1,721,444 research outputs found
Quadraticossus fangi Wang & Ren 2007
No full textQuadraticossus fangi Wang & Ren, 2007 (Fig. 3) 2007 Quadraticossus Wang Y & Ren, p. 41. figure 1 (A–F) Remarks. This species was erected based on both complete forewings and hind wings (Wang & Ren, 2007 a). After re-examining part and counterpart of the holotype, we have reconstructed the hind wing of Q. fangi (Fig. 3). Sc and R are similar to those of Q. eumorphus: Sc parallel with R at base, fused with R at point of origin of Rs, then confluent with R 1 + 2 for short interval, then extended to costal margin at indentation.Published as part of Wang, Ying, Wang, Lin & Ren, Dong, 2008, Revision of genera Quadraticossus, Martynovocossus and Fletcheriana (Insecta, Hemiptera) from the Middle Jurassic of China with description of a new species, pp. 56-64 in Zootaxa 1855 on page 59, DOI: 10.5281/zenodo.18352
Sticholotis taenia Wang & Ren, sp. nov.
No full textSticholotis taenia Wang & Ren sp. nov. (Figures 107–109, 275–279, 303) Diagnosis. This species is can easily be distinguished from other Sticholotis by elytra with four large yellow spots and 16 small black spots around the margins of four yellow spots (Figs 107–109), taenia-shaped apex of penis, very slender parameres and penis guide with 3 pairs of denticles at apical 1/5. Description. TL: 2.70–2.90 mm, TW: 2.31–2.67 mm, TH: 1.42–1.45 mm, TL/TW: 1.09–1.17; PL/PW: 0.40– 0.41; EL/EW: 0.89–0.97; HW/TW: 0.33; PW/TW: 0.60. Head reddish brown. Pronotum reddish brown, and scutellum dark brown. Elytron predominantly reddish brown, with two large yellow irregular discal spots resting one near base and one near apex, each elytron additionally with 8 small black spots around the margins of yellow spots as in Figs 107–109. Underside brown, elytral epipleuron and legs reddish brown. Body almost circular in outline, hemispherical, shiny and glabrous. Head frontal punctures fine and shallow, 2.0–3.5 diameters apart, with short sparse setae, interocular distance of eyes 0.63x head width (Fig. 109). Pronotal punctures very fine, 2.5–4.0 diameters apart. Elytral punctures very fine and shallow, similar to those on pronotum, 2.0–3.0 diameters apart. Elytral margins narrow, visible from above. Prosternal punctures inconspicuous, with long sparse setae. Mesoventral surface shiny, punctures inconspicuous. Metaventrite shiny, punctures inconspicuous. Elytral epipleuron broad, complete to apex, not foveate to accommodate femoral tips of hind legs. Wings well-developed. Male genitalia: Penis slender, capsule broadening basally and with a small inner process, apex taenia-shaped (Fig. 276); tegmen with penis guide longer than parameres, in lateral view straight, widest at base, gradually narrowing to apex, with a wire-like process at apical 1/4 (Fig. 277); penis guide in ventral view straight, slightly narrowed at apical 1/5, with 3 pairs of denticles, apex rounded (Fig. 278); parameres extremely thin. Female genitalia: Ovipositor elongate and narrowly triangular, styli inconspicuous, each with many long terminal setae (Fig. 279). Holotype: 1male, China, Yunnan: Dajianshan, Pingbian, [22°54.44′N, 103°41.97′E], ca 2100m, 11.x.2006 Wang XM leg (SCAU). Paratype: 1female, Pianma, Lushui, [26°0.24′N, 98°39.12′E], ca 2100m, Wang XM leg (SCAU). Distribution. China: Yunnan. Etymology. The specific epithet is formed from the Latin adjective taenia, referring to contorted penis apex.Published as part of Xingmin Wang, Hermes E. Escalona, Shunxiang Ren & Chen Xiaosheng, 2017, Taxonomic review of the ladybird genus Sticholotis from China (Coleoptera: Coccinellidae), pp. 1-72 in Zootaxa 4326 (1) on pages 41-43, DOI: 10.11646/zootaxa.4326.1.1, http://zenodo.org/record/99903
Sticholotis flammula Wang & Ren, sp. nov.
No full textSticholotis flammula Wang & Ren sp. nov. (Figures 29–31, 150–153, 296) Diagnosis. This species can be distinguished from other species of Sticholotis by relatively flat body, unique elytral color pattern and pronotum with dense short pubescence (Figs 29–31). Description. TL: 2.27 mm, TW: 2.01 mm, TH: 0.86 mm, TL/TW: 1.13; PL/PW: 0.41; EL/EW: 0.82; HW/TW: 0.34; PW/TW: 0.61. Head dark brown, with mouthparts brown. Pronotum black, anterior margin and lateral sides usually narrowly and obscurely reddish brown. Scutellum black. Elytra dark brown, with narrow reddish brown lateral margins, each elytron with a large irregular C-shaped spot, like a flame (Figs 29–31). Underside dark brown. Body almost circular in outline, hemispherical, shiny and glabrous. Head frontal punctures medium and densely distributed, 0.5–1.0 diameters apart, with short sparse setae. Eyes small and coarsely faceted, interocular distance 0.62x head width (Fig. 31). Pronotal surface shining and slightly shagreened, punctures medium and conspicuous, 0.5–1.5 diameters apart, slightly smaller than those on head, covered with short densely distributed pubescence. Elytral surface polished, punctures medium, similar to those on pronotum, 1.0–1.5 diameters apart, with two arcuate rows of large punctures on mid suture. Elytral margins very wide, visible from above. Prosternal punctures inconspicuous, with scattered long setae. Mesoventral intercoxal process transverse, anterior margin feebly emarginate, punctures large, 0.5–1.0 diameters apart. Metaventrite broad and slightly shagreened, covered by large and dense punctures distributed at center, separated by 0.5–1.0 diameters, fine and sparsely in lateral side. Elytral epipleuron broad, complete to apex, very feebly foveate to accommodate femoral tips of hind legs. Wings well-developed. Male genitalia: Penis slender, penis capsule broadening basally and with small inner process (Fig. 151); tegmen with penis guide distinctly longer than paramere, in lateral view straight (Fig. 152); penis guide in ventral view subparallel, apex rounded (Fig. 153); parameres thin and straight, with dense long setae. Female genitalia: Unknown. Holotype: 1male, China, Guizhou: Chenguan District, Wangmo, [25°9.99′N, 106°5.28′E], ca 860m, 19.vi.1986, Ren SX leg (SCAU). Paratype: 1male, same data as holotype. Distribution. China: Guizhou. Etymology. The name of this new species is formed from the Latin noun flammula, referring to elytra with flame-shaped maculae.Published as part of Xingmin Wang, Hermes E. Escalona, Shunxiang Ren & Chen Xiaosheng, 2017, Taxonomic review of the ladybird genus Sticholotis from China (Coleoptera: Coccinellidae), pp. 1-72 in Zootaxa 4326 (1) on pages 14-15, DOI: 10.11646/zootaxa.4326.1.1, http://zenodo.org/record/99903
Sticholotis dadugangensis Wang & Ren, sp. nov.
No full textSticholotis dadugangensis Wang & Ren sp. nov. (Figures 47–49, 178–182, 298) Diagnosis. This species is similar to S. formosana in dorsal color pattern, but can be distinguished from latter as follows: anterior spots on elytra touching anterior elytral margins (Fig. 47), penis very long and slender (Fig. 179), and penis guide slightly shorter than parameres (Fig. 180). In S. formosana, anterior spots on elytra do not touch anterior elytral margins (Fig. 33), penis is short (Fig. 155), and penis guide is longer than parameres (Fig. 156). Description. TL: 2.70–2.90 mm, TW: 2.51–2.67 mm, TH: 1.38–1.48 mm, TL/TW: 1.08–1.09; PL/PW: 0.43– 0.45; EL/EW: 0.83–0.89; HW/TW: 0.23; PW/TW: 0.63. Head reddish brown, mouthparts yellow. Pronotum and scutellum black. Elytra black, each elytron with 2 large yellowish spots, anterior spot very large, irregular, at middle of basal margin (touching margin), posterior small, 1/ 2 size of anterior spot, at apical third (Figs 47–49). Underside reddish brown, middle of meso- and metaventrite dark brown. Legs yellowish brown. Body almost circular in outline, hemispherical, shiny and glabrous. Head frontal punctures fine and conspicuous, 1.0–2.0 diameters apart, with scattered short setae, interocular distance of eyes 0.63x head width (Fig. 49). Pronotal punctures fine and conspicuous, 1.5–2.5 diameters apart. Elytral surface polished, punctures very fine and shallow, smaller than those on pronotum, 2.0–4.0 diameters apart. Elytral margins moderately wide, hardly visible from above. Prosternal surface mat and shagreened, punctures inconspicuous, with scattered long setae. Mesoventral surface shiny, punctures coarse and sparsely distributed with scattered short setae. Metaventrite with large and densely distributed punctures, 1.2–2.0 diameters apart. Elytral epipleuron broad, complete to apex, feebly foveate to accommodate femoral tips of hind legs. Wings well-developed. Male genitalia: Penis long and slender, strongly curved, capsule broadening basally and with a small inner process (Fig. 179); tegmen with penis guide slightly longer than paramere, in lateral view thin and straight, arcuately projected at base(Fig. 180); penis guide in ventral view parallel along 7/8 its length, then narrowing to apex (Fig. 181); parameres long and slender. Female genitalia: Ovipositor elongate and narrowly triangular, styli inconspicuous (Fig. 182). Holotype: 1male, China, Yunnan: Dadugang, Puer, [22°22.35′N, 100°56.68′E], ca 950m, 26.iv.2008, Wang XM leg (SCAU); Paratype (1): 1female, same data as holotype. Distribution. China: Yunnan. Etymology. The specific epithet is named after Dadugang, the type locality of this ladybird.Published as part of Xingmin Wang, Hermes E. Escalona, Shunxiang Ren & Chen Xiaosheng, 2017, Taxonomic review of the ladybird genus Sticholotis from China (Coleoptera: Coccinellidae), pp. 1-72 in Zootaxa 4326 (1) on page 21, DOI: 10.11646/zootaxa.4326.1.1, http://zenodo.org/record/99903
Figure 93 from: Wang X, Slipinski A, Ren S (2013) The genus Microserangium Miyatake (Coleoptera, Coccinellidae) from China. ZooKeys 359: 13-33. https://doi.org/10.3897/zookeys.359.6057
No full textFigure 93 - Distribution map. ○ Microserangium erythrinum Wang & Ren, sp. n. ● Microserangium fuscum Wang & Ren, sp. n. △ Microserangium glossoides Wang & Ren, sp. n. ▲ Microserangium shennongensis Wang & Ren, sp. n. ▼ Microserangium semilunatum Wang & Ren, sp. n. ★ Microserangium hainanensis Miyatake, 1961 ◇ Microserangium deltoides Wang & Ren, sp. n. ◆ Microserangium okinawense Miyatake, 1961 ■ Microserangium dactylicum Wang & Ren, sp. n
Mechanically stiffness-adjustable actuator using a leaf spring for safe physical human-robot interaction
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Radiative properties of diffractively-coupled optical nano-antennas with helical geometry
No full textIn this paper, using the rigorous Surface Integral Equation (SIE)
method, we study light scattering by Au nano-helices with geometrical
dimensions comparable to the wavelength of visible light and we
demonstrate that they behave as highly directional nano-antennas with
largely controllable radiation and polarization characteristics in the
optical regime. In particular, we systematically investigate the
radiation properties of helical nano-antennas with realistic Au
dispersion parameters in the visible spectral range, and we establish
general design rules that enable the engineering of directional
scattering with elliptical or circular polarization. Given the realistic
material and geometric parameters used in this work, our findings
provide novel opportunities for the engineering of chiral sensors,
filters, and components for nano-scale antennas with unprecedented beam
forming and polarization capabilities. (C) 2015 Optical Society of
Americ
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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