Docosia muranica, Kurina, Olavi & Ševčík, Jan, 2011

Kurina, Olavi & Ševčík, Jan, 2011, Three new species of Docosia Winnertz from central and southern Europe (Diptera: Mycetophilidae), Zootaxa 2810, pp. 26-36 : 27-30

Docosia muranica sp. nov.

Figures 1 c, 1d, 2a–2f, 4a, 4c, 4e.

Type material. Holotype. 3, SLOVAKIA, Muránska planina NP, Muránska Huta, near Bobačka NNM, sweeping along a brook, 48°46’54,2”N 0 20°6’19,6”E, 910 m. a.s.l., 1.v.2010 (J. Ševčík leg.) [ SMOC, in glycerol]. Paratypes. 2 33 1 Ƥ, as for holotype (13 in SMOC, in alcohol; 1 3 and 1Ƥ in IZBE, mounted from alcohol); 1 3, SLOVA- KIA, Muránska planina NP, Paseky, Šarkanica NNR, sweeping along a brook, 48°42’44,7”N 0 19°59’28,8”E, 520 m. a.s.l., 30.iv.2010 (J. Ševčík leg.) [ HNHM, in alcohol]; 1 3, SLOVAKIA, Muránska planina NP, Šiance NNR, sweeping along forest edge, 48°46’39,4”N, 0 20°6’31,1”E, 760 m. a.s.l., 1.v.2010 (J. Ševčík leg.) [ JSOC, in alcohol]; 1 3, SLOVAKIA, Muránska planina NP, Mokrá Polana NR, sweeping along a brook, 48°47’5,4”N 0 20°6’39,8”E, 910 m. a.s.l., 2.v.2010 (J. Ševčík leg.) [ JSOC, in alcohol]; 13, GREECE, Central Macedonia, Kerkini lakes area, village Vironia, Ramna site, 41°17’42,5”N 0 23°11’33,1’’E, 750 m. a.s.l., Malaise trap, 24–30.iii.2008 (G. Ramel leg.) [ IZBE, mounted from alcohol].

Description. Male ( Fig. 1 c). Body length 3.25–3.95, 3.72 [3.95] mm (n=5).

Head blackish brown with numerous pale setae. Three ocelli, with laterals separated from eye margins by a distance similar their own diameter. Clypeus blackish, with setae pale. Mouthparts light brownish. Palpus with first three segments brownish, fourth segment pale yellow and fifth segment pale yellow but brownish in apical third. Scape and pedicel dark brown, all flagellomeres brown. Flagellum with short pale setae. Flagellomeres cylindrical, median flagellomeres about three times as long as broad, apical flagellomere slightly conical, three times as long as broad.

All parts of thorax black. All bristles and setae yellowish white. Scutellum with numerous setae, including marginal bristles; latter not arranged in distinct pairs. Antepronotum and proepisternum with bristles and setae. Upper part of antepronotum with two strong bristles crossing the neck, lower part of antepronotum with two additional strong bristles. Laterotergite and other pleural parts bare. Halteres pale yellow.

Legs. All coxae dark brown at basal two third and yellow at apical third. Femora yellow with first femur brown from underneath and hind femur brown at apical fifth and from underneath of basal fourth. All trochanters brown. Tibiae and basitarsi yellow, successive tarsal segments seem brownish because of numerous dark setae. Mid tibia with 4–5 a, 2–3 d, 2–3 av and 2– 6 p. Hind tibia with 9–13 a, 4–5 d, 1–2 av and 4– 6 p. Ratio of femur to tibia for fore, mid and hind legs: 1.37–1.59, 1.44 [1.37]; 1.04–1.20, 1.13 [1.04]; 0.80–0.84, 0.82 [0.82]. Ratio of tibia to basitarsus for fore, mid and hind legs: 1.17–1.46, 1.32 [1.35]; 1.41–1.54, 1.48 [1.41]; 1.79–1.88, 1.83 [1.79].

Wing hyaline, length 3.55–3.85, 3.67 [3.85] mm (n=5). Wing tip below R5 slightly darkened. Radial veins and r-m brown, other veins paler while m-stem is faint. Sc, R4, bM-Cu, m-stem, basal two third of cu-stem and basal third of A1 asetose; C, R1, R5 and r-m setose on both surface; M1, M2, apical third of cu-stem, CuA1, CuA2 and apical two third of A1 setose on dorsal surface. Costa reaches 0.36–0.44, 0.41 [0.38] from R5 to M1. Sc ends distinctly in R, at the level of beginning of m-stem. Anterior fork begins a little before at the level of R4. Posterior fork begins before anterior fork at level of middle of r-m. R1 2.0–2.44, 2.18 [2.20] times as long as r-m, which is 1.14–1.43, 1.26 [1.25] times as long as m-stem.

Abdomen brown with first three segments lighter. Terminalia ( Fig. 2 ) dark brown except lighter gonostyli. Tergite 9 trapezoid. Gonocoxite with row of blackish spinules along ventroapical margin. Gonostylus with two lobes: ventral lobe with apical spine; dorsal lobe didymous with subapical spine on the blunt ventral part while the dorsal part is tapering and slightly curved apically. Cercus with 10 combs of retinacula.

Female ( Fig. 1 d). Body length 4.68 mm (n=1). Coloured as male. Length of wing 4.28 mm (n=1). R1 two times as long as r-m, which is 1.33 times as long as m-stem. Costa reaches 0.43 from R5 to M1. Ratio of femur to tibia for fore, mid and hind legs: 1.09, 1.0, and 0.99. Ratio of tibia to basitarsus for fore, mid and hind legs: 1.25, 1.43 and 1.79. Abdomen entirely brown. Terminalia as in figure 4 a, c, e.

Biology. Unknown.

Etymology. The species name is an adjective based on the type locality in the Muránska Planina National Park of central Slovakia.

Discussion. Following the key by Laštovka & Ševčík (2006), this species runs to couplet 15 because of bare laterotergite and coxa dark on basal half. The structure of male terminalia is, however, different from that in the three species included in this couplet, viz. D. nigra Landrock, 1928 , D. diutina Plassmann, 1996 and D. pannonica Laštovka & Ševčík, 2006 . The outline of the gonostylus and the ventroapical margin of the gonocoxites somewhat resembles that in D. carbonaria Edwards, 1941 and especially D. enos Chandler, Bechev & Caspers, 2006 . All three species have the ventroapical margin of the gonocoxites without processes or incisions, and with irregularly arranged blackish spinules, which are not forming distinct combs. In D. muranica the dorsal lobe of gonostylus is divided into two parts, analogous to D. enos , but the dorsal part ( Fig. 2 c: gst dl II) is broad and without being apically elongated (cf. Chandler, Bechev & Caspers 2006: Fig. 33). D. muranica and D. enos are most probably sister taxa but phylogenetic study of whole genus is needed for a proper context. The outline of the ninth tergite is different from any species known in Europe.

Figures

FIGURE 1. Habitus photos of new Docosia species. a, b, Docosia rameli sp. nov. (a = male, b = female); c, d, Docosia muranica sp. nov. (c = male, terminalia detached, d = female, terminalia detached); e, Docosia kerkini sp. nov. (male, terminalia detached). Scale bar = 1 mm.

FIGURE 2. Docosia muranica sp. nov., male terminalia. a, lateral view; b, posterior view; c, ventral view of gonostylus; d, dorsal view of tergite IX; e, dorsal view of cerci; f, ventral view of aedeagal complex. Scale bar = 0.1 mm. Abbreviations: aed = aedeagus; gc = gonocoxite; gc vam = ventroapical margin of gonocoxite; gst vl = ventral lobe of gonostylus; gst dl I = ventral part of dorsal lobe of gonostylus; gst dl II = dorsal part of dorsal lobe of gonostylus; par = paramere; ret = combs of retinacula.