Micrillus nigriceps ( CAMERON 1931) Assing, 2013

Assing, V., 2013, On the Palaearctic and Oriental species of Scymbalium and Micrillus (Coleoptera: Staphylinidae: Paederinae), Linzer biologische Beiträge 45 (2), pp. 1479-1520 : 1496-1497

publication ID

https://doi.org/ 10.5281/zenodo.5301289

DOI

https://doi.org/10.5281/zenodo.6512328

persistent identifier

https://treatment.plazi.org/id/1974879E-FFE4-FFCB-FF04-EFEFFEE3FC48

treatment provided by

Marcus

scientific name

Micrillus nigriceps ( CAMERON 1931)
status

nov.comb., nov.stat.

Micrillus nigriceps ( CAMERON 1931) View in CoL , nov.comb., nov.stat.

( Figs 14-16 View Figs 9-16 , Map 3 View Map 3 )

Scymbalium indicum nigriceps CAMERON 1931: 214 f.

Type material examined Lectotype, present designation: "Calcutta. / Atkinson Coll. 92-3 / Syntype / M. Cameron. Bequest. B.M. 1955-147. / Lectotypus Scymbalium nigriceps Cameron , desig. V. Assing 2013 / Micrillus nigriceps (Cameron) , det. V. Assing 2013" ( BMNH). Paralectotypes: 3, 2 sex? [all glued on the same label; forebodies of two specimens missing]: same labels as lectotype, but with additional label " Scimbalium indicum Epp. v. nigriceps Cam. " (BMNH).

Additional material examined: India: 1, Meghalaya, Cherrapunjee , 1200 m, 16.V.1976, leg. Wittmer & Baroni Urbani ( NHMB) .

Comment: Scymbalium nigriceps was originally described as a "variety" of S. indicum EPPELSHEIM. The description is based on an unspecified number of syntypes from "Calcutta" ( CAMERON 1931). Six partly incomplete syntypes were located in the Cameron collection at the BMNH. A male is designated as the lectotype. An examination of the type material revealed that S. nigriceps represents a distinct species and belongs to the genus Micrillus .

Redescription: Body length 4.5-5.5 mm; length of forebody 2.7-2.9 mm. Coloration: body including appendages pale reddish, with the head somewhat darker.

External characters similar to those of M. indicus .

: sternite VIII distinctly oblong, posterior excision narrow and rather deep ( Fig. 14 View Figs 9-16 ); aedeagus ( Figs 15-16 View Figs 9-16 ) very small, 0.35 mm long, strongly asymmetric, and of distinctive shape.

Comparative notes: The similar external and male sexual characters suggest that M. nigriceps is closely related to M. indicus , from which it is distinguished by the darker head, the shape of the male sternite VIII (slightly more oblong), and the slightly different shape of the smaller aedeagus (apex of ventral process shorter, internal structure of different shape).

Distribution: This species is currently known only from northeastern India ( Map 3 View Map 3 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Micrillus

Loc

Micrillus nigriceps ( CAMERON 1931)

Assing, V. 2013
2013
Loc

Scymbalium indicum nigriceps

CAMERON M 1931: 214
1931
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