129,878 research outputs found
Cardiocondyla opistopsis Seifert 2003
No full text<i>Cardiocondyla opistopsis</i> Seifert 2003 [type investigation] <p>This taxon has been described from Kuwait. Investigated were the holotype worker and one paratype worker labelled “ KUWAIT: Burgan, 1988 W.Büttiker ” and 3 worker paratypes labelled “ KUWAIT: 1985”, all in SMN Görlitz.</p> <p> <b>All material examined</b>. Numeric phenotypical data were available for two samples with four workers. For details see supplementary information SI1, SI2. This material originated from Kuwait (2 samples).</p> <p> <b>Geographic range</b>. The species is only known from the type locality.</p> <p> <b>Diagnosis</b>: --Worker (Tab. 3, Figs. 62–65, key). Rather large, CS 553 µm. Head moderately elongated, CL/CW 1.171. Postocular index lower than in any species considered here, PoOc/CL 0.316. Hind margin of vertex rather straight or weakly concave. Scape rather long, SL/CS 0.825. Eye very large, EYE/CS 0.280. Median third of hind margin of head slightly concave. Frons moderately broad (FRS/CS 0.241), frontal carinae strongly converging immediately caudal of FRS level (FL/FR 1.122); dorsal extension of scape joint capsule in dorsal aspect strongly surpassing the frontal carinae laterad. Dorsal profile of promesonotum and of propodeum convex with a rather shallow metanotal depression (MGr/CS 2.15 %). Spines very short and blunt, triangular (SP/CS 0.073), their assumed axis in profile deviating by about 50° from longitudinal axis of mesosoma, their bases more approached (SPBA/CS 0.234). Petiole very low, lower than wide (PeW/CS 0.283, PeH/CS 0.271); in profile with a more distinct peduncle and a semicircular node with the anterior slope appearing less steep than the caudal slope; node in dorsal aspect as wide as long and almost circular. Postpetiole narrower than in any related species and but not very low (PpW/CS 0.463, PpH/CS 0.259), in dorsal view not heard-shaped, with feebly concave anterior margin and convex sides; postpetiolar sternite completely flat. Clypeus rather smooth, with 4–5 weak longitudinal carinulae. Frontal laminae rather smooth, very delicately microreticulate-carinulate. Vertex with numerous bicoronate foveolae of 17–19 µm diameter, the margins of foveolae only rarely breached by microrugulae running partially or entirely through the foveolae, foveolar interspaces about as wide as foveolar diameter, glabrous, with scattered fragments of fine cross-branched structures or microcarinulae. A narrow median stripe on vertex perfectly smooth, paramedian vertex only in its anterior part weakly longitudinally microcarinulate. Despite of microsculpture all parts of mesosoma and waist appear in overall impression rather shiny. Dorsal promesonotum irregularly microreticulate-carinulate, with scattered suggestions of foveolae. Whole lateral mesosoma reticulate but moderately shiny. Region of the metapleural gland bulla with 2–4 short and weak longitudinal carinae. Propodeum and petiole microreticulate; Postpetiole more shiny, with very delicate microreticulum. Pubescence on gaster tergites moderately long and moderately dense, PLG/CS 5.13 %, sqPDG 5.34. Whole body dark to medium brown.</p> <p> <b>Taxonomic comments and clustering results</b>. As a combination of extremely small postocular index, petiolar height and postpetiolar width <i>Cardiocondyla opistopsis</i> is unmistakable.</p> <p> <b>Biology</b>. Unknown</p>Published as part of <i>Seifert, Bernhard, 2023, A revision of the Palaearctic species of the ant genus Cardiocondyla Emery 1869 (Hymenoptera: Formicidae), pp. 1-64 in Zootaxa 5274 (1)</i> on page 43, DOI: 10.11646/zootaxa.5274.1.1, <a href="http://zenodo.org/record/7888156">http://zenodo.org/record/7888156</a>
Cardiocondyla littoralis Seifert 2003
No full text<i>Cardiocondyla littoralis</i> Seifert 2003 [types investigated] <p>This species has been described from SE Kazakhstan. Investigated were the holotype worker and 11 worker paratypes, all labelled “KAZ: 46.41.57 N, 80.35.00 E, 358 m, W-Ufer des Sassy Kol, Lössboden, versalzt, hart, selten überschwemmt leg. Seifert 2001.08.07 -1”, SMN Goerlitz.</p> <p> <b>All material examined</b>. Numeric phenotypical data were taken in five workers of the type sample from Kazakhstan. For details see supplementary information SI1, SI2..</p> <p> <b>Geographic range</b>. Only known from the type locality (46.6992 °N, 80.5833 °E, 356 m).</p> <p> <b>Diagnosis</b>: --Worker (Tab. 2, Figs. 26–29, key). Small, CS 486 µm. Head moderately elongated, CL/CW 1.167. Postocular distance much larger than in <i>C. ulianini</i> and <i>C. caspiense</i> <b>n. sp.</b> PoOc/CL 0.442. Scape shorter, SL/CS 0.792. Eye rather large, EYE/CS 0.249. Occiput in dorsal aspect with evenly rounded corners, its median third straight or weakly concave. Frons moderately broad (FRS/CS 0.241), frontal carinae slightly converging immediately caudal of FRS level (FL/FR 1.044). Dorsal profile of promesonotum and of propodeum convex with a well-developed metanotal depression (MGr/CS 3.70 %). Propodeal spines very short (SP/CS 0.087, more triangular but with sharp tips), their axis in profile deviating by about 48° from longitudinal axis of mesosoma, their bases much approached (SPBA/CS 0.223). Petiole narrow and lower than in <i>C. ulianini</i> but still higher than wide (PeW/CS 0.274, PeH/ CS 0.306), its node in dorsal aspect as long as wide, tapering frontad; in lateral aspect its frontodorsal profile not concave, more directed caudad (about 50° relative to ventral profile). Postpetiole much narrower than in <i>C. ulianini</i>, less than twice as wide as high (PpW/CS 0.500, PpH/CS 0.277), in dorsal view heard-shaped, with a concave anterior margin and convex sides; postpetiolar sternite with a shallow anteromedian bulge. Clypeus between the level of the paramedian 1st order setae, smooth, its anteromedian margin straight or weakly concave. Frontal laminae and a small area posterior of them finely and densely longitudinally rugulose. Anteromedian vertex glabrous and whole vertex without longitudinal microsculpture, in overall impression similar to situation in <i>C. ulianini</i>, foveolar interspaces glabrous and on the average as wide as foveolar diameter (dFOV 13–16), the interspaces with scattered very fine stickman-like fragments of a microreticulum, internal foveolar surface often with longitudinal carinulae (Fig. 29). Dorsal mesosoma in overall impression shiny; dorsal promesonotum with shallow foveolae of 9–16 µm diameter, interspaces clearly wider than foveolar diameter; dorsal propodeum shiny but very finely microrugulose-reticulate. Caudolateral pronotum, ventrolateral mesonotum, mesopleuron, and propodeum below spiracular level finely reticulate. Lateral metapleuron with 2–4 curved longitudinal carinae. Waist segments almost smooth and shining. First gaster tergite glabrous. Pubescence on whole body rather long but dilute, PLG/CS 6.90 %, sqPDG 4.63. Color of head, mesosoma, femora, and gaster dark brown; waist segments sometimes slightly lighter with yellowish tinge.</p> <p> <b>Taxonomic comments and clustering results</b>. The taxonomic separation of <i>Cardiocondyla littoralis</i> from those of sympatric <i>C. ulianini</i> and <i>C. caspiense</i> <b>n. sp.</b> is supported by a PCA considering the characters PoOc/CL, Pew/CS, PpH/CS and PLG/CS (Fig. 136). The type specimens clearly differed from syntopic <i>ulianini</i> by the much larger PoOc/CL, larger PeW/PpW, a lower petiole with a less steep anterior slope, and by shorter spines. <i>C. littoralis</i> shows some similarity to the W Palaearctic <i>gallilaeica</i> from which it differs by the much larger PoOc/CL and PeW/PpW, the more excavated dorsofrontal postpetiolar margin, the almost straight median third of occipital margin, and the wider frons with more curved frontal carinae.</p> <p> <b>Biology.</b> The workers were collected when foraging on the surface of a salty loess soil with very sparse vegetation near the margin of a lake in a semidesert.</p>Published as part of <i>Seifert, Bernhard, 2023, A revision of the Palaearctic species of the ant genus Cardiocondyla Emery 1869 (Hymenoptera: Formicidae), pp. 1-64 in Zootaxa 5274 (1)</i> on page 34, DOI: 10.11646/zootaxa.5274.1.1, <a href="http://zenodo.org/record/7888156">http://zenodo.org/record/7888156</a>
Formica anatolica Seifert & Schultz 2009, sp. n.
No full textFormica anatolica sp. n. Derivatio nominis: from the distribution in Anatolia. Type material examined: Holotype worker plus 4 worker paratypes labelled "TUR: 37.348° N, 34.360° E Hal-kapinar-32 rkm SE, Aydos Dagi 1600-1800 m, A. Schulz 1997.05.08-214" and " Holotype Formica anatolica Seifert & Schultz " / " Paratype Formica anatolica Seifert & Schultz "; SMN Görlitz. Material examined: 13 samples with 54 workers from Anatolia (Turkey) were subject to a numeric analysis of 18 characters (Fig. 18). For details, see Appendix, as digital supplementary material to this article, at the journal's web pages. Description of worker (Tab. 2, Fig. 8): large Servifor-mica species (CS 1.401 mm), head and scape significantly shorter than in F. rufibarbis (CL / CW1.4 1.110, SL / CS1.4 1.031) and eye distinctly larger (EYE / CS1.4 0.303). Petiole very wide (PEW / CS1.4 0.484). Clypeus with sharp median keel and fine longitudinal microcarinulae. Frontal triangle finely transversely rippled and with 55 - 80 short pubescence hairs. Eyes with microsetae of 8 - 10 μ m maximum length. Total mean of unilateral setae numbers on different body parts predicted for a specimen with CS = 1.4 mm: pronotum 8.9, mesonotum 4.2, propodeum plus dorsolateral metapleuron 0.1, petiole dorsal of spiracle 0.8, flexor profile of hind tibia 1.4, underside of head 1.6 (only species of the F. rufibarbis group usually having gular setae). Posterior margin of head normally without setae. Ventral coxae and gaster tergites with long setae. Dorsal mesonotum in profile broadly convex. Metanotal depression rather deep. Propodeal dome in profile obtuse-angled or rounded, the basal profile sometimes linear or slightly concave. Dorsal crest of petiole in frontal view rounded, sometimes (especially in larger specimens) with a straight or slightly excavated median portion. Petiole scale in lateral aspect thin, with convex anterior and more straight posterior profile. Gaster with transverse microripples of small distance (RipD 4.6 μ m) and covered by dense silvery pubescence (sqPDG 3.4). Pubescence on head, meso-soma and petiole dense. Posterior vertex, often dorsal pro-mesonotum, coxae and all appendages dark brown, gaster always dark brown. Other body parts reddish. In overall impression, this species appears relatively dark with remarkable contrasts between brown and reddish parts, especially on genae. Comments on taxonomy: Well separable from any other Palaearctic species. The very clear distinction from the other two setose species, F. rufibarbis and F. tarimica sp. n., has already been presented above (Fig. 15). The short head, short scape, large eye and pilosity on underside of head suggest certain affinities to the F. cinerea group but the very wide petiole scale and overall pilosity pattern indicate an allocation to the F. rufibarbis group. 13 samples with 54 workers were subject to a numeric analysis of 18 characters. Turkey: Halkapinar (type), 8.V.1997 [37.348° N, 34.36° E]; Bakirdagi, 10.V.1997 [38.217° N, 35.917° E]; Belören (3 samples), 4.VI.1993 [37.211° N, 32.546° E]; Cankurtaran, 10.V.2003 [38.155° N, 31.239° E]; Carmadi (2 samples), 31. V.1993 [37.823° N, 35.102° E]; Imrasan Gecidi (2 samples), 3.V.1997 [37.133° N, 31.800° E]; Seydisehir, 5.VI.1993 [37.350° N, 31.750° E]; Sylemaniye, 5.VI.1993 [37.100° N, 31.750° E]; Ücpinnar, 4.VI.1993 [37.126° N, 32.250°]. Distribution and biology: So far only known from south-central Anatolia in the region of the Taurus Mountains (Toros Daglari). Occurring there at elevations between 1300 and 1900 m. Most remarkable habitat selection: so far only found in woodland stands with Abies, Juniperus, Quercus and other deciduous tree species, occasionally interspersed with grassland patches.Published as part of Seifert, B. & Schultz, R., 2009, A taxonomic revision of the Formica rufibarbis Fabricius, 1793 group (Hymenoptera: Formicidae)., pp. 255-272 in Myrmecologische Nachrichten 12 on page 2
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Cardiocondyla rugulosa Seifert 2003
No full text<i>Cardiocondyla rugulosa</i> Seifert 2003 [type investigation] <p>This taxon has been described from Yemen. Investigated was the holotype worker labelled “ Yemen, Sana’a, 1991.05, leg. A.van Harten ”, SMN Görlitz.</p> <p> <b>All material examined</b>. Only the holotype specimen was available for examination. For details see supplementary information SI1, SI2. This material originated from Yemen (1 sample).</p> <p> <b>Geographic range</b>. So far only known from the type locality Sana’a (15.37°N, 44.19°E, 2265 m).</p> <p> <b>Diagnosis</b>: --Worker (Tab. 3, Figs. 66–69, key). Rather large, CS 576 µm. Head moderately elongated, CL/CW 1.168. Postocular index low, PoOc/CL 0.344. Median third of hind margin of head notably concave. Scape rather short, SL/CS 0.789. Eye large, EYE/CS 0.267. Frons moderately broad (FRS/CS 0.249), frontal carinae slightly converging immediately caudal of FRS level (FL/FR 1.027). Mesosoma in lateral view characteristic: dorsal profile of promesonotum only weakly convex, metanotal depression shallow (MGr/CS 2.1 %) and dorsal profile of propodeum more strongly convex and more strongly sloping down to spine base than in related species. Spines short (SP/CS 0.101), acute and weakly erected, their axis in profile deviating by about 33° from longitudinal axis of mesosoma, their bases more approached (SPBA/CS 0.240). Petiole distinctly higher than wide (PeW/CS 0.276, PeH/CS 0.329), in profile with a short peduncle, a rather straight to weakly convex anterior face and an ample node with the anterior slope less steep than the caudal slope, petiole in dorsal view with elongated node that gradually merges with the anterior peduncle. Postpetiole wide (PpW/CS 0.537, PpW /PeW 1.95, PpH/CS 0.286), in dorsal view suggestively heard-shaped, with a concave anterior margin and convex sides; postpetiolar sternite completely flat. Clypeus and frontal laminae finely longitudinally rugulose. Whole vertex densely and finely longitudinally rugulose, the numerous foveolae of 14–18 µm diameter are not eye-catching because of being embedded within the rugosity, foveolar interspaces on paramedian vertex about as wide as foveolar diameter and glabrous (Fig.69). Dorsal promesonotum with scattered foveolae and weakly microreticulate between superimposed longitudinal rugulae. Propodeum irregularly microreticulate. Lateral pronotum moderately shiny but on whole surface microreticulate. Lateral mesonotum and mesopleuron reticulate and longitudinally rugulose. Lateral metapleuron with 5–7 weak, longitudinal carinae. Petiole irregularly microreticulate. Postpetiole more shiny, with very delicate microreticulum. Pubescence on gaster tergites moderately long and moderately dense, PLG/CS 5.41 %, sqPDG 5.48. Head, gaster, femora, and tibiae dark brown to blackish brown. Mesosoma and postpetiole dark brown with reddish component. Petiole orange brown.</p> <p> <b>Taxonomic comments and clustering results</b>. <i>C. rugulosa</i> is morphometrically similar to <i>nigra</i>. The most diagnostic character of <i>rugulosa</i> is the strong longitudinal rugulae or carinulae on whole surface of dorsal head. The much more dense and stronger sculpture produces a mat surface appearance on head, mesosoma and petiole. The mesosomal shape is also characteristic: a feebly convex dorsal profile of promesonotum is contrasted by the more strongly convex dorsal profile of propodeum which is more strongly sloping down to spine base than in related species.</p> <p> <b>Biology</b>. Unknown</p>Published as part of <i>Seifert, Bernhard, 2023, A revision of the Palaearctic species of the ant genus Cardiocondyla Emery 1869 (Hymenoptera: Formicidae), pp. 1-64 in Zootaxa 5274 (1)</i> on pages 43-44, DOI: 10.11646/zootaxa.5274.1.1, <a href="http://zenodo.org/record/7888156">http://zenodo.org/record/7888156</a>
Formica persica Seifert & Schultz 2009, sp. n.
No full textFormica persica sp. n. Derivatio nominis: from Persia - the terra typica of this species. Type material examined: Holotype worker plus 6 worker paratypes (4 stored in ethanol) labelled "IRAN: 36.767° N, 54.567° E, Tuskestan forest, 900 m Juniperus forest O. Paknia 2005.09.23-517" and " Holotype Formica persica Seifert & Schultz " / " Paratype Formica persica Seifert & Schultz "; SMN Görlitz. Material examined: 20 samples with 54 workers from Iran were subject to a numeric analysis of 18 characters (Fig. 20). For details. see Appendix, as digital supplementary material to this article, at the journal's web pages. 20 samples with 54 workers from Iran were subject to a numeric analysis of 18 characters. Iran: Tuskestan forest (type), 23.IX.2005 [36.767° N, 54.567° E]; Chorteh, 8.VII.1973 [36.767° N, 50.583° E]; Dela-restagh vill., 13.VII.2004 [36.400° N, 52.535° E]; Golestan N.P., 29.V.2004 [37.383° N, 55.767° E]; Golestan N.P., 14. V.2007 [37.367° N, 55.817° E]; Golestan N.P., 11.VI.2008 [37.398° N, 55.798° E]; Golestan N.P., 11.VI.2008 [37.388° N, 55.804° E]; Golestan N.P., 14.VI.2008 [37.383° N, 55.817° E]; Asalem, 26.VI.1973 [38.400° N, 48.600° E]; Mazandaran, 30.07.2007 [36.170° N, 53.215° E]; Nowshahr, 25.VI.2008 [36.601° N, 51.585° E]; Abpari forest, 27.VI.2008 [36.502° N, 51.932° E]; Abpari forest, 27.VI.2008 [36.501° N, 51.982° E]; Talesh (2 samples, No. 3400, 3454), 6.VII.2008 [37.617° N, 48.744° E]; Talesh, 6.VII.2008 [37.681° N, 48.834° E]; Talesh, 7.VII.2008 [37.679° N, 48.808° E]; Talesh, 7.VII. 2008 [37.705° N, 48.887° E]; Talesh, Alasem r., 9.VII.2008 [37.681° N, 48.834° E]; Tehran, Pol-e-Zanguleh, 12.VII. 1973 [36.217° N, 51.317° E]. Description of worker (Tab. 1, Fig. 10): medium-sized Serviformica species (CS 1.332 mm), head and scape much longer than in F. cunicularia (CL / CW1.4 1.162, SL / CS1.4 1.152). Petiole rather wide (PEW / CS1.4 0.450). Distance between lateral ocelli moderate (OceD / CS1.4 0.162), eye medium-sized (EYE / CS1.4 0.297). Clypeus with sharp median keel and fine longitudinal microcarinulae. Frontal triangle finely transversely rippled and with 45 - 85 short pubescence hairs. Eyes with microsetae of 9 μ m maximum length. Pronotum, mesonotum, petiole, flexor profile of hind tibia, posterior margin of head, propodeum, and dorso-lateral metapleuron normally without setae. Ventral coxae with long setae, setae on dorsum of first gaster tergite sometimes lacking. Dorsal mesonotum in lateral aspect broadly convex, but in small ants flatter. Metanotal depression in larger specimens deep, in small specimens shallow. Propo-deal dome in profile obtuse-angled or rounded. Dorsal crest of petiole in frontal view convex, sometimes obtuse-angled. Petiole scale in lateral aspect slender, with convex anterior and more straight posterior profile. Mean distance of transverse microripples on dorsum of gaster larger than in F. cunicularia (RipD 5.8 μ m). Gaster covered by a dense silvery pubescence (sqPDG 3.3). Pubescence on head, me-sosoma and petiole less dense, ants appear somewhat shiny. Posterior vertex, often dorsal promesonotum, coxae, and all appendages brown, gaster always dark brown. Other body parts yellowish-reddish. Comments on taxonomy: The clear separation of F. tianshanica sp. n. from F. cunicularia and F. persica sp. n. has already been stated above (Fig. 17). It is unknown if there are contact areas with the Anatolian and Caucasian population of F. cunicularia. Distribution and biology: So far, only known from the North Iranian region of the Elburs Mountains between 48.5° to 56° E and 36.2° to 38.4° N, in a region with much precipitation (600 - 1500 mm per year). Altitudinal range from sea level up to 2300 metres. Occurs in highly diverse habitats from steppe, human settlements, rural areas, river sides, and frequently inside of forests. The forest sites are below 1000 metres and include deciduous and Juniperus forests.Published as part of Seifert, B. & Schultz, R., 2009, A taxonomic revision of the Formica rufibarbis Fabricius, 1793 group (Hymenoptera: Formicidae)., pp. 255-272 in Myrmecologische Nachrichten 12 on pages 268-26
Cardiocondyla tibetana Seifert 2003
No full text<i>Cardiocondyla tibetana</i> Seifert 2003 [types investigated] <p> This taxon has been described from the southern margin of Taklamakan Desert. Investigated were the holotype worker (the specimen with CW=510) and 2 paratype workers labelled “ CHINA: Xinjang, Tarim Basin, Ceele Station, leg. H. Heatwole, 1966.08.26 “, SMN Goerlitz; 2 paratype workers pierced on minute pins in the same block of <i>Sambucus</i> pith and labelled “ Tibet coll. G.Mayr ”, NHM Wien.</p> <p> <b>All material examined</b>. NUMOBAT data were recorded in 4 samples with 11 worker specimens. For details see supplementary information SI1, SI2. All material originated from China.</p> <p> <b>Geographic range</b>.Three findings with precise site records are at the southern and northern margin of the Taklamakan desert (37.015°N, 80.729°E, 1366 m; 41.175°N, 84.232°N, 920 m). The precise locality of Gustav Mayr’s sample is unclear but probably at the margin of the Tarim Basin with the Tibetan Plain.</p> <p> <b>Diagnosis</b>: --Worker (Tab. 4, Figs. 101–104; images ANTWEB1041252 and CASENT0919737 in www.antweb. org key): Rather small, CS 540 µm. Head short, CL/CW 1.159. Postocular index smaller than in other members of the <i>stambuloffii</i> group, PoOc/CL 0.424. Hind margin of head with a suggested concavity in the median third. Scape longer than in other members of the <i>stambuloffii</i> group, SL/CS 0.838. Eye larger than in other members of the <i>stambuloffii</i> group, EYE/CS 0.248. Frons narrower than in other members of the <i>stambuloffii</i> group (FRS/ CS 0.280), frontal carinae weakly converging immediately caudal of FRS level (FL/FR 1.047). Dorsal profile of promesonotum convex, metanotal depression rather shallow (MGr/CS 3.14 %), dorsal profile of propodeum slightly convex. Propodeal spines reduced to obtuse angled corners, SP/CS 0.044), the distance of their bases much smaller than in other members of the <i>stambuloffii</i> group (SPBA/CS 0.219). Petiole more than half as wide as postpetiole and distinctly higher than wide (PeW/CS 0.271, PeH/CS 0.310), in profile with a moderately short peduncle and the anterior slope of the node much less inclined than the posterior slope (58° vs. 71° relative to ventral petiole profile)—as result the node profile is strongly asymmetric. Petiole node in dorsal view wider than long. Postpetiole much narrower and lower than in other members of the <i>stambuloffii</i> group and less than twice as wide as high (PpW/ CS 0.510, PpH/CS 0.265), in dorsal aspect with a rather straight anterior margin, postpetiolar sternite completely flat. Clypeus, frontal laminae, and anterior 70% of median and paramedian vertex very densely longitudinally carinulate-rugulose; distance between carinulae on central vertex only 4–5 µm. Carinulae on lateral vertex interrupted and with much larger, more or less shining interspaces. Poorly visible hair base punctures of only 5–7 µm diameter are scattered in the interspaces; many of the hair bases without surrounding micropunctures (Fig. 104). Posterior third of head almost glabrous, only scattered hair base punctures present. Foveolae of any size and type on whole head completely absent. Pronotum glabrous. Dorsal parts of mesonotum and propodeum mainly smooth and shining, longitudinal carinulae may be present. Lateral mesonotum with interrupted, meso- and metapleurae with stronger, more continuous longitudinal rugulosity. Petiole and postpetiole smooth and shiny. Pubescence on gaster tergites moderately long and dense, PLG/CS 6.39 %, sqPDG 3.54. Whole body rather concolorous medium to blackish brown, appendages and sometimes clypeus lighter with yellowish tinge.</p> <p> <b>Taxonomic comments and clustering results</b>. The character combination of <i>Cardiocondyla tibetana</i> is unique and enables a safe distinction from any known Palaearctic species both by morphometry, body shape, and microstructures. The minute or absent hair base punctures and full absence of any foveolae on vertex, as well as spine and postpetiolar shape were the reasons for placing <i>tibetana</i> in the <i>stambuloffii</i> group. However, the larger eye size, the narrower frons, and the lower petiole height and postpetiole width also indicate affinities to the <i>elegans</i> or <i>ulianini</i> groups.</p> <p> <b>Biology.</b> Two nests were found by Roland Schultz in a semidesert zone in an area with clay or loamy soil occasionally flooded by the river Tarim and covered by light tamarisk stands.</p>Published as part of <i>Seifert, Bernhard, 2023, A revision of the Palaearctic species of the ant genus Cardiocondyla Emery 1869 (Hymenoptera: Formicidae), pp. 1-64 in Zootaxa 5274 (1)</i> on pages 53-62, DOI: 10.11646/zootaxa.5274.1.1, <a href="http://zenodo.org/record/7888156">http://zenodo.org/record/7888156</a>
Cardiocondyla persiana Seifert 2003
No full text<i>Cardiocondyla persiana</i> Seifert 2003 [type investigation] <p> This taxon has been described from Iran. Investigated was the holotype worker labelled <i>“</i> IRAN, Fars 1997 (1), Shiraz, ca. 1570 m; 13.-22.9.; leg. Schödl”, NHM Wien; 1 worker paratype with same labelling, SMN Görlitz. 6 worker paratypes labelled <i>“</i> IRAN, Fars 1997 (29), 80 km NW Shiraz, Chesmeh Bozghan, 2000 m; 22.9.; leg. Schödl ”, SMN Görlitz; 7 worker paratypes with same label NHM Wien. 3 worker paratypes labelled <i>“</i> IRAN, Fars 1997 (17), Barnoo NP, 7 km NE Shiraz, Chesmeh Mehrab, 1800 m; 18.9.; leg. Schödl ”, SMN Görlitz.</p> <p> <b>All material examined</b>. Numeric phenotypical data were available in 10 samples (largely nest samples) with 26 workers. For details see supplementary information SI1, SI2. This material originated from Georgia (2 samples) and Iran (8).</p> <p> <b>Geographic range</b>. From W Georgia (41.8°E) east to Central Iran (54.0°E). The most southern and northern sites are in Iran at. 29.2°N and in Georgia at 41.8°N. The altitudinal range varies from 5 m in W Georgia to 2000 m in Central Iran.</p> <p> <b>Diagnosis</b>: --Worker (Tab. 2, Figs. 50–53, key; images under ANTWEB1041250 and CASENT0919736 in www.antweb.org). Medium-sized, CS 536 µm. Head moderately elongated, CL/CW 1.165. Postocular distance large, PoOc/CL 0.441. Scape moderately elongated, SL/CS 0.794. Eye rather small, EYE/CS 0.233, with notable microsetae. Median third of hind margin of head suggestively concave. Frons rather broad (FRS/CS 0.254), frontal carinae slightly converging immediately caudal of FRS level (FL/FR 1.056). Dorsal profile of promesonotum and of propodeum convex with a deep metanotal depression (MGr/CS 4.30 %). Spines rather short and acute (SP/CS 0.125), their axis in profile deviating by about 48° from longitudinal axis of mesosoma, their bases rather distant (SPBA/CS 0.270). Petiole narrower than in <i>C. sahlbergi</i> and distinctly higher than wide (PeW/CS 0.316, PeH/CS 0.347), the node is slightly wider than long; petiole in profile with a moderately long peduncle and moderately steep anterior and very steep posterior slope of the node (about 63° and 88° relative to ventral profile—i.e. more asymmetric than in <i>C. sahlbergi</i>). Postpetiole wide, but narrower than in <i>C. sahlbergi</i> and moderately high (PpW/CS 0.543, PpH/CS 0.297), in dorsal view suggestively heard-shaped, with a concave anterior margin and convex sides; postpetiolar sternite with weak anteromedian bulge. Head in overall impression less shiny than in <i>C. sahlbergi</i>. Whole vertex with densely-packed, large (dFOV 19.4 µm) and well-demarcated foveolae showing an inner corona; the interspaces much smaller than foveolar diameter (Fig. 53). Median and paramedian clypeus and a small stripe on median vertex smooth; lateral clypeus and frontal laminae usually shining and finely longitudinally carinulate. Mesosoma due to more developed foveolae and carinulae less shiny than in <i>sahlbergi.</i> Waist segments very shiny with barely visible microreticulum. Pubescence on whole body distinctly longer than in <i>sahlbergi</i> and moderately dense, PLG/CS 6.77 %, sqPDG 4.36. Dorsal head often bicolored: anterior head back to the antennal socket level dirty yellowish, remaining vertex dark dirty brown. Mesosoma usually dirty yellowish brown to dirty brown. Waist, gaster, and hind- and midfemora often blackish brown. This color pattern is typical but not consistent throughout the population.</p> <p> <b>Taxonomic comments and clustering results</b>. The separation from <i>C. sahlbergi</i> and <i>C. bulgarica</i> has been presented in sections treating these species (p. 37, p. 38).</p> <p> <b>Biology</b>. Unknown.</p>Published as part of <i>Seifert, Bernhard, 2023, A revision of the Palaearctic species of the ant genus Cardiocondyla Emery 1869 (Hymenoptera: Formicidae), pp. 1-64 in Zootaxa 5274 (1)</i> on page 39, DOI: 10.11646/zootaxa.5274.1.1, <a href="http://zenodo.org/record/7888156">http://zenodo.org/record/7888156</a>
Cardiocondyla semirubra Seifert 2003
No full text<i>Cardiocondyla semirubra</i> Seifert 2003 [type investigation] <p>This taxon has been described from Asia Minor. Investigated were the holotype worker and 2 paratype workers labelled “ TURKEY: Sanliurfa 20 km S Steppe, 500 m, leg. A.Schulz 1993.06.12, No 1036” and 1 paratype worker labelled “ TURKEY: Sanliurfa 25 km E, Camlidere, Steppe, 500 m, leg. A. Schulz 1993.06.13, No 1045”, all in SMN Görlitz.</p> <p> <b>All material examined</b>. Numeric phenotypical data were available for two samples with four workers. For details see supplementary information SI1, SI2. This material originated from Turkey (2 samples).</p> <p> <b>Geographic range</b>. The two known samples from Asia Minor were collected at 36.94°N, 38.91°E, 400 m and 37.20°N, 39.00° E, 600 m. They are about 30 km apart.</p> <p> <b>Diagnosis</b>: --Worker (Tab. 3, Figs. 58–61, key). Rather large, CS 552 µm. Head moderately elongated, CL/CW 1.168. Postocular distance very small, PoOc/CL 0.374. Scape rather short, SL/CS 0.782. Eye rather large, EYE/ CS 0.256. Median third of hind margin of head slightly concave. Frons broad (FRS/CS 0.258), frontal notably converging immediately caudal of FRS level (FL/FR 1.069). Dorsal profile of promesonotum and of propodeum convex with a deep metanotal depression (MGr/CS 4.38 %). Spines short and blunt, more triangular (SP/CS 0.096), their axis in profile deviating by about 47° from longitudinal axis of mesosoma, their bases rather distant (SPBA/CS 0.254). Petiole very wide, nearly as wide as high (PeW/CS 0.322, PeH/CS 0.326); in profile with short peduncle, a rather straight to weakly convex anterior face and an ample node with the anterior slope less steep than the caudal slope (about 58° respectively 69° relative to ventral profile). Petiole node in dorsal view as wide as long and not gradually merging with the anterior peduncle. Postpetiole only 1.61-fold as wide as petiole and rather low (PpW/ CS 0.518, PpH/CS 0.267), in dorsal view suggestively heard-shaped, with a concave anterior margin and convex sides; postpetiolar sternite completely flat. Lateral and paramedian clypeus, frontal laminae, and area posterior of frontal laminae finely longitudinally carinulate. Dorsal head almost without longitudinal sculpture, a small stripe on median vertex often glabrous. Vertex with shallow foveolae of 16–19 µm mean diameter, the margins of foveolae often breached by microrugulae running partially or entirely through the foveolae; the interspaces on average wider than foveolar diameter, shiny and with fragments of a very delicate microreticulum (Fig. 61). Mesosoma moderately shining, finely microreticulate. Median promesonotum finely longitudinally carinulate-rugulose. Lateral meso- and metapleuron finely longitudinally carinulate-rugulose.Waist segments very shiny, with barely visible microreticulum. Pubescence on gaster tergites moderately long and moderately dense, PLG/CS 5.39 %, sqPDG 5.37. Dorsal head, gaster, coxae, femora, and tibiae dark to blackish brown; mesosoma and petiole reddish brown; postpetiole, scape, and antennal club dark brown.</p> <p> <b>Taxonomic comments and clustering results</b>. The extremely wide petiole is the outstanding character of <i>Cardiocondyla semirubra</i>. The only similar species with zoogeographic proximity is <i>C. nigra</i> which has a narrower frons and petiole and often a darker mesosomal pigmentation. A PCA considering FRS, PeW and PigMes separates the four workers of <i>semirubra</i> from the <i>nigra</i> cluster (Fig. 141).</p> <p> <b>Biology</b>. Unknown.</p>Published as part of <i>Seifert, Bernhard, 2023, A revision of the Palaearctic species of the ant genus Cardiocondyla Emery 1869 (Hymenoptera: Formicidae), pp. 1-64 in Zootaxa 5274 (1)</i> on page 42, DOI: 10.11646/zootaxa.5274.1.1, <a href="http://zenodo.org/record/7888156">http://zenodo.org/record/7888156</a>
Seifert manifolds that are ramified two-sheeted cyclic coverings. (Spanish)
No full textIf L is a link in the 3-sphere S3, let e:L˜→S3 denote the 2-fold cyclic covering of S3 branched over L. R. H. Fox [Rev. Mat. Hisp.-Amer. (4) 32 (1972), 158–166;] has shown that there is no link L in S3 such that L˜ is S1×S1×S1; the author [ibid. (4) 33 (1973), 32–35] has extended this to Fg×S1 (g≥1), where Fg denotes a closed orientable surface of genus g. In the present article he investigates the following more general question: Given any orientable Seifert fibre space M, determine whether M is homeomorphic to L˜ for some link L⊂S3; if the answer is yes, describe L.
He finds an affirmative answer for all orientable Seifert fibre spaces over a 2-sphere or over a nonorientable closed surface as base B. In these cases a corresponding link L is constructed by using the technique of tangle modification introduced by J. H. Conway [Computational problems in abstract algebra (Proc. Conf., Oxford, 1967), pp. 329–358, Pergamon, Oxford, 1970;], to which corresponds the operation of removing from L˜ a solid torus and sewing it back differently in the covering. For orientable base B of positive genus g, i.e., B=Fg (g≥1), the situation is more complex: (i) The author finds a negative answer to the above question for the fibre spaces (Oog|b) without exceptional fibres, provided b≠±1,±2 and g≥1 (for the notation, see H. Seifert's article [Acta Math. 60 (1933), 147–238; Zbl 6, 83]). (ii) Analyzing the special assumption that the unique nontrivial covering transformation of the 2-fold cover is fibre-preserving, the author obtains a list of Seifert fibre spaces with base Fg, each of which is homeomorphic to L˜ for an appropriate link L in S3. (iii) The verification that this list is complete would depend on an affirmative answer to an unsolved question concerning involutions in Seifert fibre spaces. (iv) Modifying the main question, the author proves that each orientable Seifert fibre space over Fg (g≥0) is a 2-fold cyclic cover branched over a link of Hg, the 3-sphere with g handles attached.
Finally, it is shown how some of these results extend from the class of Seifert fibre spaces to the class of "graph-manifolds'' introduced by F. Waldhausen [Invent. Math. 3 (1967), 308–333; ibid. 4 (1967), 87–117;]. The paper is a fine piece of geometry, being specified throughout with interesting examples.Depto. de Álgebra, Geometría y TopologíaFac. de Ciencias MatemáticasTRUEpu
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