Scottish Spiders - Oonopspulcher 15Mm
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Oak Woodland Litter Spiders James Steffen Chicago Botanic Garden
Oak Woodland Litter Spiders James Steffen Chicago Botanic Garden George Retseck Objectives • Learn about Spiders as Animals • Learn to recognize common spiders to family • Learn about spider ecology • Learn to Collect and Preserve Spiders Kingdom - Animalia Phylum - Arthropoda Subphyla - Mandibulata Chelicerata Class - Arachnida Orders - Acari Opiliones Pseudoscorpiones Araneae Spiders Arachnids of Illinois • Order Acari: Mites and Ticks • Order Opiliones: Harvestmen • Order Pseudoscorpiones: Pseudoscorpions • Order Araneae: Spiders! Acari - Soil Mites Characteriscs of Spiders • Usually four pairs of simple eyes although some species may have less • Six pair of appendages: one pair of fangs (instead of mandibles), one pair of pedipalps, and four pair of walking legs • Spinnerets at the end of the abdomen, which are used for spinning silk threads for a variety of purposes, such as the construction of webs, snares, and retreats in which to live or to wrap prey • 1 pair of sensory palps (often much larger in males) between the first pair of legs and the chelicerae used for sperm transfer, prey manipulation, and detection of smells and vibrations • 1 to 2 pairs of book-lungs on the underside of abdomen • Primitively, 2 body regions: Cephalothorax, Abdomen Spider Life Cycle • Eggs in batches (egg sacs) • Hatch inside the egg sac • molt to spiderlings which leave from the egg sac • grows during several more molts (instars) • at final molt, becomes adult – Some long-lived mygalomorphs (tarantulas) molt after adulthood Phenology • Most temperate -
Dna Sequence Data Indicates the Polyphyl Y of the Family Ctenidae (Araneae )
1993. The Journal of Arachnology 21 :194–201 DNA SEQUENCE DATA INDICATES THE POLYPHYL Y OF THE FAMILY CTENIDAE (ARANEAE ) Kathrin C . Huber', Thomas S . Haider2, Manfred W . Miiller2, Bernhard A . Huber' , Rudolf J. Schweyen2, and Friedrich G . Barth' : 'Institut fair Zoologie, Althanstr . 14; 1090 Wien; and 2lnstitut fur Mikrobiologie and Genetik; Dr. Bohrgasse 9 ; 1030 Wien (Vienna), Austria . ABSTRACT. Mitochondrial DNA fragments comprising more than 400 bases of the 16S rDNA from nine spider species have been sequenced: Cupiennius salei, C. getazi, C. coccineus and Phoneutria boliviensis (Ctenidae), Pisaura mirabilis, Dolomedes fimbriatus (Pisauridae), Pardosa agrestis (Lycosidae), Clubiona pallidula (Clubi- onidae) and Ryuthela nishihirai (syn. Heptathela nishihirai; Heptathelidae: Mesothelae). Sequence divergence ranges from 3–4% among Cupiennius species and up to 36% in pairwise comparisons of the more distantly related spider DNAs. Maximally parsimonious gene trees based on these sequences indicate that Phoneutri a and Cupiennius are the most distantly related species of the examined Lycosoidea . The monophyly of the family Ctenidae is therefore doubted ; and a revision of the family, which should include DNA-data, is needed . Cupiennius salei (Ctenidae) is one of the most get a high copy number of the DNA segment of extensively studied species of spiders (see Lach - interest. The PCR depends on the availability of muth et al. 1985). The phylogeny of the Ctenidae , oligonucleotides that specifically bind to the a mainly South and Central American family, i s flanking sequences of this DNA segment. These poorly understood ; and systematists propose oligonucleotides serve as primers for a polymer- highly contradicting views on its classification ization reaction that copies the segment in vitro. -
The Common Spiders of Antelope Island State Park
THE COMMON SPIDERS OF ANTELOPE ISLAND STATE PARK by Stephanie M Cobbold Web-building Spiders ______________________________________________________________________________ Family Araneidae (orb web spiders) Build a circular spiral web on support lines that radiate out from the center The spider is often found waiting for prey in the center of its web Typical eye pattern: 4 median eyes clustered in a square shape Eye pattern Orb web SMC SMC Neoscona (back and front views) Banded Garden Spider (Argiope) 1 ______________________________________________________________________________ Family Theridiidae (cob web spiders) Abdomen usually ball or globe-shaped Have bristles on legs called combs. These combs are used to fling silk strands over captive prey. Web is loose, irregular and 3-dimensional commons.wikimedia.org Black Widow (Latrodectus hesperus) Theridion ________________________________________________________________________ Family Linyphiidae (sheet web spiders) Build flat, sheet-like or dome-shaped webs under which the spider hangs upside- down. Abdomen is usually longer than wide SMC Sheet web spider hanging under its web 2 ________________________________________________________________________ Family Dictynidae (mesh web spiders) Make small, irregular webs of hackled threads Often found near the tips of plants SMC ________________________________________________________________________ Family Agelenidae (funnel web spiders) Web is a silk mat with a funnel-shaped retreat at one end in which the spider waits in ambush -
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. -
Untangling the Web… Spiders in Arizona Fields! Ayman Mostafa, Lydia M
Untangling the Web… Spiders in Arizona Fields! Ayman Mostafa, Lydia M. Brown, Tim Vandervoet, Peter C. Ellsworth (University of Arizona), Vonny Barlow (University of California) & Steven E. Naranjo (USDA-ARS, ALARC) Spiders are beneficial inhabitants of agricultural fields because of Lygus nymph prey their important contributions to biological control of pest insects, consuming tons of small arthropods every year. Spiders eat anything they can catch, even prey larger than themselves. When they are abundant, they contribute to the control of many insect pests in A Arizona crop fields including whiteflies, Lygus bugs, fleahoppers, Leafhopper and lepidopteran larvae. Field studies in Arizona demonstrate that the prey B crab spider, Misumenops celer (Family Thomisidae, Fig. 1A, B) and Dictyna spider, Dictyna reticulata (Family Dictynidae, Fig. 1C, D) are common in Arizona cotton fields and can be influential predators. Unlike other spiders that spin webs to capture their food, crab spiders rely on stealth and surprise. They actively search plant surfaces, litter, and debris for prey. They hide in flowers or foliage and ambush their prey. Their common name derives from the fact that they look like and walk like crabs. Dictyna are small, brownish, web-making E spiders that trap whitefly adults and other insects in their webs (Fig. 1C). Examining their webs enables easy identification of what D species of whitefly are in the field (sweetpotato or banded-winged). C Jumping spiders (Family Salticidae, Fig. 1E) are generally less abundant in cotton fields but, like crab spiders, ambush their prey. They have stout bodies and long front legs adapted for jumping, as well as four pairs of eyes with one very large set in the middle of their face. -
Prey of the Jumping Spider Phidippus Johnsoni (Araneae : Salticidae)
Jackson, R. R . 1977 . Prey of the jumping spider Phidippus johnsoni (Araneae : Salticidae) . J. Arachnol. 5 :145-149 . PREY OF THE JUMPING SPIDER PHIDIPPUS JOHNSONI (ARANEAE : SALTICIDAE) Robert R. Jackson I Zoology Departmen t University of Californi a Berkeley, California 9472 0 ABSTRACT Field data indicate that P. johnsoni is an euryphagous predator, whose diet includes organisms (aphids, ants, opilionids) sometimes considered distasteful to spiders . Other spiders are preyed upon , including conspecifics. Prey size tends to be one quarter to three quarters the size of the predator . INTRODUCTION Since spiders are probably a dominant group of predators of insects (Bristowe, 1941 ; Riechert, 1974; Turnbull, 1973), there is considerable interest in their feeding ecology . Spiders have usually been considered to be euryphagous predators with a stabilizing , rather than regulative, effect on insect populations (Riechert, 1974) . However, informa- tion concerning the prey taken by particular spider species, in the field, is limited . Field studies by Edgar (1969, 1970), Robinson and Robinson (1970) and Turnbull (1960) are especially noteworthy . During the course of a study of the reproductive biology of Phidippus johnsoni (Peckham and Peckham) (Jackson, 1976), occasionally individuals of this species were found in the field holding prey in their chelicerae . Each prey discovered in this way i s listed in Table 1 . In addition, Ken Evans and Charles Griswold, who were familiar wit h this species, recorded observations of P. johnsoni with prey. (Their data are included in Table 1 .) These data came from a variety of habitats in western North America, most o f which have been described elsewhere (Jackson, 1976) . -
Abundance and Community Composition of Arboreal Spiders: the Relative Importance of Habitat Structure
AN ABSTRACT OF THE THESIS OF Juraj Halaj for the degree of Doctor of Philosophy in Entomology presented on May 6, 1996. Title: Abundance and Community Composition of Arboreal Spiders: The Relative Importance of Habitat Structure. Prey Availability and Competition. Abstract approved: Redacted for Privacy _ John D. Lattin, Darrell W. Ross This work examined the importance of structural complexity of habitat, availability of prey, and competition with ants as factors influencing the abundance and community composition of arboreal spiders in western Oregon. In 1993, I compared the spider communities of several host-tree species which have different branch structure. I also assessed the importance of several habitat variables as predictors of spider abundance and diversity on and among individual tree species. The greatest abundance and species richness of spiders per 1-m-long branch tips were found on structurally more complex tree species, including Douglas-fir, Pseudotsuga menziesii (Mirbel) Franco and noble fir, Abies procera Rehder. Spider densities, species richness and diversity positively correlated with the amount of foliage, branch twigs and prey densities on individual tree species. The amount of branch twigs alone explained almost 70% of the variation in the total spider abundance across five tree species. In 1994, I experimentally tested the importance of needle density and branching complexity of Douglas-fir branches on the abundance and community structure of spiders and their potential prey organisms. This was accomplished by either removing needles, by thinning branches or by tying branches. Tying branches resulted in a significant increase in the abundance of spiders and their prey. Densities of spiders and their prey were reduced by removal of needles and thinning. -
Status and Protection of Globally Threatened Species in the Caucasus
STATUS AND PROTECTION OF GLOBALLY THREATENED SPECIES IN THE CAUCASUS CEPF Biodiversity Investments in the Caucasus Hotspot 2004-2009 Edited by Nugzar Zazanashvili and David Mallon Tbilisi 2009 The contents of this book do not necessarily reflect the views or policies of CEPF, WWF, or their sponsoring organizations. Neither the CEPF, WWF nor any other entities thereof, assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, product or process disclosed in this book. Citation: Zazanashvili, N. and Mallon, D. (Editors) 2009. Status and Protection of Globally Threatened Species in the Caucasus. Tbilisi: CEPF, WWF. Contour Ltd., 232 pp. ISBN 978-9941-0-2203-6 Design and printing Contour Ltd. 8, Kargareteli st., 0164 Tbilisi, Georgia December 2009 The Critical Ecosystem Partnership Fund (CEPF) is a joint initiative of l’Agence Française de Développement, Conservation International, the Global Environment Facility, the Government of Japan, the MacArthur Foundation and the World Bank. This book shows the effort of the Caucasus NGOs, experts, scientific institutions and governmental agencies for conserving globally threatened species in the Caucasus: CEPF investments in the region made it possible for the first time to carry out simultaneous assessments of species’ populations at national and regional scales, setting up strategies and developing action plans for their survival, as well as implementation of some urgent conservation measures. Contents Foreword 7 Acknowledgments 8 Introduction CEPF Investment in the Caucasus Hotspot A. W. Tordoff, N. Zazanashvili, M. Bitsadze, K. Manvelyan, E. Askerov, V. Krever, S. Kalem, B. Avcioglu, S. Galstyan and R. Mnatsekanov 9 The Caucasus Hotspot N. -
Evolution of Deceit by Worthless Donations in a Nuptial Gift-Giving Spider
Current Zoology 60 (1): 43–51, 2014 Evolution of deceit by worthless donations in a nuptial gift-giving spider Paolo Giovanni GHISLANDI1, Maria J. ALBO1, 2, Cristina TUNI1, Trine BILDE1* 1 Department of Bioscience, Aarhus University, 8000, Aarhus C, Denmark 2 Laboratorio de Etología, Ecología y Evolución, IIBCE, Uruguay Abstract Males of the nursery web spider Pisaura mirabilis usually offer an insect prey wrapped in white silk as a nuptial gift to facilitate copulation. Males exploit female foraging preferences in a sexual context as females feed on the gift during copula- tion. It is possible for males to copulate without a gift, however strong female preference for the gift leads to dramatically higher mating success for gift-giving males. Females are polyandrous, and gift-giving males achieve higher mating success, longer copulations, and increased sperm transfer that confer advantages in sperm competition. Intriguingly, field studies show that ap- proximately one third of males carry a worthless gift consisting of dry and empty insect exoskeletons or plant fragments wrapped in white silk. Silk wrapping disguises gift content and females are able to disclose gift content only after accepting and feeding on the gift, meanwhile males succeed in transferring sperm. The evolution of deceit by worthless gift donation may be favoured by strong intra-sexual competition and costs of gift-construction including prey capture, lost foraging opportunities and investment in silk wrapping. Females that receive empty worthless gifts terminate copulation sooner, which reduces sperm transfer and likely disadvantages males in sperm competition. The gift-giving trait may thus become a target of sexually antagonistic co-evolution, where deceit by worthless gifts leads to female resistance to the trait. -
Araneae: Dysderidae)
Biodiversity Data Journal 3: e4419 doi: 10.3897/BDJ.3.e4419 Taxonomic Paper A new species of Harpactea Bristowe, 1939 from Turkey (Araneae: Dysderidae) Recep Sulhi Özkütük‡, Mert Elverici §,|, Yuri M. Marusik¶, Kadir Boğaç Kunt‡ ‡ Anadolu University, Science Faculty, Biology Department, Eskişehir, Turkey § Middle East Technical University, Biology Department, Ankara, Turkey | Erzincan University, Science and Arts Faculty, Biology Department, Erzincan, Turkey ¶ IBPN RAS, Magadan, Russia Corresponding author: Recep Sulhi Özkütük ([email protected]), Kadir Boğaç Kunt ([email protected]) Academic editor: Jason Bond Received: 27 Dec 2014 | Accepted: 06 Sep 2015 | Published: 07 Sep 2015 Citation: Özkütük R, Elverici M, Marusik Y, Kunt K (2015) A new species of Harpactea Bristowe, 1939 from Turkey (Araneae: Dysderidae). Biodiversity Data Journal 3: e4419. doi: 10.3897/BDJ.3.e4419 ZooBank: urn:lsid:zoobank.org:pub:DE2CC6E0-FA8F-4C26-8D03-55ED686D5E96 Abstract A new species of Harpactea Bristowe, 1939, H. alanyana sp. n. is described from southern Turkey. The new species appears closely related to H. osellai Brignoli, 1978. Detailed description and illustrations of the new and related species are provided. The relationships of the two species are discussed. Keywords Alanya, Antalya, Mediterranean, spider, woodlouse hunters Introduction Harpactea Bristowe, 1939 is large genus of dysderid spiders that includes 172 species distributed in the Mediterranean region from the Iberian Peninsula to Turkmenistan (World Spider Catalog 2014). In spite of this wide distribution range and high species richness, © Özkütük R et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. -
Check-List of Polish Spiders (Araneae, Except Salticidae) File:///D:/Internet/Polen/Polen Spinnenliste 2004.Htm
Check-list of Polish spiders (Araneae, except Salticidae) file:///D:/Internet/Polen/Polen Spinnenliste 2004.htm Check-list of Polish spiders (Araneae, except Salticidae) 1. November, 2004 by Wojciech STARĘGA Instytut Biologii, Katedra Zoologii, Akademia Podlaska, Siedlce [email protected] The present list is a compilation and continuation of the earlier check-lists of Polish spiders (PRÓSZYŃSKI & STARĘGA 1971, 1997, 2003, STARĘGA 1983, PROSZYNSKI & STAREGA 2002]. It will be currently updated, according to the progress of cognition of the country's spider fauna. I give also a list of the most important faunistic and other publications after 1971 which add any species new to the Polish fauna (or cross out some of them). The nomenclatural changes were regarded as far as possible to unify the names used in Polish arachnological literature with those in foreign check-lists and catalogues (e.g. PLATEN & al. 1995, commented by BLICK 1998), NENTWIG et. at. 2003, TANASEVITCH 2004, and first of all, with the latest version (5.0) of the "Spider Catalog" by PLATNICK (2004). The species, which occurrence in Poland is certain, have serial numbers, some exceptions which need confirmation or re-examination are marked with "X" sign instead of a number; doubtful species were not listed, though named in earlier papers (pre-1971). Species described from Poland (or with Polish localities mentioned in their original descriptions) are marked with „☼” sign. Species not "officially" known (i.e. published) from Poland but whose occurrence is already confirmed have remark „(fide ... [the name of its finder])". Some nomenclatorical remarks are given in square brackets. The species protected by law are marked with an asterisk (*), threatened ones - with symbols (in italics) used in the newest "Red list of threatened species in Poland" (STARĘGA & al. -
A Summary List of Fossil Spiders
A summary list of fossil spiders compiled by Jason A. Dunlop (Berlin), David Penney (Manchester) & Denise Jekel (Berlin) Suggested citation: Dunlop, J. A., Penney, D. & Jekel, D. 2010. A summary list of fossil spiders. In Platnick, N. I. (ed.) The world spider catalog, version 10.5. American Museum of Natural History, online at http://research.amnh.org/entomology/spiders/catalog/index.html Last udated: 10.12.2009 INTRODUCTION Fossil spiders have not been fully cataloged since Bonnet’s Bibliographia Araneorum and are not included in the current Catalog. Since Bonnet’s time there has been considerable progress in our understanding of the spider fossil record and numerous new taxa have been described. As part of a larger project to catalog the diversity of fossil arachnids and their relatives, our aim here is to offer a summary list of the known fossil spiders in their current systematic position; as a first step towards the eventual goal of combining fossil and Recent data within a single arachnological resource. To integrate our data as smoothly as possible with standards used for living spiders, our list follows the names and sequence of families adopted in the Catalog. For this reason some of the family groupings proposed in Wunderlich’s (2004, 2008) monographs of amber and copal spiders are not reflected here, and we encourage the reader to consult these studies for details and alternative opinions. Extinct families have been inserted in the position which we hope best reflects their probable affinities. Genus and species names were compiled from established lists and cross-referenced against the primary literature.