 ). Habitus as in Fig. 94 View FIGURES 94–95 . Body smaller: 3.50 mm. Nepal............................ A. alticola ( Coiffait, 1977)