19,026 research outputs found
Nanoimprint lithography for planar chiral photonic meta-materials
No full textRoom temperature nanoimprint lithography has successfully been applied to the fabrication of planar chiral photonic meta-materials. For dielectric chiral structures a single layer of thick HSQ was used while for metallic chiral structures a bi-layer technique using PMMA/hydrogen silsequioxane (HSQ) was applied. The polarization conversion capabilities of planar chiral structures imprinted in dielectric materials have experimentally been observed. This indicates that the developed processes in this work have the prospect of manufacturing planar photonic meta media in high volume at low cost
Nais longidentata Cui, He, Peng & Wang, 2015, sp. n.
No full text13. <i>Nais longidentata</i> sp. n. <p>(Figures 4, 5; Table 2)</p> <p> <b>Holotype.</b> IHB NMC 20110702a, mature specimen mounted in Canada balsam, and stained with borax carmine.</p> <p> <b>Type locality.</b> ST57, N 30°47'12.6", E 90°58'43.9", Lake Namco of Tibet, ca. 4,716 m asl, lake shore substrate type coarse gravel and sand; water depth 0.3 m, water temperature 10.0°C, dissolved oxygen 7.48 mg/L, pH 10.42, conductivity 1,783 µS/cm. 2 July 2011, collected by X. B. He, Y. D. Cui.</p> <p>2014).</p> <p> <i>N. longidentata N. bretscheri N. communis N. elinguis N. pardalis N. variabilis N. badia</i></p> <p> Species <b>sp. n.</b> Michaelsen, 1899 Piguet, 1906 Müller, 1774 Piguet, 1906 Piguet, 1906 Peng <i>et al.</i>, 2014 Length (mm) 4.3–5.7 3–7 1.8–12 2.2–12 2.5–7.0 3–10 4.2–9.1 <b>Paratypes.</b> IHB NMC 20110702b–e, 4 specimens from the type locality mounted in Canada balsam, and stained with borax carmine.</p> <p> <b>Other material.</b> More than 50 immature specimens from ST5, ST9, ST31, ST53, ST57, preserved in 10% formalin, collected by X. B. He, Y. D. Cui.</p> <p> <b>Etymology.</b> The specific name " <i>longidentata</i> ” is Latin for "with long teeth”, and refers to the needle with two long teeth.</p> <p> <b>Description.</b> Length 3.3–7.4 mm (holotype 4.3 mm), width at VI 0.3–0.6 mm (holotype 0.5 mm), segments 34–41(holotype 34). Prostomium conical. Eyes present, body pigment absent. Pharynx in II–III. Stomach in VII– VIII, dilatation sudden in VII, no elongate cells. Clitellum inconspicuous. Coelomocytes abundant. No swimming.</p> <p>Dorsal chaetae from VI onwards (Fig. 5 F). Hairs (0)1–2 per bundle, 225–450 Μm long, with faint serration (Fig. 5 C). Needles 1–2 per bundle, 92–112 Μm long, with two long parallel teeth (10.0–13.8 Μm long), distal tooth slightly thinner and shorter than proximal, or subequal; nodulus ca. 2/5 from distal end (Fig. 4 D, Fig. 5 D–E). Ventral chaetae of II–V 3–4 per bundle, 78–84 Μm long, distal tooth longer and thinner than proximal, with median or slightly distal nodulus, hardly longer and thinner than the rest. Ventral chaetae from VI 2–5 per bundle, 68–78 Μm long, distal tooth slightly longer than proximal, with 1–3 fine intermediate teeth, nodulus 2/5 from distal end (Fig. 4 A–C; Fig. 5 A–B). Penial chaetae (Fig. 4 E) 3 per bundle, 70–112 Μm long, 4 Μm thick, simple-pointed. Male pores paired in segment VI. Spermathecal pores paired in segment V.</p> <p>Clitellum in V–VI. Male genitalia paired in V–VI. Vasa deferentia (Fig. 4 F, vd) 90–100 Μm long, 8–9 Μm wide, completely surrounded by abundant prostate gland cells (Fig. 4 F, pr), joining the atria subapically. Atrial ampullae large and round, 120 Μm in length, 45 Μm in diameter, wall 5 Μm thick (Fig. 4 F, at). Spermathecal ampulla pear-shaped, 90 Μm long, 50 Μm wide, with distinct duct 60–70 Μm long, 9–10 Μm wide (Fig. 4 F, sp).</p> <p> <b>Distribution.</b> Known only from Lake Nam Co and Lake Yamzho Yumco of Tibet.</p> <p> <b>Remarks.</b> Considering the characters such as the presence of eyes, coelomocytes abundant, dorsal chaetae from VI with hairs and double-pronged needles, ventral chaetae of II–V longer and thinner than the rest, pharynx in II–III, stomach beginning in VII, spermathecae with distinct ducts, vasa deferentia with prostate gland cells joining the atria subapically, atria without prostate glands, penial chaetae present with a simple hook, we think that the new species fits the definition of <i>Nais</i> Müller, 1773 (Sperber 1948; Brinkhurst & Jamieson 1971; Hrabě 1979; Timm 1999; Envall <i>et al.</i> 2012).</p> <p> About 31 species have been described in <i>Nais</i>, and ten species are distributed in China (Sperber 1948; Liang 1964; Brinkhurst & Jamieson 1971; Semernoy 2004; Envall <i>et al.</i> 2012; Peng <i>et al.</i> 2014). <i>N. longidentata</i> <b>sp. n.</b> is distinguished from congeners in having long and parallel needle teeth, faintly serrated hairs, and pectinate ventral chaetae with 1–2 intermediate teeth.</p> <p> Comparing <i>N. longidentata</i> <b>sp. n.</b> with allied species (Table 2), the new species is similar to <i>N. elinguis</i> by the long and parallel needle teeth. However, the needles of the new species are longer than those of <i>N. elinguis</i> (10.0– 13.8 Μm <i>vs</i>. 3.1–4.6 Μm). <i>N. badia</i> Peng <i>et al</i>., 2014 resembles the new species in serrate hairs and pectinate ventral chaetae, but its large area of reddish brown pigment in I–VIII, wave-like body movements, and vasa deferentia with prostate gland cells only on their posterior parts are significantly different from <i>N. longidentata</i> <b>sp. n.</b>. Among further similar species, <i>N. bretscheri</i> Michaelsen, 1899 differs from the new species in giant chaetae in some anterior ventral segments; <i>N. communis</i> Piguet, 1906 differs in the thick prostate gland cells only on their posterior parts; <i>N. variabilis</i> Piguet, 1906 and <i>N. pardalis</i> Piguet, 1906 swim with spiral body movements and their stomach has elongate cells. In all these species the needle teeth are considerably shorter than in <i>N. longidentata</i> <b>sp. n.</b></p>Published as part of <i>Cui, Yongde, He, Xuebao, Peng, Yu & Wang, Hongzhu, 2015, Records of Naididae and Lumbriculidae (Clitellata) from Tibet, China, with description of a new species of Nais, pp. 513-530 in Zootaxa 3956 (4)</i> on pages 521-524, DOI: 10.11646/zootaxa.3956.4.4, <a href="http://zenodo.org/record/240764">http://zenodo.org/record/240764</a>
Stability of stochastic nonlinear systems with state-dependent switching
No full textIn this paper, the problem of stability on stochastic systems with state-dependent switching is investigated. To analyze properties of the switched system by means of Itô’s formula and Dynkin’s formula, it is critical to show switching instants being stopping times. When the given active-region set can be replaced by its interior, the local solution of the switched system is constructed by defining a series of stopping times as switching instants, and the criteria on global existence and stability of solution are presented by Lyapunov approach. For the case where the active-region set can not be replaced by its interior, the switched systems do not necessarily have solutions, thereby quasi-solution to the underlying problem is constructed and the boundedness criterion is proposed. The significance of this paper is that all the results presented depend on some easily-verified assumptions that are as elegant as those in the deterministic case, and the proofs themselves provide design procedures for switching controls.Zhaojing Wu, Mingyue Cui, Peng Shi and Hamid Reza Karim
Tubifex conicus He, Cui & Wang 2012
No full text23. Tubifex conicus He, Cui & Wang, 2012 Tubifex conicus He, Cui & Wang, 2012: 160 –162. Material. Lake Yamzhao Yumco: ST 36, 2 spms; ST 37, 17 spms; ST 39, 45 spms; ST 40, 12 spms; ST 41, 24 spms; ST 42, 6 spms; ST 43, 27 spms; ST 44, 2 spms; ST 47, 36 spms; ST 48, 29 spms; ST 49, 21 spms. Remarks. Known only from Lake Yamzhao Yumco.Published as part of Cui, Yongde, He, Xuebao, Peng, Yu & Wang, Hongzhu, 2015, Records of Naididae and Lumbriculidae (Clitellata) from Tibet, China, with description of a new species of Nais, pp. 513-530 in Zootaxa 3956 (4) on page 527, DOI: 10.11646/zootaxa.3956.4.4, http://zenodo.org/record/24076
Limnodrilus paraclaparedianus Zhou & Peng & Wang & Erséus & Cui 2021, n. sp.
No full textLimnodrilus paraclaparedianus Zhou & Cui n. sp. (Figures 4–6) Limnodrilus “ claparedianus-cervix ”. Liu et al. 2017a: p. 483f., Fig. 3, Supplementary document S1, Suppl. Table S1, Suppl. Fig. S2, S 3, S 5. Liu et al. 2017b: Table 1, p. 251f. Holotype. IHB HB20171202 a (CW0008), whole-mounted specimen, mature, stored at Institute of Hydrobiology, Chinese Academy of Sciences. Collected in the bottom sludge of Donghu Lake, Wuhan, Hubei (GPS: 114.352˚ E/30.535˚ N). COI barcode: GenBank MT 460105. Paratype. IHB HB20171202 b, whole-mounted specimen, mature, from type locality. Other material. 1 specimen for SEM (Fig. 4), from type locality; IHB AH20171211 a–b (CW0009–CW0010), 2 mature specimens from Longganhu Lake, Anhui; IHB AH20171123 a (CW0011), 1 mature specimen from Huaihe River, Anhui; IHB JS20181130 a (CW0018), 1 mature specimen from Taihu Lake, Jiangsu. For more details see Table 1. Etymology. Named “ paraclaparedianus ” for the resemblance with “ Limnodrilus claparedianus Ratzel, 1868 ” in terms of the male genitalia. Description. Length 18.00– 19.25 mm (fixed worms), first XII segments 2.85–3.30 mm (Holotype 2.85 mm), width at clitellum 0.42–0.54 mm (Holotype 0.42 mm), segments 80–95 (Holotype 80). Prostomium conical (Fig. 4A). Clitellum inconspicuous. All chaetae bifid (Figs. 4C–F, 5A–D). Anterior bundles with 4–7 chaetae, length 80–125 µm, width 2.5–3.7 µm, nodulus 1/3 from the distal end. 3–4 chaetae per bundle in mid-body, 1–2 per bundle in posterior segments. Upper tooth slightly longer than lower in anterior chaetae, thereafter progressively equal-to-shorter than lower towards the posterior part of body. No modified spermathecal chaetae. Spermathecal pores (Fig. 4B) paired ventrally in middle of X; male pores paired ventrally in middle of XI. Chloragogen cells from VI. No coelomocytes. Male genitalia (Fig. 6B) paired. Sperm funnel (Fig. 6B, sf) 90 µm long. Vas deferens (Fig. 6B, vd) long and coiled, 25–30 µm wide, entering atrium apically.Atrium (Fig. 6B, at) long, fusiform, 270–300 µm long, 75–80 µm wide. Prostate gland (Fig. 6B, pr) large, with irregular lobes, connected to middle of atrium. Ejaculatory duct (Fig. 6B, ed) leading to penis. Penis sheath (Figs. 5E, 6B, ps) long, cylindrical, slender, narrowing from base to head, tapering abruptly with a constriction near the top; the latter bent with a teardrop-shaped plate placed in oblique position; sheath walls not abruptly reduced in thickness at constriction. Penis sheath 620–1030 µm long, 40–50 µm wide at base, 15 µm wide at top, 15–27 times longer than broad. Spermathecal duct (Fig. 6A, sd) 50–56 µm wide, ampulla (Fig. 6A, sa) difficult to observe but about 340 µm long, 215 µm wide in one specimen. Spermatozeugmata (Fig. 6A, sz) about 300 µm long, 35–60 µm wide. Distribution and habitat: Species here reported from Provinces Hubei, Anhui, Jiangsu, Shanxi and Heilongjiang in China; also known (as “ L. claparedianus-cervix ”) from Europe (Germany, Romania) and USA (Liu et al. 2017a). Freshwater. Remarks: This species has the character combination diagnostic of Limnodrilus (Brinkhurst 1971; Liu et al. 2017a, b): no coelomocytes, bifid chaetae only, long vasa deferentia, small atria, large prostates connected to the middle of atria, long ejaculatory ducts, conspicuous cuticular penis sheaths, and presence of spermatozeugmata. Elongate penis sheaths similar to the ones in L. paraclaparedianus are also present in L. maumeensis, L. cervix, L. claparedianus, and in a species of L. hoffmeisteri s.l. (species "III" in Liu et al. 2017a, Fig. 6). Differences of these species to the new one are as follows: In L. maumeensis, the walls of the penis sheaths are conspicuously thickened on one side near the end, causing a bend in the shaft. In L. cervix, the walls of the penis sheaths are conspicuously thickened and abruptly thinner near the end, furthermore, the head has a triangular downward projection. In L. claparedianus, the upper tooth of the anterior chaetae is distinctly longer than the lower. Further subtle differences are the usually larger length/width ratio of the penis sheath (28 and more) and its rounded-triangular (vs. tear-dropshaped) head. In species III of L. hoffmeisteri, the upper tooth of anterior chaetae is much thicker and almost three times longer than the lower; furthermore, the head of the penis sheath is shaped like a plate-top, perpendicular to the long axis of the shaft (comp. Liu et al. 2017a, Fig. 3). The morphological and molecular characteristics of L. paraclaparedianus are identical with those of " L. claparedianus - cervix " described by Liu et al. (2017a), and therefore, we consider them as the same species. With the inclusion of the records in Liu et al. (2017a), it is clear that this new species is Holarctic in distribution.Published as part of Zhou, Tingting, Peng, Yu, Wang, Hongzhu, Erséus, Christer & Cui, Yongde, 2021, Molecular taxonomy and description of a new species of Limnodrilus (Naididae, Clitellata, Annelida) in China, pp. 301-321 in Zootaxa 5082 (4) on pages 313-316, DOI: 10.11646/zootaxa.5082.4.1, http://zenodo.org/record/579273
Macroteratura (Macroteratura) thrinaca
No full text2. Macroteratura (Macroteratura) thrinaca (Qiu & Shi, 2010) (Figs. 2, 3 A–B) Teratura (Macroteratura) thrinaca Qiu & Shi, 2010, Zootaxa, 2543: 48. Macroteratura (Macroteratura) thrinaca: Cigliano et al., 2020, Orthoptera Species File Online. Version 5.0/5.0. Male genitalia. Genitalia with basal area fused with the subgenital plate, apical half on dorsal surface slender, long and exposed; titillator sclerotized and apex acute (Fig. 4A); ventral surface of genitalia membranous. Material examined. 1♂, Baihualing, Baoshan, Yunnan, 21 August, 2018, coll. Peng Cui; 1♀, Baihualing, Baoshan, Yunnan, 22 August, 2018, coll. Peng Cui; 1♀, Baihualing, Baoshan, Yunnan, 19 August, 2018, coll. Peng Cui; 1♂, Baihualing, Baoshan, Yunnan, 20 September, 2019, coll. Peng Cui; 1♂, Baihualing, Baoshan, Yunnan, 21 September, 2019, coll. Peng Cui; 1♂, Baihualing, Baoshan, Yunnan, 22 September, 2018, coll. Peng Cui; 1♂, Bangdashan, Ruili, Yunnan, 16 August, 2015, coll. unknow. Distribution. China (Yunnan).Published as part of Chen, Lixuan, Cui, Peng, Zhuo, Zhao & Chang, Yanlin, 2020, Notes on the genus Macroteratura Gorochov, 1993 (Tettigoniidae: Meconematinae Meconematini) with description of one new species from China, pp. 95-104 in Zootaxa 4857 (1) on pages 98-99, DOI: 10.11646/zootaxa.4858.1.6, http://zenodo.org/record/441161
Macroteratura (Macroteratura) inospina Chen, Cui & Chang 2020, sp. nov.
No full text1. Macroteratura (Macroteratura) inospina Chen, Cui & Chang sp. nov. (Fig. 1) Description. Male. Body small, medium sized for the tribe Meconematini. Fastigium verticis conical, apex bluntly rounded, with a median sulcus. Face is slightly sloping backwards. Apical segment of maxillary palpus equal to subapical one in length, slightly swollen apically. Eyes ovoid and distinctly protruding outward. Anterior margin of pronotum nearly straight, posterior margin triangularly rounded; anterior part narrower while posterior part of pronotum wider in dorsal view; lateral lobes longer than deep, humeral sinus indistinct. Thoracic foramen exposed, ovoid. All femora without spines on ventral surface. Procoxa with a spine, protibia with 6–7 long spines on internal and external margins of ventral surface separately; tibial tympana open on both sides, oval. Mesotibia with 6–7 long spines on internal and external margins of ventral surface separately. Posttibia with 27–29 spines on internal and external margins of dorsal surface separately, with 8 outer and 2 inner spines on ventral surface, bearing 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs. Tegmina elongate, anterior and posterior margins nearly parallel, distinctly surpassing apices of postfemora, apices rounded. Hind wings longer than tegmina. Posterior margin of tenth abdominal tergite with a pair of generally symmetrical and long posterior processes, lamellate, narrow and thin; inner margin of subapical area with 1 spine and apical area with a notch. Cercus stout when viewed laterally; base slightly narrow, internal margin longitudinally concave, apical area slightly curved inwards, dorsal and ventral margins bearing 1 curved spine-like process respectively, dorsal process slender, elongate and slightly curved interiorly, but ventral one short, thick and slightly curved dorsad. Base of genitalia fused with subgenital plate and ventral margin with 1 pair of stout and short processes, its distal part bluntly rounded; distal half of genitalia exposed, slender, apex truncate. Coloration. Body yellowish green, dorsal surface of head brown; eyes reddish brown; antennae blackish brown. Pronotal disc with a broad longitudinal brown stripe and its outer margins blackish brown, and with a thin longitudinal light yellow stripe in the midline, medial transverse sulcus blackish brown. Tegmen light brown, and exposed area of hind wing light brown. Apex of cercus with a dorsal spine brown. Apex of genitalia brown. Spines on tibiae with apices brown. Female. Appearance is similar to male. Cercus conical, apex acute. Ovipositor nearly straight, dorsal valvulae as long as ventral ones, apices of dorsal valvulae acute and apices of ventral ones hook-shaped. Subgenital plate nearly trapezoid (deformed), basal area broad, basal margin concave. Type material. Holotype: ♂, Tongbiguan, Yingjiang, Yunnan, 8 August, 2018, coll. Peng Cui. Paratype: 1♀, Tongbiguan, Yingjiang, Yunnan, 8 August, 2018, coll. Peng Cui. Measurements(mm). Body: ♂ 15.2, ♀ 15.0; pronotum: ♂ 5.0, ♀ 4.5; postfemora: ♂ 15.0, ♀ 16.2; tegmina: ♂ 19.0, ♀ 18.6; ovipositor: 14.2. Distribution. China (Yunnan). Discussion. The new species slightly resembles Macroteratura (Macroteratura) thrinaca (Qiu & Shi, 2010) and Macroteratura (Macroteratura) megafurcula (Tinkham, 1944), but differs in the following characters: the posterior process of male tenth abdominal tergite with 1 spine on inner margin of subapical area, apical area with a notch; cercus with 1 curved spine-like process on dorsal and ventral margins on apical area respectively; base of genitalia with 1 pair of stout and short processes on ventral margin, its apex truncate. Etymology. The name of the new species is derived from the subapical area of posterior process of male tenth abdominal tergite with 1 spine on inner margin. Latin “ in- ” means inner margin; Latin “ spin -” means spine.Published as part of Chen, Lixuan, Cui, Peng, Zhuo, Zhao & Chang, Yanlin, 2020, Notes on the genus Macroteratura Gorochov, 1993 (Tettigoniidae: Meconematinae Meconematini) with description of one new species from China, pp. 95-104 in Zootaxa 4857 (1) on pages 96-98, DOI: 10.11646/zootaxa.4858.1.6, http://zenodo.org/record/441161
高能洪水沉积研究综述 王
No full textDiscoveries of cataclysmic glacial lake outburst floods have expanded the scale and frequency of known mass transport events on Earth and other planets. It has been realized that sedimentary deposits related to high-energy freshwater floods are widespread across continents and these deposits share some commonalities when compared carefully. However, the identification and sophisticated reconstruction ofthese high-energy flood events require well-conditioned stratigraphic models of depositional successions, yet such models are still lacking. Thus, the primary purpose of this paper is to examine and condense the published stratigraphic and sedimentological evidence to identify the key signatures of megaflood successions. The deposits are often the only record of a flood; therefore, the secondary purpose is to interpret the sedimentary sequences in order to reconstruct the behavior and dynamics of a single and multiple flood events. The deposits of high-energy floods are usually massive and extensive, exhibiting sedimentary structures such as amalgamation, rhythmicity, outsized clasts, intraclasts, and obstacle marks. Typical sedimentary successions of high-energy floods include basal coarse parallel-bedded units, large-scale clinoforms, horizontally beddedthin laminated units, ripple and dune cross-beds, silt beds, and debris flow deposits. Such a succession is usually dominated by high concentration suspension rain-outs, representing a single cycle of waxing and waning flood flow. Clay and silt are generally sparse or absent and are transported further down the system. At the scale of the hydrograph, the successions indicate that flows initially accelerate and then decelerate,with significantly shorter periods of flow pulses also evident in the sedimentary signatures
Xizicus (Eoxizicus) gaoligongshanensis Cui, Liu & Shi 2020, sp. nov.
No full text2. Xizicus (Eoxizicus) gaoligongshanensis Cui, Liu & Shi sp. nov. (Fig. 2) Description. Male. Body small. Fastigium verticis conical, apex slightly rounded, with a distinct longitudinal sulcus. Eyes semiglobular and protruding forward. Apical segment of maxillary palpi about equal to subapical one in length, faintly inflated apically. Anterior margin of pronotum nearly straight, posterior margin obtusely rounded (Fig. 2A); lateral lobes with height nearly equal to length; humeral sinus shallow (Fig. 2B). Thoracic foramen exposed, ovoid (Fig. 2B). Tegmina extending beyond apices of metafemora distinctly; hind wings longer than tegmina by approximately 2 mm. Procoxae with a spine; tibial tympana open on both sides. Protibiae with 6 outer and 5 inner spines on ventral surface, and 2 outer apical and 1 inner apical spines shorter than others. Mesotibiae with 6 outer and 5 inner spines on ventral surface, and 2 outer apical and 1 inner apical spines shorter than others. Metatibiae with 22–24 outer and inner spines on dorsal surface as well as 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs. Posterior margin of tenth abdominal tergite with a pair of small posterior processes, area between them slightly concave (Fig. 2F). Cercus with basal half stout; internal margin of basal half with a process triangularly expanded, apical area curved dorsad, apex acute; apical half slender and apex bluntly rounded (Fig. 2 C–F). Subgenital plate nearly rectangle (somewhat deformed), posterior margin feebly concave. Styli short, conical, apices rounded, inserted on apices of lateral margins of subgenital plate. Colouration. Body yellowish green (when alive greenish). Pronotal disc with a pair of blackish brown longitudinal stripes (Fig. 2A). Posterior margins of left and right tegmina with blackish brown stripes constituting about 3/4 of the whole tegmen length. Metafemoral genicular lobes with a black spot on inner and outer sides separately, and spines of metatibiae on dorsal surface blackish brown. Female. Appearance is similar to male. Ninth abdominal tergite with middle area narrower, lateral areas extended triangularly backward. Tenth abdominal tergite split longitudinally. Epiproct nearly triangular. Cerci conical and apices thin and acute. Subgenital plate trapezoid with basal half narrow and apical half wide, with one conspicuous transverse fold in the middle, and posterior margin slightly concave (Fig. 2I). Ovipositor with apical half slightly curved dorsad, basal area stout; dorsal valvulae with apices acute and ventral ones with apices hook-shaped (Fig. 2H). Material examined. Holotype: ♂, Gaoligongshan, Baoshan, Yunnan, Alt. 2060m, N. 25.2995º, E. 98.7836º, 16 September, 2019, coll. Peng Cui. Paratype: 1♀, other data same to the holotype. Measurements (mm). Body: ♂ 11.5, ♀ 14.0; pronotum: ♂ 3.8, ♀ 4.3; tegmina: ♂ 22.0, ♀ 24.0; metafemora: ♂ 11.0, ♀ 12.5; ovipositor: 12.2. Distribution. China (Yunnan). Discussion. The new species resembles Xizicus (Eoxizicus) kulingensis (Tinkham, 1943), but differs from the latter in male cercus bearing a process triangularly expanded on the base, in female subgenital plate with one obvious transverse fold in the middle. Etymology. The name of the new species is originated from the type locality.Published as part of Cui, Peng, Liu, Qing & Shi, Fuming, 2020, Two new species of the genus Xizicus Gorochov, 1993 (Tettigoniidae: Meconematinae: Meconematini) from Gaoligongshan, Yunnan, China, pp. 44-50 in Zootaxa 4748 (1) on pages 44-50, DOI: 10.11646/zootaxa.4748.1.2, http://zenodo.org/record/369757
Xizicus (Axizicus) furcus Cui, Liu & Shi 2020, sp. nov.
No full text1. Xizicus (Axizicus) furcus Cui, Liu & Shi sp. nov. (Fig. 1) Description. Male. Body small-sized. Fastigium verticis conical, obtusely rounded apically, with a longitudinal sulcus. Eyes hemispherical and protruding forward. Apical segment of maxillary palpi slightly longer than subapical one, apex feebly swollen. Anterior margin of pronotum comparatively straight, posterior margin obtusely rounded (Fig. 1A); lateral lobes with height nearly equal to length, humeral sinus shallow (Fig. 1B). Thoracic auditory spiracle exposed, ovoid (Fig. 1B). Tegmina extending beyond apices of metafemora remarkably; hind wings slightly longer than tegmina. Procoxae with a spine; tibial tympana open on both sides. Protibiae with 6 outer and 5 inner spines on ventral surface. Mesotibiae with 6 outer and 5 inner spines on ventral surface. Metatibiae with 22–29 outer and inner spines on dorsal surface as well as 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs. The center of posterior margin of tenth abdominal tergite concave and near area thin (Fig. 1 C–D). Cercus with basal half stout, apical half slender and elongate, apex bluntly rounded; internal margin near middle area with an inner process thin and elongate, curved ventrad and apex subacute (Fig. 1 C–E). Subgenital plate with proximal area slightly broad and distal area narrow, and with a longitudinal groove; posterior margin with a concavity (Fig. 1G). Styli comparatively short, conical and apices bluntly rounded on apices of lateral margins of subgenital plate. Colouration. Body greenish. Pronotal disc with a pair of blackish brown longitudinal stripes (Fig. 1A). Metafemoral genicular lobes with a black spot on inner and outer sides separately, and spines of metatibiae on dorsal surface blackish brown. Female. Appearance is similar to male. Ninth abdominal tergite with lateral areas extended triangularly backwards. Tenth abdominal tergite split longitudinally. Epiproct nearly circular. Cercus conical and apex thin and acute. Subgenital plate nearly trapezoid, with basal half wider and lateral margins near the middle slightly curved dorsad, apical half tapering, and with one conspicuous transverse ridge in the middle, and posterior margin feebly concave (Fig. 1I). Ovipositor slightly straight, basal area stout; dorsal valvulae with apices acute and ventral ones with apices hook-shaped (Fig. 1H). Material examined. Holotype: ♂, Gaoligongshan, Baoshan, Yunnan, Alt. 1800m, N. 25.3023º, E. 98.7952º, 20 September, 2019, coll. Peng Cui. Paratype: 1♀, other data same to the holotype. Measurements (mm). Body: ♂ 12.3, ♀ 14.1; pronotum: ♂ 4.2, ♀ 4.3; tegmina: ♂ 23.1, ♀ 25.2; metafemora: ♂ 10.9, ♀ 12.1; ovipositor: 12.1. Distribution. China (Yunnan). Discussion. The new species resembles Xizicus (Axizicus) falcata Chang, Du & Shi, 2013, but differs from the latter in male cercus with apical half slender and long, and internal margin near middle area with an inner process thin and elongate, curved ventrad, and in female subgenital plate with one conspicuous transverse ridge in the middle area. The new species is similar to Xizicus (Eoxizicus) uncicercus Mao & Shi, 2015 and Xizicus (Eoxizicus) dischidus Di, Han & Shi, 2015, but can be distinguished from them in male cerci with a long inner process and posterior margin of tenth abdominal tergite without process. Etymology. The name of the new species is derived from the morphology of male cercus. Latin “ furca ” means bifurcate, indicating the bifurcate shape of cercus.Published as part of Cui, Peng, Liu, Qing & Shi, Fuming, 2020, Two new species of the genus Xizicus Gorochov, 1993 (Tettigoniidae: Meconematinae: Meconematini) from Gaoligongshan, Yunnan, China, pp. 44-50 in Zootaxa 4748 (1) on pages 44-50, DOI: 10.11646/zootaxa.4748.1.2, http://zenodo.org/record/369757
- …
