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Coleoptera: Bostrichoidea) Studies and Reports Taxonomical Series 13 (1): 233-249, 2017 Six new Palaearctic Ptinidae (Coleoptera: Bostrichoidea) Petr ZAHRADNÍK Forestry and Game Management Research Institute Strnady 136, CZ-150 00 Praha 5 - Zbraslav e-mail: zahradní[email protected] Taxonomy, new species, new subgenus, Coleoptera, Ptinidae, Dorcatoma, Stagetus, Megorama, Xyletinus, Oculidorcatoma, Palaearctic Region Abstract. Six new species and one new subgenus from family Ptinidae are described from the Palaearctic Region (Hungary, Syria, Oman). There are Dorcatoma (Oculidorcatoma) hungarica subg. and sp. nov. (Hungary), D. (Pilosodorcatoma) syriaca sp. nov. (Syria), Stagetus nemethi sp. nov (Syria), Xyletinus (Xyletinus) rubroapex sp. nov. (Syria), X. (X.) splendidus sp. nov. (Syria) and Megorama ilniczkyi sp. nov. (Oman). Drawings of body details, especially aedeagus, are presented for all newly described species. INTRODUCTION In the Palaearctic Region roughly 600 species from family Ptinidae in 183 genera (Zahradník 2015a; Zahradník & Háva 2014) can be found. Every year, new species and sometimes also new genera are described, so this number is increasing permanently. From the central and north Europe, four new species have been described during last 30 years, which is not enough (Baranowski 1985; Büche 2001; Büche & Lundberg 2002, Zahradník 1993). Now there are 12 species from three subgenera (Zahradník 2007) of the genus Dorcatoma Herbst, 1792 known in central Europe. From the Middle East only two species - D. (Dorcatoma) farbiaki Zahradník, 1998 and D. (Pilosodorcatoma) setosella Mulsant et Rey, 1864 (Zahradník 1998, 2007) are known. The genus Stagetus Wollaston, 1861 is widely distributed in the Palaearctic Region, a few species are known from the Afrotropical Region and the genus is also sporadically represented in the Oriental or Neotropical Regions (Español 1967a, 1972, 1974, 1983; Pic 1904, 1912, 1920, 1926, 1944, 1950, 1952, 1956; Toskina 1993, 2000; White 1975, 1982; Zahradník 2007). Overall 82 species and subspecies are known. Key of almost all Palaearctic taxons from genus Stagetus Wollaston, 1861 was given by Toskina (2015a), not including some newly described species (for example Zahradník 2012, 2015c). Genus Xyletinus Latreille, 1809 has centre of its distribution in the Holarctic Region (Toskina 2006; White 1982; Zahradník 2007), includes 6 subgenera, the largest is subgenus Xyletinus. Species from this genus known from other regions (Afrotropical, Oriental, Neotropical and Australian) are not numerous or probably can belong to other genera (may be also new ones). The nominotypical subgenus contains more than 70 species and subspecies (Toskina 2006, 2007, 2009; Zahradník 2007, 2015b). Almost complete key to 233 Palaearctic species of the subgenus Xyletinus (Latreille, 1809) has been given by Toskina (2006, 2015b), also without newly described species (Zahradník 2015b). The genus Megorama Fall, 1905 contains 18 species - 3 from Palaearctic Region - Japan, Bhutan (and adjacent part of Oriental Region), and Canary Is., 1 from Oriental Region (Vietnam); 9 from Afrotropical Region, especially from Eastern Africa, partly also from Western and Central Africa, and 5 from North and Central America. MATERIAL AND METHODS I have studied all original description and specimens of all European and Middle East species of the genus Dorcatoma Herbst, 1792 (Baranowski 1985; Büche 2001; Büche & Lundberg 2002; Fabricius 1792; Herbst 1792; Hummel 1829; Mulsant & Rey 1864; Reitter 1903; Sturm 1837; Zahradník 1993, 1996, 1998) and description of two subgenera Pilosodorcatoma and Sternitodorcatoma (Borowski 1999). Depicts of aedeagus and antennae from all species from this region are available. I have studied all species from this area “in natura”. I have also studied an original description of Stagetus Wollaston, 1861 living in Middle East (Aubé 1861; Brenske & Reitter, 1884; Chevrolat 1859; Español 1969a, b, 1981; Mulsant & Rey, 1861; Pic 1899; 1921, 1932; Reitter 1884, 1889; Schilsky 1899; Toskina 1998, 2012; Zahradník 1997). For identification I used keys published by Toskina (2015a) and pictures of aedeagus published in the above mentioned publications. I have studied bigger part of species from this area “in natura” except S. arabicus Español, 1981, S. fabiani Toskina, 2012, S. ferrugineus Español, 1969, S. montanus Toskina, 1998, S. striatulus (Schilsky, 1899) and S. xyletinus Reitter, 1889. For identification and description of species from genus Xyletinus (s. str.) I used keys published by Gottwald (1977) and Toskina (2006, 2015b). If necessary I have studied the genital stirrup of similar species. I have studied all original description of Palaearctic, Oriental and Afrotropical species from the genus Megorama Fall, 1905 (Español 1967b, 1976, 1978; Español & Viñolas 1996; Israelson 1974; Pic 1923; Sakai 1975). Only Megorama rufescens (Pic, 1922) from Cameroon, Gaboon, Ivory Coast and Zaire and M. robustum (Pic, 1943) from Madagascar does not have illustrated aedeagus and antennae. Exact label data are cited for all type material; semicolon (;) divides the data in different lines on one label and slash (/) divides the data on different labels. The new species are equipped with a red, printed label showing the following text: “HOLOTYPE”; on the second white, printed label, there is the following text: “species name sp. n., P. Zahradník det. I use the following abbreviation in the paper for collection where the type material is deposited: HNHM Hungarian Natural History Museum, Budapest, Hungary; PZPC collection of Petr Zahradník, Jesenice u Prahy, Czech Republic. 234 RESULTS Dorcatominae C. G. Thomson, 1859 Dorcatomini C. G. Thomson, 1859 Dorcatoma (Oculidorcatoma) subg. nov. Type species. Dorcatoma (Oculodorcatoma) hungarica sp. nov. Description. General shape resembling Dorcatoma (Pilosodorcatoma). Pubescence erect. Antennae consist of 10 antennomeres with enlarged the last three antennomeres. Eyes with distinct sparse short erect hairs. Male genitalia with similar morphology as other subgenera of Dorcatoma Herbst, 1792. Differential diagnosis. This new subgenus differs from all other subgenera by the presence of short erect sparse hairs on eyes. Identically with Sternitodorcatoma it has only nine antennomeres, but its abdominal sternites are not grown together and are free as in Pilosodorcatoma or Dorcatoma, which has ten antennomeres. Differences are mentioned in following key: 1 Antennae with 9 antennomeres ............................................................................................................................ 2 - Antennae with 10 antennomeres ......................................................................................................................... 3 2 Eyes without hairs, abdominal sternites 2-4 grown together at middle ....... Sternitodorcatoma Borowski, 1999 - Eyes with short erect hairs, abdominal sternites 2-4 free .......................................... Oculidorcatoma subg. nov. 3 Setation of elytra more or less erect, smaller species ...................................... Pilosodorcatoma Borowski, 1999 - Setation of elytra more or less recumbent, larger species ............................................. Dorcatoma Herbst, 1792 Name derivation. Derived from the Latin name “oculus” (means “eye”) and “Dorcatoma” - generic name. Oculus is important because there are sparse short erect hairs on eyes, which does not have any other subgenera. Dorcatoma (Oculidorcatoma) hungarica sp. nov. (Figs. 1a-c) Type material. Holotype (♂): “HUNG., Pest m., Márianosztra; Nagy-vadálió, tölgykorhadékból; nevele, 2009 XI- 2010 III; leg. Németh Tamász”, (HNHM). Description. Male (holotype). Shortly oval, convex, body length 2.0 mm, greatest width 1.25 mm (Fig. 1a). Ratio length:width of elytra 1.15. Piceous black, head and pronotum brown (head lighter), pubescence yellowish-white, short, dense, semierect or erect. Antennae, palpi and legs rusty yellow. Head evenly convex, shining, finely and sparsely punctuate, diameter of puncture at least 3 times larger than distance between punctures. Eyes small, rounded, convex, with small emargination for inserting antennae and moderately keel inclined from middle of eye askew backwards to pronotum, with sparse short erect hairs. Front 2.4 times wider than 235 Fig. 1: Dorcatoma (Oculidorcatoma) hungarica sp. nov.: 1a- general habitus; 1b- antennae; 1c- aedeagus. width of eye in dorsal view. Antennae consist of nine antennomeres (Fig. 1b). The first robust, the widest on their base, anteriorly sharped with longitudinal keel. The second twice shorter than the first, narrower. The third to the sixth very short, together of the same length as the seventh. The third as long as wide, the fourth slightly transverse, on the inner margin sharpened. The fifth and the sixth same, shortly longer than wide. The seventh and the eighth serrate; the seventh as long as wide, the eighth 1.2 times longer than wide, slightly narrow than previous. The last antennomere longly oval, twice longer than wide, as wide as eighth. The last segment of maxillary palpi twice longer than wide, clubbed. Pronotum transverse, ratio length:width 0.45, the widest at the base. Surface shining, with sparse and fine punctation, distance between punctures 1-2 times larger than their diameter. Lateral margin from dorsal view invisible. Posterior angles sharp, base of pronotum twice bent. Pubescence slightly inclined forward. Scutellum small, slightly transverse. Elytra shortly oval, with distinct shoulders, shining, densely and
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