The Spider Collection (Arachnida: Araneae) of the Zoological Museum of the Iranian Research Institute of Plant Protection, with New Species Records for Iran

Total Page:16

File Type:pdf, Size:1020Kb

The Spider Collection (Arachnida: Araneae) of the Zoological Museum of the Iranian Research Institute of Plant Protection, with New Species Records for Iran Arachnologische Mitteilungen 50: 11-18 Karlsruhe, November 2015 The spider collection (Arachnida: Araneae) of the Zoological Museum of the Iranian Research Institute of Plant Protection, with new species records for Iran Alireza Zamani doi: 10.5431/aramit5002 Abstract. The spider collection of the Zoological Museum of the Iranian Research Institute of Plant Protection was studied during the summer of 2014. A total of 180 specimens, belonging to 25 families, 60 genera and 77 species were documented. Of these, the following nine species could be recorded from Iran for the first time: Alopecosa schmidti (Hahn, 1835), Anyphaena accentuata (Walckenaer, 1802), Crustulina sticta (O. P.-Cambridge, 1861), Enoplo- gnatha mordax (Thorell, 1875), Ero tuberculata (De Geer, 1778), Salticus zebraneus (C. L. Koch, 1837), Pardosa aenig- matica Tongiorgi, 1966, Pardosa nebulosa (Thorell, 1872) and Tmarus piochardi (Simon, 1866). Morphological and geographical data are provided for the newly recorded species. Two species (P. aenigmatica and T. piochardi) are illustrated and a map of localities is given. Keywords: fauna, Lycosidae, museum collection, Thomisidae Zusammenfassung. Die arachnologische Sammlung (Arachnida: Araneae) des Zoologischen Museums des iranischen Forschungsinstitutes für Pflanzenschutz, mit neuen Artnachweisen für den Iran. Im Sommer 2014 wurde die arachnologische Sammlung des Zoologischen Museums des iranischen Forschungsinstitutes für Pflan- zenschutz untersucht. Insgesamt 180 Individuen, die sich auf 25 Familien, 60 Gattungen und 77 Arten verteilen, konnten dabei vorgefunden werden. Darunter befanden sich insgesamt neun Neufunde für den Iran: Alopecosa schmidti (Hahn, 1835), Anyphaena accentuata (Walckenaer, 1802), Crustulina sticta (O. P.-Cambridge, 1861), Enoplog- natha mordax (Thorell, 1875), Ero tuberculata (De Geer, 1778), Salticus zebraneus (C. L. Koch, 1837), Pardosa aenigma- tica Tongiorgi, 1966, Pardosa nebulosa (Thorell, 1872) und Tmarus piochardi (Simon, 1866). Zur den Neufunden wer- den morphologische und geografische Angaben gemacht, für P. aenigmatica and T. piochardi werden Abbildungen präsentiert und eine Karte mit allen Fundorten der Museumssammlung wurde erstellt. The department of Agricultural Zoology at the Ira- the country were recovered and are reported and il- nian Research Institute of Plant Protection houses a lustrated here. museum with collections of different groups of ani- mals, mainly ticks, mites, birds and rodents, but also Methods a small collection of spiders. Specimens were mainly The collection was thoroughly revised between July collected by Dr. Fariba Mozaffarian – now curator of and September 2014. Examinations were carried out Auchenorrhyncha, Insect Taxonomy Research De- using a Nikon SMZ-645 stereomicroscope and di- partment – and Mrs. Sahra Ghavami. Some of the- gital images were captured with a Canon IXUS 300 se specimens were previously reported as definite or HS camera. The epigyne of some of the female spe- probable misidentifications, e.g. Dresserus, Eresidae, cimens were removed, cleared and cleaned with 10% known from Africa only, here identified as Stegody- KOH. Unlabelled and highly damaged specimens phus pacificus and Pardosa monticola, Lycosidae, here which were not suitable for scientific examination identified as P. buchari, as suggested by Marusik et were discarded, and the remaining specimens were al. (2012). Furthermore, a considerable portion of the numbered and relabelled. collection has never been cited before. Thus a com- List of abbreviations. ZMP-AR: Zoological prehensive study on the identification of these spe- Museum of the Iranian Research Institute of Plant ) cimens was carried out. As a result, new interesting Protection, Araneae section; leg.: legit (collected); : ( data on numerous taxa that are new to the fauna of male(s); : female(s). Nomenclature and global dis- tribution patterns follow the World Spider Catalog Alireza Zamani, Department of Animal Biology, School of (2014). Bio logy and Centre of Excellence in Phylogeny of Living Organisms, College of Sciences, University of Tehran, Tehran, Iran. Department of Agricultural Zoology Research, Iranian Research Institute of Plant Results Protection, Tehran, Iran; E-mail: [email protected] A total of 180 specimens, belonging to 25 fami- submitted 7.9.2014, accepted 12.4.2015, online 29.6.2015 lies, 60 genera and 77 species could be documented 12 A. Zamani Fig. 1: Map of Iran, show- ing the localities were the specimens were collected (see Tab. 1) (Tab. 1, Fig. 1). Data are given in as much detail as margin of the sclerotized anterior pockets (Růžička possible, for some records even the year is unknown, 2001). or only the province is known. Nine species are re- Distribution and remarks. This species is known corded from Iran for the first time (see below), and from Europe to Central Asia, and represents here a added to the checklist, which currently comprises of new species record for the spider fauna of Iran. Previ- 521 species in 229 genera and 45 families (Zamani ously, Marusik et al. (2014) predicted the presence of et al. 2015). this species in Iran based on nine juvenile specimens collected in Golestan Province. Species new to the fauna of Iran Anyphaenidae Bertkau, 1878 Lycosidae Sundevall, 1833 Anyphaena accentuata (Walckenaer, 1802) Alopecosa schmidti (Hahn, 1835) ( ) Material. 1 (ZMP-AR-0087), Iran: Mazandaran Material. 3 (ZMP-AR-0085), Iran: Tehran Pro- ( ) Province, Chamestan (20), 2004, Ghavami leg.; 1 1 vince, Sorkh-e-Hesar (23), 2007, Ghavami leg. (ZMP-AR-0096), Iran: Mazandaran Province, Diagnosis. Body length 10-11 mm in males, Chamestan (20), 2004, Ghavami leg. 14-18 mm in females. Males of this species are di- Diagnosis. Body length 4-9 mm. From the male agnosable by the large tegular apophysis which has pedipalps, this species can be distinguished by the a small hook at its tip and by the long embolus, presence of proximally long ventral spines on the fe- which has a thin apical part and makes a loop in mur, by two groups of short spines on the tibia and the middle section. Females can be distinguished by a group of strong bristles near the tibial apophysis. by the epigyneal plate being as-long-as-wide, la- Females of this species can be diagnosed by the ante- cking pockets, and by the presence of broad ducts riorly widened epigyneal fissure, by the pointed ante- between the two pairs of receptacles (Almquist rior border of the vulva and by the sharply concaved 2005). New species records for Iran 13 Distribution and remarks. Widely distributed different body pattern, the size of the epigynum, and in the Palaearctic, and representing here a new spe- different conformation of the male pedipalp (Tongi- cies record for the spider fauna of Iran. orgi 1966, 1968). Distribution and remarks. Previously known Pardosa aenigmatica Tongiorgi, 1966 (Fig. 2) from Italy, Turkey and Azerbaijan, it is a new species ( Material. 1 (ZMP-AR-0064), Iran: Ilam Pro- record for the spider fauna of Iran. This is the south- vince (10), 2001, Khoramly leg. eastern most record of the species across its whole Diagnosis. Body length 7 mm. This species is range. diagnosable from the closely related P. naevia by a Tab. 1: Spider specimens of the Zoological Museum of the Ira- nian Research Institute of Plant Protection. *New to the fauna of Taxa IN Available collection data ( Iran. Numbers of the collection sites refer to Fig. 1. Nuctenea umbratica 0092 1 subad. , Mazandaran, IN = Inventory Number (ZMP-AR) (Clerck, 1757) Amol (18), 2005, Ghava- Taxa IN Available collection data mi leg. ( Agelenidae Singa lucina 0071 1 , Mazandaran, Amol (Audouin, 1826) ( (18), 2005, Ghavami leg. Agelena labyrinthica 0066 1 , Golestan, Zanghian Corinnidae (Clerck, 1757) (6), 2001, Ghavami leg. ( ) Castianeira arnoldii 0025, 1 , Markazi, Saveh (17), Agelena orientalis 0067 1 , Mazandaran, Amol Charitonov, 1946 0052 19. Apr. 1998, Mozaffar- C. L. Koch, 1837 (18), 2007, Ghavami leg. ) ian leg.; 1 , Unknown. Anyphaenidae Dictynidae ( Anyphaena accentuata 0087, 1 , Mazandaran, Cha- ( Dictyna latens 0080 1 , Mazandaran, (Walckenaer, 1802)* 0096 mestan (20), 2004, Gha- ) ( (Fabricius, 1775) Ghaemshahr (20), 2004, vami leg.; 1 , 1 , ditto. Ghavami leg. Araneidae Eresidae ( Agalenatea redii 0094 1 , Golestan, Ramian (9), Stegodyphus pacificus 0037, ) (Scopoli, 1763) 1 , Qazvin, Tarom Sofla 23.Jun.2005, Ghavami leg. Pocock, 1900 0089 (21), 16. June 2006; ( ( Araneus angulatus 0079 1 , Mazandaran, Amol 1 , Gilan, Roodbar (5), Clerck, 1757 (18), 2007, Ghavami leg. 2002, Ghavami leg. ( Argiope bruennichi 0083 1 , Mazandaran (20), Eutichuridae ( (Scopoli, 1772) Jul. 2005, Ghavami leg. Cheiracanthium mildei 0029 1 , Tehran, Tehran (23), ( L. Koch, 1864 26. Apr. 1998, Farrokhi Argiope lobata 0076 1 , Ardebil, Moghan (2), leg. (Pallas, 1772) 2003, Ghavami leg. Filistatidae Cyclosa conica 0098 ( 1 , Golestan (6), 2002, ( (Pallas, 1772) Ghavami leg. Filistata insidiatrix 0086 1 , Fars, Darab (4), Sep. ( (Forsskål, 1775) 2004, Ghavami leg. Hypsosinga pygmaea 0003, 1 , Gilan, Rasht (5), 28. (Sundevall, 1831) 0013, June 1998, Mozaffarian Gnaphosidae 0027 leg.; Same, 18. Aug. 1996; ( ( Aphantaulax trifasciata 0051 1 , Fars, Nairiz (4), 4. Sep. 11 , Same, 24. June 1996, (O. P.-Cambridge, 2004, Ghavami leg. Karimian leg. 1872) ( ( Neoscona adianta 0001, 2 , Mazandaran, Tone- Drassodes cupreus 0046 1 , Semnan (22), 2006, (Walckenaer, 1802) 0028 kabon, Riceland (19), 6. (Blackwall, 1834) Ghavami leg. Aug. 1996, Mozaffarian ) ) Pterotricha loeffleri 0088
Recommended publications
  • The Effect of Native Forest Dynamics Upon the Arrangements of Species in Oak Forests-Analysis of Heterogeneity Effects at the Example of Epigeal Arthropods
    Master thesis Summer term 2011 The effect of native forest dynamics upon the arrangements of species in oak forests-analysis of heterogeneity effects at the example of epigeal arthropods Die Auswirkungen natürlicher Walddynamiken auf die Artengefüge in Eichenwäldern: Untersuchung von Heterogenitätseffekten am Beispiel epigäischer Raubarthropoden Study course: Ecology, Evolution and Nature conservation (M.Sc.) University of Potsdam presented by Marco Langer 757463 1. Evaluator: Prof. Dr. Monika Wulf, Institut für Landnutzungssysteme Leibniz-Zentrum für Agrarlandschaftsforschung e.V. 2. Evaluator: Tim Mark Ziesche, Landeskompetenzzentrum Eberswalde Published online at the Institutional Repository of the University of Potsdam: URL http://opus.kobv.de/ubp/volltexte/2011/5558/ URN urn:nbn:de:kobv:517-opus-55588 http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-55588 Abstract The heterogeneity in species assemblages of epigeal spiders was studied in a natural forest and in a managed forest. Additionally the effects of small-scale microhabitat heterogeneity of managed and unmanaged forests were determined by analysing the spider assemblages of three different microhabitat structures (i. vegetation, ii. dead wood. iii. litter cover). The spider were collected in a block design by pitfall traps (n=72) in a 4-week interval. To reveal key environmental factors affecting the spider distribution abiotic and biotic habitat parameters (e.g. vegetation parameters, climate parameters, soil moisture) were assessed around each pitfall trap. A TWINSPAN analyses separated pitfall traps from the natural forest from traps of the managed forest. A subsequent discriminant analyses revealed that the temperature, the visible sky, the plant diversity and the mean diameter at breast height as key discriminant factors between the microhabitat groupings designated by The TWINSPAN analyses.
    [Show full text]
  • Dynamics and Phenology of Ballooning Spiders in an Agricultural Landscape of Western Switzerland
    Departement of Biology University of Fribourg (Switzerland) Dynamics and phenology of ballooning spiders in an agricultural landscape of Western Switzerland THESIS Presented to the Faculty of Science of the University of Fribourg (Switzerland) in consideration for the award of the academic grade of Doctor rerum naturalium by Gilles Blandenier from Villiers (NE, Switzerland) Dissertation No 1840 UniPrint 2014 Accepted by the Faculty of Science of the Universtiy of Fribourg (Switzerland) upon the recommendation of Prof. Dr. Christian Lexer (University of Fribourg) and Prof. Dr. Søren Toft (University of Aarhus, Denmark), and the President of the Jury Prof. Simon Sprecher (University of Fribourg). Fribourg, 20.05.2014 Thesis supervisor The Dean Prof. Louis-Félix Bersier Prof. Fritz Müller Contents Summary / Résumé ........................................................................................................................................................................................................................ 1 Chapter 1 General Introduction ..................................................................................................................................................................................... 5 Chapter 2 Ballooning of spiders (Araneae) in Switzerland: general results from an eleven-years survey ............................................................................................................................................................................ 11 Chapter 3 Are phenological
    [Show full text]
  • SRS News No. 89
    www.britishspiders.org.uk S.R.S. News. No. 89. In Newsl. Br. arachnol. Soc. 140 Spider Recording Scheme News Autumn 2017, No. 89 Editor: Peter Harvey; [email protected] SRS website: http://srs.britishspiders.org.uk My thanks to those who have contributed to this issue. S.R.S. News No. 90 will be published in Spring 2018. Please send contributions by the end of February at the latest to Peter Harvey, 32 Lodge Lane, GRAYS, Essex, RM16 2YP; e-mail: [email protected] or [email protected]. The newsletter depends on your contributions! Editorial Jenifer Newton, a wonderful naturalist with an infectious enthusiasm. It was a great blow to spider recording in the As always, thank you to the contributors who have North West when she passed away. I have also been provided articles for this issue. Please help future issues encouraged and helped by Chris Felton at Liverpool by providing articles, short or longer, on interesting Museum. discoveries and observations. Between 2009 and 2013 I worked at the Local We now have 1,039,621 spider records in total in Environmental Record Centre for North Merseyside, Merseyside BioBank, managing it from 2010. For the last MapMate. About 424,400 have at least some site-based five years I have managed a project called "Tomorrow's phase 2 habitat information. A backlog of Excel data in Biodiversity" for the FSC in Shropshire. As part of that very user-unfriendly format remains to be dealt with. project I have worked with Nigel Cane-Honeysett (area As you will see from articles in this SRS News, we organiser for Shropshire) to develop and deliver a suite of have recently had a number of exciting and unexpected spider and harvestman ID courses ranging from discoveries.
    [Show full text]
  • Spiders and Harvestmen on Tree Trunks Obtained by Three Sampling Methods
    Arachnologische Mitteilungen / Arachnology Letters 51: 67-72 Karlsruhe, April 2016 Spiders and harvestmen on tree trunks obtained by three sampling methods Ondřej Machač & Ivan H. Tuf doi: 10.5431/aramit5110 Abstract. We studied spiders and harvestmen on tree trunks using three sampling methods. In 2013, spider and harvestman research was conducted on the trunks of selected species of deciduous trees (linden, oak, maple) in the town of Přerov and a surrounding flood- plain forest near the Bečva River in the Czech Republic. Three methods were used to collect arachnids (pitfall traps with a conservation fluid, sticky traps and cardboard pocket traps). Overall, 1862 spiders and 864 harvestmen were trapped, represented by 56 spider spe- cies belonging to 15 families and seven harvestman species belonging to one family. The most effective method for collecting spider specimens was a modified pitfall trap method, and in autumn (September to October) a cardboard band method. The results suggest a high number of spiders overwintering on the tree bark. The highest species diversity of spiders was found in pitfall traps, evaluated as the most effective method for collecting harvestmen too. Keywords: Araneae, arboreal, bark traps, Czech Republic, modified pitfall traps, Opiliones Trees provide important microhabitats for arachnids includ- This study is focused on the comparison of the species ing specific microclimatic and structural conditions in the spectrum of spiders and harvestmen obtained by three sim- bark cracks and hollows (Wunderlich 1982, Nikolai 1986). ple low-cost trap designs – modified pitfall traps, cardboard Some species lives on tree trunks throughout the year, where- bands and sticky traps.
    [Show full text]
  • The Spiders of Robert Collett; a Revision of the First Norwegian Spider Collection
    © Norwegian Journal of Entomology. 5 June 2009 The spiders of Robert Collett; a revision of the first Norwegian spider collection. Part I. Families Araneidae, Gnaphosidae, Sparassidae, Anyphaenidae, Thomisidae, Zoridae and Philodromidae KJETIL AAKRA Aakra, K. 2005. The spiders of Robert Collett; a revision of the first Norwegian spider collection. Part I. Families Araneidae, Gnaphosidae, Sparassidae, Anyphaenidae, Thomisidae, Zoridae and Philodromidae. Norw. J. Entomol. 56, 15–19 The oldest extant Norwegian spider material published by Robert Collett in 1876–77 (families Araneidae, Gnaphosidae, Sparassidae, Anyphaenidae, Thomisidae, Zoridae and Philodromidae) has been reviewed. Valid and invalid records are listed. One new synonymy is established, Gnaphosa pseudolapponica Strand, 1904 = Gnaphosa lapponum (L. Koch, 1866). Even if a relatively large number of the records published by Collett must be invalidated due to the inclusion of juvenile/ subadult material, the collection remains important for Norwegian araneofaunistics. Keywords: Araneae, revision, Norwegian spiders material, Araneidae, Gnaphosidae, Anyphaenidae, Philodromidae Kjetil Aakra, Midt-Troms Museum. P.O.Box 82. NO-9059 Storsteinnes, Norway. E-mail: [email protected] Introduction other Norwegian families. These, however, were published by Strand (1904a,b) almost thirty years In addition to his many other zoological later. Strand described several new gnaphosids publications, Robert Collett (1842–1913) also from this material, one of which, Gnaphosa published
    [Show full text]
  • Abiotic Factors and Biotic Interactions Jointly Drive Spider Assemblages in Nest-Boxes in Mixed Forests
    2017. Journal of Arachnology 45:213–222 Abiotic factors and biotic interactions jointly drive spider assemblages in nest-boxes in mixed forests L’udmila Cˇ ernecka´1, Radek Michalko2, 3 and Anton Krisˇt´ın1: 1Institute of Forest Ecology SAS, Sˇtu´rova 2, SK-96053 Zvolen, Slovakia. E-mail: [email protected]; 2Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlarˇska´ 2, Brno 611 37, Czech Republic; 3Department of Forest Ecology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemeˇdeˇlska´ 1, Brno 613 00, Czech Republic Abstract. Although spiders are common inhabitants of tree cavities, factors that drive their community structure in these microhabitats are little known. Here we investigated whether bark type, season, intraguild predation (IGP) among spiders, and presence of vertebrate predators can influence the spider community structure in tree cavities. We examined spider abundance and the taxonomic and functional composition of spiders in nest-boxes within two mixed forest stands in central Slovakia in 2012–2013. In total, 1211 spiders belonging to 31 species were sampled from 60 nest-boxes at two sites over three seasons. Spider abundance peaked in autumn as spiders sought wintering sites. Guilds and taxonomic composition changed seasonally with spring and autumn communities dominated by ‘‘Other hunters’’ (Anyphaenidae, Clubionidae, Philodromidae) while during summer the community was dominated by ‘‘Sheet web weavers’’ (Linyphiidae). The guild and taxonomic turnover may be partly explained by the interaction between spiders’ phenology and IGP exerted by winter-active spiders on smaller spiders from autumn until spring. Bark type influenced the guild composition as dominance of ‘‘Space web weavers’’ was higher in trees with rough bark than in trees with smooth bark.
    [Show full text]
  • The Diversity and Ecology of the Spider Communities of European Beech Canopy
    The diversity and ecology of the spider communities of European beech canopy Dissertation zur Erlangung des naturwissenschaftlichen Doktorgrades der Bayerischen Julius-Maximilians-Universität Würzburg vorgelegt von Yu-Lung Hsieh geboren in Taipeh, Taiwan Würzburg 2011 In the vegetable as well as in the animal kingdom, the causes of the distribution of species are among the number of mysteries, which natural philosophy cannot reach… —Alexander von Humboldt Table of Contents I. General Introduction……………………………...………………………...…1 II. Effects of tree age on diversity and community structure of arboreal spider: implications for old-growth forest conservation…………………………….11 III. Underestimated spider diversity in a temperate beech forest……………33 IV. Seasonal dynamics of arboreal spider diversity in a temperate forest…….51 V. Neutral and niche theory jointly explain spider diversity within temperate forest canopies…………………………………………………………………69 VI. Biodiversity prediction by applying Verhulst Grey Model (GM 1,1)…....…85 VII. Summary and Outlook………………………………………………………93 VIII. Zusammenfassung und Ausblick……………………………………………99 IX. Acknowledgements………………………………………………………….105 X. Curriculum Vitae and Appendix…………………………………………..107 XI. Ehrenwörtliche Erklärung……………………………………….…………114 Declaration This dissertation is the result of my own work and includes nothing that is the outcome of work done in collaboration. Chapter I General Introduction Canopy research and temperate forests Forests, coral reefs and soil contain the majority of the world’s known biodiversity (Connell 1978; Ozanne et al. 2003; Floren and Schmidl 2008), and as much as half of all the macroscopic life forms are believed to dwell in forest canopies, where they remain insufficiently investigated, or undiscovered entirely (Floren and Schmidl 2008). The study of canopy arthropod communities is a relatively young subfield of ecology, and it can be traced back to the study of the extremely diverse flora and fauna of tropical tree canopies in the late 1970s (Perry 1978; Erwin and Scott 1980; Stork and Hammond 1997).
    [Show full text]
  • An Annotated Checklist of Spiders Deposited in the Arachnida
    Arachnologische Mitteilungen / Arachnology Letters 61: 11-19 Karlsruhe, April 2021 An annotated checklist of spiders deposited in the Arachnida collection of the Institute of Zoology, Scientific Center of Zoology and Hydroecology of the NAS RA, Yerevan, Armenia. Part I Noushig A. Zarikian & Mark Y. Kalashian doi: 10.30963/aramit6102 Abstract. Data on Armenian spider species are summarized. A catalogue of spiders collected during 1988–1998 and deposited in the Institute of Zoology collection, Yerevan, Armenia is given. The review revealed 20 species belonging to nine families. Fourteen species are recorded for Armenia for the first time. Thus, the number of spider species known from Armenia rises to 190. Liocranum rupicola (Walckenaer, 1830) is recorded for the first time in the Caucasus. Keywords: Araneae, Caucasus, country list, new records Zusammenfassung. Kommentierte Checkliste der Spinnentiersammlung des Institute of Zoology, Scientific Center of Zoology and Hydroecology of NAS RA, Jerewan, Armenien. Teil I. Die Daten zu den Spinnen Armeniens werden zusammengefasst. Wir erstel- len einen Katalog der 1988–1998 gesammelten Spinnen, die in der Sammlung des Instituts für Zoologie in Jerewan, Armenien, hinterlegt sind. Diese Liste enthält 20 Arten aus neun Familien. Vierzehn Arten werden erstmals für Armenien nachgewiesen, dadurch erhöht sich die bekannte Artensumme für Armenien auf 190. Liocranum rupicola (Walckenaer, 1830) wird erstmals für den Kaukasus gemeldet. Ամփոփում. ՀՀ ԳԱԱ կենդանաբանության եվ հիդրոէկոլոգիայի գիտական կենտրոնի սարդակերպերի
    [Show full text]
  • The Evolution of Dragline Initiation in Spiders: Multiple Transitions from Multi- to Single-Gland Usage
    diversity Article The Evolution of Dragline Initiation in Spiders: Multiple Transitions from Multi- to Single-Gland Usage Jonas O. Wolff Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia; jonas.wolff@mq.edu.au Received: 21 November 2019; Accepted: 17 December 2019; Published: 19 December 2019 Abstract: Despite the recognition of spider silk as a biological super-material and its dominant role in various aspects of a spider’s life, knowledge on silk use and silk properties is incomplete. This is a major impediment for the general understanding of spider ecology, spider silk evolution and biomaterial prospecting. In particular, the biological role of different types of silk glands is largely unexplored. Here, I report the results from a comparative study of spinneret usage during silk anchor and dragline spinning. I found that the use of both anterior lateral spinnerets (ALS) and posterior median spinnerets (PMS) is the plesiomorphic state of silk anchor and dragline spinning in the Araneomorphae, with transitions to ALS-only use in the Araneoidea and some smaller lineages scattered across the spider tree of life. Opposing the reduction to using a single spinneret pair, few taxa have switched to using all ALS, PMS and the posterior lateral spinnerets (PLS) for silk anchor and dragline formation. Silk fibres from the used spinnerets (major ampullate, minor ampullate and aciniform silk) were generally bundled in draglines after the completion of silk anchor spinning. Araneoid spiders were highly distinct from most other spiders in their draglines, being composed of major ampullate silk only. This indicates that major ampullate silk properties reported from comparative measurements of draglines should be handled with care.
    [Show full text]
  • Spiders and Harvestmen on Tree Trunks Obtained by Three Sampling Methods 67-72 © Arachnologische Gesellschaft E.V
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Arachnologische Mitteilungen Jahr/Year: 2016 Band/Volume: 51 Autor(en)/Author(s): Machac Ondrej, Tuf Ivan H. Artikel/Article: Spiders and harvestmen on tree trunks obtained by three sampling methods 67-72 © Arachnologische Gesellschaft e.V. Frankfurt/Main; http://arages.de/ Arachnologische Mitteilungen / Arachnology Letters 51: 67-72 Karlsruhe, April 2016 Spiders and harvestmen on tree trunks obtained by three sampling methods Ondřej Machač & Ivan H. Tuf doi: 10.5431/aramit5110 Abstract. We studied spiders and harvestmen on tree trunks using three sampling methods. In 2013, spider and harvestman research was conducted on the trunks of selected species of deciduous trees (linden, oak, maple) in the town of Přerov and a surrounding flood- plain forest near the Bečva River in the Czech Republic. Three methods were used to collect arachnids (pitfall traps with a conservation fluid, sticky traps and cardboard pocket traps). Overall, 1862 spiders and 864 harvestmen were trapped, represented by 56 spider spe- cies belonging to 15 families and seven harvestman species belonging to one family. The most effective method for collecting spider specimens was a modified pitfall trap method, and in autumn (September to October) a cardboard band method. The results suggest a high number of spiders overwintering on the tree bark. The highest species diversity of spiders was found in pitfall traps, evaluated as the most effective method for collecting harvestmen too. Keywords: Araneae, arboreal, bark traps, Czech Republic, modified pitfall traps, Opiliones Trees provide important microhabitats for arachnids includ- This study is focused on the comparison of the species ing specific microclimatic and structural conditions in the spectrum of spiders and harvestmen obtained by three sim- bark cracks and hollows (Wunderlich 1982, Nikolai 1986).
    [Show full text]
  • Phantom Spiders: Notes on Dubious Spider Species from Europe
    Arachnologische Mitteilungen 50: 65-80 Karlsruhe, November 2015 Phantom spiders: notes on dubious spider species from Europe Rainer Breitling, Martin Lemke, Tobias Bauer, Michael Hohner, Arno Grabolle & Theo Blick doi: 10.5431/aramit5010 Abstract. A surprisingly large number of European spider species have never been reliably rediscovered since their first description many decades ago. Most of these are probably synonymous with other species or unidentifiable, due to insufficient descriptions or missing type material. Here we discuss about 50 of these cases, declare some names as nomina dubia and establish the following new or re-confirmed synonymies: Agelena mengeella Strand, 1942 = Allagelena gracilens (C. L. Koch, 1841) syn. conf.; Anyphaena accentuata obscura (Sundevall, 1831) = Anyphae- na accentuata (Walckenaer, 1802) syn. conf.; Anyphaena accentuata obscura Lebert, 1877 = Anyphaena accentuata (Walckenaer, 1802) syn. nov.; Araneus diadematus stellatus C. L. Koch, 1836 = Araneus diadematus Clerck, 1757 syn. nov.; Araneus diadematus islandicus (Strand, 1906) = Araneus diadematus Clerck, 1757 syn. nov.; Araneus quadratus minimus Simon, 1929 = Araneus quadratus Clerck, 1757 syn. nov.; Araneus quadratus subviridis (Franganillo, 1913) = Araneus quadratus Clerck, 1757 syn. nov.; Centromerus unctus (L. Koch, 1870) = Leptorhoptrum robustum (Westring, 1851) syn. nov.; Clubiona caliginosa Simon, 1932 = Clubiona germanica Thorell, 1871 syn. nov.; Coelotes atropos anomalus Hull, 1955 = Coelotes atropos (Walckenaer, 1830) syn. nov.; Coelotes atropos silvestris Hull, 1955 = Coelotes atropos (Walckenaer, 1830) syn. nov.; Coelotes obesus Simon, 1875 = Pireneitega pyrenaea (Simon, 1870) syn. conf.; Coelotes simoni Strand, 1907 = Coelotes solitarius (L. Koch, 1868) syn. nov.; Diplocephalus semiglobosus (Westring, 1861) nomen oblitum = Entelecara congenera (O. P.-Cambridge, 1879) syn. nov.; Drassodes voigti (Bösenberg, 1899) = Scotophaeus blackwalli (Thorell, 1871) syn.
    [Show full text]
  • Masaryk University
    MASARYK UNIVERSITY Faculty of Science Department of Botany and Zoology Radek MICHALKO Spiders as bioagens of pome orchard pests Ph.D. Dissertation Supervisor: prof. Mgr. Stanislav Pekár, Ph.D. Brno, 2017 Bibliographic Entry Author: MSc. Radek Michalko Faculty of Science, Masaryk University, Department of Botany and Zoology Title of Dissertation: Spiders as bioagens of pome orchard pests Degree Programme: Biology Field of Study: Ecology Supervisor: prof. Mgr. Stanislav Pekár, Ph.D. Academic Year: 2017 / 2018 Number of Pages 148 Keywords Araneae, Biological control, Cacopsylla pyri, Generalist predator, Food-web, Intraguild predation, Predation, Trophic niche Bibliografický záznam Autor: Mgr. Radek Michalko Přírodovědecká fakulta, Masarykova univerzita, Ústav botaniky a zoologie Název práce: Pavouci v biologickém boji proti škůdcům v ovocných sadech Studijní program: Biologie Studijní obor: Ekologie Vedoucí práce: prof. Mgr. Stanislav Pekár, Ph.D. Akademický rok: 2016 / 2017 Počet stránek 148 Klíčová slova Araneae, Biologický boj, Cacopsylla pyri, Generalistický predátor, Potravní síť, Intraguildová predace, Predace, Trofická nika ABSTRACT Spiders are among the most abundant natural enemies in many agroecosystems. However, their role in biological control is still questionable because, as generalist predators, they may not only reduce pest populations but may also disrupt the biocontrol exerted by other natural enemies. This thesis focuses of improvement of spiders’ biocontrol potential in pome fruit orchards. A special focus was devoted to the system occurring in the pear orchards during winter, involving the winter-active spiders Philodromus spp. (Philodromidae) and Anyphaena accentuata (Anyphaenidae) and a psyllid pest Cacopsylla pyri, which belongs to the most serious pest of pears in Europe. This dissertation thesis consists of six studies.
    [Show full text]