Rugilus (Rugilus) curvatus, Assing, 2013

Assing, V., 2013, A revision of Palaearctic and Oriental Rugilus. III. Five new species from the Palaearctic region and additional records (Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 45 (1), pp. 171-190 : 176

publication ID

https://doi.org/ 10.5281/zenodo.4507307

DOI

https://doi.org/10.5281/zenodo.6521058

persistent identifier

https://treatment.plazi.org/id/03E087C3-6971-7A26-DDA8-29F70702FA7B

treatment provided by

Felipe

scientific name

Rugilus (Rugilus) curvatus
status

sp. nov.

Rugilus (Rugilus) curvatus View in CoL nov.sp.

( Figs 8-12 View Figs 8-12 )

Type material: Holotype ♂: " Nepal-Himal 1996, Annapurna mts., lg. Schmidt, Jäger / N-Pokhara, oberh. Chipli , 2400 m, 22.4., Nyaulikharka BG / Holotypus ♂ Rugilus curvatus sp.n., det. V. Assing 2012" ( SNSD) . Paratype ♂: "Nepal-Himal 1996, Annapurna mts., lg. Schmidt, Jäger / 5 km n. Siklis, Kyojo Kharka, 2600 mNN, 29.IV." ( cAss).

Etymology: The specific epithet (Latin, adjective: curved) refers to the shape of the ventral process of the aedeagus in lateral view.

Description: Body length 5.2-5.3 mm; length of forebody 2.9-3.0 mm. Externally similar to R. rectus , but distinguished as follows:

Head ( Fig. 8 View Figs 8-12 ) 1.06-1.08 times as broad as long; punctation less extensively confluent.

♂: sternite VII ( Fig. 9 View Figs 8-12 ) not distinctly modified; sternite VIII ( Fig. 10 View Figs 8-12 ) with not very deep, broadly V-shaped posterior excision; aedeagus ( Figs 11-12 View Figs 8-12 ) 0.65 mm long; ventral process strongly curved in lateral view, apically acute in ventral view.

Comparative notes: As can be inferred from the similar external and male sexual characters, R. curvatus is closely allied to R. quadridentatus (Dhaulagiri) and R. rectus (Annapurna) . From the former, it is distinguished by the absence of a median posterior excision of the male sternite VII, the different shape of the posterior excision of the male sternite VIII, and by the differently shaped ventral process of the aedeagus. From the latter, it differs by the much shallower posterior excision of the male sternite VIII and by the much shorter and distinctly curved ventral process of the aedeagus. For additional characters separating it from R. rectus see the description above. For illustrations of the male sexual characters of R. quadridentatus see Fig. 7 View Figs 1-7 and ASSING (2012a).

Distribution and natural history The type specimens were found in two localities in the southern Annapurna range, some 15-20 km to the north of Pokhara, at altitudes of 2400 and 2600 m.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

SubFamily

Paederinae

Genus

Rugilus

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