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  1. Article ; Online: Checklist of the spiders (Araneae) of South Africa

    Dippenaar-Schoeman, Ansie S. / Haddad, Charles R. / Lotz, Leon N. / Booysen, Ruan / Steenkamp, Rudolph C. / Foord, Stefan H.

    African Invertebrates. 2023 Nov. 14, v. 64, no. 3 p.221-289

    2023  

    Abstract: AbstractA checklist of 2265 spider species and subspecies, 495 genera and 71 families is provided. Data were extracted from the South African National Survey of Arachnida database and over 200 taxonomic revisions, ending December 2022. Global ... ...

    Abstract AbstractA checklist of 2265 spider species and subspecies, 495 genera and 71 families is provided. Data were extracted from the South African National Survey of Arachnida database and over 200 taxonomic revisions, ending December 2022. Global distributions, endemicity and conservation assessment using IUCN Criteria are provided for each species. A total of 1325 spp. are endemic to South Africa (58.5%), 126 spp. (5.6%) are of special concern and 693 spp. (30.6%) are Data Deficient (DD), while 15 species were described without exact locality data. Most species (1444 spp., 63.8%) are widely distributed with no known threats and are of Least Concern. A total of 1316 spp. (57.6%) are known from both sexes and 23 spp. (1.0%) were described from juveniles. Salticidae is the most species-rich family (354 spp.), followed by Gnaphosidae (195 spp.), Thomisidae (143 spp.) and Araneidae (100 spp.) and ten families are represented by a single species.
    Keywords Araneidae ; Gnaphosidae ; Salticidae ; Thomisidae ; databases ; indigenous species ; national surveys ; spiders ; South Africa ; Conservation status ; endemicity ; faunistic surveys ; global distribution ; provincial ; sample bias ; SANSA ; South African National Survey of Arachnida
    Language English
    Dates of publication 2023-1114
    Size p. 221-289.
    Publishing place Pensoft Publishers
    Document type Article ; Online
    ZDB-ID 2525413-3
    ISSN 2305-2562 ; 1681-5556
    ISSN (online) 2305-2562
    ISSN 1681-5556
    DOI 10.3897/AfrInvertebr.64.111047
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Revision of the spider genus Mystaria Simon, 1895 (Araneae: Thomisidae) and the description of a new genus from the Afrotropical region.

    Lewis, Allet S Honiball / Dippenaar-Schoeman, Ansie S

    Zootaxa

    2014  Volume 3873, Issue 2, Page(s) 101–144

    Abstract: The spider genera Mystaria Simon, 1895 and Paramystaria Lessert, 1919 are revised (Mystarini: Thomisidae). About 400 individuals were studied. The approach followed was classical taxonomy using illustrated sexual dimorphic copulatory characters and ... ...

    Abstract The spider genera Mystaria Simon, 1895 and Paramystaria Lessert, 1919 are revised (Mystarini: Thomisidae). About 400 individuals were studied. The approach followed was classical taxonomy using illustrated sexual dimorphic copulatory characters and described morphological characters, photographed or measured. Paramystaria is considered a junior synonym of Mystaria, based on similarity to the type M. rufolimbata Simon, 1895 but with the exclusion of M. unicolor Simon, 1895, a species last studied in 1895. Mystaria unicolor is re-described and placed in a new genus, Leroya gen. n., together with L. silva sp. n. (♂♀, DRC) which is recognised as the type species. Mystaria now contains 13 well-defined species, four of which are in new generic combinations. Four males are described for the first time, and eight new species. Re-described species include M. flavoguttata Lawrence, 1952, M. lata Lawrence, 1927, M. rufolimbata and M. variabilis Lessert, 1919. Subspecies elevated to species level include M. occidentalis Millot, 1942 and new species descriptions include M. budongo sp. n. (♂, Rwanda, DRC, Uganda), M. irmatrix sp. n. (♀♂, Mozambique, South Africa) M. lindaicapensis sp. n. (♀♂, South Africa), M. mnyama sp. n. (♀♂, South Africa), M. oreadae sp. n. (♀, Rwanda, DRC), M. savannensis sp. n. (♀♂, Botswana, South Africa, Zambia, Zimbabwe), M. soleil sp. n. (♀♂, Uganda, Kenya) and M. stakesbyi sp. n. (♀♂, Ghana, DRC, Kenya, Rwanda, Tanzania, Uganda). The insufficiently known taxa Paramystaria decorata Lessert, 1919 and P. variabilis delesserti Caporiacco, 1949 are also transferred to Mystaria. Keys are provided to species and related tribal genera, with geographic distributions of species recorded. Revisions of more genera are needed, in particular of those genera related to Mystarini, before phylogenetic relationships can be considered.
    MeSH term(s) Africa ; Animal Distribution ; Animal Structures/anatomy & histology ; Animal Structures/growth & development ; Animals ; Body Size ; Ecosystem ; Female ; Male ; Organ Size ; Spiders/anatomy & histology ; Spiders/classification ; Spiders/growth & development
    Language English
    Publishing date 2014-10-15
    Publishing country New Zealand
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1175-5334
    ISSN (online) 1175-5334
    DOI 10.11646/zootaxa.3873.2.1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Aspects of the Ecology and Behaviour of the Seychelles Theraphosid Nesiergus insulanus (Arachnida: Araneae: Theraphosidae)

    Canning, Gregory / Dippenaar-Schoeman Ansie S / Reilly Brian Kevin

    Journal of East African natural history. 2015, v. 56, no. 1

    2015  

    Abstract: Aspects of the ecology and life history of the little known theraphosid Nesiergus insulanus are determined on Frégate Island in the Seychelles archipelago. The general behaviour of this species is revealed to be comparable to that of other theraphosids, ...

    Abstract Aspects of the ecology and life history of the little known theraphosid Nesiergus insulanus are determined on Frégate Island in the Seychelles archipelago. The general behaviour of this species is revealed to be comparable to that of other theraphosids, with field and captive observations establishing that they are a generalist and opportunistic species. The defensive behaviour of the species is determined to be based primarily on the avoidance of conflict situations, with overt aggressive behaviour seldom displayed. Although the opportunistic existence that this species has developed is probably obligatory due to their sedentary lifestyle and limited availability of resources, this behaviour nonetheless allows the species to occupy diverse habitats and exploit niches unavailable to more specialized species.
    Keywords aggression ; defensive behavior ; habitats ; life history ; sedentary lifestyle ; Theraphosidae ; Seychelles
    Language English
    Size p. 167-180.
    Publishing place Natal Museum
    Document type Article
    ISSN 2224-8862
    DOI 10.5733%2Fafin.056.0113
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Insights into the karyotype and genome evolution of haplogyne spiders indicate a polyploid origin of lineage with holokinetic chromosomes.

    Král, Jiří / Forman, Martin / Kořínková, Tereza / Lerma, Azucena C Reyes / Haddad, Charles R / Musilová, Jana / Řezáč, Milan / Herrera, Ivalú M Ávila / Thakur, Shefali / Dippenaar-Schoeman, Ansie S / Marec, František / Horová, Lucie / Bureš, Petr

    Scientific reports

    2019  Volume 9, Issue 1, Page(s) 3001

    Abstract: Spiders are an ancient and extremely diverse animal order. They show a considerable diversity of genome sizes, karyotypes and sex chromosomes, which makes them promising models to analyse the evolution of these traits. Our study is focused on the ... ...

    Abstract Spiders are an ancient and extremely diverse animal order. They show a considerable diversity of genome sizes, karyotypes and sex chromosomes, which makes them promising models to analyse the evolution of these traits. Our study is focused on the evolution of the genome and chromosomes in haplogyne spiders with holokinetic chromosomes. Although holokinetic chromosomes in spiders were discovered a long time ago, information on their distribution and evolution in these arthropods is very limited. Here we show that holokinetic chromosomes are an autapomorphy of the superfamily Dysderoidea. According to our hypothesis, the karyotype of ancestral Dysderoidea comprised three autosome pairs and a single X chromosome. The subsequent evolution has frequently included inverted meiosis of the sex chromosome and an increase of 2n. We demonstrate that caponiids, a sister clade to Dysderoidea, have enormous genomes and high diploid and sex chromosome numbers. This pattern suggests a polyploid event in the ancestors of caponiids. Holokinetic chromosomes could have arisen by subsequent multiple chromosome fusions and a considerable reduction of the genome size. We propose that spider sex chromosomes probably do not pose a major barrier to polyploidy due to specific mechanisms that promote the integration of sex chromosome copies into the genome.
    MeSH term(s) Animals ; Evolution, Molecular ; Genome ; Karyotype ; Meiosis ; Polyploidy ; Spiders/genetics
    Language English
    Publishing date 2019-02-28
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-019-39034-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book: Spider families of the world

    Jocqué, Rudy / Dippenaar-Schoeman, Ansie S

    2007  

    Author's details R. Jocqué; A. S. Dippenaar-Schoeman
    Keywords Spiders
    Language English
    Size 336 S., zahlr. Ill.
    Edition 2. ed.
    Publisher Koninklijk Museum voor Midden-Afrika
    Publishing place Tervuren
    Document type Book
    Note Literaturverz. S. 277 - 294
    ISBN 9789074752114 ; 907475211X
    Database Former special subject collection: coastal and deep sea fishing

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  6. Book: Baboon and trapdoor spiders of Southern Africa

    Dippenaar-Schoeman, Ansie S

    an identification manual

    (Plant Protection Research Institute Handbook ; 13)

    2002  

    Author's details A. S. Dippenaar-Schoeman; Rudy Jocqué
    Series title Plant Protection Research Institute Handbook ; 13
    Language English
    Size 128 S, Ill., graph. Darst
    Publisher ARC Plant Protection Research Inst
    Publishing place Pretoria
    Document type Book
    Note Literaturverz. S. [116] - 121
    Accompanying material Mit 1 CD-ROM
    ISBN 1868492001 ; 9781868492008
    Database Former special subject collection: coastal and deep sea fishing

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  7. Article: Spider responses to alien plant invasion: the effect of short- and long-term Chromolaena odorata invasion and management

    Mgobozi, Mandisa P / Somers, Michael J / Dippenaar-Schoeman, Ansie S

    Journal of applied ecology. 2008 Aug., v. 45, no. 4

    2008  

    Abstract: 1. Invasions by alien plants into unspoiled ecosystems are a cause for concern because the pristine systems are important stores of biodiversity. Indeed, the introduction of non-indigenous species into protected areas is a direct threat to conservation. ... ...

    Abstract 1. Invasions by alien plants into unspoiled ecosystems are a cause for concern because the pristine systems are important stores of biodiversity. Indeed, the introduction of non-indigenous species into protected areas is a direct threat to conservation. Consequently, it is fundamental to document the impact that alien invasive plants have on native communities and to determine if, and at what rate, native communities re-establish following the removal of invasives. 2. Chromolaena odorata is one of the most important invader species in the savanna biome in South Africa. It reduces vegetation heterogeneity in grasslands, savannas and forests. 3. Spiders, as ecological indicators for change, were used to investigate the impact of (i) C. odorata invasions, (ii) C. odorata invasion durations, and (iii) the impact of clearing C. odorata on abundance, assemblage patterns, diversity and estimated species richness of spiders. 4. The progressive invasion of C. odorata with increasing invasion duration brings with it changes in native spider abundance, assemblage patterns, diversity and estimated species richness. Native spider assemblages do re-establish after clearing C. odorata without further management intervention. Small lingering differences are observed between the native and the cleared sites, suggesting that other features of the habitat may have been affected by the invasion and clearing. 5. Synthesis and applications. Alien clearance is an essential and invaluable management tool. There are a substantial number of programmes that aim to control alien invasive plants but very little is known about the way in which biodiversity recovers after alien plant removal. Our data show that the removal of alien invasive plants benefits biodiversity with immediate effects, highlighting that management should be carried out to control this invasive, even if the area has been invaded for a long period of time. These data are important for policy-forming and informing policy-makers that alien invasion and removal are critical for biodiversity conservation management.
    Keywords Chromolaena odorata ; invasive species ; weeds ; ecological invasion ; weed control ; Araneae ; indicator species ; population size ; species diversity ; community structure ; South Africa
    Language English
    Dates of publication 2008-08
    Size p. 1189-1197.
    Publisher Blackwell Publishing Ltd
    Publishing place Oxford, UK
    Document type Article
    ZDB-ID 410405-5
    ISSN 1365-2664 ; 0021-8901
    ISSN (online) 1365-2664
    ISSN 0021-8901
    DOI 10.1111/j.1365-2664.2008.01486.x
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 4229: Show issues
    II a 5, 18724: Show issues

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  8. Article: Associations of Spiders of the Genus Peucetia (Oxyopidae) with Plants Bearing Glandular Hairs

    Vasconcellos-Neto, João / Romero, Gustavo Q / Santos, Adalberto J / Dippenaar-Schoeman, Ansie S

    Biotropica. 2007 Mar., v. 39, no. 2

    2007  

    Abstract: Two common South American species of lynx spiders, Peucetia rubrolineata and P. flava (Oxyopidae), were surveyed on three localities in southeastern Brazil to determine plant choice. Both species were found to be associated with plants bearing glandular ... ...

    Abstract Two common South American species of lynx spiders, Peucetia rubrolineata and P. flava (Oxyopidae), were surveyed on three localities in southeastern Brazil to determine plant choice. Both species were found to be associated with plants bearing glandular trichomes. A literature review and complementary data show that ten Peucetia species are associated with up to 55 plant species bearing glandular trichomes in at least 20 distinct vegetation types (phytophysiognomies) in more than 36 localities in the Neotropical, Neartic, Afrotropical, and Paleartic regions. The main plant families used by the spiders were Solanaceae, Asteraceae, and Melastomataceae. The specialization of the Peucetia species for plants bearing glandular trichomes may have evolved because insects adhered to these sticky structures may be used as prey by the spiders.
    Keywords evolution ; foraging
    Language English
    Dates of publication 2007-03
    Size p. 221-226.
    Publishing place Blackwell Publishing Inc
    Document type Article
    ZDB-ID 2052061-X
    ISSN 1744-7429 ; 0006-3606
    ISSN (online) 1744-7429
    ISSN 0006-3606
    DOI 10.1111/j.1744-7429.2006.00250.x
    Database NAL-Catalogue (AGRICOLA)

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  9. Book ; Audio / Video: Medically important spiders and scorpions of Southern Africa

    Dippenaar-Schoeman, Ansie S / Müller, G. J

    (Plant Protection Research Institute CD-Series ; 1.1)

    2000  

    Author's details Ansie S. Dippenaar-Schoeman ; G. J. Müller
    Series title Plant Protection Research Institute CD-Series ; 1.1
    Language English
    Size 12 cm
    Edition CD-ROM ed
    Publisher ARC Plant Protection Research Inst
    Publishing place Pretoria
    Document type Book ; Audio / Video
    ISBN 1868491404 ; 9781868491407
    Database Former special subject collection: coastal and deep sea fishing

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  10. Book: African spiders

    Dippenaar-Schoeman, Ansie S / Jocqué, R

    an identification manual

    (Plant Protection Research Institute handbook ; no. 9)

    1997  

    Author's details A.S. Dippenaar-Schoeman, R. Jocqué
    Series title Plant Protection Research Institute handbook ; no. 9
    Keywords Spiders
    Language English
    Size 392 p. :, ill., map ;, 26 cm.
    Publisher ARC-Plant Protection Research Inst., Biosystematics Division, National Collection of Arachnida
    Publishing place Pretoria
    Document type Book
    ISBN 0621175447 ; 9780621175448
    Database NAL-Catalogue (AGRICOLA)

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