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Mirror of emptiness de Ma Li
No full textDates Lundi 7 avril, à 18h Lieu Auditorium 65, rue des Grands Moulins 75013 PARIS Mirror of emptiness de Ma Li 120 min | 2010 | vostfr Suivi d’un débat avec Françoise Robin, professeure de tibétain Dans un monastère bouddhiste rarement ouvert au public, Ma Li a filmé pendant plusieurs mois la vie de cinq lamas et d’un maître de funérailles. Leurs réflexions et leurs activités nous amènent à découvrir leur croyance, leurs pratiques religieuses et leur vie spirituelle. Le film suit la grande cé..
Delia latissima Fan, Ma & Li
No full textlatissima Fan, Ma & Li in Fan et al., 1982a: 228 (Delia). Holotype male with labels: (1) printed with handwritten inscriptions on white label: “ Gonghe Qinghai lake / no. 156 / Chinese Academy of Sciences ”; (2) handwritten on white label: “74. VII.15 / collector Shaoyuan Ma ”; (3) handwritten on red label: “ Holotype ”; (4) printed with handwritten inscriptions on red label: “ TYPE / Leptohylemyia / latissima / Fan, Ma. S.Y. et Li M. ”; (5) printed with handwritten inscriptions on red label: “ TYPE / Delia / latissima / Fan, Ma S.Y. et Li ”. Preservation: pinned; specimen intact. Current name: Delia latissima Fan, Ma & Li, 1982.Published as part of ZHANG, XUFENG & ZHU, WEIBING, 2014, The types of Anthomyiidae (Diptera) in the Shanghai Entomological Museum, Chinese Academy of Science, China, pp. 1-67 in Zootaxa 3756 (1) on page 32, DOI: 10.11646/zootaxa.3756.1.1, http://zenodo.org/record/503313
Mimesa infossa Ma, Li and Chen, sp. nov.
No full text1. Mimesa infossa Ma, Li and Chen, sp. nov. (Figs. 1–5) Diagnosis: The male of this species can be distinguished from the similar M. equestris (Fabricius, 1804) and other species of the genus by the following combination of characters: lower frons with deep depression; antennal segments IV–XI beneath with linear carinae; mesopleuron alutaceous, with contiguous, slender, longitudinal rugae; dorsum and posterior surface of propodeum with dense, slender, longitudinal rugae; free margin of clypeus with two semicircular prominences medially; and interantennal tooth conspicuous. Description: Male. Body length 5.0–7.0 mm. Black, weakly shiny; mandible apically bright reddish brown; tibial spurs fulvous; gastral tergum I posteriorly, tergum II wholly, terga III and IV posteriorly, and sternum II reddish brown. Setae on clypeus silvery, dense, on frons, vertex, thorax, propodeum, leg and petiole silvery, long, somewhat sparse. Clypeus with dense, fine punctures; free margin with two semicircular prominences medially; area near apex without tubercle (Fig. 1); basal half of clypeal disk moderately elevated. Mandible bidentate apically. Interantennal tooth conspicuous (Fig. 1). Antenna slender, segments IV–XI beneath with linear carinae, carinae on segments IV–VIII longer than those on segments IX–XI (Fig. 2); segment III about 2 ×, segment IV about 1.3 ×, segment XII about 1.1 × as long as wide apically, respectively. Lower frons with deep depression, upper frons with dense, fine punctures, and with slender, longitudinal ridges; ocellar area moderately elevated, with very fine, contiguous punctures; vertex flat, vertex and gena with very dense, slender, transverse ridges. HW: HLD: HLF = 73: 29: 59; POD: OOD: OCD = 11: 13: 11. Mesoscutum alutaceous, with sparse micro-punctures. Scutellum with fine, sparse punctures. Metanotum with dense, slender, irregular rugae. Mesopleuron alutaceous, with contiguous, slender, longitudinal rugae. Propodeal enclosure not delimited by carina, with shallow depression; dorsum and posterior surface of propodeum with dense, slender, longitudinal, regular rugae; lateral surface of propodeum with slender, longitudinal, irregular ridges. First recurrent vein of forewing ending in second submarginal cell, or interstitial between first and second submarginal cell; second recurrent vein ending in second submarginal cell. Legs normal, hind tibia with one row of yellowish spines on outer surface, spines slender, slightly longer than adjacent pubescence. Dorsal surface of petiole moderately convex, with longitudinal carina medially; basal width of petiole, in dorsal view, nearly equal to its apical width (Fig. 3); petiole with several slender longitudinal carinae on its apical half laterally; ventral surface of petiole flat, without keel. PL: PW: LTI: WTI: HFL: HTL = 32: 10: 40: 35: 45: 50. Hind trochanter not reaching end of petiole, hind femur far exceeding end of petiole. Gastral segments shiny, without punctures. Male genitalia (Figs. 4, 5). Female: Unknown. Specimen examined: Holotype: ɗ, China: Tibet, Mangkang, Rongxi, 29 ° 36 'N 98 ° 30 'E, 27.vi. 1976, coll. Yinheng Han. Paratype. 3 ɗ, China: Tibet, Mangkang, Rongxi, 29 ° 36 'N 98 ° 30 'E, 27.vi. 1976, coll. Yinheng Han; 2 ɗ, China: Tibet, Mangkang, 3800m, 29 ° 36 'N 98 ° 30 'E, 21.vi. 1976, coll. Yinheng Han. All type specimens are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, P. R. China. Distribution: China: Tibet. Etymology: The name, infossa, derived from the Latin infossa (= with depression), refers to the lower frons with a deep depression, which is one of the main recognition characters of this species.Published as part of Ma, Li, Li, Qiang & Chen, Xue-Xin, 2008, The genus Mimesa in China with descriptions of two new species (Hymenoptera: Apoidea: Crabronidae), pp. 19-29 in Zootaxa 1745 on pages 22-24, DOI: 10.5281/zenodo.18163
Odontopsen shii Ma, Li and Chen, sp. nov.
No full text<i>Odontopsen shii</i>, Ma, Li and Chen, sp. nov. <p>(Figs. 1–7)</p> <p>Female. Body length 8.7 mm. Black; flagellomeres IV–XI yellowish ventrally. Setae on labrum yellowish, dense and long; on mandible yellowish, sparse and short; on lower frons silvery, dense and short; on vertex brown, sparse and long, on mesopleuron and propodeum slightly yellowish, dense and long.</p> <p>Clypeus broad and polish, gradually impressed toward its middle, which is much lower than the laterals; free margin of clypeus with two broad, round prominences medially; each prominence with oval tubercle near apex, tubercle shiny and markedly elevated (Fig. 1). Mandible inconspicuously bidentate apically (Fig. 1). Interantennal tubercle small, round, conspicuous (Fig. 1). Upper frons with dense minute punctures that are 1× diameter apart. Frontal carina incomplete. Vertex smooth, posterior area deeply emarginated (Fig. 2), with dense and very slender transverse striations. Inner orbits in frontal view markedly divergent below (Fig. 1). Head in profile with occipital carina produced into conspicuous dentate process, outer margin of process with sparse, sturdy and longitudinal rugae (Figs. 3, 4). HW: HLD: HLF = 104: 37: 55; TW: EW: EL = 33: 19: 47; POD: OOD: OCD: DEL: DEU = 11: 19: 21: 75: 61; AOD: WAS: IAD = 19: 7: 16. Relative length of flagellomeres I–IV: 20, 14, 13, 12. Length of flagellomere I: width at apex = 20: 4 (Fig. 5).</p> <p>Pronotum with several short transverse rugae, and apicolateral process (Fig. 6). Scutum with sparse, minute punctures that are 1–4× diameters apart. Scutellum and metanotum smooth, shiny, and nearly impunctate. Mesopleuron shiny, smooth and impunctate, with very slender, sparse, short oblique transverse striations posteriorly; hypoepimeral area with very slender, dense longitudinal rugae. Propodeal enclosure with shallow depression, and slender, longitudinal rugae; propodeal pad broad, polished; posterior surface of propodeum with very slender, dense, regular, longitudinal rugae. Outer surface of hind tibia with row of yellowish sturdy spines. First recurrent vein of forewing ending in second submarginal cell; second recurrent vein ending in second submarginal cell or interstitial between second and third submarginal cell.</p> <p>Gastral segments polished. Petiole slender, long, smooth, shiny; dorsal surface with a very broad longitudinal carina medially and ventral surface without keel. PL: PW: LTI: WTI: HFL: HTL = 50: 9: 42: 36: 58: 67. Pygidial area broadly triangular, with dense, coarse punctures and with setae (Fig. 7).</p> <p>Male: Unknown.</p> <p> <b>Specimen examined.</b> Holotype: female, China: Tibet, Nyingchi Prefecture, Lulang, 29°30ʹN 94°18ʹE, 19.ix.2007, coll. Fu-ming Shi, deposited in the Insect Collections of Yunnan Agricultural University, Kunming, Yunnan Province, China (YAUK).</p> <p> <b>Distribution.</b> China (Tibet).</p> <p> <b>Etymology.</b> The species is named in honour of Prof. Fu-ming Shi, the collector of the holotype specimen.</p> <p> <b>Note.</b> This new species shares with the type species of <i>Odontopsen</i> with the following distinguishing characters: Frontal carina incomplete below; occipital carina reaching hypostomal carina far from mid-ventral line of head, lower part of carina produced obviously in male but developed into large process in female; pronotum with several oblique lateral carinules but without complete ridge like carina; omaulus curving toward prothorax, without acetabular carina; scrobal sulcus distinct but not deeply impressed, hypoepimeral area weakly reticulate but not markedly bulging; forewing recurrent veins ending at submarginal cells I and II or both at II; hindwing medial vein diverging before cu-a; propodeum largely smooth, only some areas striate; petiole dorsally with median longitudinal carina; female pygidial plate subtriangular.</p> <p> This new species can be distinguished from the type species, <i>O. hanedai</i> (Tsuneki, 1964), by the characters given in the key below.</p>Published as part of <i>Ma, Li, Li, Qiang & Chen, Xue-Xin, 2010, A rare genus Odontopsen Tsuneki in China (Hymenoptera: Apoidea: Crabronidae), with description of a new species, pp. 58-60 in Zootaxa 2359</i> on pages 58-59, DOI: <a href="http://zenodo.org/record/193611">10.5281/zenodo.193611</a>
Mimesa rhyssocephalica Ma, Li and Chen, sp. nov.
No full text2. <i>Mimesa rhyssocephalica</i> Ma, Li and Chen, sp. nov. <p>(Figs. 6–13)</p> <p> <b>Diagnosis:</b> This species can be distinguished from the similar <i>M. equestris</i> (Fabricius, 1804) and other species of the genus by the following combination of characters: upper frons, vertex, and gena with slender, longitudinal or transverse ridges; antennal segments IV–XII beneath with linear carinae in male; in female, free margin of clypeus with four denticular prominences medially, near apex with a transverse elongate oval tubercle medially; head and thorax with very dense, fine punctures; and interantennal tooth conspicuous.</p> <p> <b>Description</b>: <b>Female</b>. Body length 7.0– 7.5 mm. Black; mandible apically, gastral tergum I posteriorly, segment II, and pygidial area apically reddish brown; tibial spurs fulvous; tegula, and wing veins dark brown. Clypeus with sparse, silvery setae intermixed with some long brown setae; setae on frons, vertex, and thorax dense, brown, long, on propodeum, leg and petiole dense, silvery, long.</p> <p>Clypeus with dense, fine punctures that are slightly more than one diameter apart; free margin with four denticular prominences medially; near apex with transversely elongate oval tubercle medially, tubercle shiny, impunctate, longer than half length of clypeal apical prominences (Fig. 6); basal half of clypeal disk slightly elevated. Mandible bidentate apically. Interantennal tooth conspicuous (Fig. 6). Antenna slightly dull, segments III and IV slender, long, segments III–XII gradually thicker and shorter toward apex; segment III about 3 ×, segment IV about 1.6 ×, and segment XI about 0.6 × as long as wide apically, respectively. Upper frons with fine, contiguous punctures, and with dense, slender, longitudinal ridges; ocellar area and vertex with fine, contiguous punctures; vertex flat, vertex and gena with very dense, slender, transverse ridges; ocellar area slightly elevated. HW: HLD: HLF = 74: 30: 57; POD: OOD: OCD = 10: 15: 11.</p> <p>Anterior and middle portions of mesoscutum with fine, sparse punctures that are 1.5–2 × diameters apart; posterior portion of mesoscutum with fine, dense punctures that are less than one diameter apart. Scutellum with fine, sparse punctures. Metanotum with dense micro-punctures. Mesopleuron shiny, impunctate; lower portion with slender, dense, long, longitudinally oblique ridges posteriorly; upper mesopleuron with slender, longitudinal, contiguous rugae. Propodeal enclosure delimited by triangular, slender carina, with shallow depression, and slightly sturdy, sparse, longitudinal rugae, some rugae extending to posterior surface; posterior surface of propodeum with dense, slender, longitudinal, regular rugae; lateral surface of propodeum alutaceous, slightly shiny, without punctures or ridges. Both first and second recurrent veins of forewing ending in second submarginal cell. Legs normal, hind tibia with one or two rows of dark brown spines on outer surface, spines short, blunt on basal area, slightly longer and more acute on posterior surface.</p> <p>Dorsal surface of petiole moderately convex, with broad longitudinal carina medially; in dorsal view, basal width of petiole nearly equal to its apical width (Fig. 7); petiole with several slender, longitudinal carinae on its apical half laterally; ventral surface of petiole flat, without keel. PL: PW: LTI: WTI: HFL: HTL = 30: 7: 33: 35: 40: 48. Hind trochanter reaching end of petiole. Gastral segments shiny, impunctate; pygidial area elongate triangle, apex round, with dense, coarse punctures and setae (Fig. 8).</p> <p> <b>Male</b>: Body length 6.5–7.2 mm. Free margin of clypeus with two semicircular prominences medially, without tubercle near apex (Fig.9). Antenna slenderer than in female; length of antennal segments IV–XII nearly equal to each other; segments IV–XII beneath with long, linear carinae (Fig. 10); segment III about 2 ×, segment IV about 1.6 ×, and segment XII about 1.4 × as long as wide apically, respectively. HW: HLD: HLF = 64: 25: 46; POD: OOD: OCD = 7: 13: 8. Mesopleuron with sparse micro-punctures. Rugae on propodeum sturdier than in female. Hind tibia with one row of yellowish, slender, short spines on outer surface. PL: PW: LTI: WTI: HFL: HTL = 32: 7: 30: 27: 40: 45. Hind trochanter not reaching end of petiole. Male genitalia (Figs. 11–13).</p> <p> <b>Specimen examined: Holotype:</b> Ψ, China: Yunnan, Weixi, Lidiping, 3200m, 27°6'N 99°12'E, 3.viii.1984, coll. Jianguo Fan.</p> <p> <b>Paratypes</b>: 1 Ψ, China: Yunnan, Weixi, Lidiping, 3200m, 27°6'N 99°12'E, 3.viii.1984, coll. Jianguo Fan; 1 Ψ, China: Yunnan, Xiaozhongdian, 3200m, 27°35'N 99°48'E, 3.viii.1984, coll. Jianguo Fan; 1 Ψ, China: Yunnan, Zhongdian, Tuying village, 2900m, 27°47'N 99°43'E, 7.vii.1984, coll. Jianguo Fan; 2 ɗ, China: Yunnan, Weixi, Lidiping, 3200m, 27°6'N 99°12'E, 15.viii.1984, coll. Jianguo Fan.</p> <p>All specimens are deposited in the Institute of Zoology Chinese Academy of Sciences, Beijing, P. R. China.</p> <p> <b>Distribution:</b> China: Yunnan Provinces.</p> <p> <b>Etymology:</b> The name <i>rhyssocephalica</i> is derived from the Greek: <i>rhyss-</i> (= rugose) and <i>cephalos</i> (= head), referring to longitudinal or transverse slender ridges on the upper frons, vertex, and gena, one of the main recognition characters of this species.</p>Published as part of <i>Ma, Li, Li, Qiang & Chen, Xue-Xin, 2008, The genus Mimesa in China with descriptions of two new species (Hymenoptera: Apoidea: Crabronidae), pp. 19-29 in Zootaxa 1745</i> on pages 24-25, DOI: <a href="http://zenodo.org/record/181635">10.5281/zenodo.181635</a>
Discrete Morse flow for Ricci flow and Porous Media equation
No full textIn this paper, we study the discrete Morse flow for the Ricci flow on football, which is the 2-sphere with removed north and south poles and with the metric we have a weak approximated discrete Morse flow for the approximated Ricci flow and Porous media equation on any time intervals
Discrete Morse flow for Ricci flow and Porous Media equation
No full textIn this paper, we study the discrete Morse flow for the Ricci flow on football, which is the 2-sphere with removed north and south poles and with the metric we have a weak approximated discrete Morse flow for the approximated Ricci flow and Porous media equation on any time intervals
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