10,223 research outputs found
Chileporter Cepeda 2018, new genus
No full textChileporter Cepeda, new genus Type species. Chileporter huemeri Cepeda, new species. Diagnosis. (Fig. 1–5). Chileporter n. gen. can be separated from other yponomeutids by morphological characters of the male and female genitalia. The male differs by the absence of the cornuti and by the unique shape of the uncus, socii, and gnathos, and the female differs by the form of the corpus bursae and signum. Also, the forewing lacks a pterostigma and has an open discal cell, and the hindwing has veins M 3 +CuA 1 not at a right angle with M 1, and vein A 3 absent. This genus is likely in a clade with the yponomeutid genera Zelleria, Kessleria, and Paradoxus, because of similarities in both male genitalia (valva simple, saccus slender) and female genitalia (ductus bursae elongated, signum usually present). The morphological features that distinguish Chileporter n. gen. from these closely related genera are presented comparatively in Table 1. Description. Adult. 11–13.5 mm wingspan (n = 20). Labial palpi held obliquely, third segment subequal in length to first. Forewing lanceolate with acute apex; pterostigma absent; discal cell open; Sc does not reach costa; R 3, R 4 and R 5 sub-parallel. Hindwing with termen acute; Sc strongly sclerotized; M 1 and M 2 widely separated towards termen; M 3 + CuA 1 parallel to CuA 2, not arranged at right angle with M 1; A 3 absent. Second abdominal sternum with small sclerotized central bar. Synapomorphic presence of spinelike setae on the abdominal tergum (Sohn et al. 2013). Larva. Seta V1 on the larval head is elongated. In the last stage larvae, the formula of SV-setae on abdominal segments A1, 2, 7, 8, 9 corresponds to 2: 3: 2: 1: 1; A8 with SV uni-setose; in A9, seta D1 is not so close to D2; SV uni-setose; integument with star-shaped micro-processes. Pupa. Front with small central incision. Clypeus trapezoidal, wider than long. Labium less than a third the length of proboscis. Antennae slightly longer than forewing. Male genitalia. (Fig. 6–11). Uncus wide, anterior margin rounded, tuba analis with broad base and sclerotized. Socii elongate, sub-triangular, covered with long setae with bifid apex. Tegumen wider than long. Gnathos rounded with strong marginal spinose processes. Saccus slender and moderately short. Valva simple, longer than wide; costa arched in the middle and cucullus oriented upwards. Sacculus not developed. Phallus slender, elongated and acutely lanceolate towards apex. Pleural lobe on A8 enlarged with broadly rounded margin. Female genitalia. (Fig. 12–15). Papillae anales simple. Apophyses anteriores with widely open dorsal and ventral arms, apophyses posteriores slender. Lamella post-vaginalis with central incision and covered with abundant setae. Antrum short and sclerotized. Ductus bursae elongated, completely clothed with spiniform circular processes. Corpus bursae ovoid. Signum digitiform, strongly sclerotized, with serrate margins; located on dorsal area of corpus bursae. Host. Maytenus boaria Molina (Celastraceae). Etymology. The name combines the country of Chile with the surname of the eminent Chilean naturalist Carlos Emilio Porter Mosso (1867–1942). The noun is male in gender. Remarks. The host is a widely distributed species of Celastraceae in Chile and South America. It should be noted that other genera of Yponomeutidae also have Celastraceae hosts, are generally widely distributed in the Palearctic region. Otherwise, most botanical records for Yponomeutidae include the families Celastraceae, Rosaceae, Saxifragaceae, Pinaceae, and Betulaceae (Gershenson and Ulenberg 1998; Lewis and Sohn 2015).Published as part of Cepeda, Danilo E., 2018, New genus and species of Yponomeutidae (Lepidoptera: Yponomeutoidea) associated with Maytenus boaria Molina (Celastraceae) from Chile, with descriptions of immature stages and natural history observations, pp. 1-12 in Insecta Mundi 647 on pages 2-3, DOI: 10.5281/zenodo.370822
Fotografía UDBC036369
No full textFotografía del ejemplar Cepeda, M. 5, determinado como Heisteria acuminat
Fotografía UDBC017769
No full textFotografía del ejemplar Cepeda, M. 18, determinado como Piper suratanum en el año 202
Passadena mistralae Cepeda 2018, new species
No full textPassadena mistralae Cepeda, new species Diagnosis. (Fig. 1–6). Larger than other species of Passadena, in both sexes. Forewing 11–15 mm (n = 12). Forewing whitish to ash gray, antemedial line an interrupted, dark band. Cell with two dark spots. Postmedial line a band dark zigzagging toward the distal third. Abdomen with tergites 2–4 covered with dense golden-yellow scales. Phallus with two cornuti and abundant microspines in vesica. Signum with groups of acute, elongated spines. This new species can be differentiated from Passadena flavidorsella (Ragonot) and Passadena argentina Neunzig and Goodson by the following characters: forewing pattern, phallus with two cornuti, corpus bursae dorsally covered by several spines, and signum with groups of elongated spines acute. Passadena mistralae, n. sp., is included in this genus based on the following features: haustellum well developed and ocelli present; forewing with 11 veins, R 2 from cell, R 3+4 and R 5 stalked for more 1/2 their lengths, M 1 from bellow upper angle of cell, M 2 and M 3 connate, CuA 1 from lower angle of cell, CuA 2 from before lower angle of cell, male without costal fold or sex-scaling and raised scales; hindwing with 8 veins, Sc+R 1 and Rs fully separated, M 1 not fused with Rs at base, M 2 and M 3 stalked for over 1/2 their lengths, CuA 1 fused at base with M 2 + M 3, CuA 2 from slightly before lower angle of cell; eighth abdominal segment of male with pair of ventrolateral scale tufts. All these features are in agreement with the redescription proposed by Heinrich (1956) and with the description of P. argentina Neunzig and Goodson (1992). Description of female holotype. Forewing 13.0 mm, right wing. Head with frons, vertex and occiput covered by elongated whitish-grey scales, few scattered dark scales. Antenna filiform, with scape and flagellomeres dorsally covered by whitish scales. Ventral flagellomeres finely and densely ciliate. Labial palpus porrect, twice as long as maximum diameter of eye, covered by elongated whitish scales, with few scattered black scales; third segment elongated (Fig. 5–6). Maxillary palpus simple, with elongated whitish scales pointing upwards. Thorax, tegulae and scutellum covered with whitish scales, with few scattered black scales. Forewing (Fig. 1–4) whitish ash gray; antemedial line interrupted by longitudinal band of black scales; cell with two black postmedial spots at Rs and M1; postmedial line dark and zigzagging; termen with six black marginal spots. Hindwing broad and triangular, opaque whitish, M2+3 and CuA1 divergent in more than half of their lengths; termen sub–fringe with scales dark and fringe with whitish elongated scales. Abdomen with tergites 2–4 covered with dense golden-yellow scales. Female genitalia. (Fig. 7–12). Papillae anales simple. Eighth segment sclerotized. Apophyses anteriores and posteriores subequal in length. Ductus bursae short and broad, with patch of dense micro-spines near ostium bursae. Corpus bursae with dorsum partially sclerotized by spines fused at their bases, with some spines isolated; signum formed by three groups of elongated acute spines, with one group larger than other two. Ductus seminalis attached to corpus bursae near junction of ductus bursae and corpus bursae. Male. Forewing 11–13 mm (n = 2). As described in female, except scape dorsally covered with dark-brown scales; labial palpus porrect, covered with dark-brown scales, also with a few scattered whitish scales, without tufts basally, with third segment small and acute; maxillary palpus covered with elongated brown scales pointing upwards; thorax, tegulae and scutellum covered with ash-gray scales, also with few scattered whitish scales. Male genitalia. (Fig. 13–17). Uncus triangular with wide base covered by an abundant short micropilosity. Gnathos narrow, with pointed apex. Juxta U-shaped, with setiferous lateral arms. Valva longer than wide, costa thickened to tip of valva; fibula present, longer than wide; lateral U-shaped structure posterior to fibula, pointed dorsally, rounded ventrally. Sacculus wide and sclerotized. Vinculum longer than wide, saccus posteriorly subtruncate. Phallus thick with two cornuti subequal in length, vesica armed with several acute microspines. Eighth sternum broad, rounded. Eighth tergum narrow, arch-shaped. Host plant. Unknown. Intraspecific variation. Specimens vary in the color of the forewing (whitish to ash gray). In male genitalia there are slight differences in the shape of the uncus, U-shaped structure of the valva, and the valva itself. The female genitalia vary in the quantity of spines forming the signum. Etymology. The name honors Chilean Gabriela Mistral (1889–1957), the first Latin American woman awarded the Nobel Prize in Literature. Distribution. Present in two localities of Huasco Province, Region of Atacama. According to Morrone (2015), this distribution belongs in the Central Chilean Sub-region, Province of Coquimbo. Remarks. This new species includes a lateral U-shaped structure posterior to the fibula, pointed dorsally, rounded ventrally, that could be analogous to the “clasper” of P. flavidorsella Ragonot, the type species (see Heinrich 1956). Passadena mistralae n. sp. is morphologically very similar to its Argentinean congener, especially in the form of the uncus, gnathos, valva, costa, microspines of the phallus and spines on the corpus bursae. Material examined. 12 specimens. Holotype ♀, Chile, Huasco province, Caleta Los Bronces 28°38′S. 71°16′W., 200 m., 21.IX.2017, J.F. Campodonico leg. UV trap (MEUC); 1 Paratype ♂ Chile, Huasco province, Caleta Los Bronces 28°38′S. 71°16′W., 200 m., 21.IX.2017, J.F. Campodonico leg. UV trap (MEUC); 1 Paratype ♂ Chile, Tamarico, Huasco province, 28°21′S. 71°46′W., 568 m., 22.IX.2017, J.F. Campodonico leg. UV trap (MEUC); 2 Paratypes ♀ Chile, Huasco province, Caleta Los Bronces 28°38′S. 71°16′W., 200 m., 21.IX.2017, J.F. Campodonico leg. UV trap (MEUC); 2 Paratypes ♀ Chile, Tamarico, Huasco province, 28°21′S. 71°46′W., 568 m., 22.IX.2017, J.F. Campodonico leg. UV trap (MEUC); 3 Paratypes ♀ Chile, Tamarico, Huasco prov., 28°21′S. 71°46′W., 568 m., 22.IX.2017, J.F. Campodonico leg. UV trap (USNM) 2 Paratypes ♀ Chile, Huasco province, Caleta Los Bronces 28°38′S. 71°16′W., 200 m., 21.IX.2017, J.F. Campodonico leg. UV trap (ZMUC).Published as part of Cepeda, Danilo E., 2018, Contribution to the knowledge of Chilean Phycitinae (Lepidoptera: Pyralidae): new species of Passadena Hulst, 1900, and Ragonotia Grote, 1888, from northern Chile, pp. 1-12 in Insecta Mundi 654 on pages 2-3, DOI: 10.5281/zenodo.370972
CAJA 291 - LEGAJO XX - SIGNATURA 04
No full textNota remitida por D. M. Yranzo Benedito a D. Rafael Rodríguez de Cepeda, comunicándole la celebración en Zaragoza de un Congreso de la Exportación. Incluye folleto de dicho Congreso.Yranzo Benedito, M.; Rodríguez De Cepeda, R. (1908). Nota remitida por D. M. Yranzo Benedito a D. Rafael Rodríguez de Cepeda, comunicándole la celebración en Zaragoza de un Congreso de la Exportación. Incluye folleto de dicho Congreso. Real Sociedad Económica de Amigos del País de Valencia. https://riunet.upv.es/handle/10251/26551Importación Masiv
Ragonotia campodonicoi Cepeda 2018, new species
No full text<i>Ragonotia campodonicoi</i> Cepeda, new species <p> <b>Diagnosis.</b> (Fig. 18–19). Large in both sexes, relative to other <i>Ragonotia</i> species. Forewing 11–13 mm (<i>n</i> = 3). Forewing ash gray. Labial palpus large and porrect in both sexes. Valva narrow, with elongated fibula; saccus wider than long. Ductus bursae subequal in length to corpus bursae. This new species can be differentiated from <i>Ragonotia dotalis</i> (Ragonot) and <i>Ragonotia confluenciana</i> Neunzig and Goodson by the following characters: forewing pattern, narrowed valva, elongated fibula, saccus wider than long and ductus bursae subequal in length to corpus bursae.</p> <p> <i>Ragonotia campodonicoi</i>, n. sp., is included in this genus based on the following features: male antennae with longitudinal rows of rather long sensillae ventrally; labial palpus large and porrect in both sexes; 8th abdominal segment of male without a pair of ventrolateral scale tufts; male genitalia with uncus subtriangular, gnathos with strong apical hook, juxta V-shaped, valva simple and phallus sclerotized, slender and without cornuti; female genitalia with papillae anales with many long setae, ductus bursae sclerotized near junction with corpus bursae, corpus bursae membranous without signum, and ductus seminalis attached to ductus bursae. All these features are in agreement with the description proposed by Neunzig and Goodson (1992).</p> <p> <b>Description of female holotype.</b> Forewing 13.0 mm. Head with frons, vertex and occiput covered by elongate brown scales. Antenna filiform, with scape and dorsal flagellomeres covered by whitish-grey scales. Flagellomeres finely and densely ciliate ventrally. Labial palpus large, porrect, three times as long as maximum diameter of eye, covered by elongated whitish-grey scales, also with a few scattered brown scales. Thorax, tegulae and scutellum covered with brown scales, a few whitish scales scattered. Forewing whitish ash gray, with few black scales scattered. Hindwing broad and triangular, opaque whitish, M2+3 and CuA1 divergent in less than half of their lengths; termen fringed with whitish elongate scales.</p> <p> <b>Female genitalia.</b> (Fig. 20–21). Papillae anales simple, covered with abundant long setae. Eighth segment weakly sclerotized. Apophyses anteriores and posteriores subequal in length. Ductus bursae elongate and strongly sclerotized, subequal in length to corpus bursae. Corpus bursae membranous, without signum. Ductus seminalis attached to ductus bursae near sclerotized area of ductus bursae.</p> <p> <b>Male</b>. Forewing 13.0 mm (<i>n</i> = 1). As described in female, except ventral antenna with longitudinal rows of long sensillae, dorsal scape covered with dark-brown scales. Labial palpus porrect, covered with dark-brown scales, without tufts basally. Thorax, tegulae and scutellum covered with brown scales.</p> <p> <b>Male genitalia.</b> (Fig. 22–26). Uncus longer than wide, with wide base, subtriangular. Gnathos strongly sclerotized, with apical hook recurved. Juxta broadly sclerotized, V-shaped plate. Valva longer than wide, with sclerotized costal band narrow and not reaching tip of valva; fibula elongated beyond the valva saccular margin, slender and digitiform; sacculus wider than long. Vinculum longer than wide, saccus posteriorly rounded. Phallus slender, narrowing toward apex, finely scobinate. Eighth abdominal segment of male without a pair of ventrolateral scale tufts. Eighth sternum wider than long, rounded apically. Eighth tergum small and arch-shaped.</p> <p> <b>Host plant.</b> Unknown.</p> <p> <b>Intraspecific variation.</b> Subtle variability in color of the forewing (whitish to ash gray). In female genitalia, there is subtle variation in the length of the apophyses anteriores.</p> <p> <b>Etymology.</b> This species is named after Juan Francisco Campodonico (University of Chile), who collected the type series of this new taxon.</p> <p> <b>Distribution.</b> Present at one locality in the Huasco Province, Region of Atacama. According to Morrone (2015), this distribution belongs in the Central Chilean Sub-region, Province of Coquimbo.</p> <p> <b>Remarks.</b> <i>Ragonotia campodonicoi</i> n. sp. is morphologically very similar to its Argentinean congener, especially in the form of the uncus, gnathos, phallus, ductus bursae and corpus bursae.</p> <p> <b>Material examined.</b> 3 specimens. <b>Holotype</b> ♀, Chile, Huasco province, Caleta Los Bronces, 28°38′S, 71°16′W, 200 m., 21.IX.2017, J.F. Campodonico leg., UV trap (MEUC). <b>Paratypes: 1</b> ♂ and <b>1</b> ♀, Chile, Huasco prov., Caleta Los Bronces, 28°38′S, 71°16′W, 200 m., 21.IX.2017, J.F. Campodonico leg., UV trap (MEUC, ZMUC).</p>Published as part of <i>Cepeda, Danilo E., 2018, Contribution to the knowledge of Chilean Phycitinae (Lepidoptera: Pyralidae): new species of Passadena Hulst, 1900, and Ragonotia Grote, 1888, from northern Chile, pp. 1-12 in Insecta Mundi 654</i> on pages 3-4, DOI: <a href="http://zenodo.org/record/3709729">10.5281/zenodo.3709729</a>
Los procesos de pensamiento de los estudiantes al usar los manipulativos Algeblocks y la Politabla Dreyfous en álgebra elemental
No full textHow to cite:
Villafañe-Cepeda, W. & Fernández, L. M. (2004). Los procesos de pensamiento de los estudiantes al usar los manipulativos Algeblocks y la Politabla Dreyfous en álgebra elemental. Pedagogía, 37(1), 99-122.Cómo citar:
Villafañe-Cepeda, W. & Fernández, L. M. (2004). Los procesos de pensamiento de los estudiantes al usar los manipulativos Algeblocks y la Politabla Dreyfous en álgebra elemental. Pedagogía, 37(1), 99-122
Todos estábamos a la espera de Álvaro Cepeda Samudio edición a cargo de Jacques Gilard
No full textThe text contains a review on the critical edition of the story book Todos estábamos a la espera, of the Colombian writer Alvaro Cepeda Samudio, realised by Jacques Gilard and published by Cooperación Editorial, Madrid, 2005. Gilard presents this critical edition in six sections, thus: 1. Introduction, with an intellectual biography of Cepeda Samudio, who lives between the media, the narrative and the cinema, 2. Chronology, that emphasizes the fundamental moments in the life of the author, in relation with the great facts of the History, the world and the Literature, 3. The stories, nine published in the original edition and three stories added by Gilard, 4. Footnotes, with pertinent explanations, mainly, for a reader different from the Colombian, 5. Workcards, and 6. Bibliography commented on Cepeda and its book of stories
Insights into DNA catalysis from structural and functional studies of the 8-17 DNAzyme
No full textDNAzymes (deoxyribozymes) are single-stranded DNA molecules endowed with catalytic activity, obtained by in vitro selection. In the past 25 years, dozens of DNAzymes have been identified and employed for applicative purposes, yet our knowledge of the structural and mechanistic basis of DNA catalysis remains very limited. The RNA-cleaving 8-17 DNAzyme, which depends on divalent metal ions for function, is possibly the most studied catalytic DNA in terms of mechanism. It is very efficient, implying that it adopts a combination of distinct catalytic strategies, but until recently it was uncertain which strategies are at play and how they are implemented. Recently, however, new functional studies and the attainment of high-resolution X-ray structures of an 8-17 construct, have offered a great opportunity for a more detailed understanding of its mechanism. This review examines the functional information gathered on 8-17, in the light of the available crystal structures, pointing out the congruences and possible inconsistencies between the functional and structural data. We will analyze separately three aspects of the DNAzyme function: the structural requirements for catalysis, the role of metal ions and the influence of pH on activity. Ultimately, we will contrast the experimental data with a model for the 8-17 mechanism proposed in the crystallographic study, whereby one specific G residue (G14) acts as a general base and a metal-coordinated water molecule acts as a general acid. Throughout this analysis we will signal the most outstanding mechanistic issues that remain to be addressed, with implications for the broader field of DNA catalysis
El sentido trágico de La casa grande de Álvaro Cepeda Samudio
No full textEste trabajo es un estudio comparativo entre La casa grande de Álvaro Cepeda Samudio y Orestíada de Esquilo, el cual procede de un interés por explorar las posibles relaciones entre tales tragedias y novela, desde un análisis de estos géneros literarios y pasando por la indagación respecto del carácter mítico de ambas obras y de los personajes arquetípicos representados tanto en la novela de Cepeda Samudio como en la trilogía de Esquilo.Magíster en Estudios LiterariosMaestrí
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