Platystethus nitens ( C. Sahlberg, 1832 )

Lü, Liang & Zhou, Hong-Zhang, 2015, Review of the Genus Platystethus Mannerheim (Coleoptera: Staphylinidae: Oxytelinae) in China, Zootaxa 3915 (2), pp. 151-205 : 182-185

publication ID	https://doi.org/10.11646/zootaxa.3915.2.1
publication LSID	lsid:zoobank.org:pub:BEAD42C0-1031-4C82-A71A-15A670C3467A
DOI	https://doi.org/10.5281/zenodo.6114344
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scientific name	Platystethus nitens ( C. Sahlberg, 1832 )
status

Treatment

8. Platystethus nitens ( C. Sahlberg, 1832) View in CoL

( Figs. 19 View FIGURE 19 & 20 View FIGURE 20 )

C. Sahlberg, 1832: 413 ( Oxytelus ; Type locality: Fennia australis; Helsingforsiae); Erichson, 1839: 587 ( Platystethus ; synonym of nodifrons); Baudi di Selve, 1870: 399 ( Stenus ); Bernhauer & Schubert, 1911: 123 ( Platystethus ); Scheerpeltz, 1933: 1108 ( Platystethus ); Herman, 1970: 402 ( Platystethus ); Hammond, 1971: 95, 101 ( Platystethus ; Britain; Azores to eastern Siberia and northeast China); Gusarov, 1992: 776 ( Platystethus ; synonymic notes); Zheng, 1998: 254 ( Platystethus ; China); Herman, 2001a: 1482 ( Platystethus ); Smetana, 2004: 518 ( Platystethus , subgenus Craetopycrus ); Yan, Li & Zheng, 2012: 342 ( Platystethus ; China).

Synonymy.

Platystethus splendens Heer, 1839: 208 View in CoL (Type locality: Genf); Kraatz, 1857: 845 (synonym of nitens View in CoL ).

Platystethus striatulus Heer, 1839: 208 View in CoL (Type locality: Lägerenberg); Kraatz, 1857: 845 (synonym of nitens View in CoL ).

Platystethus longicornis Lucas, 1846: 126 View in CoL (Type locality: Algeria: environs d’Alger; environs de Philippeville par l’Ouad- Safsaf); Fauvel, 1869: 492 (synonym of nodifrons); Fauvel, 1872: 184 [= 1873: 26] (synonym of nitens View in CoL ).

Platystethus fossor Wollaston, 1854: 603 View in CoL (Type locality: Madeira: Santa Anna); Wollaston, 1865: 515 (synonym of spinosus View in CoL ); Fauvel, 1902: 68 (synonym of nitens View in CoL ); Herman, 2001a: 1489 (synonym of spinosus View in CoL ); Schülke, 2004: 401 (synonym of nitens View in CoL ); Smetana, 2004: 518 (subgenus Craetopycrus ; synonym of nitens View in CoL ).

Platystethus aegyptiacus Motschulsky, 1857: 506 View in CoL (Type locality: Egypt sur les bords du Nil); Fauvel, 1872: 184 [= 1873: 26] (synonym of nitens View in CoL ).

Platystethus angustipennis Scriba, 1868: 158 View in CoL (Type locality: Florenz); Fauvel, 1872: 184 [= 1873: 26] (synonym of nitens View in CoL ).

Platystethus debilis Hochhuth, 1872: 161 View in CoL (Type locality: Not cited, presumably from Gouvernements Kiew and/or Volhynien ( Herman, 2001a: 1484)); Gusarov, 1992: 776 (synonym of nitens View in CoL ; lectotype designation).

Platystethus punctatus Fiori, 1915: 7 View in CoL (Type locality: Carlentini, Catania); Scheerpeltz, 1933: 1108 (aberration of nitens View in CoL ); Herman, 2001a: 1484 (synonym of nitens View in CoL ).

Platystethus laevigatus Fiori, 1915: 8 View in CoL (Type locality: Carlentini); Scheerpeltz, 1933: 1108 (aberration of nitens View in CoL ); Herman, 2001a: 1484 (synonym of nitens View in CoL ).

Material examined. 48 specimens, 25♂♂, 23♀♀. CHINA: 2♀♀, 1914. VI.18, E. Licent leg. [with “AE.24” or “AE.27” on the downside of each label]; 1♀, 1927. VI.29, E. Licent leg. (IZ-CAS). Beijing: 2♂♂, 1♀♀, Chaoyang Dt., Datun Township [40.00ºN 116.41ºE], 1996. IV.21, H.-Z. Zhou leg. (IZ-CAS). Yunnan: 4♂♂, 4♀♀, Yuanmo Co., Laocheng Township, Maochang Village, 2005. VII.23, Q. Li leg. (IZ-CAS). Hebei: 16♂♂, 7♀♀, Prov. Hopeh [=Hebei], Sienhsien [=Xianxian or Xian Co., 38.19ºN 116.12ºE], Platystethus nitens (Sahlb.) det. P.M.Hammond 1980; 4♀♀, 1936. IV.8–VII.2, Platystethus nitens (Sahlb.) det. P.M.Hammond 1981; 2♂♂, 2♀♀, “Liou-Sinn” ( IZ- CAS). Liaoning: 1♀, Xinmin Winery [42.00ºN 122.83º2], 1959. VI.23, in vinasse, “7052”[?], Platystethus nitens (Sahlb.) det. P.M.Hammond 1980 (IZ-CAS). EGYPTE [ EGYPT]: 1♂, Ismalia, Avril [April], F. Lotte leg. ( IZ- CAS); 1♀, “Awriah” [?], 1936. VI.13, F. Lotte leg., Platystethus nitens Sahlb. det. anonym (IZ-CAS).

Redescription. Body shiny and brown; mandibles, maxillary palpi, antennae, elytra and legs lighter; forebody dorsal surface delicate, abdomens scarcely coriaceous. Small in size, length [average]: ♂, 2.8 mm; ♀, 2.6 mm.

Male. Head ( Figs. 19 View FIGURE 19 A; 20A) broadest at eyes or temples. Disc coriaceous, nearly glabrous, with punctures dense and coarse. Clypeus transverse and scarcely punctate, protruding beyond anterior border of supra-antennal ridges, with anterior margin shallowly emarginate in middle, furnished a pair of sharp and slender spines. Epistomal suture with middle portion absent, lateral portions posteromedially directed. Supra-antennal ridges moderately elevated. Vertex depressed in anterior part, slightly convex in center; mid-longitudinal suture fine, posteriorly reaching occipital suture. Eyes slightly convex, shorter than temples, with fine facets; orbital sulcus almost invisible. Long and deep longitudinal groove sculptured throughout mesial side of eye and temple; two other short grooves paralleled mesially. Temple not dilated laterally. Neck not constricted. Occipital suture slightly curved, present only in middle, with large setal fovea at each end. Mandible ( Fig. 20 View FIGURE 20 C) short, incurved at apex; bearing 3 prominent teeth on inner edge.

Pronotum ( Figs. 19 View FIGURE 19 A; 20A) slightly narrower than head or equal, widest at near anterior 1/4, with midlongitudinal sulcus present whole length, with punctures as large as but sparser than in head, with micro-striae absent; anterior margin bi-emarginate, anterior lateral angles prominent, no posterior angles; lateral and posterior margins integrated and evenly rounded, weakly crenulate in front half. Scutellar impression ( Fig. 20 View FIGURE 20 A) bi-reniform in anterior part. Elytra ( Fig. 20 View FIGURE 20 A) with posterior margin truncate, elytral suture dehiscent or partly overlapping.

Abdominal sternite VII ( Figs. 19 View FIGURE 19 C; 20E) with posterior margin nearly straight without modification. Sternite VIII ( Figs. 19 View FIGURE 19 D; 20F) tri-partitioned by 2 curved narrow sutures, middle part truncate on posterior margin, without mid-longitudinal internal ridge, lateral parts separated by middle part but touched at anterior margin, each with two teeth at mesial side of posterior margin: one sharp, one dull; basal ridge interrupted in middle and subbasal ridge with middle portion absent.

Aedeagus ( Figs. 19 View FIGURE 19 G–I; 20I –M) with median lobe inflated at base and gradually narrowed apically; apical orifice fissured to middle of ventral surface, edges of ventral fissure sharply protruding into a pair of long spines (not as sharp as in P. cornutus ); internal sac membranous and rolling into watch-spring-shape at base. Paramere arm-like, basal arm with furrow on ventral surface; apical arm slightly explanate and furnished with one seta at apex and one smaller seta at near apical 1/3, and with pits scattered.

Female. Head and pronotum ( Figs. 19 View FIGURE 19 B; 20B) smaller; clypeus more protruding, anterior margin truncate with two reduced denticles; mid-longitudinal suture nearly reduced; eyes more convex; only one long groove at mesial side of eye and temple. Mandibles ( Fig. 20 View FIGURE 20 D) similar to male, with teeth more prominent. Pronotal anterior margin ( Figs. 19 View FIGURE 19 B; 20B) slightly bi-emarginate. Sternite VIII ( Figs. 19 View FIGURE 19 E; 20G) not partitioned, without teeth, with posterior margin gradually narrowed to middle.

Spermatheca ( Figs. 19 View FIGURE 19 F; 20H) comma-formed, basal part inflated into globoid, apical part thin and sharp, shorter and a little curved.

Remarks. Similar to P. rugifrons Bernhauer , but the latter without spines on the anterior margin of male clypeus, just with tiny teeth (cf. Fig. 34 View FIGURE 34 F–J).

Distribution. China (Beijing, Gansu, Hebei, Heilongjiang, Liaoning, Ningxia, Shanghai, Yunnan); Afghanistan, Algeria, Azores, Canary Islands, Cyprus, Egypt, Europe, India, Iran, Kazakhstan, Madeira, Mongolia, Morocco, Pakistan, Turkey, Uzbekistan.

References

Bernhauer, M. & Schubert, K. (1911) Staphylinidae II (Pars 29). In: Junk, W. & Schenkling, S. (Eds.), Coleopterorum Catalogus. Vol. V. W. Junk, Berlin, pp. 87 - 190.

Erichson, W. F. (1839) Die Kafer der Mark Brandenburg. Vol. 1 (2). F. H. Morin, Berlin, 356 pp. [pp. 385 - 740]

Fauvel, A. (1869) Remarques synonymiques sur les staphylinides du Catalogus Coleopterorum de MM v. Harold et Gemminger. L'Abeille. Memoires d'Entomologie, 5, 479 - 494.

Fauvel, A. (1872) Faune Gallo-Rhenane ou species des insectes qui habitent la France, la Belgique, la Hollande, le Luxembourg, la prusse Rhenane, la Nassau et la Valais avec tableaux synoptiques et planches gravees. Vol. 3. Livraison 3. F. le Blanc-Hardel, Caen, 214 pp.

Fauvel, A. (1902) Catalogue des Staphylinides de la Barbarie de la Basse-Egypte et des Iles Acores, Maderes, Salvages et Canaries. Revue d'Entomologie publiee par la Societe Francaise d'Entomolodie. Caen, 21, 45 - 189.

Fiori, A. (1915) Appunti sulla fauna coleotterologica dell'Italia meridionale e della Sicilia. Rivista Coleotterologica Italiana, 13, 5 - 17, 57 - 84.

Gusarov, V. I. (1992) New and little-known Palearctic Staphylinidae (Coleoptera) [Нovыi i Мaлoizviсtныi Paлiaрkticiсkii сtaфiлiнidы (Coleoptera, Staphylinidae)]. Entomological Review [Eнtoмoлogiciсkoi obozрiнii]. Entomological Review [Eнtoмoлogiciсkoi obozрiнii], 71, 775 - 788, 951.

Hammond, P. M. (1971) Notes on British Staphylinidae 2. - On the British species of Platystethus Mannerheim, with one species new to Britain. Entomologist's Monthly Magazine, 107, 93 - 111.

Heer, O. (1839) Fauna Coleopterorum Helvetica. Vol. 1 (2). Orelii, Fuesslini et Sociorum, Turici, 216 pp. [pp. 145 - 360]

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Herman, L. H. (2001 a) Catalog of the Staphylinidae (Insecta, Coleoptera): 1758 to the end of the second millennium. vol. 3, Oxyteline group. Bulletin of the American Museum of Natural History, No. 265, 1067 - 1806.

Hochhuth, J. H. (1872) Enumeration der in den russischen Gouvernements Kiew und Volhynien bisher aufgefundenen Kafer. Bulletin de la Societe Imperiale des Naturalistes de Moscou, 44, 85 - 177.

Kraatz, G. (1857) Naturgeschichte der Insecten Deutschlands. Abt. 1. Coleoptera. Zweiter Band. Lief. 3 - 6. Nicolai, Berlin, 704 pp. [pp. 377 - 1080]

Lucas, P. H. (1846) Histoire naturelle des animaux articules. Deuxieme partie. Insectes. In Exploration scientifique de l'Algerie.... Sciences Physiques. Zoologie. 2. Gouvernement Nationale, Paris, 590 pp.

Motschulsky, V. de (1857) Enumeration des nouvelles especes de Coleopteres rapportes de ses voyages. Bulletin de la Societe Imperiale des Naturalistes de Moscou, 30, 490 - 517.

Sahlberg, C. R. (1832) Insecta Fennica, dissertationibus academicis, A. 1817 - 1834 editis. Pars I. A. Frenckelliana, Helsingforsiae, 409 - 440.

Scheerpeltz, O. (1933) Staphylinidae VII (Pars 129). In: Junk, W. & Schenkling, S. (Eds.), Coleopterorum Catalogus. Vol. VI. W. Junk, Berlin, pp. 989 - 1500.

Schulke, M. (2004) On some species of Staphylinidae described by T. V. Wollaston from islands of the Madeira archipelago (Coleoptera: Staphylinidae: Omaliinae, Oxytelinae et Staphylininae). Linzer Biologische Beitrage, 36, 393 - 415.

Scriba, W. (1868) Neue europaische Staphylinen. Berliner Entomologische Zeitschrift, 12, 153 - 160. http: // dx. doi. org / 10.1002 / mmnd. 18680120108

Baudi di Selve, F. (1870) Coleopterorum messis in insula Cypro et Asia minore ab Eugenio Truqui congregatae recensitio: de Europaeis notis quibusdam additis. Berliner Entomologische Zeitschrift, 13 (1869), 369 - 418.

Smetana, A. (2004) Subfamily Oxytelinae Fleming, 1821. In: Lobl, I. & Smetana, A. (Eds.), Catalogue of Palaearctic Coleoptera: Hydrophiloidea - Histeroidea - Staphylinoidea. Vol. 2. Apollo Books, Stenstrup, pp. 511 - 535.

Wollaston, T. V. (1854) Coleoptera Hesperidum, being an enumeration of the Coleopterous Insects of the Cape Verde Archipelago. John van Voorst, London, 634 pp.

Wollaston, T. V. (1865) Coleoptera atlantidium, being an enumeration of the coleopterous insects of the Madeiras, Salvages, and Canaries. John van Voorst, London, xlvii + 526 + 140 pp.

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Figures

FIGURE 19. Platystethus nitens (Sahlberg, 1832) I: A, head and pronotum ♂ (dorsal view); B, head and pronotum ♀ (dorsal view); C, sternite VII ♂; D, sternite VIII ♂; E, sternite VIII ♀; F, spermatheca; G, aedeagus (ventral view); H, median lobe of aedeagus (lateral view); I, right paramere (in situ) of aedeagus (lateral view). Scales: A, B = 0.3 mm; F = 0.05 mm; rest, 0.2 mm.

FIGURE 20. Platystethus nitens (Sahlberg, 1832) II: A, forebody ♂ (dorsal view); B, head and pronotum ♀ (dorsal view); C, right mandible ♂; D, right mandible ♀; E, sternite VII ♂; F, sternite VIII ♂; G, sternite VIII ♀; H, spermatheca; I, aedeagus (ventral view); J, aedeagus (dorsal view); K, aedeagus (ventero-apical view); L, median lobe of aedeagus (lateral view); M, right paramere (in situ) of aedeagus (lateral view). Scales: A, B = 0.5 mm; H = 0.05 mm; rest, 0.2 mm.

FIGURE 34. Platystethus praetermissus Eppelsheim, 1893 (A, B), syntype of P. spinicornis Luze, 1904 (C – E), and syntypes of P. r u gif ron s Bernhauer, 1900 (F – J): A, C, habitus ♂ (dorsal view); B, D, F, forebody ♂ (dorsal view); E, labels of P. spinicornis (syntype in FMNH); G, forebody ♀ (dorsal view); H, sternite VIII ♂ (ventral view); I, J, labels of P. rugifrons (syntypes in SDEI). Scales: A, C = 1 mm; B, D, F, G = 0.5 mm, H = 0.1 mm. [Photos C – E © The Field Museum, FMNHINS 2819581, Photographer Kelsey Keaton, used by permission]