Rybinskiella magnifica
Creators: name: Wang, Cheng-Bin
name: Zhou, Hong-Zhang
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Rybinskiella
Rybinskiella magnifica

description: Rybinskiella (s. str.) magnifica (Rybiński, 1902)
(Figs. 2C, D; 3M–R; 4C; 5C; 6G–I; 7C; 8C; 9C; 15A–K; 16A–C; 17A–F)
Rybiński, 1902a: 11 (Choleva; type locality: Ost-Karpaten [Czarna Hora]); Rybiński, 1902b: 5 (Choleva; complementary description); Roubal, 1926: 5 (Rybinskiella (s. str.) daurica; incorrect determination; distribution); Reitter, 1913: 667 (Rybinskiella; combination change; complementary description); Csiki, 1951: 131 (Rybinskiella; distribution); Frank, 1988: 263 (Rybinskiella; complementary description; distribution); Růžička, 1994: 7 (Rybinskiella; complementary description; distribution); Perreau, 2000: 146 (Rybinskiella (s. str.); in catalog); Perreau, 2004: 141 (Rybinskiella (s. str.); in catalog; distribution); Perreau, 2015: 192 (Rybinskiella (s. str.); in catalog; distribution).
Material examined. UKRAINE: 1♂, 1♀, Zakarpatska obl., Rahiv distr., Karpatsky biosferny zapovidnik [Reserve], Chornohora mts, Jan Růžička leg. / Hoverlyanka mt., 1850–1900 m, 6.vi.–28.viii.1999, rock debris on S slope (azimuth 230°), 48°09.3'N 024°30.2'E (GPS, precision ± 50 m) / pitfall trap No. 7 (baited with fish meat and cheese) with propylene glycol, outlet 10 cm / Rybinskiella (Rybinskiella) magnifica (Rybiński, 1902); Jan Růžička det. 1999 (ISEA).
Redescription. Male. EBL: 5.59 mm. Length of different body parts: HL: AL: PL: ELL = 0.89: 2.59: 1.23: 3.14 mm; width: HW: EW: PW: ELW = 1.02: 0.07: 1.75: 2.50 mm. Proportion of antennomeres from base to tip in µm (length × width): 224 × 116, 215 × 93, 272 × 105, 233 × 98, 214 × 97, 193 × 105, 182 × 134, 146 × 108, 165 × 139, 162 × 148, 273 × 142.
Habitus (Fig. 2C) elongate, not much convex and sublustrous; well pigmented: mostly brown; mouthparts, apical half of ultimate antennomere, and apical part of tarsi a little paler. Dorsum continually clothed with short, recumbent and sallow pubescence.
Head only slightly wider than long, HW/HL = 1.14. Surface covered with large and coarse punctures, separated about 1.0–2.0 times of their diameter, interspaces microreticulate. Clypeofrontal suture absent. Clypeus with substraight anterior margin. Compound eye built from ca. 57–62 ommatidia, EW/HW = 0.07. Antennae (Fig. 15A) long and slender, AL/HW = 2.55; all antennomeres longer than wide; length of 3rd/2nd = 1.26; 11th elongate pear-shape. Cervical sclerite with length/width = 1.80 in medial view (Fig. 4C).
Pronotum (Fig. 15B) transverse, widest around middle, PW/PL = 1.43. Sides regularly narrowed forward from widest and gently constricted before hind corners. Hind corners rounded, slightly protruding backward. Posterior margin slightly bisinuate, slightly emarginate behind hind corners. Surface covered with fine punctures, interspaces smooth, with shallow depression in each latero-basal area.
Elytra oval, incompletely fused with each other, widest at about basal 2/5, ELL/EW = 1.26. Sides regularly curved, evenly narrowing from widest to apex; apices (Fig. 15G) narrowly rounded. Sutural striae present. Surface covered with fine punctures, interspace smooth. Metathoracic wings absent.
Prolegs slender, with basal three protarsomeres (Fig. 15C) faintly expanded: TW/BTW = 1.30. Protibiae (Fig.
15E) almost simply and gradually expanded towards apex, without visible outer spines. Profemora without tubercle on inner side. Mesotibiae with inner margin slightly sinuate, 1 st mesotarsomere (Fig. 7C) moderately expanded. Metatibiae straight.
Abdominal ventrite VIII (Fig. 15I) with middle indentation at anterior edge, and narrowly emarginate at middle of posterior edge. Genital segment (Fig. 15J) with slender spiculum gastrale, and never expanded dorsoventrally (Fig. 15K); tergite IX rounded ventro-apically.
Aedeagus (Fig. 16A, B) with median lobe large and wide (length/width = 5.25), slightly undulate and subequal above base, apex much wide and gently emarginate in dorsal view; parameres filiform, reached about apical 2/5 of median lobe, each with two apical setae; basal lama short; ventral operculum with two wide lobes, each acuminated to a sharp apex. In lateral view, median lobe fairly bent ventrad, gradually tapering towards a dorsally upturned apex (Fig. 16C). Internal sac (Fig. 16A–C) with a huge fan-like tooth at apex, a pair of spine clusters in middle region, and abundant toothlets in basal region.
Female. Somewhat chubbier and duller than male in general appearance (Fig. 2D), and also can be distinguished from following characteristics: pro- & mesotarsi simply linear (Fig. 15D); protibiae (Fig. 15F) simply slender, furnished outer spines; elytral apices (Fig. 15H) more acuminated, sutural angles weakly protruded; ventrite VII (Fig. 17A) slightly emarginate at posterior edge; tergite VIII (Fig. 17B) truncate in middle of posterior edge, desclerotized medioapically and laterally; ventrite VIII (Fig. 17C) regularly rounded at posterior edge, spiculum ventrale rather wide; tergite IX (Fig. 17D) rounded at posterior edge, with numerous setae posteriorly; ventral sclerite (Fig. 17F) broad and shovel-like, regularly rounded at posterior edge, without sensillae; valvifer (Fig. 17D, E) with 1 lateral seta; coxite (Fig. 17D, E) with 3 subapical, 1 lateral and 1 basolateral setae and some much finer surface setae (some setae missing in the examined specimen; more details see Fig. 20 in Růžička, 1994); stylus minute (Fig. 17D, E), cylindrical, with 1 long seta.
Distribution. Poland, Romania, Ukraine.
description: Published as part of Wang, Cheng-Bin & Zhou, Hong-Zhang, 2016, Sinocatops gen. nov., an apterous genus of Cholevini (Coleoptera: Leiodidae: Cholevinae) from China, with emphasis on differences with allied Rybinskiella Reitter, 1906, pp. 393-415 in Zootaxa 4085 (3) on pages 410-414, DOI: 10.11646/zootaxa.4085.3.4, http://zenodo.org/record/1052649