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| Registros recuperados: 23 | |
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| Helsdingen, P.J. van. |
| CONTENTS Introduction................... 3 History.................... 5 Material.................... 7 Method.................... 9 Functional positions of the genitalia............. 12 Summary and discussion of the functioning of the genitalia...... 22 Taxonomic part Key to the genera................. 26 Linyphia Latreille................. 27 Key to the species................ 30 Neriene Blackwall................. 73 Key to the species................ 77 The Neriene clathrata group............. 84 The Neriene hammeni group............. 124 The Neriene emphana group............. 210 The Neriene radiata group.............. 223 The Neriene peltata group.............. 251 Microlinyphia and Frontinellina............. 284 Discussion of taxonomic... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.75. |
| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/317804 |
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| Helsdingen, P.J. van. |
| In any new region the knowledge of the spider fauna, or of any other group of organisms, has to go through three successive stages. In the beginning there is a period of descriptive activity with many new species recorded and named, in the past usually by several authors independently. In the Nearotic Region this stage may have ended for New England, but this is hardly true for the Far West and the southeastern part. In particular the names of Emerton, McCook, Keyserling, Banks, Petrunkevitch, Crosby, Bishop, Chamberlin, and Ivie, not to mention many others, are forever associated with this period. By building up large collections and giving their finds to the world they have laid the foundations of New World Arachnology. The second stage I would call the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/317890 |
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| Helsdingen, P.J. van. |
| INTRODUCTION Allomengea, formerly known as Mengea, is a well-known genus in northwestern Europe. It is a small genus with only four species, which, though locally abundant, are not at all common. The males are easily recognized by the palp, which is adorned with a bunch of modified spines standing on the tip of a horn-like projection of the cymbium. Because of the long, thin embolus, which corresponds with coiled membraneous tubes in the female vulva, the genus is placed in the tribus Linyphiini 1). The genus appeared to be Holarctic, since Holm (1960) transferred the North American Microneta pinnata Emerton to Allomengea and at the same time published the first records from the extreme northwestern part of the Nearctic Region (Alaska) of Allomengea... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1974 |
URL: http://www.repository.naturalis.nl/record/319289 |
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| Helsdingen, P.J. van. |
| The spider fauna of Scragh Bog, a quacking bog in Co Westmeath, Ireland, was investigated for the first time. The presence of 53 species could be established, two of which are new to Ireland (Carorita limnaea (Crosby & Bishop), Porrhomma oblitum (O.P.-Cambridge)), while 30 represent new county records [Philodromus aureolus (Clerck), Tibellus maritimus (Meigen), Misumena vatia (Clerck), Oxyptila trux (Blackwall), Neon reticulatus (Blackwall), Sitticus caricis (Westring), Pirata hygrophilus Thorell, Pirata piscatorius (Clerck), Antistea elegans (Blackwall), Ero cambridgei Kulczynski, Theridion instabile O.P.Cambridge, Metellina mengei (Blackwall), Aphileta misera (O.P.-Cambridge), Araeoncus crassiceps (Westring), Bathyphantes approximatus... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Araneae; Arachnida; Fenlands; Ireland; New county records; New Irish records; Quaking bog; Spiders; Westmeath.; 42.74. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/317683 |
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| Helsdingen, P.J. van. |
| INTRODUCTION The Linyphiidae are builders of horizontal webs, on the underside of which the animals live. In most species the reproductive period is limited to a few weeks ; after that time males are rarely met with. As in consequence all observations should be made in the course of a few weeks the species of this family are not very suited for the purpose of a lengthened and thorough investigation into the sexual behaviour. Tretzel (1954), however, observed the perennial occurrence of adult specimens of Lepthyphantes leprosus (Ohlert). Locket & Millidge (1953) and Wiehle (1956) likewise mentioned this phenomenon. The species moreover was known to occur in large quantities in the southern part of the Netherlands, viz., in the artificial marl-caves of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/318322 |
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| Helsdingen, P.J. van. |
| Spinnen in de uiterwaarden rond zaltbommel In opdracht van Rijkswaterstaat, Directie Oost, werd door EIS-Nederland in 2001 een inventarisatie verricht in vijf uiterwaarden langs de Waal ten oosten (rechter- en linkeroever) en westen (linker-oever) van Zaltbommel. Deze inventarisatie dient als basis voor verder onderzoek naar de indicatorwaarde van ongewervelden in de uiterwaarden. De inventarisatie richtte zich op sprinkhanen, libellen, bijen, wespen, zweefvliegen en spinnen. In dit rapport worden de resultaten met betrekking tot de spinnen behandeld. De samenstelling van de spinnenfauna van de vijf uiterwaarden werd bestudeerd aan de hand van vangsten met vangpotjes. De veldperiode was beperkt tot de maanden augustus en september (2001). In totaal... |
| Tipo: Book (monograph) |
Palavras-chave: Nederland; Verspreiding; Biotopen; Ecologie; 42.74. |
| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/220034 |
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| Helsdingen, P.J. van. |
| Catalogue of the Dutch spiders (Araneae) This new catalogue is a revised edition of the catalogue of the spiders of the Netherlands of 1980. Newly published faunistic records have been added. A total of 640 species names pass in review, 20 of which (in brackets) concern former records now removed, while 10 are questionable but unverifiable (indicated with ?). Twelve species clearly introduced and not represented by viable populations outside the special anthropogenic environments, such as greenhouses, are included in the catalogue [in square brackets]. Since 1980, 77 species have been added to the Dutch faunal spider checklist. The Netherlands house the type-localities of six nominal species, now representing three recognized species (Liocranum rutilans... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Arthropoda; Aranaea; Nederland; Verspreiding; Naamlijst; 42.74. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/215299 |
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| Helsdingen, P.J. van. |
| INTRODUCTION The very small genus Stemonyphantes up to our present knowledge is restricted to the temperate regions of Europe, Asia and North America. It was created by Menge (1866) for the European species Aranea trilineata Linnaeus, 1767, which, among others, appeared to be a junior synonym of Aranea lineata Linnaeus, 1758. The species was recorded also from North America (Emerton, 1876, 1882; Keyserling, 1886; and others). For nearly seventy years the nearctic population was thought to be conspecific with the palaearctic population. Keyserling (1886) even supposed the species to have been imported by ship from Europe and to have spread from there. A detailed description of S. lineatus, furnished with excellent figures of the genitalia of the species,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/318967 |
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| Helsdingen, P.J. van. |
| Ongewervelde fauna van het Rijntakkengebied, met veldstudie in uiterwaarden rond Zaltbommel deelrapport spinnen (Araneae) In opdracht van Rijkswaterstaat, Directie Oost-Nederland, heeft de European Invertebrate Survey – Nederland in 2001 en 2002 een inventarisatie van de fauna van ongewervelden verricht in zes uiterwaarden langs de Waal rond Zaltbommel. De onderzochte uiterwaarden zijn de Hurwenensche waard, Gamerensche waard, Breemwaard, Rijswaard, Heesseltsche waard en Stiftsche waard. Het doel van dit rapport is het verschaffen van een referentiekader voor de diversiteit in soorten en biotopen in de uiterwaarden van de Rijntakken en deze te relateren aan het overstromingsregime van de rivier. Er werden waar mogelijk indicatorsoorten bepaald voor de... |
| Tipo: Book (monograph) |
Palavras-chave: Nederland; Verspreiding; Biotopen; 42.74. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/219873 |
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| Helsdingen, P.J. van. |
| During recent curatorial activities in our Calliphorid collection I came across the type-series of Calliphora nigribarbis Snellen van Vollenhoven, 1863. The series consists of four specimens, which had been labelled as syntypes by me at an earlier occasion. They belong unmistakably to one lot, although only two bear identical, original, printed labels reading "V. Siebold/Japan". All four have a second handwritten label with the scientific name, "Calliphora nigribarbis v. Voll.", and a last printed line "Coll. F. M. v. d. Wulp". These latter labels were also put on by me, in 1965, when rearranging the Diptera collection of our museum and are nothing more than an indication that the specimens concerned came from one of the old cabinets originating from, at... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.75. |
| Ano: 1980 |
URL: http://www.repository.naturalis.nl/record/318889 |
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| Helsdingen, P.J. van. |
| INTRODUCTION In this second part of my series of papers on the genus Linyphia sensu Bonnet (1957) two genera are dealt with which have been removed from Linyphia Latreille on morphological and ethological grounds. The functioning of the genitalia of one example of either genus have been described and discussed in the first part (Van Helsdingen, 1969). Though the results were not as striking as in the case of Neriene versus Linyphia, the study of the functional aspects of the genitalia have added much to the understanding of the correlations between the shapes of the different parts of the male and female secondary sexual organs. Neriene was separated from Linyphia largely on the basis of the differences in the functioning of the genitalia, as revealed in... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.75. |
| Ano: 1970 |
URL: http://www.repository.naturalis.nl/record/317862 |
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| Helsdingen, P.J. van. |
| The Australian and New Zealand regions so far were left out of consideration when studying the Linyphiidae (Linyphiinae) on a world-wide basis. When revising the genus Linyphia it appeared that a fair number of species had been described from these regions; but it also became very clear, by a superficial investigation, that these species were so completely different from our European concept of Linyphia and related genera, that they were best put aside then with a view to paying more attention to that part of the world at a later time. A small collection of Linyphiidae from Australian caves, recently received from Mrs. Barbara York Main, Nedlands, Western Australia, offered an excellent opportunity to become better acquainted with the interesting fauna of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/319354 |
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| Helsdingen, P.J. van. |
| INLEIDING De Clubionidae of Zakspinnen zijn in Nederland maar met een naar verhouding klein aantal soorten vertegenwoordigd. De Subtropen en Tropen bezitten een veel grotere soortenrijkdom. In ons land is tot nu toe het voorkomen van 31 soorten uit 6 genera met zekerheid vastgesteld. Opvallend zijn de Clubionidae niet te noemen. Over het algemeen zijn het nachtdieren, die zich overdag in hun dicht geweven cellen onder boomschors en stenen, tussen bladeren en andere plantendelen, en in de strooisellaag ophouden. De dichtheid van voorkomen is laag, op enkele uitzonderingen na: Clubiona compta C. L. Koch kan men in de winter als subadult vaak in groten getale bijeen onder boomschors aantreffen; Clubiona phragmitis C. L. Koch kan in rietvegetaties massaal... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/317213 |
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| Helsdingen, P.J. van. |
| In the present paper a revision is given of the Dutch material of two families of spiders in the van Hasselt Collection, viz., the Micryphantidae and the Linyphiidae. The greater part of the specimens have been collected by van Hasselt himself or by his family. Other well-known collectors, as Everts, ter Haar and Leesberg, also used to send him material. It is of further interest that van Hasselt has been in regular contact with Blackwall, Thorell, and Simon, important contemporary araneologists. Van Hasselt started to publish the results of his intensive collecting in the Tijdschrift voor Entomologie, as reports of his excursions; later, in 1885 and 1886, he composed a Catalogue of spiders collected in the Netherlands, which can be found in the same... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1961 |
URL: http://www.repository.naturalis.nl/record/319168 |
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| Registros recuperados: 23 | |
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