1,460 research outputs found
Festschrift for Seppo Koponen
No full textVink, Cor J., Jäeger, Peter, Jennings, John T., Marusik, Yuri M. (2014): Festschrift for Seppo Koponen. Zootaxa 3894 (1): 1-2, DOI: 10.11646/zootaxa.3894.1.1, URL: http://dx.doi.org/10.11646/zootaxa.3894.1.
Zodariellum mongolicum Marusik & Koponen 2001
No full textZodariellum mongolicum Marusik & Koponen, 2001 Fig. 12B Zodariellum mongolicum Marusik & Koponen, 2001: 45, figs 3–5, 8–9, 17–18, 26 (♂). Zodarion mongolicum: Jocqué & Henrard 2015: 21. Zodariellum mongolicum: Zamani & Marusik 2021: 185. Zodarion apertum Zhang & Zhang, 2019: 69, figs 1A–D, 2A–E, 3A–E (♂ ♀). Syn. n. Comments. Accounting the original descriptions, we hereby synonymize Z. apertum Zhang & Zhang, 2019 syn. n. (described from Xinjiang, northwestern China) with Z. mongolicum (described from Mongolia), as no noticeable differences can be detected between the illustrated male palps (cf. Zhang & Zhang 2019: fig. 2C and Marusik & Koponen 2001: figs 17–18). Distribution. Mongolia and northwestern China (Xinjiang) (Fig. 12B).Published as part of Zamani, Alireza & Marusik, Yuri M., 2022, New taxonomic considerations in Zodariellum Andreeva & Tyshchenko, 1968 (Araneae: Zodariidae), with notes on the presence of cymbial diverticulum in different zodariid genera, pp. 161-177 in Zootaxa 5178 (2) on pages 170-171, DOI: 10.11646/zootaxa.5178.2.3, http://zenodo.org/record/702223
Influence of low amounts of nanostructured silica and calcium carbonate fillers on the large-area dielectric breakdown performance of bi-axially oriented polypropylene
No full textInfluence of low amounts (1.0-2.0wt-%) of nanostructured silica and calcium carbonate fillers on the large area dielectric breakdown performance of bi-axially oriented polypropylene (BOPP) is analyzed. A multi-breakdown measurement method based on the self-healing breakdown capability of metallized film is utilized for the breakdown characterization in order to cover relatively large total film areas, thus leading to results of higher relevance from the practical point-of-view. The dispersion and distribution qualities of filler particles at the nanoscale are evaluated with transmission electron microscopy (TEM) imaging. Weibull statistical analysis suggests that the breakdown distribution homogeneity can be improved with both the filler types. The 1.0wt-% silica-BOPP composite also shows a shift of the weakest points towards higher dielectric strength in comparison to the neat BOPP. However, with increasing filler content, new failure modes are introduced into the nanocomposites, hence decreasing the overall breakdown performance in the >5% breakdown probability region in comparison to the un-filled reference BOPP film
New data on spiders (Aranei) from the Maritime Province, Russian Far East
No full textMarusik, Yuri M., Koponen, Seppo (2000): New data on spiders (Aranei) from the Maritime Province, Russian Far East. Arthropoda Selecta 9 (1): 55-68, DOI: 10.5281/zenodo.82271
Новый вид рода Macrargus (Araneae, Linyphiidae, Micronetinae) с северо-востока Украины и переописание двух близких видов
No full textMacrargus sumyensis Gnelitsa et Koponen, sp. n. is described from the North-East of Ukraine. Two closely related species of the genus Macrargus Dahl, 1886, Macrargus boreus Holm, 1968 and M. multesimus (O.-P. Cambridge, 1875), are redescribed and illustrated in detail.С северо-востока Украины описан Macrargus sumyensis Gnelitsa and Koponen, sp. n. Переописаны и детально проиллюстрированы два близких вида рода Macrargus Dahl, 1886: M. boreus Holm, 1968 и M. multesimus (O.-P. Cambridge, 1875).We thank two anonymous referees for their critical comments and corrections of the manuscript
Gulocosa Marusik, Omelko & Koponen, 2015, gen. n.
No full text<i>Gulocosa</i> gen. n. <p> <b>Type species</b>: <i>Gulocosa eskovi</i> <b>sp. n.</b></p> <p> <b>Etymology</b>. We continue the tradition of naming wolf spider genera by combining the name of a predatory vertebrate as the first element and ending with –cosa (or -osa) (cf. Cameron 2005; Marusik & Kovblyuk 2011), typical for lycosid genera (e.g. <i>Arctos - Arctosa</i>, <i>Mustela - Mustelicosa</i>, <i>Lynx - Lynxosa</i>, <i>Pantera pardus - Pardosa</i>). The generic name is derived from the scientific name of the wolverine (<i>Gulo gulo</i>) and ends with -cosa. The gender is masculine.</p> <p> <b>Diagnosis</b>. <i>Gulocosa</i> <b>gen. n.</b> differs from most <i>Acantholycosa</i> species (exception <i>A. baltoroi</i> (Caporiacco, 1935)), all <i>Sibirocosa</i> and <i>Melecosa</i> <b>gen. n.</b> by having 4 pairs of ventral spines on leg I (Fig. 3). <i>Acantolycosa baltoroi</i> differs from <i>G. eskovi</i> <b>sp. n.</b> by having no epigynal fovea, longer embolus and shape of fovea. <i>Gulocosa</i> <b>gen. n</b>. differs from <i>Mongolicosa</i>, which have 4 pairs of ventral spines on tibia I. The new genus can be distinguished by a thick embolus (Figs 9, 14, 16, 23‒27), high apical arm of the tegular apophysis (Figs 7‒8, 13, 22), septal stem, in which the anterior part extends the epigynal fovea (Figs 28, 30); thin embolus (Figs 51‒53); apical arm of tegular apophysis not larger than basal arm (Fig. 51); entire septal stem within epigynal fovea (Figs 54‒55) in <i>Mongolicosa</i> and undivided apical pocket (one apical pocket in <i>Gulocosa</i> <b>gen. n.</b> but two hoods or two apical pockets in <i>Mongolicosa</i>).</p> <p> Male palps in the new genus differ from similar <i>Sibirocosa</i> by the tegular apophysis with a well-developed apical arm (<i>Aa</i>; reduced in <i>Sibirocosa</i>) and short and wide (as long as wide) embolus (<i>Em</i>; longer than wide in <i>Sibirocosa</i>) (Figs 8, 10). Females of the new genus are most similar to those of <i>Mongolicosa glupovi</i> Marusik, Azarkina & Koponen, 2004 (Marusik <i>et al.</i> 2004: 136, figs 201, 208‒212) by having a similar septum (<i>Se</i>). These two species can be separated by the apical pocket (undivided in <i>G. eskovi</i> <b>sp. n.</b> and with two hoods in <i>M. glupovi</i>) and the shape of the fovea (wider than long in the new species, and as long as wide in <i>M. glupovi</i>) (Figs 28–31, Marusik <i>et al.</i> 2004: 136, figs 208‒212). Additionally, the anterior 1/3 of the septal stem of <i>Gulocosa</i> <b>gen. n.</b> lies outside the fovea, whereas in <i>M. glupovi</i>, almost the entire stem is within the fovea (Figs 28–30).</p> <p> <b>Description</b>. See species description.</p> <p> <b>Relationships</b>. Diagnostic characters of the Holarctic Pardosinae have a mosaic distribution in the matrix (Table 1), therefore it is difficult to make judgments about relationships of the new genus based on morphological characters. A molecular phylogenetic analysis, which was beyond the scope of this study, may resolve this in the future. Because the embolus shape and entire embolic division are the most stable (uniform) characters within each Pardosinae genus, it is possible that <i>Gulocosa</i> <b>gen. n.</b> is most closely related to <i>Sibirocosa</i> because of the very robust (wide and thick) embolus, huge terminal apophysis (longer than embolus) and partly reduced palea. Epigynes in the two genera (<i>Gulocosa</i> <b>gen. n.</b> and <i>Sibirocosa</i>) also display similarities: thin receptacles with relatively small heads; large and deep fovea that can partially hide the receptacles in dorsal view; presence of one anterior pocket; touching lips in basal part (Figs 28‒31).</p> <p> <b>Composition</b>. Only the type species.</p> <p> <b>Type material</b>. Holotype ♂ and paratypes 25 ♂, 5 ♀ (ZMMU), Russia, Khabarovsk Province, Ko Mt, alpine belt, 500‒1800 m, 47°06'26"N 136°33'08"E, 22‒ 24.06.2013 (M.M. Omelko).</p> <p> <b>Etymology</b>. The specific name is a patronym in honour of our friend and colleague, Kirill Yu. Eskov, a wellknown arachnologist, palaeontologist and novelist who has made important contributions to arachnology.</p> <p> <b>Diagnosis</b>. See genus diagnosis.</p> <p> <b>Description</b>. Male. Total length 6.40‒8.15. Carapace 3.15‒3.85 long, 2.70‒2.75 wide; carapace length/femur I ratio 1.19‒1.26. Colouration in alcohol: carapace dark brown, almost uniformly coloured, with almost black cephalic region and lighter median band (Fig. 2). Dorsal side of abdomen blackish with yellowish heart mark and gray spots. Femora and patellae brown, with annulations; metatarsi and tarsi I and II yellow; metatarsi and tarsi III and IV light brown. (Figs 2–3). Living specimens with greater colour contrast (Fig. 58); carapace with yellowish hairs along lateral margins; abdomen with whitish spots formed by white hairs; legs, especially I and II, covered with white hairs. Leg I spination: femur I 3 d, 2p, 1r; patella 1p, 1r; tibia 2d, 1p, 1r, 4- 4v; metatarsus 2p, 2r, 2- 2v. Length of leg joints as shown in Table 1.</p> <p> Palp as in Figs 7‒9, 13‒16, 22‒27. Cymbium blackish with brown upper part bearing 2 claws. Tegular apophysis large with long apical arm (longer than basal arm). Palea partly reduced and haematodocha partly unhidden; palea with small projection (<i>Pp</i>) at terminal part and small lamellate wart (<i>Pw</i>) near tip of embolus. Embolus short and extremely wide, in apical view—semicircular; embolic base almost coincides with anterior edge of the bulbus; terminal apophysis (<i>Ta</i>) longer than embolus in ventral view, terminal part relatively thin, much thinner than embolus.</p> <p>Leg segment length: small / large males.</p> <p>Female. Total length 8.35‒10.1. Carapace 3.7‒4.05 long, 2.7‒3.2 wide; carapace length/femur I ratio 1.24‒1.48. Colouration in alcohol: median band and postcephalic round spot distinct, as well as submarginal light broken stripe (Fig. 1). Legs brown, with more distinct annulations than in males. Live specimen as in Fig. 57. Spination of leg I: femur 3d, 2p, 2r; patella 1p, 1r; tibia1p, 4- 4v; metatarsus 2p, 2 r, 2- 2v.</p> <p>Leg segment length: small / large females.</p> <p>Epigyne as in Figs 28‒31. Fovea large and deep, with two round parts divided by septum; basal arms touching one anther; septum distinct, its base almost as wide as entire septum length; upper part of stem lies outside of fovea; apical pocket undivided; receptacles short with poorly developed heads.</p> <p> <b>Comments.</b> Species inhabits open scree at 500‒1800 meters in mixed forest and alpine zones. <b>Distribution</b>. Known from the type locality only (Fig. 59).</p>Published as part of <i>Marusik, Yuri M., Omelko, Mikhail M. & Koponen, Seppo, 2015, A survey of East Palaearctic Lycosidae (Araneae). 11. Two new genera from the Acantholycosa complex, pp. 252-264 in Zootaxa 3985 (2)</i> on pages 253-258, DOI: 10.11646/zootaxa.3985.2.4, <a href="http://zenodo.org/record/253999">http://zenodo.org/record/253999</a>
Evippa apsheronica Marusik, Guseinov & Koponen 2003
No full textEvippa apsheronica Marusik, Guseinov et Koponen, 2003 Брагина, 2012 (Pirata cereipes); Пономарёв, Брагина, 2015. МатериаΛ. 2♂, берег оз. Аксуат, 19.05.2014.Published as part of Ponomarev, A. V., Bragina, T. M. & Shmatko, V. Yu., 2017, New data on spiders (Aranei) of the Naurzum State Natural Reserve (Kostanay Region, Kazakhstan), pp. 3-10 in Caucasian Entomological Bulletin 13 (1) on page 8, DOI: 10.23885/1814-3326-2017-13-1-3-10, http://zenodo.org/record/814554
First description of the male of the easternmost Harpactea species, H. parthica (Araneae: Dysderidae)
No full textZamani, Alireza, Marusik, Yuri M., Koponen, Seppo (2017): First description of the male of the easternmost Harpactea species, H. parthica (Araneae: Dysderidae). Zootaxa 4238 (2): 258-262, DOI: https://doi.org/10.11646/zootaxa.4238.2.
Taulukko saamelaiskielten *-(e̮)hče̮-frekventatiiviverbeistä
No full textLiite artikkeliin:
Koponen, E., & Kuokkala, J. (2021) Kantasaamen *-(e̮)hče̮-frekventatiivijohtimen edustuksesta nykyisissä saamelaiskielissä. Teoksessa Hämäläinen, M., Partanen, N., & Alnajjar, K. (toim) Multilingual Facilitation
A redescription of the ant mimicking spider Myrmecium gounellei (Araneae: Corinnidae, Castianeirinae), with notes on the genus
No full textMarusik, Yuri M., Omelko, Mikhail M., Koponen, Seppo (2015): A redescription of the ant mimicking spider Myrmecium gounellei (Araneae: Corinnidae, Castianeirinae), with notes on the genus. Zootaxa 3985 (2): 296-300, DOI: 10.11646/zootaxa.3985.2.
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