104,963 research outputs found
Ophion angularis Johansson & Cederberg 2019, sp. nov.
No full textOphion angularis Johansson & Cederberg sp. nov. urn:lsid:zoobank.org:act: BB40BE24-344A-40B6-AF63-078ED2FFCDB3 Figs 9F, 22 Diagnosis The combination of the shape of the pleurosternal angles, the buccate temples and the number of flagellomeres separates this species from all other known Swedish species of Ophion. Ophion angularis Johansson & Cederberg sp. nov. is most likely to be confused with Ophion crassicornis Brock, 1982 and Ophion borealis Johansson sp. nov., but has more prominent pleurosternal angles, usually more numerous flagellomeres, slightly less buccate temples, entirely uncarinated scutellum and more densely punctate face. Etymology The pleurosternal angles are very prominent in this species. Material examined 27 ♀♀, 10 ♂♂ (Sweden); 2 ♀♀ (France); 7 ♂♂ (Estonia). Type material Holotype SWEDEN • ♀; Östergötland, Norrköping, Kimstad; 58.551° N, 15.962° E; 1 May–1 Jul. 2012; M. Stahre leg.; Yellow pan trap in gravelpit close to pine and oak forest; STI-NJBC79; NHRS- HEVA000008581. Paratypes SWEDEN • 1 ♀; Öland, Borgholm, 0.6 km SW Borgholm church; 56.876° N, 16.648° E; 22 May 1974; S. Johansson leg.; MV-light in garden surrounded by oak forest; MZLU Type no. 6366:1 • 1 ♀; Öland, Mörbylånga, Räpplinge; 56.827° N, 16.660° E; 18 Jun. 1964; S. Johansson leg.; MV-light; MZLU Type no. 6366:2 • 1 ♀; Skåne, Ystad, Kåseberga; 55.385° N, 14.066° E; 21 May–28 July 2016; N. Ryrholm and C. Källander leg.; MV-light trap in warm coastal sandslopes; NHRS-HEVA000008582 • 1 ♀; Skåne, Simrishamn, Örnahusen; 55.450° N, 14.261° E; 4–26 Jun. 2006; N. Ryrholm and C. Källander leg.; MVlight trap in coastal meadow; NHRS-HEVA000008583 • 2 ♀♀; Blekinge, Karlskrona, Tullaretorpet; 56.227° N, 15.647° E; 2–3 Jun. 2016; C. Philipsson leg.; MV-light in deciduous forest; 1 ♀ STI-NJBC78; NHRS-HEVA000008584, NHRS-HEVA000008585 • 1 ♀; Gotland, Roleks; 57.536° N, 18.339° E; 2–18 Jun. 2004; SMTP leg.; Malaise trap in grazed calcareous pine forest (Trap id 28, coll ev. id. 497); NHRS-HEVA000008586 • 1 ♀; Gotland, Roleks; 10 Apr.–6 Jun. 2005; SMTP leg.; Malaise trap in grazed calcareous pine forest (Trap id 28, coll ev. id. 1464); NHRS-HEVA000008587 • 1 ♂; Öland, Mörbylånga, Strandskogen; 56.702° N, 16.494° E; 22 May 2016; B. Andersson leg.; MV-light trap in garden on sand close to deciduous forest; NHRS-HEVA000008588 • 1 ♀; Skåne, Ystad, Spraggehusen; 55.442° N, 14.066° E; 27 May–28 Jul. 2016; N. Ryrholm and C. Källander leg.; MV-light trap in coastal sanddunes; NHRS-HEVA000008589 • 1 ♀; Gotland, Sundre, Hallbjäns; 56.938° N, 18.146° E; 21 Jun.–22 Jul. 2006; N. Ryrholm and C. Källander leg.; MV-light trap in coastal rocky, calcareous heath; NHRS-HEVA000008590 • 1 ♀; Gotland, Hamra, Tuvlandet; 56.966° N, 18.378° E; 24 Aug.–27 Aug. 2007; N. Ryrholm and C. Källander leg.; MV-light trap in abandoned farmland/gardens; NHRS- HEVA000008591 • 3 ♀♀; same locality as for preceding; 56.966° N, 18.308° E; 26Aug.–24 Sep. 2007; N. Ryrholm and C. Källander leg.; MV-light trap in abandoned farmland/gardens; NHRS-HEVA000008592 to NHRS-HEVA000008594 • 2 ♀♀; Småland, Ljungby, Agunnaryd, Nockarp; 56.767° N, 14.167° E; 10 Jul. 1966; N. Burreau leg.; MZLU Type no. 6366:3, MZLU Type no. 6366:4 • 1 ♂; same data as for preceding; 19 Jun. 1966; N. Burreau leg.; MZLU Type no. 6366:5 • 4 ♂♂, 2 ♀♀; Skåne, Klippan, Bonnarpshed; 56.087° N, 13.176° E; 8–13 Jun. 2007; N. Ryrholm and C. Källander leg.; MV-light trap in grazed heathland; NHRS-HEVA000008595 to NHRS-HEVA000008600 • 2 ♂♂; Skåne, Höganäs, Mölle; 56.289° N, 12.498° E; 1 Jun. 1965; N. Burreau leg.; MZLU Type no. 6366:6, MZLU Type no. 6366:7 • 1 ♂; Halland, Halmstad, Steninge; 56.758° N, 12.637° E; 29 Jun. 1941; B. Hanström leg.; MZLU Type no. 6366:8 • 1 ♀; Uppland, Väddö, Ytterskär; 59.938° N, 18.920° E; 23 May–26 Jun. 2017; N. Ryrholm and C. Källander leg.; MV-light trap; STI-NJBC186; NHRS-HEVA000008601 • 1 ♀; Öland, Mörbylånga, Torslunda Ekologiska Station; 56.619° N, 16.497° E; 5 Jun. 1977; B. Cederberg leg.; Sweepnet in dry grassland, NHRS-HEVA000008602 • 1 ♂; same data as for preceding; 12 Jun. 1977; B. Cederberg leg.; Sweepnet in dry grassland; NHRS-HEVA000008603. Description Fore wing length 15–17 mm. Antenna in both sexes with 59–67 flagellomeres. First flagellomere 2.5–3.0 times as long as wide. Central flagellomeres stout, about 1.2–1.3 times as long as wide. Apical flagellomeres approximately 1.5 times as long as wide. Temple in female and male strongly buccate, in lateral view 0.7–0.8 times as long as compound eye. Head with distinct gap between lateral ocellus and inner margin of compound eye. Face below antennal sockets very densely punctate, interstices about 0.2 times diameter of punctures. Malar space about 0.2 times as long as mandibular base in female and male. Mandibular gape right-angled, with internal angles. Wing membrane clear. Ramellus reaching 0.2–0.3 times the width of the discosubmarginal cell. Radius sinuous. Mesopleuron shagreened with very dense punctures which often merge centrally. Epicnemial carina, in antero-ventral view, with pleurosternal angles nearly in level with sternal angles, pleurosternal angles acute (Fig. 9 F). Epicnemial carina between tip of pleurosternal angle and sternal part strongly concave. Scutellum without distinct lateral carinae in basal half. Propodeum distinctly punctate and coriaceous in front of anterior transverse carina, between transverse carina more often quite shiny, weakly rugose. Anterior transverse carina sometimes absent or weak laterally and posterior transverse often interrupted centrally, in continental specimens the anterior carina sometimes more strongly raised. Longitudinal carinae delimiting area superomedia and petiolar carinae often strong. Area superomedia quite narrow, about two times as long as wide. Hind trochantellus shorter than wide in dorsal view. Legs normal with hind femur about 7.0 times as long as wide. Sclerotised section of first sternite ending level to spiracle (as in Fig. 5 H). Inner spur of hind tibia 0.4 times as long as hind metatarsus. Colour Body testaceous. Mandibular teeth black. Head with inner and outer eye margins widely yellow. Ovipositor sheath black or dark brown, contrasting in colour with posterior metasomal segments. DNA barcode The DNA barcode sequences of four Swedish specimens of Ophion angularis Johansson & Cederberg sp. nov. are available at the BOLD systems database (www.boldsystems.org, BIN. BOLD:ADG2027. Specimen codes: STI-NJBC: 78–79, 186, 267). Ecology The species seems to occur in open or semi-open habitats and is active during late June–August. Other than that, nothing is known about the biology. Distribution in Sweden Rare but widespread in Southern Sweden. Remarks This species has been confused with Ophion crassicornis Brock, 1982 and was also probably partly included in the description of that species. Ophion angularis Cederberg & Johansson sp. nov. is, however, both morphologically and genetically distinct.Published as part of Johansson, Niklas & Cederberg, Björn, 2019, Review of the Swedish species of Ophion (Hymenoptera: Ichneumonidae: Ophioninae), with the description of 18 new species and an illustrated key to Swedish species, pp. 1-136 in European Journal of Taxonomy 550 on pages 37-40, DOI: 10.5852/ejt.2019.550, http://zenodo.org/record/347640
Ophion luteus Johansson & Cederberg 2019, stat. rev.
No full textOphion luteus (Linnaeus, 1758) stat. rev. Figs 6A, H, 10A, 14A Ichneumon luteus Linnaeus, 1758: 566. Ophion distans Thomson, 1888: 1191. Material examined Lectotype, ♂, of Ichneumon luteus (LSL); lectotype, ♀, of Ophion distans (MZLU); 53 ♀♀, 27 ♂♂ (Sweden); 1 ♀ (Estonia); 1 ♀ (Norway). Diagnosis Fore wing length 12–15 mm. Antenna with 47–53 flagellomeres. First flagellomere about 4.0 times as long as wide. Central flagellomeres about 1.5–1.6 times as long as wide. Subapical flagellomeres approximately 1.5 times as long as wide. Temple buccate. Head in lateral view with temple about 0.8–0.9 times as long as compound eye in both females and males (Fig. 14A). Gap between compound eye and lateral ocellus always distinct, 0.3–0.4 times the diameter of ocellus. Ocelli small. Central ocellus in female in anterior view as wide as distance between central ocellus and inner eye margins. Malar space about 0.3–0.4 times as long as mandibular base in female and about 0.5 times in male. Mandibles often worn, usually with the gap between teeth acute angled and internal angles absent (as in Fig. 10I), but specimens from coastal localities in Southern Sweden frequently with internal angles present. Wing membrane transparent. Ramellus usually short, reaching 0.1–0.3 times the width of the discosubmarginal cell. Radius sinuous. Structure of mesopleuron in most cases shining or weakly shagreened with distinct, very regular punctation consisting of small punctures. Interstices between punctures about equal to their diameter. Epicnemial carina, in antero-ventral view, with pleurosternal angles obviously anterior to sternal angles (as in Fig. 9E). Pleurosternal angles rounded, obtuse to right angled. Scutellum without distinct lateral carinae (Fig. 6A). Propodeum posterior to anterior transverse carina mostly shining. Anterior transverse carina always present centrally anterior to area superomedia, but often also present laterally though rarely strongly raised. Posterior transverse carina usually only present laterally, widely interrupted centrally (Fig. 10A). Legs normal with hind femur about 6.0–6.5 times as long as wide. Hind trochantellus usually as long as wide in dorsal view (as in Fig. 7E). Inner spur of hind tibia long about 0.3–0.4 times as long as first hind tarsal segment. Sclerotised part of first sternite ending level to spiracle (Fig. 6H). Colour Body testaceous. Mandibular teeth black. Head with inner and outer orbits yellow. Ovipositor sheath testaceous, concolourous with posterior metasomal segments. DNA barcode The DNA barcode sequences of 16 Swedish specimens of Ophion luteus are available at the BOLD systems database (www.boldsystems.org, BIN. BOLD: ACF9514. Specimen codes: STI-NJBC: 54, 58–61, 63, 65–69, 302, 322, 324, 326, 328). Ecology Ophion luteus is active in late spring and during early summer, May–June in a variety of habitats. Brock (1982) refers to a rearing from Actebia praecox. Distribution in Sweden Rare but widespread in Southern Sweden and the southern parts of Central Sweden. Remarks See Discussion: “The Ophion luteus aggregate”.Published as part of Johansson, Niklas & Cederberg, Björn, 2019, Review of the Swedish species of Ophion (Hymenoptera: Ichneumonidae: Ophioninae), with the description of 18 new species and an illustrated key to Swedish species, pp. 1-136 in European Journal of Taxonomy 550 on pages 76-77, DOI: 10.5852/ejt.2019.550, http://zenodo.org/record/347640
Ophion kallanderi Johansson & Cederberg 2019, sp. nov.
No full textOphion kallanderi Johansson sp. nov. urn:lsid:zoobank.org:act: 9D7922E7-EC2C-40EE-8CCD-FAF3739F463E Figs 9I, 34 Diagnosis Ophion kallanderi Johansson sp. nov., which according to the barcoding results (Fig. 1) belongs to the Ophion parvulus aggregate, is one of the trickier Ophion species to identify. It is superficially similar to the species around Ophion slaviceki, but is easily distinguished by the shorter hind trochantellus, the right angled gap between the mandibular teeth, the lower number of flagellomeres and the strongly elongate second flagellomere. The latter character is only otherwise present in Ophion tenuicornis Johansson sp. nov. and Ophion scutellaris. The primary risk of confusion is with Ophion parvulus, Ophion paraparvulus Johansson sp. nov. and Ophion tenuicornis Johansson sp. nov., because of the very weakly sinuate radius in the female that sometimes can be perceived to be evenly curved. Another feature that is frequently present in O. kallanderi Johansson sp. nov., but frequently missing in the other species of the aggregate, is that the pleurosternal angles are more distinct and often slightly protruding (Fig. 9I). In all known specimens, the posterior transverse carina of the propodeum is widely interrupted or only weakly raised centrally, a feature otherwise only frequently occurring in Ophion paraparvulus Johansson sp. nov. within the O. parvulus aggregate. The best diagnostic character is, however, the shape of the flagellomeres. The second flagellomere is distinctly longer than in O. parvulus and O. paraparvulus Johansson sp. nov. and the apical flagellomeres are stouter than in O. tenuicornis Johansson sp. nov. Another distinguishing feature is the shape of the temples. In O. kallanderi Johansson sp. nov. the head is about 0.4–0.5 times as long as the compound eye in lateral view, while it is narrower, 0.3, in both O. paraparvulus and O. tenuicornis Johansson sp. nov. (Table 1). The few known males have the radius evenly curved but are distinguished from the other species in the O. parvulus aggregate on the shape of the flagellomeres. Etymology This species is named in honor of the Swedish lepidopterologist Clas Källander who by donating a large number of Ophion specimens has contributed greatly to this study. Material examined 14 ♀♀, 1 ♂ (Sweden); 1 ♂ (Great Britain); 5 ♀♀, 3 ♂♂ (Lithuania). Type material Holotype SWEDEN • ♀; Västmanland, Sala, 1.4 km W Sala Station; 59.922° N, 16.571° E; 22 Sep. 1974; S. Johansson leg.; MV-light; MZLU Type no. 6371:1. Paratypes SWEDEN • 1 ♀; same data as for holotype; 21 Sep. 1974; S. Johansson leg., MV-light; MZLU Type no. 6371:2 • 1 ♀; Västmanland, Fläckebo, 0.3 km NE Fläckebo church; 59.889° N, 16.359° E; 18 Sep. 1974; S. Johansson leg.; MV-light; MZLU Type no. 6371:3 • 1 ♀; Dalarna, Säterdalen, Näsåkerspussen; 59.734° N, 17.720° E; 4–26 Aug. 2003; SMTP leg.; Malaise trap in alder swamp wood, (Trap id. 10, coll. ev id 399); NHRS-HEVA000008675 • 2 ♀♀; Gästrikland, Gävle, Grinduga; 60.641° N, 17.299° E; 10–17 Sep. 2013; N. Ryrholm and C. Källander leg.; MV-light trap in mixed woodland/farmland; NHRS-HEVA000008676, NHRS-HEVA000008677 • 1 ♀; Skåne, Kullen, Brunkulla; 56.301° N, 12.455° E; 24 Aug. 1975; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:4 • 1 ♀; same data as for preceding; 22 Aug. 1974; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:5 • 2 ♀ ♀; same data as for preceding; 28 Aug. 1975; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:6 • 1 ♀; same data as for preceding; 31 Aug. 1974; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:7 • 1 ♂; same data as for preceding; 28 Aug. 1974; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6371:8. Description Fore wing length 15 mm. Antenna with 47–50 flagellomeres. First flagellomere about 4.0–4.5 times as long as wide. Second flagellomere about 3.0 times as long as wide. Central flagellomeres about 2.0–2.5 times as long as wide. Subapical flagellomeres approximately 1.6–1.7 times as long as wide. Head relatively narrowed behind eyes, in lateral view temple 0.4–0.5 times as long as compound eye. Lateral ocellus touching compound eyes. In female the ocelli rather small, not covering the inner margin of compound eye in dorsal view. The distance between lateral ocelli about 0.5–0.6 times as wide as ocellus. Malar space about 0.2 times as long as mandibular base in female and about 0.4 times in male. Mandibular gape right-angled, with internal angles. Wing membrane clear. Ramellus usually quite short, reaching 0.2–0.4 times the width of the discosubmarginal cell. Radius weakly sinuate, sometimes even more or less straight in the basal part in the female and evenly curved in the male. Structure of mesopleuron shining or weakly shagreened with weaker, very regular punctation consisting of small punctures. Interstices between punctures about equal to their diameter up to two times their diameter. Epicnemial carina, in antero-ventral view, with pleurosternal angles obviously anterior to sternal angles. Pleurosternal angles acute, rarely right angled (Fig. 9I). Scutellum without lateral carinae (as in Fig. 6A). Structure of propodeum similar to that of O. obscuratus, posterior to anterior transverse carina mostly shining. Anterior transverse carina complete, quite strongly raised. Posterior transverse carina usually only present laterally, widely interrupted centrally. Sclerotised part of first sternite ending level to spiracle. Central longitudinal carinae weak or absent. Hind trochantellus shorter than wide in dorsal view. Legs normal with hind femur 7.0 times as long as wide. Hind trochantellus shorter than in other similar species. Inner spur of hind tibia short, about 0.3 times as long as hind metatarsus. First sternite ending in level with spiracle (as in Fig. 6H). Colour Body testaceous, inner and outer eye margins yellow. Mandibular teeth black. Ovipositor sheath testaceous. DNA barcode The DNA barcode sequences of one Swedish specimens of Ophion kallanderi Johansson sp. nov. is available at the BOLD systems database (www.boldsystems.org, Specimen code: STI-NJBC: 262). Ecology All specimens have been collected in woodlands during August–September. Distribution in Sweden Rare but probably overlooked in Central Sweden. Older records from Southern Sweden (MZLU) indicates a wider distribution. Remarks Despite the slightly sinuate radius and the more pronounced pleurosternal angles, this species is most likely a member of the O. parvulus aggregate. However the barcode sequence obtained was quite weak and the more detailed phylogenetic position is somewhat uncertain.Published as part of Johansson, Niklas & Cederberg, Björn, 2019, Review of the Swedish species of Ophion (Hymenoptera: Ichneumonidae: Ophioninae), with the description of 18 new species and an illustrated key to Swedish species, pp. 1-136 in European Journal of Taxonomy 550 on pages 70-72, DOI: 10.5852/ejt.2019.550, http://zenodo.org/record/347640
Ophion paraparvulus Johansson & Cederberg 2019, sp. nov.
No full textOphion paraparvulus Johansson sp. nov. urn:lsid:zoobank.org:act: 27180696-5ED4-4907-9603-0584ACEE7B66 Figs 8B, 38 Diagnosis Ophion paraparvulus Johansson sp. nov. is one of the species in an aggregate previously treated under the name Ophion parvulus. Ophion paraparvulus Johansson sp. nov. is morphologically intermediate between Ophion parvulus and Ophion tenuicornis Johansson sp. nov. and has the flagellomeres stouter and less pilose than O. tenuicornis Johansson sp. nov., but longer and more pilose than O. parvulus. It is also easily confused with O. kallanderi Johansson sp. nov., but distinguished by the shorter temples and the stouter central flagellomeres. The posterior transverse carina is, as in O. kallanderi, usually widely interrupted in the middle with only the lateral parts distinct (Table 1). Etymology The species is very similar and closely related to Ophion parvulus. Material examined 17 ♀♀ (Sweden); 2 ♀♀ (Estonia); 1 ♀ (Norway). Type material Holotype SWEDEN • ♀; Blekinge, Karlskrona, Tullaretorpet; 56.227° N, 15.647° E; 13–14 Jun. 2016; C. Philipsson leg.; MV-light trap in oak dominated deciduous forest; STI-NJBC40; NHRS-HEVA000008694. Paratypes SWEDEN • 1 ♀; same data as for holotype; 20–21 Jun. 2016; C. Philipsson leg.; MV-light trap; STI- NJBC36; NHRS-HEVA000008695 • 1 ♀; Bohuslän, Tossene, Stora Hultet; 58.446° N, 11.409° E; 31 May–7 Jun. 2016; N. Ryrholm and C. Källander leg.; MV-light trap in farmland; NHRS- HEVA000008696 • 1 ♀; Småland, Nybro, Bjällingsmåla; 56.930° N, 15.909° E; 1 May–1 Jul. 2015; N. Johansson leg.; Malaise trap in old mixed forest; NHRS-HEVA000008697 • 1 ♀; Blekinge, Svängsta, Bökemåla (Bökasmåla); 56.241° N, 14.736° E; 5–7 Jul. 2015; M. Sjödahl leg.; MV-light; NHRS- HEVA000008698 • 1 ♀; Skåne, Kullen, Brunkulla; 56.301° N, 12.455° E; 16 Jul. 1974; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6373:1 • 1 ♀; Östergötland, Boxholm, Björneberg; 58.195° N, 14.909° E; 4–20 Jun. 2018; N. Johansson leg.; Malaise trap in old mixed forest; NHRS-HEVA000008699 • 1 ♀; Bohuslän, Uddevalla, Älje-Porsen; 58.355° N, 12.031° E; 5 Jun. 2017; M. Oomen leg.; MV-light trap; NHRS-HEVA000008700 • 1 ♀; Skåne, Kullen, Brunkulla; 56.301° N, 12.455° E; 20 Jun. 1973; C.-H. Lindroth leg.; MV-light; MZLU Type no. 6373:2. Description Fore wing length 16 mm. Antenna with 53–54 flagellomeres. First flagellomere 4.0 times as long as wide.Second–fourth flagellomere about 2.5–3.0 times as long as wide. Central flagellomeres elongate, about 2.0 times as long as wide. Apical flagellomeres 1.8–1.9 times as long as wide. Flagellomeres with quite long prominent pilosity. Length of pilosity in females at least 0.5 width of flagellomere (Fig. 8B). Head narrow behind eyes, in lateral view with temple 0.3 times as long as compound eye. Ocelli in female large, in dorsal view covering the inner margin of compound eye. The distance between lateral ocelli in female about 0.3 times the diameter of the ocellus. Malar space about 0.1 times as long as mandibular base. Mandibular gape right-angled, with internal angles. Wing membrane clear. Ramellus distinct, reaching 0.2–0.4 the width of discosubmarginal cell but sometimes small or absent. Radius evenly curved. Mesopleuron weakly shagreened with deep distinct punctures. Interstices between punctures about equal to their diameter. Epicnemial carina, in antero-ventral view, with pleurosternal angles obviously anterior to sternal angles. Pleurosternal angles rounded, slightly obtuse. Scutellum with lateral carinae only indicated basally. Propodeum with very weak rugose structure, shining with anterior transverse carina strongly raised. Posterior transverse carina usually widely interrupted centrally. Longitudinal carinae delimiting area superomedia and lateral longitudinal carinae often weak or absent, but normally clearly indicated at the junction with the posterior transverse carina. Hind trochantellus shorter than wide in dorsal view. Legs normal with hind femur about 6.0–7.0 times as long as wide. Sclerotised part of first sternite ending level or slightly posterior to spiracle. Inner spur of hind tibia as long as 0.4 times first hind metatarsus. Male unknown. Colour Body light testaceous, frequently with diffuse pale markings as in O. parvulus. Mandibular teeth black. Ovipositor sheath usually concolourous with posterior metasomal segments. DNA barcode The DNA barcode sequences of two Swedish specimens of Ophion paraparvulus Johansson sp. nov. are available at the BOLD systems database (www.boldsystems.org, BIN. BOLD: ADG1399. Specimen codes: STI-NJBC: 36, 40). Ecology Very little is known about the biology of this species. It has been collected in areas with mature semiopen mixed forests. The flight period seems to be mid June to mid July. It is active earlier in the season than its sibling species O. tenuicornis Johansson sp. nov. and O. costatus. Distribution in Sweden Rare and possibly confined to areas with favourable climate in Southern Sweden.Published as part of Johansson, Niklas & Cederberg, Björn, 2019, Review of the Swedish species of Ophion (Hymenoptera: Ichneumonidae: Ophioninae), with the description of 18 new species and an illustrated key to Swedish species, pp. 1-136 in European Journal of Taxonomy 550 on pages 86-88, DOI: 10.5852/ejt.2019.550, http://zenodo.org/record/347640
Arno Rafael Cederberg Eesti Vabariigi Tartu Ülikooli õppejõuna [Abstract: Arno Rafael Cederberg as a Professor at the Estonian Republic’s University of Tartu]
No full textAbstract: Arno Rafael Cederberg as a Professor at the Estonian Republic’s University of Tartu
Soon after the Republic of Estonia declared itself independent on the 24th of February 1918, academics and politicians of the newly formed nation wished to found a new national university built on the foundation of the former Imperial University of Tartu. This university would teach in the Estonian language, with the aim of offering higher educational studies in Estonian, as well as building up Estonian national sciences.
By the spring of 1919, the committee for reopening the university was ready to open the university for studies and research in the autumn of the same year. However, they were struggling to find suitably qualified professors, as Estonians had generally been excluded from the imperial university. Prior to 1918, only three Estonians had worked as professors at the University of Tartu, while others were forced to find positions at Russian universities.
In order to avoid delaying the opening of the new university, the committee decided to invite foreign professors to fill the vacant positions. They were particularly keen on Finnish professors, with whom Estonians had formed strong ties during the early 20th century. Thus, in the first half of the 1920s, Estonian research and university life was supported by eight Finnish professors.
This article focuses on one of them, namely Professor A. R. Cederberg, Professor of Estonian and Nordic History, and his activity and contributions to the formation of a new field of science and its study at the University of Tartu, as well as in the rest of Estonia.
As Cederberg was an experienced archivist, he was asked to help build up the archives of Estonia and organise the collection of the Estonian National Museum, while working for the University in parallel. Despite his large workload, he was able to quickly set goals and priorities for the development of Estonian historical science and its study programme at the university. Prior to the opening of the national university, Estonian history had primarily been researched by Baltic Germans, whose goals and visions of history differed significantly from those of Estonians.
Cederberg believed that historical research efforts should focus more on the period of Swedish rule from the 16th century until the beginning of the 18th century. This period of Estonian history had previously been largely ignored by the historical community in favour of other historical periods. While working in mainly Finnish and Scandinavian archives during summer and winter holidays, he found many sources that shed light on the period of Swedish rule in Estonia. By directing students towards researching the early modern era in Estonia, he ensured that dozens of seminar works and Master’s and Doctor’s theses were written on this subject.
Cederberg was not convinced that the foundation of Estonian historical science could be based only on research conducted at the university. As such he decided to found the first Estonian Academic Historical Society right after his arrival in Tartu in the early 1920s. While the primary goal of this society was to get students interested in history, particularly Estonian history, the society quickly developed into the centre of Estonian historical science.
During the eight-and-a-half years he worked at the University of Tartu, Cederberg contributed enormously to the development of Estonian historical science. He built up an entirely new field of science and study based on the histories of Estonia and the Nordic countries, and educated a plethora of outstanding young historians (such as H. Sepp, H. Kruus, P. Treiberg (Tarvel), J. Vasar, E. Blumfeldt, A. Soom, O. Liiv, G. Rauch, etc.), who vigorously and effectively continued the work their professor had started
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
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
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