Stenus perpinguis, Puthz, 2012

Puthz, V., 2012, On the Stenus LATREILLE 1797 from Taiwan with non-spotted elytra (Coleoptera, Staphylinidae) (327 Contribution to the Knowledge of Steninae), Linzer biologische Beiträge 44 (2), pp. 1431-1475 : 1447

publication ID

https://doi.org/ 10.5281/zenodo.5337424

DOI

https://doi.org/10.5281/zenodo.8392886

persistent identifier

https://treatment.plazi.org/id/03831324-7C4B-FFCF-FF01-FEDB3C36E5C8

treatment provided by

Carolina

scientific name

Stenus perpinguis
status

sp. nov.

Stenus perpinguis View in CoL nov.sp. ( Figs 4 View Figs 1-16 , 20 View Figs 17-29 , 66 View Figs 55-69 )

Type material: Holotype () and 9, 13 - paratypes: Taiwan: Nantou Hsien: Yushan National Park, Mun-Li Cliff , 2700m, 18.V.1991, A. Smetana (T 86) . Paratypes: 2, 6: ibidem, 13.V.1991, idem (T 79). Chiayi Hsien: 3, 12: ibidem, 27.IV.1990, idem (T 28) ; 3, 1: Yushan National Park, Ta-Ta Ghia , 2750m, 27.IV.1990, idem (T 27).- HT and PTT in coll. Smetana (Ottawa), PTT also in cN and in cP .

Description: About as in S. persubtilis nov.sp.

Length: 3.0- 3.7mm (forebody: 1.6-1.8mm).

PM of the HT: HW: 32; DE: 16; PW: 25; PL: 25; EW: 30; EL: 26; SL: 20.

Male: Metasternum broadly and shallowly impressed, punctation coarse and dense, interstices smaller than half diameter of punctures. Anterior sternites simple, sternite 5 with a very short, broad, shallow, impunctate impression near posterior margin, sternite 6 and 7 each with a broad and deep median impression, which is extremely finely and densely punctate and pubescent, posterior margin very shallowly emarginate. Sternite 8 (fig. 4). Sternite 9 with long, light apicolateral teeth. Aedeagus (fig. 20), median lobe triangularly narrowed, apex acute, expulsion hooks contiguous; parameres much longer than median lobe, with about 10+2 long setae in apical third.

Female: Sternite 8 at posterior margin slightly projecting, rounded. Apicolateral tooth of valvifer long. Spermatheca (fig. 66), infundibulum narrow and long.

Distinctly larger than S. persubtilis , median portion of frons comparatively flat, not distinctly exceeding beyond the level of medial eye margins. Pronotum and elytra with very deep impressions, median impression of pronotum broad and broadly impunctate. Abdominal punctation less dense than in S. persubtilis , interstices on tergite 7 distinctly larger than punctures.

Comparative notes: This new species is the largest of the Taiwanese species of the S. cephalotes -group. Beside of the sexual characters it may be distinguished from most of the close relatives by the strong impunctate median impression of the pronotum and by the relatively sparse punctation of the posterior abdomen.

Etymology: Because of its robust habitus I name this species " perpinguis " (Lat.= very plump).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Stenus

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