14,537 research outputs found
Rufitidia fissa Zou & Lin & Huang & Zhang 2022, sp. nov.
No full text1. Rufitidia fissa Zou & Zhang sp. nov. (Figs 1a–d, 2) Description. Vertex yellow, with two small dark brown spots, whitish towards eyes (Figs 1a, c). Coronal suture short, about 1/2 vertex middle length, broad dark brownish longitudinal streak in the coronal suture accompanied with two small roundish patches laterally (Figs 1a, c). Eyes grey. Face frontoclypeus area brownish, with areas of yellowish (Fig. 1d). Pronotum anterior and lateral regions yellow or brownish yellow, with irregular dark brown or black patterns; central part and posterior region from brownish to dark brownish (Figs 1a, c). Forewing brownish yellow (Figs 1a, b). Abdominal apodemes small and short (Fig. 2b). Pygofer lobe broad, with some microsetae scattered in the middle of lobe, ventro-cephalic angle and near caudal margin (Fig. 2a). Dorsal appendage curved ventrally, slightly branched at apex (Figs 2a, c). Subgenital plate elongated, acutely narrowed in apical part, with four macrosetae not far from apex, with a few similar microsetae scattered caudally (Fig. 2a). Anal tube appendage tapering apically and nearly right-angle curved (Fig. 2a). Style slim, apex sharp (Figs 2e, f). Aedeagal shaft compressed, with one pair of apical processes extended ventrad, and two pairs of subbasal processes extended dorsad, one process on ventral side divided from shaft near middle and irregularly serrated ventrally in lateral view (Figs 2g, h, i). Connective Y-shaped, arms long, central lobe absent, manubrium short and inflated (Fig. 2d). Measurement. Length of male 3.4–3.5mm (including wing). Material examined. Holotype: ♂, CHINA, Yunnan Prov., Nujiang, 20 June 2019, coll. Lin Lv; Paratypes: 3♂, same data as holotype. Remarks. This new species has all the general characteristics of R. trinotata Dworakowska, 1994, but can be distinguished by the dorsal appendage curved ventrally, slightly branched at apex; aedeagal shaft with one process on ventral side; the ventral edge of the shaft or the process irregularly serrated in lateral view; forewing brownish yellow. Etymology. The specific epithet is derived from the Latin “fissus” (cleft), referring to the ventral process split from the aedeagal shaft in lateral view.Published as part of Zou, Hongfen, Lin, Shuanghu, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Rufitidia (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of two new species, pp. 419-424 in Zootaxa 5190 (3) on pages 420-424, DOI: 10.11646/zootaxa.5190.3.5, http://zenodo.org/record/713817
Rufitidia dissidens Zou & Lin & Huang & Zhang 2022, sp. nov.
No full text2. Rufitidia dissidens Lin & Zhang sp. nov. (Figs 1e–h, 3) Description. Vertex pale yellow, with two small brown spots, whitish towards eyes (Figs 1e, g). Coronal suture distinct, broad dark brownish longitudinal streak in the coronal suture accompanied with two small roundish patches laterally. Eyes black. Head slightly narrower than greatest width of pronotum (Figs 1e, g). Face pale yellow, with areas of white (Fig. 1h). Frontoclypeus area and anteclypeus posterior region light brown. Pronotum anterior region pale yellow, with two small round brown spots; central part and posterior region from brownish yellow to brown, with irregular dark brown or black patterns (Figs 1e, g). Forewing overall pale white, base and inner margin brownish gray (Figs 1e, f). Abdominal apodemes small and short (Fig. 3b). Pygofer lobe broad, with some microsetae scattered in the middle of lobe, ventro-cephalic angle and near caudal margin (Fig. 3a); dorsal appendage u-shaped, pointed at both ends (Figs 3a, c). Subgenital plate extended to hind margin of pygofer lobe, acutely narrowing at apex, with four macrosetae not far from terminal part, of which two are longer and two shorter (Fig. 3a). Anal tube appendage tapering apically and nearly right-angle curved (Fig. 3a). Style slim, apex sharp (Figs 3e, f). Aedeagal shaft compressed, with one pair of subapical processes extended ventrad, and two pairs of subbasal processes extended dorsad, ventral edge of shaft irregularly dentate in lateral view (Figs 3g, h). Connective V-shaped, manubrium short (Fig. 3d). Measurement. Length of male 3.3–3.4mm (including wing). Material examined. Holotype: ♂, CHINA, Fujian Prov., Nanping, 19 July 2017, coll. Shuanghu Lin; Paratypes: 2♂, same data as holotype. Remarks. This new species is similar to R. trinotata Dworakowska, 1994, but can be distinguished by the ushaped dorsal pygofer appendage, pointed at both ends; the ventral edge of the shaft irregularly dentated in lateral view; with one pair of subapical processes extended ventrad. Etymology. The specific epithet is derived from the Latin “dissidens” (different), referring to the dentate edge of the aedeagus.Published as part of Zou, Hongfen, Lin, Shuanghu, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Rufitidia (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of two new species, pp. 419-424 in Zootaxa 5190 (3) on page 424, DOI: 10.11646/zootaxa.5190.3.5, http://zenodo.org/record/713817
Revisiting the "Irtish tectonic belt": Implications for the Paleozoic tectonic evolution of the Altai orogen
No full textAbstract not availableChuan-Lin Zhang, M. Santosh, Hai-Bo Zou, Yi-Gang Xu, Gang Zhou, Yong-Guan Dong, Ru-Fu Ding, Hong-Yan Wan
Mitjaevia flexuosa Lin & Zhang 2022, sp. nov.
No full text4. Mitjaevia flexuosa Lin & Zhang sp. nov. (Figs 1m –p, 5) Description. Crown milky to pale yellow, with pair of brown round spots in the middle. Eyes gray marked with brownish. Face milky to yellow. Other features as in generic description (Figs 1m, n, o, p). Abdominal apodemes short and broad, extending to middle of sternite III (Fig. 5b). Anal tube short, without appendage (Fig. 5a). Pygofer lobe with few microsetae scattered on caudal part, hind margin rounded (Fig. 5a), dorsal appendage sinuate (Figs 5a, c). Subgenital plate expanded in the middle, several microsetae on subbasal convex part, 3 macrosetae in the middle (Fig. 5a). Connective Y-shaped, with manubrium long, central lobe developed (Fig. 5d). Style with apex relatively short and slim (Figs 5e, f). Aedeagus with both preatrium and dorsatrium developed, gonopore apical, aedeagal shaft with pair of basal processes on ventral side long and slim (Figs 5g, h). Measurement. Male 1.90–1.95mm. Material examined. Holotype: ♂, CHINA, Guangxi Prov., Guilin, 2018.VII.16, coll. Shuanghu Lin; Paratypes: 1♂, same data as holotype. Diagnosis. This new species is similar to M. elegantula, but has the pygofer lobe posterior margin rounded, the aedeagal shaft basal processes much thinner than the shaft, and the angle between aedeagal shaft and preatrium acute. M. elegantula has the pygofer lobe posterior margin angled, the aedeagal shaft basal processes almost the same width as the shaft, and the angle between aedeagal shaft and preatrium obtuse. Etymology. This specific epithet is derived from Latin word “flexuosus”, referring to the sinuate pygofer dorsal appendage.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Mitjaevia Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of five new species, pp. 403-415 in Zootaxa 5194 (3) on page 409, DOI: 10.11646/zootaxa.5194.3.4, http://zenodo.org/record/715459
Mitjaevia tridentata Lin & Zhang 2022, sp. nov.
No full text6. Mitjaevia tridentata Lin & Zhang sp. nov. (Figs 1u–x, 7) Description. Crown milky to yellow, with pair of large black triangular spots in the middle. Coronal suture extending to 1/2 length of crown. Face slightly flat in profile. Eyes gray marked with yellow-brownish. Other structures as in generic description (Figs 1u, v, w, x). Abdominal apodemes divergent, only extended to the middle of sternite III (Fig. 7b). Anal tube short, with poorly developed appendage (Fig. 7a). Pygofer lobe with several microsetae scattered on ventral side and microtrichia scattered on caudal parts (Fig. 7a), dorsal appendage almost straight, produced medially, forming a small tooth (Figs 7a, c), apex of ventral appendage with 3 teeth (Fig. 7a). Subgenital plate with several microsetae scattered on distal part, distal part expanded, group of microsetae along upper margin of subbasal part merging to 1row near middle, finally extending to apical, 3 macrosetae near middle (Fig. 7a). Connective Y-shaped, with manubrium short and broad, central lobe distinct (Fig. 7d). Apex of style enlarged and inner margin produced (Figs 7e, f). Aedeagus with preatrium developed, longer than aedeagal shaft, aedeagal shaft tubular and slightly S-shaped in profile, with pair of long and slim basal processes, extending almost to gonopore, one angulate process on ventral side below basal processes, gonopore apical, a pair of small tooth-like subapical processes located near lower margin of gonopore on ventral side (Figs 7g, h). Measurement. Male 2.70–2.80mm, female 2.80mm. Material examined. Holotype: ♂, CHINA, Zhejiang Prov., Lishui, 2017.VII.30, coll. Shuanghu Lin; Paratypes: 4♂ 7♀, same data as holotype; 1♂, CHINA, Fujian Prov., Ningde, 2017.VII.24, coll. Shuanghu Lin; 1♀, CHINA, Zhejiang Prov., Zhoushan, 2017.VI.3, coll. Shuanghu Lin. Diagnosis. This new species is similar to M. protuberanta, but has the apex of the pygofer ventral appendage with 3 teeth, and the aedeagal shaft apex pointed in profile, with basal processes not extended to gonopore. M. protuberanta has the apex of the pygofer ventral appendage with only 1 tooth, and the aedeagal shaft apex rounded in profile, with basal processes extended to the gonopore. Etymology. The specific epithet is derived from the Latin prefix “tri-” and the Latin word “dentatus”, referring to the tridentate apex of the pygofer ventral appendage.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Mitjaevia Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of five new species, pp. 403-415 in Zootaxa 5194 (3) on page 412, DOI: 10.11646/zootaxa.5194.3.4, http://zenodo.org/record/715459
Shibinga grossiprocessa Lin & Zhang 2023, sp. nov.
No full textShibinga grossiprocessa Lin & Zhang sp. nov. (Figs 1q–t, 7) Description. Crown dark brown, anterior margin rounded, with small pale yellow spots at vertex. Eyes blackish or dark brown. Other external characteristics as in the generic description (Figs 1q, r, s, t). Abdominal apodemes resembles Shibinga gracilprocessa (Fig. 7b). Anal tube with poorly sclerotized structure (Fig. 7a). Pygofer lobe with posterior margin rounded, with several microsetae at cephalo-ventral angle and numerous microtrichia scattered on caudal half (Fig. 7a). Characteristics of dorsal appendage, style and connective characters as in generic description (Figs 7a, c, d, e, f). Subgenital plate short and slim, with about 3 macrosetae in the middle (Fig. 7a). Aedeagal shaft tubular, slightly curved dorsad, with pair of basal appendages extremely long and similar in width to shaft (Figs 7g, h). Measurement. Male 2.45mm, female 2.40–2.50mm. Material examined. Holotype: ♁, CHINA, Zhejiang Prov., Lishui, 2017.Ⅴ.20, coll. Shuanghu Lin; Paratypes: 5♁ 5♀, same data as holotype. Remarks. This new species is similar to Shibinga gracilprocessa, but has the subgenital plate slim and the aedeagal shaft tubular and wider than the basal appendages in lateral view. Shibinga graciliprocessa has the subgenital plate more robust and the aedeagal shaft compressed with basal appendages as wide as the shaft. Etymology. The specific epithet is derived from Latin words “ grossus ” and “ processus ” referring to the robust aedeagal shaft basal appendages.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2023, Five new species and two new records of Erythroneurini from China (Hemiptera, Cicadellidae, Typhlocybinae), pp. 568-582 in Zootaxa 5227 (5) on pages 576-579, DOI: 10.11646/zootaxa.5227.5.4, http://zenodo.org/record/752329
Motaga rokfaoides Lin & Zhang 2023, sp. nov.
No full textMotaga rokfaoides Lin & Zhang sp. nov. (Figs 1e–h, 4) Description. The body shape and color pattern resemble Motaga rokfa Dworakowska, but crown vertex without dark spot (Figs 1e, f, g, h). Pygofer lobe with few microsetae on distal half (Fig. 4a). Dorsal appendage short and broad, apex pointed and slightly curved ventrad (Figs 4a, c). Subgenital plate with about 4 macrosetae (Fig. 4a). Style and connective resemble those of M. rokfa Dworakowska (Figs 4d, e, f). Aedeagal shaft slightly compressed, bifurcated at apex, with pair of basal appendages reaching gonopore, gonopore located in the upper 1/3 length of shaft on ventral surface (Figs 4g, h). Measurement. Male 2.40mm, female 2.40mm. Material examined. Holotype: ♁, CHINA, Yunnan Prov., Jinghong, 2017.IV.6, coll. Shuanghu Lin; Paratypes: 6♁ 4♀, same data as holotype. Remarks. This new species is similar to Motaga rokfa Dworakowska, but has the crown apex without a dark spot, the apex of the dorsal pygofer appendage not exceeding the hind margin of pygofer side, the hind margin of the pygofer side rounded, the gonopore located in the upper 1/3 of the aedeagal shaft on the ventral surface, and the aedeagal shaft almost straight in lateral view. Motaga rokfa Dworakowska has the crown with a dark spot, the pygofer dorsal appendage exceeding the posterior margin, the hind margin of the pygofer side angled, the gonopore near the middle of the ventral surface of the aedeagal shaft and the shaft curved dorsad in lateral view. Etymology. The specific epithet is derived from the species name “ rokfa ” and Greek suffix “- oides ”, referring to the similarity of this species to Motaga rokfa Dworakowska.Published as part of Lin, Shuanghu, Zou, Hongfen, Huang, Min & Zhang, Yalin, 2023, Five new species and two new records of Erythroneurini from China (Hemiptera, Cicadellidae, Typhlocybinae), pp. 568-582 in Zootaxa 5227 (5) on pages 571-573, DOI: 10.11646/zootaxa.5227.5.4, http://zenodo.org/record/752329
Spatial co-relation of innovation in Yangtze Economic Belt.
No full textData source: Zou Lin, Zhu Yiwen. Research on Innovation Performance in Heterogeneous Region: Evidence from Yangtze Economic Belt in China [J]. Complexity, 2020(2):1–9.</p
On some nonlinear PDEs with Sobolev-hardy critical exponents and a Li-Lin open problem
No full textLet Ω be a C1 open bounded domain in RN, N ≥ 3, with (Formula presented.). We consider the following problem involving Hardy–Sobolev critical exponents: (Formula presented.), where 0 ≤ s1 < 2, 0 ≤ s2 < 2, 2 *(s2) ≠ λ ∈ R, 1 ≤ p ≤ 2*(s1) - 1 and with choices of exponents and parameters corresponding to cases in which (P) has not been before investigated. We prove the existence of positive solutions, which, in some cases, are also shown to be ground states. We remark that we give a first partial answer to a question proposed by Li and Lin (Arch Ration Mech Anal 203(3):943–968, 2012). © 2015, Springer-Verlag Berlin Heidelberg
FIGURE 1. a–d. R in Taxonomic study of the leafhopper genus Rufitidia (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of two new species
No full textFIGURE 1. a–d. R. fissa Zou & Zhang sp. nov. e–h. R. dissidens Lin & Zhang sp. nov. a, c, e, g. dorsal view; b, f. lateral view; d, h. face.Published as part of Zou, Hongfen, Lin, Shuanghu, Huang, Min & Zhang, Yalin, 2022, Taxonomic study of the leafhopper genus Rufitidia (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) from China, with descriptions of two new species, pp. 419-424 in Zootaxa 5190 (3) on page 421, DOI: 10.11646/zootaxa.5190.3.5, http://zenodo.org/record/713817
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