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Coleoptera: Carabidae: Pterostichini) from Greece

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Coleoptera: Carabidae: Pterostichini) from Greece Biologia 65/6: 1040—1048, 2010 Section Zoology DOI: 10.2478/s11756-010-0121-8 A new species of Pseudomaseus (Coleoptera: Carabidae: Pterostichini) from Greece Borislav Guéorguiev1 &VladimirSkoupý2 1National Museum of Natural History Sofia, 1 Blvd. Tzar Osvoboditel, 1000 Sofia, Bulgaria; e-mail: [email protected] 2Žilina, Spojovací 149,CZ-27 01 Kamenné Žehrovice, Czech Republic; e-mail: [email protected] Abstract: A new species of carabid beetles, Pterostichus hejkali sp. n. is described from Northwest Greece (type locality: Epirus District, Ioannina Prefecture, Ioannina Lake environs). Diagnostic characters include distinctive shape of the median lobe of aedeagus, of right paramere and of sexual modification on last visible sternum in males as well as shape of pronotum and size of body. Members of the new species are most similar to P. minor. A key to the identification of the Balkan taxa of Pseudomaseus is presented. Key words: Coleoptera; Carabidae; Pterostichus; new species; Greece. Introduction to describe a new species of Pseudomaseus and point out the structural differences between it and related At present, the subgenus Pseudomaseus Chaudoir, 1838 species. (genus Pterostichus Bonelli, 1810) includes 21 species; two of them live in the Nearctic, and the other nine- teen species in the Palaearctic (Bousquet & Pilon 1983; Material and methods Solodovnikov 2001; Lorenz 2005; Angus et al. 2009); Pterostichus tsukubasanus Kasahara, 1988 also belongs Thirty three specimens of six species (P. anthracinus, P. to Pseudomaseus (Seiji Morita, pers. commun.), not to gracilis, P. hejkali, P. minor, P. nigrita, P. oenotrius)from Melanius Bonelli, 1810 as was given by Bousquet (2003: the Czech Republic, Italy, Slovenia, Bulgaria, Greece, and Turkey were examined. Male specimens were boiled in wa- 499) and Lorenz (2005: 273). The Nearctic species ter and their aedeagi were extracted and put in 10% KOH were reviewed by Bousquet (Bousquet & Pilon 1983; to become lighter. The genital figures were made based on Bousquet 1999) and this author also investigated seven preparations embedded in glycerine with the aid of a draw- Palaearctic species in ordertomakecompletecharac- ing tube mounted on a Zeiss transmitted-light microscope. teristics of the subgenus. However, such study is lacking After that, the aedeagus and parameres were embedded in in the Palaearctic Region. In 2001, Solodovnikov (2001) Euparal either on the same board with specimen from which proposed a key for the majority of known Palaearctic they were extracted or on a separate transparent label (three species and described three new taxa from the East- males of new species) beneath the specimen from which they ern Palaearctic, but recently two of them were syn- were removed. The measurements and other drawings were onymyzed (Angus et al. 2009). made with the aid of an Olympus SZX10 stereobinocular. Measurements: body length from apex of longer mandible The last catalogue of the Palaearctic Carabidae in- to elytral apex (BL); body width as maximum distance dicates four species of Pseudomaseus from the Balkan across body, namely the maximum distance across the elytra Peninsula (Bousquet 2003) – Pterostichus anthracinus (BW); maximum transverse distance across head, including (Illiger, 1798) with ssp. anthracinus and ssp. biimpres- eyes (HW); maximum width of pronotum (PW); length of sus (K¨uster, 1853), P. gracilis (Dejean, 1828) with ssp. pronotum, measured from apical margin to basal margin gracilis, P. minor (Gyllenhal, 1827) with ssp. minor and along midline (PL); maximum width of elytra (EW); length ssp. turcicus (Brandmayr & Drioli, 1978), and P. nigrita of elytra, from basal edge to apex of longer elytron (EL). (Paykull, 1790). In fact, P. oenotrius Ravizza, 1975 Internal side of paramere marks this side of paramere which has also to be included in this list as it was recorded directly fastens the distal part of the median lobe of aedea- gus; conversely the external side of paramere is opposite to from Slovenia, Croatia, and Bosnia Herzegovina (Rav- internal side. Values for sizes and ratios among specimens izza 1975: 95; Brandmayr & Drioli 1978: 106), and we of the new species are shown in Table 1. do not know any subsequent source to disregard these The studied material could be found in the following records. In 2009, we studied various Pterostichini from collections: NMNHS – National Museum of Natural History, Greece and found a series, which did not conform with Sofia, Bulgaria; NMPC – National Museum, Prague, Czech any of the known species. The purpose of this paper is Republic; cRK – private collection Rudolf Kmeco; cRL – c 2010 Institute of Zoology, Slovak Academy of Sciences A new species of Pseudomaseus 1041 Table 1. Data for measurements and ratios among type specimens of Pterostichus hejkali. Specimen BL BW PW/HW PW/PL EW/PW EL/PL EL/EW Holotype 8.9 mm 3.0 mm 1.41 1.24 1.20 2.42 1.63 Paratype 1 8.7 mm 2.9 mm 1.39 1.26 1.21 2.58 1.70 Paratype 2 9.3 mm 3.0 mm 1.33 1.21 1.22 2.45 1.65 Paratypes ¾ 1 8.9 mm 3.0 mm 1.34 1.26 1.23 2.55 1.65 Paratypes ¾ 2 8.6 mm 2.8 mm 1.32 1.21 1.22 2.52 1.71 Paratypes ¾ 3 8.8 mm 3.0 mm 1.34 1.26 1.23 2.58 1.67 Paratypes ¾ 4 8.8 mm 3.0 mm 1.38 1.25 1.20 2.47 1.65 Average 8.86 mm 2.96 mm 1.36 1.24 1.22 2.51 1.67 Figs 1–6. Pronotum, dorsal view: Pterostichus (Pseudomaseus) hejkali, female paratype (1); P.(Pseudomaseus) minor minor,Czech Republic, Dyje River, female (2). Last abdominal sternum of males, ventral and lateral view: Pterostichus (Pseudomaseus) hejkali, paratype (3, 4); P.(Pseudomaseus) minor minor, Bulgaria, Pancharevo Reservoir (5, 6). Scales 1 mm. private collection Roman Lohaj; cVS – private collection Head as long as wide, dorsal surface with dou- Vladimir Skoupý. ble punctuation (a very fine punctuation spread al- most throughout dorsum and a coarser punctuation over and behind posterior supraorbital setiferous punc- Pterostichus (Pseudomaseus) hejkali sp. n. tures); frontal furrows well impressed, arched, diver- (Table 1, Figs 1, 3, 4, 7–9, 15–17, 23–25, 31–33) gent posteriorly. Eyes relatively big, prominent, hemi- spherical; temporal slopes laterally as long as or longer Description. An elongate, convex and shiny Pseudo- of 1/3 length of eyes. Labrum subrectangular, with maseus-species with length of body from 8.6 to 9.3 mm 3+3 marginal setiferous punctures anteriorly. Clypeus (average 8.86 mm), maximal width from 2.8 to 3.0 mm subtrapezium-shaped, hardly concave anteriorly, con- (average 2.96 mm), black coloured torso, black to dark vex posteriorly, posterior margin ± reduced. Antennae brown appendages (palpomeres, tibiae, and tarsomeres relatively long, pubescent from proximal part of arti- dark brown to red-brown), and without microsculpture cle 4, terminal two articles reaching base of pronotum. of tegument (present only on labrum). Mentum tooth bifid. Gula smooth; ventral lobes of head 1042 B. Guéorguiev &V.Skoupý Figs 7–14. Median lobe of aedeagus, left lateral view: Pterostichus (Pseudomaseus) hejkali, holotype (7); Pterostichus (Pseudomaseus) hejkali, paratype (8); P.(Pseudomaseus) hejkali, paratype (9); P.(Pseudomaseus) minor minor, Czech Republic, Dyje River (10); P. (Pseudomaseus) minor minor, Bulgaria, Pancharevo Reservoir (11); P.(Pseudomaseus) minor turcicus, Turkey, Salmanka¸s Pass (12); P.(Pseudomaseus) minor ssp., Greece, Prespa Lake (13); P.(Pseudomaseus) oenotrius, Italy, Lago di Doberdo Lake (14). Scale 0.5 mm. (outside gular suturae) with several transversal wrin- stria 3 in anterior 1/3 elytron, second one on stria 2 kles and punctures. just after middle of elytron, and last one on stria 2 Pronotum subcordate (Fig. 1), widest in middle. in posterior 1/4 elytron); intervals flat, hardly convex. Disc convex, smooth (except basal part); midline fine, Ratio EW/PW 1.20–1.23 (average 1.22); ratio EL/PL almost reaching both anterior and posterior margin. 2.42–2.58 (average 2.51); ratio EL/EW 1.63–1.70 (av- Basal part punctured, with two impressions from each erage 1.67). Wings fully developed in most specimens; side of midline, punctuation spread on and in area be- only one possesses wings shorter than length of elytra. tween impressions (outside limited from convex fold), Proepisternae, frontal parts of mesoepisternae, and central 1/8–1/9 of pronotum smooth, impunctate. Lat- lateral parts of metathorax coarsely punctured, epipleu- eral margin of pronotum convex forward, backward sub- rae, central parts of prothorax and metathorax smooth, sequently convex, straight and hardly concave before other parts of thorax (including metaepisternae) finely posterior angles; lateral border fine, equal in width from punctured. Abdominal sterna with ± distinct longitudi- end to end; anterior margin slightly concave; posterior nal wrinkles in base and laterally (first sternum entirely margin straight in middle, oblique towards obtuse pos- wrinkled). Last visible sternum in males marginally terior angles. Ratio PW/HW 1.32–1.41 (average 1.36); with 2 setiferous punctures, medially with quite ele- ratio PW/PL 1.21–1.26 (average 1.24) (Table 1). vated, wide and massive longitudinal keel, prolonged Elytra subparallel, convex dorsally, widest just af- medially on apical 2/3 to 3/4 of length of sternum ter middle; shoulders round, with small denticles (vis- and terminally clearly bent to left (Figs 3, 4); last ible at dorsal-apical view). Lateral margin more con- visible sternum in females entirely smooth medially, stricted in apical fifth, slightly concave just before apex. marginally with 4 setiferous punctures. Legs relatively Basal margin slightly wider than basal margin of prono- long and slender. tum, basal border wide; elytral striae fine, impunctate, Median lobe of aedeagus in lateral view (Figs 7–9, each elytron with 3 setiferous punctures (first one on 15–17) bent in middle, basal part (basal bulb + medial A new species of Pseudomaseus 1043 Figs 15–22.
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