ORCID Profile
0000-0002-0623-1622
Current Organisations
Rhodes University
,
Delft University of Technology
,
Murdoch University
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Publisher: Informa UK Limited
Date: 13-01-2022
Publisher: Atlas of Living Australia
Date: 07-12-2022
DOI: 10.54102/AJT.A7OQ2
Abstract: A new monotypic Australian genus in the orb-weaving spider family Araneidae Clerck, 1757 is described, Quokkaraneus gen. nov., with Q. necopinus (Keyserling, 1887) comb. nov. as type species. Morphologically the new genus has affinities with the Australasian clade informally termed 'backobourkiines', due to the presence of a single patellar macroseta and the median apophysis forming an arch over the radix in the male pedipalp. It distinctly differs from other genera of this clade by somatic characters, such as a unique white cephalic and/or thoracic area and abdomen. Some genitalic characters are also diagnostic amongst the backobourkiines, such as a C-shaped median apophysis with pointed tip, triangular terminal apophysis and prominent concave conductor in males, and a very broad female epigyne scape. Quokkaraneus necopinus comb. nov. occurs in southern Australia, from western Victoria to south-western Western Australia.
Publisher: Arachology
Date: 12-03-2021
Publisher: Pensoft Publishers
Date: 22-10-2019
DOI: 10.3897/ZSE.95.36762
Abstract: We newly diagnose, illustrate, and clarify the distribution ranges of six of the most common and broadly distributed species of Tetragnatha Latreille, 1804 found in the Neotropical region. Twenty new junior synonyms from around the world are included, nine for T. bogotensis Keyserling, 1865, four for T. mandibulata Walckenaer, 1841, three for T. keyserlingi Simon, 1890, three for T. nitens (Audouin, 1826), and one for T. elongata Walckenaer, 1841. Tetragnatha vermiformis Emerton, 1884 is newly recorded from South America. The Argentine T. major Holmberg, 1876 and T. riparia Holmberg, 1876 are considered nomina dubia. Finally, we discuss the terminology of the structures of the chelicerae to establish a coherent nomenclature for teeth and fang cusps.
Publisher: Pensoft Publishers
Date: 26-07-2021
DOI: 10.3897/ZSE.97.67788
Abstract: The orb-weaving spider genus Novakiella Court & Forster, 1993 (family Araneidae Clerck, 1757) is reviewed to include two species, N. trituberculosa (Roewer, 1942) (type species, Australia and New Zealand) and N. boletus sp. nov. (Australia). Novakiella belongs to the informal, largely Australian ‘backobourkiine’ clade and shares with the other genera of the clade a single macroseta on the male pedipalp patella and a median apophysis of the male pedipalp that forms an arch over the radix. The proposed genus synapomorphies are the presence of a large basal conductor lobe expanding apically over the radix and the shape of the median apophysis, which extends into a basally directed, pointy projection. Males have an apico-prolateral spur on the tibia of the second leg that carries a distinct spine. Females have an epigyne with triangular base plate bearing transverse ridges and an elongate triangular scape, which is almost always broken off. The humeral humps of the abdomen are distinct. Novakiella trituberculosa build characteristic dome-shaped webs however, the foraging behaviour and web-shape of N. boletus sp. nov ., currently only known from museum specimens, are not known.
Publisher: FapUNIFESP (SciELO)
Date: 09-2015
DOI: 10.1590/1678-476620151053372375
Abstract: ABSTRACT Alpaida venger sp. nov. is described based on males and females from Pedra Branca State Park, Rio de Janeiro, Brazil. This species seems to be related to Alpaida scriba (Mello-Leitão, 1940) and Alpaida alticeps (Keyserling, 1879) due to similar body shape and color, but is easily distinguished by the very elongated median apophysis, the massive lobe of tegulum and the hooked paracymbium of male palp. Females have elongated epigyne as A. scriba, but can be distinguished by the wider lips and shorter scape.
Publisher: Magnolia Press
Date: 30-04-2020
DOI: 10.11646/ZOOTAXA.4768.1.4
Abstract: New data about slender orb-weaving species of the cosmopolitan genus Tetragnatha are presented. Tetragnatha chauliodus (Thorell, 1890) and Tetragnatha tenuissima O. Pickard-Cambridge, 1889 are redescribed, including one synonymy for each species and the first record of the first species to the Neotropical region. Also, three new species are herein described, all based on males and females. Tetragnatha megalocera new species is recorded exclusively from Brazil (Espírito Santo, Rio de Janeiro, Rio Grande do Sul and São Paulo states), while Tetragnatha renatoi new species is recorded from Venezuela, Argentina (Misiones) and Brazil (Paraná, Pernambuco, Rio Grande do Sul, Rondônia, Santa Catarina and São Paulo states). Finally, Tetragnatha chiyokoae new species is described from Yunnan province (China) and Okinawa (Japan), with an additional record for Taiwan. Furthermore, Tetragnatha exilima (Mello-Leitão, 1943), Tetragnatha filigastra Mello-Leitão, 1943 and Tetragnatha lactescens (Mello-Leitão, 1947) are nomina dubia.
Publisher: Magnolia Press
Date: 11-04-2018
DOI: 10.11646/ZOOTAXA.4407.3.2
Abstract: Four new species of the orb-weaving spider genus Alpaida O. P.-Cambridge, 1889 from Rio de Janeiro state, Brazil are illustrated and described based on males and females from the following municipalities: Alpaida imperatrix new species (Macaé and Rio de Janeiro) Alpaida imperialis new species (Mendes and Rio de Janeiro) Alpaida marista new species (Mendes and Pinheiral) and Alpaida mendensis new species (Mendes). Furthermore, two new synonymies are herein proposed: Alpaida lanei Levi, 1988 = Alpaida atomaria (Simon, 1895) and Alpaida caxias Levi, 1988 = Alpaida tijuca Levi, 1988, alongside new records for both species and also Alpaida venger Castanheira & Baptista, 2015.
Publisher: Pensoft Publishers
Date: 15-01-2016
DOI: 10.3897/BDJ.4.E7055
Publisher: Museum National D'Histoire Naturelle
Date: 07-07-2016
DOI: 10.5852/EJT.2016.210
Publisher: Springer Science and Business Media LLC
Date: 14-06-2021
DOI: 10.1007/S00427-021-00678-9
Abstract: The homology of the arachnid chelicera with respect to other head appendages in Panarthropoda has long been debated. Gene expression data and the re-interpretation of early transitional fossils have supported the homology of the deutocerebrum and its associated appendages, implying a homology between primary antennae (mandibulates), chelicerae (euchelicerates), and chelifores (sea spiders). Nevertheless, comparatively little is known about the mechanistic basis of proximo-distal (PD) axis induction in chelicerates, much less the basis for cheliceral fate specification. Here, we describe a new cheliceral teratology in the spider Tetragnatha versicolor Walckenaer, 1841, which consists on a duplication of the PD axis of the left chelicera associated with a terminal secondary schistomely on the fang of the lower axis. This duplication offers clues as to potential shared mechanisms of PD axis formation in the chelicera. We review the state of knowledge on PD axis induction mechanisms in arthropods and identify elements of gene regulatory networks that are key for future functional experiments of appendage development in non-insect model systems. Such investigations would allow a better understanding of PD axis induction of modified and poorly studied arthropod limbs (e.g., chelicerae, chelifores, and ovigers).
Publisher: Magnolia Press
Date: 10-02-2023
DOI: 10.11646/ZOOTAXA.5239.3.1
Abstract: A key to the six Australian genera of the wolf spider (Lycosidae Sundevall, 1833) subfamily Artoriinae Framenau, 2007 is provided, now including Artoria Thorell, 1877, Artoriopsis Framenau, 2007, Diahogna Roewer, 1960, Kangarosa Framenau, 2010, Kochosa gen. nov. and Tetralycosa Roewer, 1960. Kochosa gen. nov. is described to include 16 species: K. australia sp. nov. (type species from New South Wales, Queensland, South Australia, Victoria, Western Australia), K. aero sp. nov. (Western Australia), K. asterix sp. nov. (New South Wales, Queensland, Tasmania and Victoria), K. confusa sp. nov. (Queensland), K. erratum sp. nov. (Queensland), K. fleurae sp. nov. (Victoria), K. mendum sp. nov. (Australian Capital Territory, New South Wales, Queensland), K. nigra sp. nov. (Queensland), K. obelix sp. nov. (Western Australia), K. queenslandica sp. nov. (Queensland), K. sharae sp. nov. (South Australia), K. tanakai sp. nov. (New South Wales, Queensland), K. tasmaniensis sp. nov. (Tasmania), K. timwintoni sp. nov. (Western Australia), K. tongiorgii sp. nov., (Queensland), and K. westralia sp. nov. (Western Australia). Kochosa gen. nov. differs distinctly from all other genera within the Artoriinae by somatic and genitalic morphology. Most conspicuous is a distinct off-white or yellowish-white cardiac mark on an otherwise generally uniformly dark abdomen. The cardiac mark is rendered by thick black setae, which are particularly dense posteriorly. The tegular apophysis of the male pedipalp is heavily reduced, generally forming a semi-transparent small lobe. In turn, the embolic ision is often complex with a variety of apophyses. Kochosa gen. nov. generally inhabit mesic habitats such as temperate and tropical shrubs and forests along the eastern and south-eastern coast and in the south-western parts of Australia.
Publisher: Pensoft Publishers
Date: 21-10-2022
Abstract: Five new species in the long-jawed orb-weaving spider genus Tetragnatha Latreille, 1804 are described from South America: Tetragnatha amazonica sp. nov. (Venezuela) T. cristata sp. nov. (Argentina and Brazil) T. didorata sp. nov. (Brazil) T. oncognatha sp. nov. (Brazil) and T. pradoi sp. nov. (Argentina and Brazil). A key to the 21 species of Tetragnatha from Argentina and Brazil is provided, completing the revision of the genus for these countries. The female of T. cladognatha Bertkau, 1880 is redescribed and a neotype is proposed, and its male is described for the first time. Additionally, we update the taxonomic status of the following six South American species: Tetragnatha labialis Nicolet, 1849 and T. americana Simon, 1896 are considered new junior synonymies of T. nitens (Audouin, 1826) and Tetragnatha bishopi Caporiacco, 1947, T. linearis Nicolet, 1849, T. similis Nicolet, 1849 and T. sternalis Nicolet, 1849 are proposed as nomina dubia due to missing or juvenile type-material.
Publisher: Pensoft Publishers
Date: 20-05-2022
DOI: 10.3897/ZOOKEYS.1102.82388
Abstract: A new Australasian genus in the orb-weaving spider family Araneidae Clerck, 1757 is described to include seven species: Salsa fuliginata (L. Koch, 1871) comb. nov. (type species = Epeira rubicundula Keyserling, 1887) syn. nov. ) (Australia, introduced to New Zealand) S. brisbanae (L. Koch, 1867) comb. nov. (Australia) S. canalae (Berland, 1924) comb. nov. (New Caledonia) S. neneba sp. nov. (Papua New Guinea) S. recherchensis (Main, 1954) comb. nov. (Australia) S. rueda sp. nov. (Australia) and S. tartara sp. nov. (Australia Lord Howe Island endemic). Salsa gen. nov. belongs to the Australasian informal backobourkiine clade and differs from other genera of this clade by a distinct abdominal shape (single posterior abdominal tubercle) and ventral colouration (pale lateral spindle-shaped bands), male pedipalp morphology (C-shaped median apophysis that has teeth-like tubercles inside the basal arch) and the shape of the female epigyne scape (partially translucent and generally shorter than the epigyne plate). Based mainly on male pedipalp morphology within the backobourkiines, Salsa gen. nov. has closest morphological affinities with Acroaspis Karsch, 1878 and Socca Framenau, Castanheira & Vink, 2022.
Publisher: Pensoft Publishers
Date: 16-01-2023
Abstract: A new monotypic genus in the orb-weaving spider family Araneidae Clerck, 1757 is described from Australia: Abba gen. nov. , with Abba transversa (Rainbow, 1912) comb. nov. as the type species. It differs from all other genera in the family by somatic characters, specifically a patch of approximately five long spines on the prolateral surface of the first leg in males and an abdominal colouration with a pair of two central spots dorsally on a creamy-white surface. Specimens of A. transversa comb. nov. have been collected in Queensland and New South Wales, where the species is largely summer-mature. We also provide a genus level summary of all Australian Araneidae, currently consisting of 230 described species and eight subspecies in 46 genera.
Publisher: Informa UK Limited
Date: 16-12-2020
Publisher: Pensoft Publishers
Date: 24-02-2020
DOI: 10.3897/ZSE.96.46509
Abstract: New data on the jumping-spider genus Arnoliseus are presented. Three new species from the Atlantic Forest in Rio de Janeiro state are described, based on both sexes: Arnoliseus carioca sp. nov. from the city of Rio de Janeiro, and Arnoliseus hastatus sp. nov. and Arnoliseus falcatus sp. nov. from the municipality of Cachoeiras de Macacu. The genus’ genital morphology is discussed in detail and new English terminology for their structures is created. An identification key for all Arnoliseus species is given.
Publisher: Atlas of Living Australia
Date: 06-10-2023
DOI: 10.54102/AJT.GCXTP
Publisher: Berghahn Books
Date: 03-2010
Abstract: This article presents the reframing of flood management practices in the light of social-ecological systems governance. It presents an exploratory theoretical analysis of social-ecological systems (SES) governance complemented by insights from case study analysis. It identifies a mismatch between the goals of the underlying ecosystem paradigms and their manifestation in management practice. The Polder Altenheim case study is an illustration of the consequences of flood management practices that do not match their underlying paradigm. The article recommends two institutional arrangements that will allow institutions to increase their capacity to co-evolve with SES dynamics: (a) institutional arrangements to ensure and enable openness in actor participation, and (b) institutional arrangements to enable updating of the management practices in response to SES dynamics.
Publisher: Magnolia Press
Date: 20-01-2022
DOI: 10.11646/ZOOTAXA.5092.3.6
Abstract: Two new species in the orb-weaving spider genus Larinia Simon, 1874 are described, L. sexta n. sp. and L. tumulus n. sp. This elevates the Australian number of described species in the genus to seven. With the exception of two females of L. sexta n. sp. recorded from mainland Western Australia, both species have so far exclusively been found on Barrow Island, 50 km off the north-western Western Australian coast where a third species, L. montagui Hogg, 1914, also occurs. Both new species appear to favour spinifex (Triodia spp.) grassland, but specimen numbers in collections are too low to accurately characterize life history patterns and habitat preferences.
Publisher: Magnolia Press
Date: 20-08-2019
DOI: 10.11646/ZOOTAXA.4657.3.6
Abstract: Three new species of the six-eyed haplogyne and ecribellate spiders from the genus Ochyrocera Simon, 1891 are illustrated and described based on males and females from southeastern Brazil: Ochyrocera tinocoi new species (Sooretama, Espírito Santo state), Ochyrocera garayae new species (Linhares and Sooretama, Espírito Santo state) and Ochyrocera itatinga new species (Rio de Janeiro city, Rio de Janeiro state). The new species expand the distribution range of Ochyrocera in Brazil and increase to 50 the total number of species described, from which hitherto 33 species occur in South America, acknowledging the high ersity of the genus for the region.
Publisher: Pensoft Publishers
Date: 04-09-2023
Publisher: American Arachnological Society
Date: 11-03-2022
DOI: 10.1636/JOA-S-21-006
Publisher: Pensoft Publishers
Date: 02-11-2021
Abstract: The new genus Hortophora in the orb-weaving spider family Araneidae Clerck, 1757 is established to include 13 species from the Australasian-Pacific region, with ten species known from Australia (five of which new to science): Hortophora biapicata (L. Koch, 1871), comb. nov. (type species) (= Araneus biapicatifera Strand, 1907, syn. nov. = Epeira frosti Hogg, 1896, syn. nov. ) H. cucullus sp. nov. H. lodicula (Keyserling, 1887), comb. nov. (= Epeira scutigerens Hogg, 1900, syn. nov. ) H. megacantha sp. nov. H. porongurup sp. nov. H. tatianeae sp. nov. H. transmarina (Keyserling, 1865), comb. nov. ) (also known from Papua New Guinea) H. urbana (Keyserling, 1887), comb. nov. H. walesiana (Karsch, 1878), comb. nov. (= Epeira rhombocephala Thorell 1881, syn. nov. = Epeira lutulenta Keyserling, 1886, syn. nov. ) and H. yesabah sp. nov. The following species of Hortophora gen. nov. are recognised from the Pacific region but not revised in detail due to a lack of material, specifically mature males: Hortophora capitalis (L. Koch, 1871), comb. nov. (removed from synonymy with H. transmarina comb. nov. ) from Fiji, New Caledonia and Vanuatu H. flavicoma (Simon, 1880), comb. nov. from New Caledonia (incl. Loyalty Islands) and H. viridis (Keyserling, 1865), comb. nov. (removed from synonymy with H. transmarina comb. nov. ) from Samoa. Epeira thyridota Thorell, 1870 is here removed from synonymy with H. transmarina comb. nov. and transferred to Backobourkia Framenau, Dupérré, Blackledge & Vink, 2010, B. thyridota (Thorell, 1870), comb. nov. Hortophora gen. nov. includes medium-sized to large, nocturnal orb-weaving spiders typically with subtriangular to ovoid abdomen bearing humeral humps. The tibiae of the second leg in males is usually enlarged with numerous strong spines and an apico-ventral megaspur carrying a large spine in some species. Male pedipalps generally have an elongated, transverse median apophysis ending in a bifid tip in most species, a sinuous to straight embolus and a bubble-shaped terminal apophysis. The female epigyne scape is highly elongated and does not have a terminal pocket. Genital mutilation, i.e. breaking off the epigyne scape during copulation, is common in some species. Hortophora gen. nov. include the most frequently collected nocturnal orb-weaving spiders in Australia.
Publisher: Magnolia Press
Date: 06-12-2019
DOI: 10.11646/ZOOTAXA.4706.1.6
Abstract: The scorpion-tailed orb-weaving spiders in the genus Arachnura Vinson, 1863 (Araneidae Clerck, 1757) are revised for Australia and New Zealand. Arachnura higginsii (L. Koch, 1872) only occurs in Australia and A. feredayi (L. Koch, 1872) only in New Zealand. A single female collected in south-eastern Queensland (Australia) is here tentatively identified as A. melanura Simon, 1867, but it is doubtful that this species has established in Australia. Two juveniles from northern Queensland do not conform to the diagnoses of any of the above species and are illustrated pending a more thorough revision of the genus in South-East Asia and the Pacific region. An unidentified female from Westport (New Zealand) does not conform to the diagnoses of A. feredayi and A. higginsii, but is not described due to its poor preservation status. Arachnura caudatella Roewer, 1942 (replacement name for Epeira caudata Bradley, 1876), originally described from Hall Sound (Papua New Guinea) and repeatedly catalogued for Australia, is considered a nomen dubium.
Publisher: Pensoft Publishers
Date: 31-05-2023
Abstract: A new Australian genus in the orb-weaving spider family Araneidae Clerck, 1757 is described, Kangaraneus gen. nov. , with K. arenaceus (Keyserling, 1886) comb. nov. (New South Wales, Queensland, South Australia, Victoria and Western Australia) as the type species and also including two other species: Kangaraneus amblycyphus (Simon, 1908) comb. nov. (Australian Capital Territory, New South Wales, Queensland, South Australia, Victoria and Western Australia) and K. farhani sp. nov. (Australian Capital Territory, New South Wales, South Australia, Victoria and Tasmania). The new genus is included in the informally termed Australasian ‘backobourkiine’ clade due to the presence of its putative synapomorphies, specifically a single patellar macroseta on the male pedipalp and its median apophysis forming an arch over the radix. It includes medium-sized orb-weaving spiders (total length 3–12 mm) with distinct humeral humps on the almost triangular abdomen. Therefore, within the backobourkiines, it is somatically most similar to Novakiella Court & Forster, 1993 but differs considerably in male genitalic characters, including a C-shaped median apophysis with an acute tip. Genitalia are most similar to those in Quokkaraneus Castanheira & Framenau, 2023 from which the new genus differs by the lack of the white colouration and the shape of the abdomen.
Publisher: Atlas of Living Australia
Date: 13-07-2023
DOI: 10.54102/AJT.V3ZYT
Abstract: A second species in the spider genus Magnopholcomma Wunderlich, 2008 (family Theridiidae Sundevall, 1833) is described based on a male found at Fortescue Bay in Tasman National Park (Tasmania, Australia). The genus differs from all other genera in the family by somatic characters, specifically the large globular clypeal outgrowth. Magnopholcomma adelphus sp. n. differs from M. globulus Wunderlich, 2008 by somatic and genitalic characters, especially the larger clypeal outgrowth, an inconspicuous fovea, pedipalp with longer tibia, median apophysis strongly basally projected and apical lobe of theridiid tegular apophysis un ided. The genus genital morphology and its systematic position in Pholcommatinae are also discussed, stabilizing the inconsistent nomenclature of sclerites of the male pedipalp (e.g., the interpretation of the theridiid terminal apophysis) of members of the subfamily.
Publisher: Pensoft Publishers
Date: 05-05-2022
DOI: 10.3897/ZSE.98.82649
Abstract: The new Australian orb-weaving spider genus Mangrovia in the family Araneidae Clerck, 1757 is described. It is characterised by extreme sexual size-dimorphism (eSSD) with females (total length 8–10 mm) ca. 3 to 5 times larger than males (2.5–3 mm). Whilst Mangrovia shares with the informal Australian ‘backobourkiine’ clade a single seta on the male pedipalp patella, the genus is probably more closely related to the ‘zealaraneines’ or associated genera. In addition to eSSD and the single patellar spine, the genus is characterised by a distinct subterminal embolus branch in males. The new genus includes two species: the type species Mangrovia albida (L. Koch, 1871) comb. nov. (= Epeira fastidiosa Keyserling, 1887, new syn. ) from Queensland and Mangrovia occidentalis sp. nov. from Western Australia. Both species are apparently coastal and occur in mangroves, but also in riparian woodland. Spiders were found resting in rolled-up leaves adjacent to their orb-web.
No related grants have been discovered for Pedro Castanheira.