Winklerites stevanovici, Hlaváč & Magrini, 2016

Hlaváč, Peter & Magrini, Paolo, 2016, New species of Winklerites from eastern Serbia (Coleoptera: Carabidae: Trechinae), Acta Entomologica Musei Nationalis Pragae 56 (1), pp. 71-78 : 73-76

Winklerites stevanovici sp. nov.

( Figs 1–8 )

Type locality. Serbia, Pirot Disctrict, Dimitrovgrad-Petrlaš, Džemanska Abyss.

Type material. HOLOTYPE: J, ‘ Srbija [p], Dimitrovgrad , Petrlaš, “Džemanska prop[ast] ”, 02.05.2002 [h], M. Stevanović leg. [p]’ ( NMPC) . PARATYPES: 4 JJ 1 ♀, same data as holotype ( CPHP, CPMF).

Description. Body ( Fig. 1 ) long and narrow, length 2.02–2.21 mm, depigmented, uniformly yellow-testaceous, shiny, head, pronotum and anterior part of elytra with isodiametric mesh, shagreened, covered with sparse and short pubescence. Head robust, about as long as wide, narrower than pronotum, ratio: HMW/PMW 0.66–0.70, eyes completely atrophied, frontal furrow short, shallow, as long as half of length of head. Antennae shorter, moniliform, when oriented backwards reaching basal 1/5 of elytral length and reaching level of pore 3 of umbilicate series, scape and pedicel subequal in length, about 1.25 times as long as antennomere III, antennomeres III–X subequal in length, VI–X slightly wider than III–V, terminal antennomere about 1.30 times as long as X. Pronotum slightly transverse (PMW/PL 1.13–1.18), with maximum width before anterior 1/3, not denticulate before posterior angles, pronotal midline shallow, weakly defined. Anterior angles slightly rounded, weakly prominent; posterior ones sharp, prominent, pointed. Disc weakly convex, with short and sparse pubescence. Elytra ( Fig. 6 ) elongate and subparallel, ratio: EL/EW 1.41–1.50, with maximum width behind middle, clearly wider than pronotum, ratio: EW/PMW 1.25–1.33, lacking shallow basal depression, disc poorly convex, humeri broadly rounded. Chaetotaxy ( Figs 1 , 6 ): supraorbital setae very distant, about 2/3 of head width, basal umbilicate pore big, foveate. Umbilicate series of type B, i.e. with pores 5–9; distance between pores 1–2 and 2–3 subequal, pore IV much farther, placed slightly above level of anterior third of elytral length at level of anterior discal seta; pore 5 placed somewhat below posterior third of elytral length, pores 4–5 very distant, 1.60 times more distant than pores 3–4; pores 5, 6 and 7 almost equidistant from each other; pores 7, 8 and 9 not equidistant from each other, with distance between pores 7 and 8 about 1.50 times the distance between pores 8 and 9. Two discal pores: pore 1 placed slightly ahead of level of umbilicate pore 4, discal pore 2 located slightly above level of umbilicate pore 7. Urite IX ( Fig. 5 ) ovate, 1.35 times as long as wide, sharply rounded in apical part and very enlarged in basal part. Aedeagus ( Figs 2–3 ) relatively large, longly arcuate; evenly extended to apical part, with short triangular apex, with well defined pre-apical ventral gibbosity, apex rounded and right oriented in ventral view, copulatory piece minuscule, not hooked. Parameres ( Fig. 4 ) unequal, shortly elongated, provided with two apical setae each. Stylomeres ( Fig. 7 ) strongly curved, pointed at apex, strongly chitinized, each gonocoxite I with macrosetae on inner side and single seta on opposite side.

Measurements. See Appendix.

Sexual dimorphism. First two protarsomeres dilated in males as in other Winklerites , otherwise not apparent.

Differential diagnosis. Winklerites stevanovici sp. nov. belongs to the W. hercegovinensis species group which is characterized by having the median lobe of aedeagus longly curved in lateral view, apical part wider than basal part, apex pointed, copulatory piece minute, strongly chitinized, and by the presence of a distinct excision on the posterior lateral margin of elytron. It differs readily from W. durmitorensis Nonveiller & Pavićević, 1987 , W. kuciniensis Nonveiller & Pavićević, 1987 and W. fodori Guéorguiev, 2007 in the shape of the median lobe which is not hooked. Winklerites gueorguievi Giachino & Vailati, 2012 and W. serbicus Čurćić et al., 2013 have similar, un-hooked shape of copulatory piece. Winklerites stevanovici sp. nov. differs from W. gueorguievi in simple widely rounded apex of the median lobe in dorsal or ventral view while W. gueorguievi has the apex with two wide lobes. The new species is most similar to W. serbicus , for their differentiation see Table 2.

Etymology. Patronymic, named after our friend Miroslav Stevanović (Niš, Serbia) who collected the type material of the new species.

Biology. All specimens were collected under deeply buried stones on the right side of the entrance of the Džemanska propast abyss. This part of the cave was still with some light.

Distribution. The species is so far known only from the type locality in eastern Serbia ( Fig. 8 ).

Figures

Figs 1–3. Winklerites stevanovici sp. nov. 1 – habitus of J paratype (CPMF); 2–3 – aedagus (J paratype, CPMF). (2 – in lateral view, 3 – in ventral view).

Figs 4–7. Winklerites stevanovici sp. nov. 4–6 – J paratype, CPMF (4 – parameres, 5 – urite IX, 6 – elytra). 7 – ♀ paratype, CPHP: stylomeres (gonocoxites I and II of ovipositor).

Fig. 8. Distribution map of the Winklerites hercegovinensis species-group: D – W. durmitorensis Nonveiller & Pavićević, 1987; F – W.fodori Guéorguiev, 2007; G – W.gueorguievi Giachino & Vailati, 2012; H – W.hercegovinensis (Winkler, 1925); K – W. kuciniensis Nonveiller & Pavićević, 1987; P – W. paganettii (Müller, 1925); S – W.serbicus Čurćić et al., 2013; ST – W. stevanovici sp. nov.