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How Non-Nestmates Affect the Cohesion of Swarming Groups in Social Spiders
Insect. Soc. 55 (2008) 355 – 359 0020-1812/08/040355-5 Insectes Sociaux DOI 10.1007/s00040-008-1011-8 Birkhäuser Verlag, Basel, 2008 Research article How non-nestmates affect the cohesion of swarming groups in social spiders A.-C. Mailleux1, R. Furey2, F. Saffre1, B. Krafft4 and J.-L. Deneubourg1 1 Service dÉcologie Sociale, Campus de la Plaine, CP 231, UniversitØ Libre de Bruxelles, 1050 Brussels, Belgium, e-mail: [email protected], [email protected], [email protected] 2 Harrisburg University of Science and Technology 866, HBG.UNIV 215, Market Street, Harrisburg, Pennsylvania 17101 USA, e-mail: [email protected] 3 UniversitØ Nancy 2, Rue Baron Louis, BP 454 Code postal 54001 Ville Nancy Cedex, France, e-mail: [email protected] Received 30 October 2007; revised 3 April and 19 May 2008; accepted 22 May 2008. Published Online First 17 June 2008 Abstract. In social biology, it is often considered that an Fletcher and Michener, 1987). Unlike most vertebrate organized society cannot exist without exclusion behav- and invertebrate societies (Hepper, 1986; Fletcher and iour towards newcomers from another nest. Unlike most Michener, 1987), social spiders accept artificially intro- vertebrate and invertebrate social species, social spiders duced immigrants without apparent discrimination or such as Anelosimus eximius accept unrelated migrants agonistic behaviour (Evans, 1999). This absence of group without agonistic behaviour. Does it imply that spiders closure prompts some authors to suggest that spiders cannot recognize non-nestmates from nestmates or is cannot identify newcomers (Buskirk, 1981; Howard, there any evidence of recognition without aggression ? In 1982; Darchen and Delage-Darchen, 1986; Pasquet et order to answer this question, we studied behavioural al., 1997). -
Sexual Selection Research on Spiders: Progress and Biases
Biol. Rev. (2005), 80, pp. 363–385. f Cambridge Philosophical Society 363 doi:10.1017/S1464793104006700 Printed in the United Kingdom Sexual selection research on spiders: progress and biases Bernhard A. Huber* Zoological Research Institute and Museum Alexander Koenig, Adenauerallee 160, 53113 Bonn, Germany (Received 7 June 2004; revised 25 November 2004; accepted 29 November 2004) ABSTRACT The renaissance of interest in sexual selection during the last decades has fuelled an extraordinary increase of scientific papers on the subject in spiders. Research has focused both on the process of sexual selection itself, for example on the signals and various modalities involved, and on the patterns, that is the outcome of mate choice and competition depending on certain parameters. Sexual selection has most clearly been demonstrated in cases involving visual and acoustical signals but most spiders are myopic and mute, relying rather on vibrations, chemical and tactile stimuli. This review argues that research has been biased towards modalities that are relatively easily accessible to the human observer. Circumstantial and comparative evidence indicates that sexual selection working via substrate-borne vibrations and tactile as well as chemical stimuli may be common and widespread in spiders. Pattern-oriented research has focused on several phenomena for which spiders offer excellent model objects, like sexual size dimorphism, nuptial feeding, sexual cannibalism, and sperm competition. The accumulating evidence argues for a highly complex set of explanations for seemingly uniform patterns like size dimorphism and sexual cannibalism. Sexual selection appears involved as well as natural selection and mechanisms that are adaptive in other contexts only. Sperm competition has resulted in a plethora of morpho- logical and behavioural adaptations, and simplistic models like those linking reproductive morphology with behaviour and sperm priority patterns in a straightforward way are being replaced by complex models involving an array of parameters. -
The Short-Range Endemic Invertebrate Fauna of the Ravensthorpe Range
THE SHORT-RANGE ENDEMIC INVERTEBRATE FAUNA OF THE RAVENSTHORPE RANGE MARK S. HARVEY MEI CHEN LENG Department of Terrestrial Zoology Western Australian Museum June 2008 2 Executive Summary An intensive survey of short-range endemic invertebrates in the Ravensthorpe Range at 79 sites revealed a small but significant fauna of myriapods and arachnids. Four species of short-range endemic invertebrates were found: • The millipede Antichiropus sp. R • The millipede Atelomastix sp. C • The millipede Atelomastix sp. P • The pseudoscorpion Amblyolpium sp. “WA1” Atelomastix sp. C is the only species found to be endemic to the Ravensthorpe Range and was found at 14 sites. Antichiropus sp. R, Atelomastix sp. P and Amblyolpium sp. “WA1” are also found at nearby locations. Sites of high importance include: site 40 with 7 species; sites 7 and 48 each with 5 species; and sites 18 and 44 each with 4 species. WA Museum - Ravensthorpe Range Survey 3 Introduction Australia contains a multitude of terrestrial invertebrate fauna species, with many yet to be discovered and described. Arthropods alone were recently estimated to consist of approximately more than 250,000 species (Yeates et al. 2004). The majority of these belong to the arthropod classes Insecta and Arachnida, and although many have relatively wide distributions across the landscape, some are highly restricted in range with special ecological requirements. These taxa, termed short-range endemics (Harvey 2002b), are taxa categorised as having poor dispersal abilities and/or requiring very specific habitats, usually with naturally small distributional ranges of less than 10,000 km2 and the following ecological and life-history traits: • poor powers of dispersal; • confinement to discontinuous habitats; • usually highly seasonal, only active during cooler, wetter periods; and • low levels of fecundity. -
The Life Cycle of Heteropoda Venatoria (Linnaeus) (Araneae: Heteropodidae)I, by John Ross 3, David B
THE LIFE CYCLE OF HETEROPODA VENATORIA (LINNAEUS) (ARANEAE: HETEROPODIDAE)I, BY JOHN ROSS 3, DAVID B. RICHMAN 3, FADEL MANSOUR4, ANNE TRAMBARULO3, AND W. H. WHITCOMB The giant crab spider, Heteropoda venatoria (L.), is known to occur throughout much of the tropics and subtropics of the world where it is valued as a predator of cockroaches (Guthrie and Tindall 1968, Hughes 1977, Edwards 1979). Its feeding habits, like those of most spiders, vary somewhat and it has also been known to eat scorpions and bats (Bhattacharya 1941), although it is questionable as to whether it normally attacks such prey. This spider is often found associated with human habitation, possibly due to the abun- dance of prey (Subrahamanyam 1944, Edwards 1979). Although biological notes on H. venatoria have been published by several workers (Lucas 1871, Minchin 1904, Bristowe 1924, Bonnet 1930, Ori 1974, 1977), the only life history work to date was published by Bonnet (1932) and Sekiguchi (1943, 1944a,b, 1945). Bonnet (1932) based his study on only 12 spiders (of which seven matured) and lacked data on the postembryonic stages. Sekiguchi (1943, 1944a,b, 1945) presented a more nearly complete study, but the papers are difficult to translate and they still lack some data, especially in regard to variation in the number of instars and carapace width. We have raised H. venatoria in the laboratory and present here our data on life cycle of this important beneficial arthropod. MATERIALS AND METHODS Spiders were obtained from avocado groves in south Florida, near Homestead, Dade County. Egg sacs taken from our laboratory This study was partially supported by the United States-lsrael BARD Fund as Research Project No. -
SHORT COMMUNICATION a Vertebrate-Eating Jumping Spider
2017. Journal of Arachnology 45:238–241 SHORT COMMUNICATION A vertebrate-eating jumping spider (Araneae: Salticidae) from Florida, USA Martin Nyffeler1, G. B. Edwards2 and Kenneth L. Krysko3: 1Section of Conservation Biology, Department of Environmental Sciences, University of Basel, CH-4056, Basel, Switzerland; E-mail: [email protected]; 2Curator Emeritus: Arachnida & Myriapoda, Florida State Collection of Arthropods, Gainesville, FL 32608, USA; 3Division of Herpetology, Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA Abstract. The salticid spider Phidippus regius C.L. Koch, 1846 is documented preying on small frogs (Hyla spp., Osteopilus septentrionalis) and lizards (Anolis carolinensis and Anolis sagrei) in Florida, USA. Female as well as male P. regius were engaged in feeding on this type of vertebrate prey. A total of eight incidents of P. regius devouring vertebrates have been witnessed in seven Florida counties. Furthermore, we report an incident of a large unidentified Phidippus sp. (possibly P. bidentatus F. O. Pickard-Cambridge, 1901) preying on an immature anole lizard in Costa Rica. P. regius, otherwise known to feed almost exclusively on insects and spiders, is one of the world’s largest salticid spiders reaching a maximum recorded body length of 2.2 cm. Most other salticid spiders appear to be too small in body size to overcome vertebrate prey. Vertebrate predation by salticid spiders has not been previously documented in the scientific literature. Together with Salticidae, spiders from 27 of 114 families (24%) are currently known to occasionally consume vertebrate prey. Keywords: Generalist predators, predation, prey, Dactyloidae, Hylidae, Southeastern USA With .5,900 described species, the jumping spider family (Salt- observations. -
Level 1 Fauna Survey of the Gruyere Gold Project Borefields (Harewood 2016)
GOLD ROAD RESOURCES LIMITED GRUYERE PROJECT EPA REFERRAL SUPPORTING DOCUMENT APPENDIX 5: LEVEL 1 FAUNA SURVEY OF THE GRUYERE GOLD PROJECT BOREFIELDS (HAREWOOD 2016) Gruyere EPA Ref Support Doc Final Rev 1.docx Fauna Assessment (Level 1) Gruyere Borefield Project Gold Road Resources Limited January 2016 Version 3 On behalf of: Gold Road Resources Limited C/- Botanica Consulting PO Box 2027 BOULDER WA 6432 T: 08 9093 0024 F: 08 9093 1381 Prepared by: Greg Harewood Zoologist PO Box 755 BUNBURY WA 6231 M: 0402 141 197 T/F: (08) 9725 0982 E: [email protected] GRUYERE BOREFIELD PROJECT –– GOLD ROAD RESOURCES LTD – FAUNA ASSESSMENT (L1) – JAN 2016 – V3 TABLE OF CONTENTS SUMMARY 1. INTRODUCTION .....................................................................................................1 2. SCOPE OF WORKS ...............................................................................................1 3. RELEVANT LEGISTALATION ................................................................................2 4. METHODS...............................................................................................................3 4.1 POTENTIAL VETEBRATE FAUNA INVENTORY - DESKTOP SURVEY ............. 3 4.1.1 Database Searches.......................................................................................3 4.1.2 Previous Fauna Surveys in the Area ............................................................3 4.1.3 Existing Publications .....................................................................................5 4.1.4 Fauna -
Banded Huntsman, Holconia Immanis
Care guide Giant Banded Huntsman, Holconia immanis Giant Banded Huntsmen are one of Australia’s largest spiders, growing up to body length of 45 mm and a leg span of 160 mm. They are found in the warmer parts of eastern Australia, and range from NSW to Queensland. They feed on a wide range of other invertebrates including moths, crickets, cockroaches and other spiders. They have also been known to feed on small vertebrates such as frogs and geckos in the wild. These spiders are extremely fast, and have the ability to run sideways and squeeze into very narrow crevices. They are covered in fine sensory hairs which are extremely sensitive to air movement. This assists them in detecting the movement of prey and the approach of predators. Like other huntsmen, this species lays its eggs encased within a flattened white silk egg sac. They usually secure this in a dark place such as under loose tree bark and stay with their eggs until after they hatch. The young emerge 30 - 60 days after being laid (they will develop faster in warmer conditions) and several hundred spiderlings may emerge from a single egg sac. The spiderlings will cluster around their mother for several weeks after they emerge and will tolerate each other during this stage. Once they disperse any chance meetings of the siblings will often result in one eating the other. These spiders grow by shedding their outer skeleton (exoskeleton). This process is called ecdysis or moulting. To moult successfully they need to hang uninterrupted beneath a leaf or branch. -
Mai Po Nature Reserve Management Plan: 2019-2024
Mai Po Nature Reserve Management Plan: 2019-2024 ©Anthony Sun June 2021 (Mid-term version) Prepared by WWF-Hong Kong Mai Po Nature Reserve Management Plan: 2019-2024 Page | 1 Table of Contents EXECUTIVE SUMMARY ................................................................................................................................................... 2 1. INTRODUCTION ..................................................................................................................................................... 7 1.1 Regional and Global Context ........................................................................................................................ 8 1.2 Local Biodiversity and Wise Use ................................................................................................................... 9 1.3 Geology and Geological History ................................................................................................................. 10 1.4 Hydrology ................................................................................................................................................... 10 1.5 Climate ....................................................................................................................................................... 10 1.6 Climate Change Impacts ............................................................................................................................. 11 1.7 Biodiversity ................................................................................................................................................ -
Phylogeny of Entelegyne Spiders: Affinities of the Family Penestomidae
Molecular Phylogenetics and Evolution 55 (2010) 786–804 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Phylogeny of entelegyne spiders: Affinities of the family Penestomidae (NEW RANK), generic phylogeny of Eresidae, and asymmetric rates of change in spinning organ evolution (Araneae, Araneoidea, Entelegynae) Jeremy A. Miller a,b,*, Anthea Carmichael a, Martín J. Ramírez c, Joseph C. Spagna d, Charles R. Haddad e, Milan Rˇezácˇ f, Jes Johannesen g, Jirˇí Král h, Xin-Ping Wang i, Charles E. Griswold a a Department of Entomology, California Academy of Sciences, 55 Music Concourse Drive, Golden Gate Park, San Francisco, CA 94118, USA b Department of Terrestrial Zoology, Nationaal Natuurhistorisch Museum Naturalis, Postbus 9517 2300 RA Leiden, The Netherlands c Museo Argentino de Ciencias Naturales – CONICET, Av. Angel Gallardo 470, C1405DJR Buenos Aires, Argentina d William Paterson University of New Jersey, 300 Pompton Rd., Wayne, NJ 07470, USA e Department of Zoology & Entomology, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa f Crop Research Institute, Drnovská 507, CZ-161 06, Prague 6-Ruzyneˇ, Czech Republic g Institut für Zoologie, Abt V Ökologie, Universität Mainz, Saarstraße 21, D-55099, Mainz, Germany h Laboratory of Arachnid Cytogenetics, Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Prague, Czech Republic i College of Life Sciences, Hebei University, Baoding 071002, China article info abstract Article history: Penestomine spiders were first described from females only and placed in the family Eresidae. Discovery Received 20 April 2009 of the male decades later brought surprises, especially in the morphology of the male pedipalp, which Revised 17 February 2010 features (among other things) a retrolateral tibial apophysis (RTA). -
Chapter 13 Arachnids As
CHAPTER THIRTEEN ARACHNIDS 13.1 The arachnid fauna of south central Seram As with insects, only a very few specimens compared with the total number of known species were collected in the field. Nevertheless, they do cover most species commonly encountered and named by the Nuaulu. A checklist of arachnid specimens recorded in the Nuaulu area during field- work is presented in table 22. 13.2 Nuaulu categories applied to arachnids excepting Acarida 13.2.1 kanopone Scorpions (SCORPIONIDA) and possibly also whip-scorpions ( URO- PYGI ). 13.2.2 riko-riko, nau asue The first term is consistently applied to harvestmen ( PHALANGIDA ). In the second, nau is a general term for augury and divination; asu = 'dog', asu- = 'cheek' + non-human possessive pronominal suffix. Nau asue is applied to the harvestman Altobunus formosus. It is probably a synonym for riko-riko, being used as a nick-name in circumstances in which it seems auspicious. 13.2.3 kahuneke hatu nohu inae Hatu nohu(e), meaning 'cavernous rock outcrop, cave', indicates the habitat of this spider; inae = 'mother'. As kahunekete is the generic term for spider we thus have 'mother cave spider'. Applied quite specifically to tailess whip scorpions, and generally encountered in rock fissures when hunting bats. 13.2.4 kahuneke ai ukune Ai ukune = 'treetop', far forest. Applied to various kinds of long- bodied spider, including Theridion and possibly Nephilia. It therefore seems to be applied to both hunters and spinners of irregular webs in forest habi- tats. - 201 - 13.2.5 kahuneke titie Titie = 'hot', so-called on account of the ability of this round-bodied spider to bite humans and cause a painful swelling. -
Spiders 27 November-5 December 2018 Submitted: August 2019 Robert Raven
Bush Blitz – Namadgi, ACT 27 Nov-5 Dec 2018 Namadgi, ACT Bush Blitz Spiders 27 November-5 December 2018 Submitted: August 2019 Robert Raven Nomenclature and taxonomy used in this report is consistent with: The Australian Faunal Directory (AFD) http://www.environment.gov.au/biodiversity/abrs/online-resources/fauna/afd/home Page 1 of 12 Bush Blitz – Namadgi, ACT 27 Nov-5 Dec 2018 Contents Contents .................................................................................................................................. 2 List of contributors ................................................................................................................... 2 Abstract ................................................................................................................................... 4 1. Introduction ...................................................................................................................... 4 2. Methods .......................................................................................................................... 4 2.1 Site selection ............................................................................................................. 4 2.2 Survey techniques ..................................................................................................... 4 2.2.1 Methods used at standard survey sites ................................................................... 5 2.3 Identifying the collections ......................................................................................... -
Eusparassus Dufouri En Andere Jachtkrabspinnen (Araneae: Sparassidae) Getransporteerd Naar Nederland
58 entomologische berichten 77 (2) 2017 Eusparassus dufouri en andere jachtkrabspinnen (Araneae: Sparassidae) getransporteerd naar Nederland Jinze Noordijk Marc de Winkel TREFWOORDEN Adventieven, exoten, Micrommata ligurina, Middellandse Zeegebied, Olios argelasius Entomologische Berichten 77 (2): 58-61 De spinnenfamilie Sparassidae heeft in Nederland slechts één inheemse vertegenwoordiger. Daarnaast zijn er enkele adventieve soorten gemeld. In deze bijdrage voeren wij nieuwe geïmporteerde soorten op. Eusparassus dufouri is een grote, fraaie spin, afkomstig uit het mediterrane gebied. Het is een nachtactieve soort die door snel te rennen prooien overrompelt. In zowel 2014 als 2016 is een individu in Nederland gevonden en bij de auteurs van dit artikel terecht gekomen. Importen van Micrommata ligurina en Olios argelasius, die beide ook van oorsprong uit het Middellandse Zeegebied komen en eerder al op internet gemeld waren, worden hier ook kort behandeld. Jachtkrabspinnen Vondsten van Eusparassus dufouri Jachtkrabspinnen, Sparassidae, vormen een familie met bijna In zowel 2014 als 2016 zijn exemplaren van Eusparassus dufouri duizend soorten die met name in de tropen en subtropen voor- in ons land gevonden. Het eerste dier liep rond in een huis; hoe komen, onder andere veel in woestijn- en rotsachtige biotopen hij daar is gekomen kon niet achterhaald worden. Het tweede (Jocqué & Dippenaar-Schoeman 2006, Murphy & Roberts 2015). exemplaar werd levend gevonden in een camper; de eigena- Alleen het genus Micrommata komt ook in gematigde streken ren ervan waren er vier maanden ervoor mee in Zuid-Spanje voor: het Palearctische gebied. geweest. In Nederland kennen we één inheemse jachtkrabspin: Materiaal 1 volwassen / (figuur 1), 12.xii.2014, Arnhem-Zuid Micrommata virescens (Clerck), een soort die op lage planten in (Gelderland, AC 186-441), levend in huis, leg.