Stenus perfectus, 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 : 1452-1453

publication ID

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

DOI

https://doi.org/10.5281/zenodo.8393435

persistent identifier

https://treatment.plazi.org/id/03831324-7C4E-FFC9-FF01-FC943C4EE302

treatment provided by

Carolina

scientific name

Stenus perfectus
status

sp. nov.

Stenus perfectus View in CoL nov.sp. ( Figs 45 View Figs 42-54 , 74 View Figs 70-77 )

Type material: Holotype () and 7, 3 - paratypes: Taiwan: Nantou Hsien: Nankaoshan trail, Yuenhai Hut , 2350m, 4.V.1992, A. Smetana (T 112) . Paratypes: 2, 1: Nankaoshan, Tenchi Hut , 2800m, 6.V.1992, idem (T 13) ; 35, 36: ibidem, 2900m, 6.V.1992, idem (T 14) ; 13, 12: ibidem, 2895m, 7.V.1992, idem (T 119) ; 8, 12: 2.5 km SW Tenchi Hut , 2720m, 6, V.1992, idem (T 115).- HT and PTT in coll. Smetana (Ottawa), PTT also in cN, cT and in cP .

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

Length: 2.5-3.3 mm (forebody: 1.4-1.6mm).

PM of the HT: HW: 30; DE: 16; PW: 22; PL: 22.5; EW: 27; EL: 24; SL: 17.

Male: Metasternum shallowly impressed, coarsely and densely punctate, interstices smaller than half diameter of punctures. Anterior sternites simple, sternite 6 with a slightly finer punctation and pubescence medially, sternite 7 with finer and denser punctation and pubescence medially. Sternite 8 with a moderately shallow, moderately broad apical emargination (LS: ED= 47:3). Sternite 9 with short apicolateral teeth. Aedeagus (fig. 45), median lobe broadly subtruncate apically, expulsion hooks broad and short, separated; parameres longer than median lobe, with about 5-6 apical setae.

Female: Sternite 8 at posterior margin obtusely angled triangular, apex narrowly rounded. Valvifer with a short apicolateral tooth. Spermatheca (fig. 74) with a long and narrow infundibulum.

Median portion of frons distinctly exceeding the level of medial eye margins; pronotal and elytra impressions deep, punctation coarser than in S. persubtilis , elytral punctures becoming as large as median cross section of antennal segment 2; abdomen very densely punctate, interstices on tergite 7 distinctly smaller than half diameter of punctures.

Note: Amongst the PTT from T 114 there was found a monstrous male, which has broader, upwards bent paratergites and a very coarse, irregular elytral punctation. This may indicate that the broadness and position of the abdominal margination is a plastic character. This case also may be regarded as an example of atavism (as my friend Naomi suggests).

Comparative note: Also this new species has to be identified by examining the sexual characters.

Etymology: Because this species has a nice aedeagus I name it " perfectus " (Lat.= in good shape).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Stenus

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF