263,764 research outputs found
Iphidozercon altaicus Gwiazdowicz & Marchenko 2012, sp. n.
No full textIphidozercon altaicus sp. n. (Figs 1–4) <p>Description. Female (N = 3). Dorsum (Fig. 1). Dorsal shield oval, length 375–380 µm, width 230–250 µm distinct foveate sculpture throughout. 18 pairs of setae on podonotal part of shield and 14 pairs of setae on opisthonotal part of shield. All setae fine, smooth and pointed, length of 25–30 µm, except j1 (10 µm, inserted ventrally), and two antero-lateral setae s1, s2 (15 µm).</p> <p>Venter (Fig. 2) Tritosternum with trapezoidal base (25 µm) and finely pilose laciniae (35 µm). Sternal shield rectangular, 70 × 55 µm, setae st1–st3 smooth and pointed, length 10 µm. Metasternal setae st4 (10 µm) on soft membrane. Genital shield small and narrow (55 µm), spatulate posteriorly. Genital setae st5 (15 µm) outside the shield. Anal shield relatively large 60 µm long, 70 µm wide with para-anal setae (15 µm) and post-anal seta (20 µm). Narrow cribrum below post-anal seta. Sternal, genital and anal shields are unornamented. Peritremes ending anteriorly to coxae I, stigmata at level of coxae IV. Peritremal shields wide, with weak posterior lineate ornamentation. Opisthogastric integument behind coxae IV with one pair of oval metapodal plates, a pair of smaller plates near posterior ends of peritrematal shields. Opisthogastric setae JV1–JV5, ZV1–ZV2 15 µm long, others (R2–R4) approximately 20 µm.</p> <p>Gnathosoma. Hypostome with robust horn-like corniculi and four pairs of setae. Anterior seta h1 longest (30 µm), internal seta h3 (20 µm), palp coxal seta h4 (25 µm) shorter, external seta h2 (10 µm) shortest. Seven transverse rows of hypostomal denticles present, numbers of denticles per row (anterior to posterior) 12, 15, 17, 15, 17, 16, 13 (Fig. 3a). Chelicera typical of genus, fixed digit with three teeth, movable digit with two teeth (Fig. 3b), other details of chelicerae not visible in available specimens. Epistome with central prong longest, lateral prongs shorter, with denticulate outer margins (Fig. 3c).</p> <p>Legs and palps. Lengths of legs: I – 230 µm, II – 200 µm, III – 180 µm, IV – 210 µm. Setation of genua I–II–III–IV: 12–10–7–7 (Fig. 4a); tibiae 12–9–7–7 (Fig. 4b). Tarsus II to IV each with the dorsoproximal setae ad2 and pd2 short and straight (Fig 4c). Palp apotele 2-tined.</p> <p> Material examined: Holotype: Female. Russia, North-East of Altai Mountains, Teletskoe lake region, environs of Obogo village, in litter of <i>Betula pubescens – Populus tremula</i> forest, (51°30’48’’ N, 87°18’7’’ E, 900 m a.s.l.), 6 August 2007, leg. I.I. MARCHENKO. Paratypes: 2 females, North-East of Altai Mountains, Teletskoe lake region, environs of Obogo village, in litter of <i>Abies sibirica – Pinus sibirica</i> forest, (51°30’48’’N, 87°18’7’’E, 900 m a.s.l.), 6 August 2007, leg. I. I. MARCHENKO.</p> <p>Etymology. The name of this species reflects the fact that it was collected in the Altai Mountains.</p> <p> Differential diagnosis. <i>Iphidozercon altaicus</i> sp. n. is similar to <i>Iphidozercon foveatus</i> GWIAZDOWICZ et HALLIDAY, 2008. Both species have foveate sculpture on the dorsal shield and similar lengths of dorsal setae. The length of peritreme and the shape of genital shield is similar in both species. Nevertheless, many differences have been detected, such as shapes of the peritremal and anal shields. In <i>I. foveatus</i> the anal shield is narrow, while in <i>I. altaicus</i> it is wider than long. In <i>I. foveatus</i> the peritremal shield is wide, with tiny denticles on the internal side and in <i>I. altaicus</i> the shield is narrower and without denticles. In <i>I. foveatus</i> five pairs of smaller platelets bearing pores are located on the ventral side, in <i>I. altaicus</i> there are no such platelets. In <i>I. foveatus</i> the epistome has a central elongated prong ending in three denticles, but in <i>I. altaicus</i> the prong ends in spikes. In <i>I. foveatus</i> the movable digit has three teeth, but in <i>I. altaicus</i> it has two teeth.</p>Published as part of <i>Gwiazdowicz, D. J. & Marchenko, I. I., 2012, Two New Species Of Iphidozercon (Acari: Ascidae) With A Key To Females, pp. 41-52 in Acta Zoologica Academiae Scientiarum Hungaricae 58 (1)</i> on pages 42-44, DOI: <a href="http://zenodo.org/record/5732065">10.5281/zenodo.5732065</a>
Three new species of Halozercon (Acari: Mesostigmata: Zerconidae) from Altai Mountains in South Siberia (Russia)
No full textMarchenko, Irina I. (2019): Three new species of Halozercon (Acari: Mesostigmata: Zerconidae) from Altai Mountains in South Siberia (Russia). Zootaxa 4568 (3): 401-434, DOI: 10.11646/zootaxa.4568.3.
Halozercon barguzin Marchenko 2018, sp. nov.
No full textHalozercon barguzin sp. nov. Diagnosis. Podonotal shield extensively neotrichous; opisthonotal shield with indistinct reticulation; extensive neotrichy only in lateral regions, central region usually with four pairs of setae in J —row. First sternal platelet ornamented by small tubercles, entire in some specimens, or divided into two in median area, without lyrifissures; second pair of sternal platelets with lyrifissures iv3 and iv4. Vertex between j1 and z1 setae without pore-like structures; peritremes in adults and deutonymphs long and straight, reaching level of top spine of coxae II anteriorly; a pair of large subtriangular metapodal shields present in female. Adgenital gland pores gv2 multiple, dispersed over the surface: two openings of glands located on soft cuticle postero-laterad of genital shield, other openings (4–6) located on ventri-anal shield.Published as part of Marchenko, Irina I., 2018, A new species of Halozercon (Acari: Zerconidae) from South Siberia (Russia) with additional information on Halozercon karacholana Wiśniewski et al., 1992, pp. 347-370 in Zootaxa 4394 (3) on page 348, DOI: 10.11646/zootaxa.4394.3.2, http://zenodo.org/record/119975
Iphidozercon colliculatus Gwiazdowicz & Marchenko 2012, sp. n.
No full textIphidozercon colliculatus sp. n. (Figs 5–8) <p>Description. Female (N=10). Dorsum (Fig. 5). Dorsal shield oval, length 310–330 µm, width 210–230 µm distinct foveate sculpture throughout. 18 pairs of setae on podonotal part of shield and 14 pairs of setae on opisthonotal part of shield. All setae fine, smooth and pointed, length of 15–20 µm, except j1 (10 µm, inserted ventrally), and two antero-lateral setae s1, s2 (ca 10 µm).</p> <p>Venter (Fig. 6.) Tritosternum with trapezoidal base (30 µm) and finely pilose laciniae (45 µm). Sternal shield rectangular, 55–60 × 35–40 µm, setae st1–st3 smooth and pointed, length 10 µm. Metasternal setae st4 (10 µm) on soft membrane. Genital shield small and narrow (55–60 µm), spatulate posteriorly. Genital setae st5 (15 µm) outside the shield. Anal shield relatively large 55 µm long, 45 µm wide with para-anal setae (12–13 µm) and post-anal seta (15 µm). Narrow cribrum below post-anal seta. Sternal, genital and anal shields are unornamented. Stigmata located at level of coxae IV, peritremes extending anterior to coxae I, projecting for a short distance behind stigmata. Peritremal shields wide. Opisthogastric integument behind coxae IV with two pairs of oval metapodal plates (15 × 10 µm; 10 × 7–8 µm) and several pairs of very small (5–6 × 2–4 µm) platelets. Opisthogastric setae JV1–JV5, ZV1–ZV2 10–15 µm long.</p> <p> Gnathosoma. Hypostome with robust horn-like corniculi and four pairs of setae. Anterior seta h1 longest (30 µm), internal seta h3 (20 µm), palp coxal seta (25 µm) shorter, external seta h2 (10 µm) shortest. Seven transverse rows of hypostomal denticles present, numbers of denticles per row (anterior to posterior) 10, 14, 12, 12, 17, 12, 9 (Fig. 7 <i>a</i>). Chelicera typical of genus, fixed digit with four teeth, movable digit with two teeth (Fig. 7 <i>b</i>), other details of chelicerae not visible in available specimens. Epistome with central prong longest, its distal end club-like and denticulate, lateral prongs shorter, with denticulate outer margins (Fig. 7c).</p> <p>Legs and palps. Lengths of legs: I – 220–230 µm, II – 190–200 µm, III – 170–180 µm, IV – 200–210 µm. Setation of genua I–II–III–IV: 12–9–7–7 (Fig. 8b) av1 absent from genu II; tibiae 12–9–7–7 (Fig. 8c). Tarsus II to IV each with the dorsoproximal setae ad2 and pd2 short and straight (Fig 8d). Palp apotele 2-tined (Fig. 8a).</p> <p>Etymology. The name of this species reflects the colliculate ornamentation of the dorsal shield.</p> <p> Material examined: Holotype: Female. Russia, Khabarovsk Region, environs of Boytsovo village, in litter of <i>Pinus koraiensis</i> – broad-leaved forest (46°58’48’’ N, 134°19’57’’ E, 500 m a.s.l), 15 August 1991, leg. I. I. VOLONIKHINA. Paratypes: 9 females, same data as holotype.</p> <p> Differential diagnosis. <i>Iphidozercon colliculatus</i> sp. n. is similar to <i>I. australis</i> GWIAZDOWICZ et HALLIDAY, 2008. Both species have colliculate sculpture on the dorsal shields. In both species the length of the peritreme (including the short section extending beyond the stigma) is similar, as is the shape of the sternal and genital shields. Additionally, 9 setae (av1 absent) are located on genu II in both species. Nevertheless, many differences exist between both species. In <i>I. australis</i> dorsal setae J1–J3 are long and reach the bases of the following setae, while in <i>I. colliculatus</i> these setae are short and do not reach the bases of the following setae. In <i>I. colliculatus</i> the peritremal shield is wide and in <i>I. australis</i> the shield is narrower. In <i>I. australis</i> the epistome has a central elongated prong ending in three denticles, while in <i>I. colliculatus</i> it has many tiny denticles. In <i>I. australis</i> the movable digit has three, while in <i>I. colliculatus</i> it has two teeth.</p>Published as part of <i>Gwiazdowicz, D. J. & Marchenko, I. I., 2012, Two New Species Of Iphidozercon (Acari: Ascidae) With A Key To Females, pp. 41-52 in Acta Zoologica Academiae Scientiarum Hungaricae 58 (1)</i> on pages 46-48, DOI: <a href="http://zenodo.org/record/5732065">10.5281/zenodo.5732065</a>
Espai i identitat en l'obra de Jordi Pere Cerdà. Una geografia literària cerdaniana
No full textL'obra de l'autor nord-català Jordi Pere Cerdà (1920-2011) teixeix una cartografia literària que abasta tota dimensió espacial -real, imaginada i ficcional. Les prospeccions que assagen els seus texts es fonen en el medi natural i rural, canten a l'amor, als veïns i als éssers fantàstics del folklore català, es comprometen amb els refugiats encarant-se a tota frontera i, també, a tot abisme interior i exterior que oprimesca l'ésser. El mapatge cognitiu i literari que crea Cerdà sobrepassa qualsevol obstacle per construir espais oberts i possibles, en comunió amb l'altre. Partint d'una aproximació teòrica geocrítica, aquest treball d'investigació aprofundeix en diverses nocions sobre l'espacialitat lligades a un context convuls, ple de transformacions a nivell socioeconòmic, polític, cultural i lingüístic, el qual determinarà la vida d'un autor i d'un territori transfronterer com el de la Cerdanya i la Catalunya del Nord. En definitiva, la rica experiència vital de Jordi Pere Cerdà ens permet reflexionar sobre les relacions que vulguem establir entre els individus i amb el nostre hàbitat natural i cultural, a fi d'esdevenir membres actius que participen de la transformació dels espais que configuren les nostres identitats.The work of the North Catalan author Jordi Pere Cerdà (1920-2011) weaves a literary cartography which reaches all spatial dimensions -real, imagined and fictional. The prospections proved by their texts merge with the natural and rural environment, sing to love, neighbours and the fantastic beings of the Catalan folklore. Such prospections also commit themselves with the refugees facing every frontier and, also, facing all interior and exterior abyss that oppresses the being. The cognitive and literary mapping created by Cerdà overcomes any obstacle to construct opened and possible spaces, in communion with the other. Based on the theoretical approach called geocriticism, this research study delves into various notions about spatiality linked to a convulsive context, full of transformations at a socioeconomic, political, cultural and linguistic level; these transformations will determine the life of an author and a cross-border territory such as Cerdagne and Northern Catalonia. In short, the rich experience of Jordi Pere Cerdà allows us to reflect on the relationships we want to establish between individuals, as well as between human groups and our natural and cultural habitat, in order to become active members that participate in the transformation of the spaces that make up our identities.Programa de Doctorat en Llengües Aplicades, Literatura i Traducci
Adaptive Marchenko internal multiple attenuation
No full textCuriosity regarding what we cannot see has always driven research. Science has helped us to uncover many of those hidden secrets. In particular, geophysics has helped us to image the inside of the Earth. By sending a seismic signal into the Earth and recording the signal that comes back, geophysicists can characterize the layers of the subsurface. Nowadays, geophysics is used for many purposes, for example, the localization of fossil fuels, the characterization of the subsurface for the construction of wind farms and the evaluation of reservoirs for geothermal energy. In order to decrease the risk and cost involved in these activities, we need images of the subsurface that are as accurate as possible. These images can only be obtained if we fully understand the propagation of the seismic signal in the subsurface. A long-standing problem in geophysical imaging is the presence of internal multiple reflections. When imaging the subsurface, we assume that the signal only reflects once when there is a contrast in velocity and/or density (for example, when changing from sand to rock). However, in reality, the signal can reflect many times inside the subsurface before being recorded at the surface. When treating the arrivals that have reflected many times as arrivals that have only reflected once, we incorrectly image the subsurface and create ghost reflectors that do not exist. This problem is particularly strong in geological settings that have a complex structure with many strong velocity and/or density contrasts above an area of interest. This may happen, for example, when there is a reservoir of oil below a thick stratified salt layer. In such cases, the image of the area of interest is unreliable due to the presence of many ghost reflectors. Therefore, we have to use knowledge of wave propagation to predict and attenuate the internal multiples in the data prior to imaging.In this thesis, I further develop the data-driven and wave-equation-based Marchenko method to make it suitable for the attenuation of internal multiples in seismic field data. In addition, I evaluate the performance of suitable methods by applying them to field datasets recorded in different geological settings. I start this evaluation by demonstrating that what we call the conventional Marchenko method is perhaps not the most suitable Marchenko method for the application to field data. I develop an alternative Marchenko method instead: the adaptive double-focusing method. I show that this method indeed produces improved results compared to the conventional Marchenko method when applying it to a line of 2D data of the Santos Basin, Brazil. Since the 2D results show promise, I continue with the extension to 3D applications. I first identify the key acquisition parameters that affect the result of our Marchenko method on 3D synthetic data and conclude that the limited crossline aperture and the coarse sail line spacing have the strongest effect on the quality of the result. Based on this evaluation, I interpolate the sail line spacing on 3D field data acquired in the Santos Basin and use the adaptive double-focusing method to predict and subtract internal multiples. I conclude that 3D Marchenko internal multiple attenuation seems to be sufficiently robust for the application to narrow azimuth streamer data in a deep marine setting, provided that there is sufficient aperture in the crossline direction and that the sail lines are interpolated. In addition, the adaptive double-focusing method is suitable for the attenuation of internal multiples generated by a complex overburden and for simultaneously redatuming to a level below this overburden. Next, I modify the adaptive double-focusing method to obtain an adaptive double dereverberation method that is suitable when only aiming to attenuate internal multiples generated in an overburden without redatuming. Moreover, this method does not require a velocity model. I apply this method to a 2D line of data acquired in the very shallow Arabian Gulf. Also, I assess how to meet the data requirements for the Marchenko method in shallow water environments (e.g., the removal of surface-related multiples, the deconvolution of the source signature) and demonstrate that the state-of-the-art Robust Estimation of Primaries by Sparse Inversion (R-EPSI) method is capable of producing the correct input data for the Marchenko method in such settings. Subsequently, I discuss the role of the adaptive filter in the application of the Marchenko method to field data. I argue that developments in seismic data processing allow us to predict internal multiples with more accuracy, such that only a conservative adaptive filter is needed to correct for the unavoidable minor amplitude and phase discrepancies between the internal multiples in the data and the predicted internal multiples. I demonstrate this by using a conservative adaptive filter to subtract internal multiples that were predicted by applying an adaptive Marchenko multiple elimination method to a 2D line of field data acquired in the Norwegian North Sea. Finally, based on the results presented in this thesis, I conclude that the Marchenko method is an effective, data-driven and robust method for the prediction of internal multiples in marine seismic data. Different Marchenko methods are suitable for different purposes. There are two key elements for the successful application of a Marchenko method to field data: 1) the acquisition geometry needs to be sufficiently dense and 2) a careful processing workflow needs to be constructed that accounts for the specifics of the geological setting at hand, with significant emphasis on amplitude and phase preservation.Applied Geophysics and Petrophysic
Els llibres d'il·lustració infantil i juvenil en l'Educació Artística. Un cas concret a partir de l’autora Olga de Dios
No full textTreball Final de Grau en Mestre o Mestra d'Educació Primària (Pla de 2018). Codi: MP1840. Curs acadèmic: 2021/2022El treball de fi de grau que aneu a veure a continuació, és un projecte que consisteix en com es poden
treballar a les aules de primària els llibres de l’autora i il·lustradora Olga de Dios. Tractant de treballar
el llibre com a objecte artístic a nivell elemental. A més, de presentar a l’autora i il·lustradora, donarla a conèixer i veure els valors que transmet, també llegiríem quatre de les seues obres a l’aula com
són: “Leotolda”, “En familia”, “Rana de Tres Ojos”, i “Pájaro Amarillo”. Tot açò sumat a la
realització d’un quadern de classe on es colorejaria alguns dels seus personatges de les obres seguint
pautes a nivell curricular. Realitzaríem també una eixida a la biblioteca municipal, on a banda de
rebre una educació no formal, ens facilitaria una mica el fet d’endinsar-nos al món de la il·lustració
infantil, on allí dins, el professional encarregat ens guiarà pels llibres que hi haurà a la biblioteca. I,
per a concloure, elaboraríem un llibre creat per l’alumnat on seguint unes pautes establertes per Olga
de Dios al seu llibre “Leotolda” buscaríem fer una retroalimentació intentant contactar amb ella.
D’aquesta manera tancaríem el cicle que vam començar donant-la a conèixer com a escriptora i
il·lustradora, i exploraríem on està el límit de la creativitat del propi alumnat.The final degree project you are going to see below is a project that looks at how books by author and
illustrator Olga de Dios can be worked on in primary school classrooms. Considering the book as an
artistic object at an elementary level. Besides presenting the author and illustrator, introducing her,
and seeing the values she transmits, we would also read four of her works in the classroom, such as:
"Leotolda”, "In the family", "Three-Eyed Frog", and "Yellow Bird.". All this, in addition to the
creation of a class notebook in which some of his characters from her work would be colored
following guidelines at the curricular level. We would also go out to the local library, where in
addition to receiving a non-formal education, it would make it a little easier for us to enter the world
of children's illustration, where inside, the professional in charge will guide us through the books
which will be in the library. And, to conclude, we would make a book created by the students, where
following some guidelines established by Olga de Dios in her book "Leotolda" we would look for
feedback by trying to contact her. In this way, we would close the cycle that we started by presenting
her as an author and illustrator, and we would explore where the limit of creativity of the students
themselves is
Les biblioteques universitàries i el suport a la recerca
No full textThe European Higher Education Area and the European Research Area are currently two key objectives for university learning, teaching and research in all European universities. University libraries must meet the challenges by offering the best library services to the academic community. In drafting the second strategic plan, Rebiun (Network of University Libraries) gathered comments and suggestions from professionals in Spanish university libraries. This article presents the reflections and suggestions contributed by the author regarding the support services that university libraries could offer for university research.L'espai europeu d'educació superior i l'espai europeu d'investigació són actualment dos objectius clau per a l'aprenentatge, la docència i la recerca de totes les universitats europees. Les biblioteques universitàries han de contribuir a aquests reptes, oferint els millors serveis bibliotecaris a la comunitat acadèmica. En la fase d'elaboració del seu segon Pla estratègic, la REBIUN (Red de Bibliotecas Universtarias) va recollir reflexions i suggeriments de diferents professionals de les biblioteques universitàries de l'Estat espanyol. En l¿article següent es presenten les reflexions i els suggeriments aportats per l'autora sobre el suport que les biblioteques universitàries poden oferir a la recerca universitària
Halozercon capitaneus Marchenko 2019, sp. n.
No full textHalozercon capitaneus sp. n. urn:lsid: zoobank.org: act: 7EBB868D-25CB-440C-BD4B-27EF7CF8AD3D Diagnosis. Vertex with two pairs of setae: j1 and z1, with pair of glands ip1 inserted in middle between j1 and z1 setae. Surface of podonotal shield ornamented by small tubercles in anterior and lateral regions, median region with indistinct reticulation. All podonotal setae smooth. Opisthonotal shield with linear reticulation in median region, with small tubercles in lateral regions. Median region with 14–17 slightly serrated setae of J series. First sternal platelets divided, with pair of lyrifissures iv2. Metapodal shields absent. Setae Jv1 located in anterior margin of ventri-anal shields or in some specimens in soft cuticle between genital and ventri-anal shields. Peritremes reaching level of posterior 1/3 part of coxae II. Ventri-anal shield entire. Adult chelicera without sexual dimorphism. Description. Female (Figs 82–86, 88–98, n=3) Dorsal idiosoma. Idiosoma suboval, 580–595 long and 377–390 wide. Anterior margin of the podonotum curved ventrally to form a vertex with two pairs of setae at arisen bases: j1 (12–15) stout, smooth and z1 setae (10– 12) smooth, thorn-like; with pair of glands ip1 inserted in middle between j1 and z1 setae. Podonotal shield strongly neotrichous with about 63–66 setae on each side, including marginal r setae; ornamented by small tubercles in anterior and lateral regions, median region with indistinct reticulation (Figs 82, 88–89). All podonotal setae smooth, 12–15 long. Four pairs of pore-like structures (glands) po1–po4 located in podonotum, glands po1 visible in ventral side. Opisthonotal shield linear reticulated in median region, with small tubercles in lateral regions; with four pairs of pore-like structures (glands) Po1–Po4 and with 48–53 neotrichous setae on each side, including marginal R setae. Median region with 14–17 slightly serrated setae of J series (Fig. 90), lateral region with setae of Z, S series inserted closely, smooth or pilose (Fig. 91), all setae arrangement asymmetrically, 15–20 long. All dorsal setae surrounded by enlarged basal rings. Marginal setae of r–R series neotrichous, elongated, pilose, 25–30 long, inserted on high tubercles. Ventral idiosoma. (Figs 83, 92–98). Base of tritosternum 30–35 long and 20–22 wide, pilose laciniae free from each other along entire length, 60–65 long. Presternal (jugular) platelets irregular shape, weakly sclerotised, with pair of St1 setae (23–25). First pair of sternal platelets divided, suboval, 25–35 long and 13–18 wide, with pair of St2 setae (20–22) and pair of lyrifissures iv2 (Figs 83, 92–95). Area between jugular and first sternal platelets ornamented by small rounded tubercles. Second pair of sternal platelets divided, suboval, 30–33 long and 12–15 wide, with two pairs of setae St3, St4 (15–17) and two pairs of lyrifissures iv3, iv4 (Figs 92–95). Genital shield stocky form, 58–67 long, 48–52 wide, irregularly-shaped, with individual shape in each specimen; expanded anteriorly and posteriorly; anterior margin with fine folding; with genital setae St5 (15–16) and lyrifissures iv5 on genital shield (Fig. 95). Subtriangular membrane surrounds the genital shield. Endo-, exopodal and metapodal shields absent. Adgenital gland pores gv2 are multiple, dispersed over the surface: one gland opening located in soft cuticle postero-laterad of genital shield, another 4–6 openings located in ventri-anal shield. Setae Jv1 located in anterior margin of ventri-anal shields or in some specimens in soft cuticle between genital and ventri-anal shields. Peritrematal shields fused anteriorly forming a vertex and fused with dorsal shield laterally; strongly sclerotised, postero-lateral ends are drawn back; ornamented with festoon reticulation along entire length. Five pairs of pore-like structures inserted in peritrematal shield: gp1, gp2 and ip1–ip3. Peritremes straight or slightly curved, 123–127 long, reaching level of posterior 1/3 part of coxae II; with internal cell structure (Fig. 96). Ventrianal shield entire, broad (Figs 93, 97–98), 190–200 long and 325–335 wide, fused to opisthonotal shield; with festoon reticulation, with 8–9 pairs of smooth opisthogastric setae (15–20). Opisthonotal shield curved on ventral side, with 5–6 pilose setae (23–25). Anal area with simple pre-anal (13–15) and post-anal setae (17); anal opening 37 long; with two lyrifissure on each valve; cribrum located posteriorly of post-anal seta. Pair of glands gv3 located antero-laterad of para-anal setae. Gnathosoma. (Figs 84–86). Fixed digit of chelicera 60–61 long, with five teeth in addition to apical hook and leaf-shaped pilus dentilis (Fig. 84); movable digit the same length with three teeth in additional to apical hook. Chelicera with long dorsal seta, lateral (antiaxial) and dorsal (paraxial) lyrifissures; with arthrodial corona. Epistome subtriangular, with irregularly serrated edges and smooth pointed median projection (Fig. 85). Corniculi 30–31 long and 14–15 wide. Internal malae slightly longer than corniculi, with complex three-layer structure (Fig. 86). Deutosternal groove with 7–8 transverse denticulate rows. The posterior pair of lateral transverse lines archshaped, with large denticles, located at the level of pc setae. Setae h1–h3 smooth: h1 (45–47) longest, seta h2 (15– 17) shorter than h3 (25–30); pc (20–22) serrated. Palpal trochanter with seta al1 long and pilose in the distal third; with seta al2 short and smooth; palp genu with setae al1 and al2 pilose in distal third, palp apotele two-tined. Legs. Lengths: I 380–385, II 315–325, III 31 5 –325, IV 375–385 µm. Chaetotaxy of legs I–IV: coxae 2, 2, 2, 1; trochanters 6 (1 1/3 1), 5 (1 1/3 0), 5 (1 1/3 0), 5 (1 1/3 0), femora 13 (2 5/4 2), 11 (2 5/3 1), 6 (1 4/1 0), 6 (1 4/1 0); genua 13 (2 6/3 2), 12 (2 6/2 2), 10 (2 4/2 2), 10 (2 5/2 1); tibiae 14 (2 6/4 2), 10 (2 4/2 2), 9 (2 3/2 2), 10 (2 4/2 2); tarsi 49, 18 (3 7/5 3), 18 (3 7/5 3), 18 (3 7/5 3). All legs with pair of sclerotised claws and pulvillus with five lobes. Pretarsus of legs II–IV with ambulacral stalk, legs I with sessile claws. Coxae I–IV grouped closely together vertically; coxae I split on dorsal side, coxae III–IV with recesses on anterolateral side. Coxae II with antero-dorsal large sharp spine. Male. (87, 99–101, n=2). Dorsal idiosoma. Dorsal shield suboval shape, 515–575 long and 310–360 wide. Ornamentation and chaetotaxy similar to that of female. Ventral idiosoma. Tritosternum as in female. Pair weakly sclerotised presternal (jugular) platelets with pair of St1 setae (Figs 87, 99–101). First sternal platelet entire, with pair of St2 setae, with line ornamentation, 30–32 long and 50–55 wide. Second sternal platelet entire, subcordate shape, with indistinct reticulation; with two pairs of setae St3, St4 and one pair of lyrifissures iv 3 in antero-lateral margins; 40–42 long on median line and 48–55 wide at level of St3 setae; surrounds the genital opening. Genital opening located at level of coxae III; with a pair of eugenital setae, covering by two platelets (Figs 100–101), with pair of genital sclerites. Third sternal platelet triangular, divided in three fragments, with St5 setae and pair of iv5 lyrifissures inserted in soft cuticle. Endo-, exopodal and metapodal shields absent. Peritrematal shields similar to that female, with five pairs of pore-like structures: gp1, gp2, i1 —ip3. Peritremes similar to those of female, 115–125 long. Arch of vertex with two dorsal setae: smooth, stout j1 and smooth, thorn-like z1. Ventri-anal shield broad, entire, with festoon reticulation (Figs 87, 99), 165–180 long and 275–310 wide; with 7–10 pairs of opisthogastric smooth setae and 4–6 opisthonotal slightly pilose setae. Adgenital gland pores gv2 are multiple, dispersed over the surface: one pair of glands located in soft cuticle posteriorly of coxae IV, other 3–5 openings located in ventri-anal shield. Anal area as in female. Pair of glands gv3 located antero-laterad of para-anal setae. Gnathosoma. Fixed digit of chelicera 55 long, with five teeth in addition to apical hook and leaf-shaped pilus dentilis. Movable digit of chelicera the same length as fixed digit, tridentate in addition to apical hook. Male chelicera lacking spermatodactyl, without sexual dimorphism. Epistome, corniculi, internal malae, hypostomal and palpal structures as in female. Legs. Lengths: I 325–340, II 270–285, III 270–285, IV 315–340 µm. Chaetotaxy and morphology of legs as in female. Leg II without sexual dimorphism. Material examined. Holotype female, Russia, Altaiskii krai, North-Western Altai Mountains, Tigeretskii Range, Tigerekskii Nature Reserve, 1300 m a.s.l., 51 ̊04ʹ N, 83 ̊02ʹ E, Betula tortuosa forest, in litter, 18 June 2017, leg. I.I. Marchenko. Paratypes: 2 females, same data as holotype; 1male, same data as holotype; 1 male, Tigerekskii Nature Reserve, environs of Tigerek village, Kozyr Mt., 500 m a.s.l., 51 ̊04ʹ N, 83 ̊02ʹ E, in litter, 24 June 2017, leg. I.I. Marchenko. Etymology. The species is named capitaneus, as captain of team, due to its large size compared with other species of Halozercon found in Tigerekskii Nature Reserve. Remarks. Adults of Halozercon capitaneus are most similar to H. karacholana Wiśniewski et al. 1992, but differ from those having larger size of idiosoma; ornamentation of dorsal shields—median regions of podonotal and opisthonotal shields with smooth reticulation; pore-like structures Po4 (glands) located in posterior part of opisthonotum at dorsal side; all podonotal setae smooth except marginal; opisthonotal setae of J series slightly serrated (which is visible only at 1000 magnification). Adults of Halozercon karacholana having smaller size of idiosoma; median regions of podonotal and opisthonotal shields with tubercles and festoon network, with tubercle or festoon patterns around J5 setae and po 3 glands (Figs 102–103); Po4 glands located in posterior part of opisthonotum at ventral side; all dorsal setae pilose (Fig. 104).Published as part of Marchenko, Irina I., 2019, Three new species of Halozercon (Acari: Mesostigmata: Zerconidae) from Altai Mountains in South Siberia (Russia), pp. 401-434 in Zootaxa 4568 (3) on pages 423-431, DOI: 10.11646/zootaxa.4568.3.1, http://zenodo.org/record/260150
Halozercon Wisniewski 1992
No full textGenus Halozercon Wiśniewski et al. 1992 Halozercon Wiśniewski et al. 1992: 180. Halozercon.— Marchenko, 2018: 347. Type species: Halozercon karacholana Wiśniewski et al., 1992, by original designation. Note. Diagnosis of Halozercon was given in a previous article by Marchenko (2018).Published as part of Marchenko, Irina I., 2019, Three new species of Halozercon (Acari: Mesostigmata: Zerconidae) from Altai Mountains in South Siberia (Russia), pp. 401-434 in Zootaxa 4568 (3) on page 402, DOI: 10.11646/zootaxa.4568.3.1, http://zenodo.org/record/260150
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