DOCSLIB.ORG

The Longterm Impacts of Clear-Cut Logging on Insect

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Longterm Impacts of Clear-Cut Logging on Insect THE LONGTERM IMPACTS OF CLEAR-CUT LOGGING ON INSECT COMMUNITIES IN THE BOREAL MIXEDWOOD FORESTS OF NORTHEASTERN ONTARIO Alissa Sugar A thesis submitted in conformity with the requirements for the degree of Master of Science in Forestry Graduate Faculty of Forestry University of Toronto O Copyright by Alissa Sugar 2000 National Library Bibliothèque nationale 1+1 of Canada du Canada Acquisitions and Acquisitions et Bibliographie Services services bibliographiques 395 Wellington Street 395, rue Wdlig(on OttawaON KIA O(J4 OnawaON KlAONi) canada CaMda The author has granted a non- L'auteur a accordé une Licence non exclusive Licence aliowing the exchive permettant à la National Library of Canada to Bibliothèque natioaale du Canada de reproduce, loan, distribute or seii reproduire, prêter, distribuer ou copies of this thesis in microform, vendre des copies de cette thèse sous paper or electronk formats. la fome de microfiche/nlm, de reproduction sur papier ou sur format électronique. The author retains ownership of the L'auteur conserve la propriété du copyright in this thesis. Neither the droit d'auteur qui protège cette thèse. thesis nor substantial extracts from it Ni la thèse ni des extraits substantiels may be printed or othenwise de celle-ci ne doivent être imprimés reproduced without the author's ou autrement reproduits sans son pennission. autorisation. The long-term impacts of clear-cut loggiag on insect communities in the boreal mixedwood forests of northeastern Ontario. Masters of Science in Forestry. 2000. Alissa Sugar, Faculty of Forestry, University of Toronto. ABSTRACT Large-scale clear-cut logging in the boreal forest may contribute to ihe loss of insect b iodiversity through reductions in the amount of older, undisturbed forest and through stand-level decreases in structural heterogeneity. To investigate the long-term effects of clear-cutting on insect comrnunities, hymenopteran and dipteran communities were surveyed with Malaise traps during the summer of 1998 in 12 mature (30-50 year old) post-logged and 12 unlogged boreal mixedwood stands in northeastem Ontario. Unlogged stands yielded a significantly higher abundance of Dolichopodidae (long-legged flies), several Syrphidae (hoverflies) species, and the Syrphidae larval wood-inhabiting guild. These differences were predominantly due to the older ages of the unlogged stands which supported different habitat features, though some evidence of a logging effect per se was found. These resuits dernonstrate the need for maintairring features characteristic of older forests in post-logged stands, and suggest a potential loss of insect species characteristic of older forests, particularly species dependent on downed woody debris, in the face of continued clear-cut logging activities. 1 am extremely grateful to my supervisor, Jay Malcolm, for his support, advice, and ongoing enthusiasm, and for allowing me the opportunity as his first graduate student to become involved with this project. 1 would like to extend thanks to my committee members, Chris Darlicg, Justina Ray, and Sandy Smith for their helphl comrnents, both during and outside of the committee meetings. Thanks atso to Teny Carleton who in addition to J. Malcolm and J. Ray, was instrumental in creating and designing this project. Many thanks must be granted to Paul Gelok, who's invaluable assistance in the field allowed for a successhl and enjoyable field season, and Adam Tatamic, who through his hours and hours of sorting sarnples, made an improbable task actually feasible. 1 wodd like to thank Dr. Bill Crins (Ontario Ministry of Natural Resources, Peterborough) and Dr. Henri Goulet (Eastern Cereal and Oil Seed Research Centre, Ottawa), who took time out of their busy schedules to provide insect identifications. 1 would also like to acknowledge John Swam who provided helpfui information on insect drying techniques and provided access to the Royal Ontario Museum insect collections. 1 owe a great deal of thanks to some of rny fellow students, Warren Mabee, Rob Kmus, and Aaron Deans for their assistance and support, and in particular to Brian Campbell, who in addition to collecting the vast majority of the habitat data, has provided substantial help and support throughout the entire production of the thesis. Finally, much gratitude must be extended to rny family for their ongoing support and love. This project was only possible through the financial support of the National Science Engineering and Research Council (NSERC), the Richard Ivey Foundation, Wildlife Habitat Canada, and the Faculty of Forestry, University of Toronto. S.. 111 .. Abstract .................................................................... ...ii Acknowtedgments ........................................................... 111 TableofContents ............................................................ iv ListofTables ............................................................... vi ListofFigures ............................................................... ix General Introduction .......................................................... 1 CHAPTER 1 The impacts of clear-cutting on the abundances of selected higher-level dipteran and hymenopteran taxa in the boreal mixedwood forests of northeastern Ontario ..................................................................... 9 Introduction ............................................................... 9 Methods ................................................................. 15 Studydesign ...........................................................15 MentiQing sites ..................................................... 15 Ecozone ........................................................... 19 Agecriteria ........................................................ 20 Tree increment cores .............................................. 21 Standage ....................................................... 21 Insect sampling ..................................................... 23 Habitatvariables .................................................... 25 Structural variables ............................................... 25 Canopyvariables ................................................. 28 Substratevariables ................................................ 30 Environmental variables .......................................... -31 Insect analysis ..................................................... -32 Multivariate analysis ................................................ -34 Bivariate analysis ................................................... -36 Results .................................................................. 35 Habitat associations ..................................................... 50 Ecozone .............................................................. 60 Trophicanalysis ........................................................ 61 Discussion ............................................................... 63 CHAPTER 2 Hovertlies (Diptera: Syrphidae) and their responses to clear-cut logging in the boreal mixedwood forests on northeastern Ontario ............................. 70 Introduction .............................................................. 70 Methods ................................................................. 77 Species-level analyses ................................................... 78 Trophic analyses ....................................................... 80 Multivariate analyses ................................................... -81 Allspecies ......................................................... 81 Feedingandhabitatguilds ............................................. 82 Results ............................................................... 83 Sexdifferences ......................................................... 89 Logging effects on abundance and diversity ................................. -89 Feeding and habitat guilds ................................................ 94 Habitat variables ...................................................... -98 Multivariate analyses ................................................... 102 Ecozoneeffect ........................................................ 117 Discussion .............................................................. 120 Sex differences ........................................................ 120 Loggingeffect ........................................................ 121 Ecozoneeffect ........................................................129 Conclusion ........................................................... 130 CHAPTER 3 The influence of clear-cut logging on generic- and species-level patterns of sawfly diversity (Hymenoptera: Symphyta) in boreal mixedwood forests of northeastern Ontario ................................................................... 132 Introduction ............................................................. 132 Methods ................................................................ 136 Species- and generic-level analyses ........................................ 136 Host plant analyses .................................................... 138 Multivariate analyses ................................................... 139 Results ................................................................ 146 Loggingeffect ........................................................ 147 Host plant analyses .................................................... 150 Muhivariate anaiyses ................................................... 157 Discussion .............................................................
Load more

Recommended publications
  • Diptera: Syrphidae
    This is a repository copy of The relationship between morphological and behavioral mimicry in hover flies (Diptera: Syrphidae).. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/80035/ Version: Accepted Version Article: Penney, HD, Hassall, C orcid.org/0000-0002-3510-0728, Skevington, JH et al. (2 more authors) (2014) The relationship between morphological and behavioral mimicry in hover flies (Diptera: Syrphidae). The American Naturalist, 183 (2). pp. 281-289. ISSN 0003-0147 https://doi.org/10.1086/674612 Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version - refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher’s website. Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ The relationship between morphological and behavioral mimicry in hover flies (Diptera: Syrphidae)1 Heather D. Penney, Christopher Hassall, Jeffrey H. Skevington, Brent Lamborn & Thomas N. Sherratt Abstract Palatable (Batesian) mimics of unprofitable models could use behavioral mimicry to compensate for the ease with which they can be visually discriminated, or to augment an already close morphological resemblance.
    [Show full text]
  • Diptera, Syrphidae) on the Balkan Peninsula
    Dipteron Band 2 (6) S.113-132 ISSN 1436-5596 Kiel,15.9.1999 New data for the tribes Milesiini and Xylotini (Diptera, Syrphidae) on the Balkan Peninsula [Neue Daten fur die Triben Milesiini und Xylotini (Diptera, Syrphidae) van der Balkanhalbinsel] Ante VUJIC (Novi Sad) & Vesna MILANKOV (Novi Sad) Abstract: Distributional data are presented for four species of the tribe Milesiini (genus Criorhina MEIGEN, 1822) and 13 species of four genera of the tribe Xylotini (Brachypalpoides HIPPA, 1978, Brachypalpus MACQUART, 1834, Chalcosyrphus CURRAN, 1925, Xylota MErGEN, 1822) occuring on the Balkan Peninsula. The species Criorhina ranunculi (PANZER, [1804]) is recorded on the Balkan Peninsula for the fIrst time. A speci• men of Chalcosyrphus valgus (GMELIN, 1790) from Dubasnica mountain (Serbia) presents the fust verifIed record of the species on the Balkan Peninsula. Previously published reports of Xylota coeruleiventris ZETTERSTEDT,1838 on the Peninsula actually belong to X. jakuto• rum BAGACHANOVA,1980. Brachypalpus laphriformis (FALLEN, 1816), B. valgus (PANZER, [1798]), Criorhina asilica (FALLEN, 1816), Xylota jakutorum and X. jlorum (FABRICIUS, 1805) have been collected for the fust time in Montenegro. The record of Brachypalpus val· gus from Verno mountain is the first for Greece. A key to genera and species of the tribe Xylotini on the Balkan Peninsula and illustrations of characteristic morphological features are presented. Key words: Syrphidae, Brachypalpoides, Brachypalpus, Chalcosyrphus, Criorhina, Xylota, Balkan Peninsula Zusammenfassung: Verbreitungsangaben fur vier Arten der Tribus Milesiini (Gattung Criorhina MEIGEN,1822) und 13 Arten aus vier Gattung der Tribus Xylotini (Brachypalpoides HrpPA, 1978, Brachypalpus MACQUART,1834, Chalcosyrphus CURRAN,1925, Xylota MElGEN,1822), die auf der Bal• kanhalbinsel vertreten sind, werden vorgestellt.
    [Show full text]
  • A Contribution to the Knowledge of the Tenthredinidae (Symphyta, Hymenoptera)
    TurkJZool 28(2004)37-54 ©TÜB‹TAK AContributiontotheKnowledgeoftheTenthredinidae (Symphyta,Hymenoptera)FaunaofTurkey PartI:TheSubfamilyTenthredininae* ÖnderÇALMAfiUR,HikmetÖZBEK AtatürkUniversity,FacultyofAgriculture,DepartmentofPlantProtection, 25240Erzurum-TURKEY Received:07.02.2003 Abstract: ThesubfamilyTenthredininaeinthefamilyTenthredinidaewastreatedinthispartofthestudyregardingthesawfly (Symphyta,Hymenoptera)faunaofTurkey.Thematerialswerecollectedfromvariouslocalitiesaroundthecountry,though examplesfromeasternTurkeyarepredominant.Afterexaminingmorethan2500specimens,57speciesin8generawererecorded. ElevenspecieswerenewforTurkishfauna;ofthese3specieswererecordedforthefirsttimeasAsianfauna.Furthermore,3 specieswereendemicforTurkey.ThedistributionandnewareasaswellasthehostplantsofsomespeciesaroundTurkeyandth e worldweregiven.Foreachspeciesitschorotypewasreported. KeyWords: Hymenoptera,Tenthredinidae,Tenthredininae,Fauna,Turkey Türkiye’ninTenthredinidae(Symphyta,Hymenoptera)Faunas›naKatk›lar Bölüm:ITenthredininaeAltfamilyas› Özet: Türkiye’nintestereliar›(Symphyta,Hymenoptera)faunas›n›ntespitineyönelikçal›flmalar›nbubölümünde;Tenthredininae (Tenthredinidae)altfamilyas›eleal›nm›fl;incelenen2500’denfazlaörneksonucu,sekizcinseba¤l›toplam57türsaptanm›flt›r. Türkiyefaunas›içinyeniolduklar›saptanan11türdenüçününAsyafaunas›içindeyenikay›tolduklar›belirlenmifltir.ÜçtürünTürkiye içinendemikolduklar›saptanm›flt›r.Tespitedilentürlerinhementamam›içinyeniyay›lmaalanlar›belirlenmifl,birço¤unun konukçular›bulunmufltur.Türkiyevedünyadakida¤›l›fllar›chorotype’leriilebirlikteverilmifltir.
    [Show full text]
  • Hoverfly Visitors to the Flowers of Caltha in the Far East Region of Russia
    Egyptian Journal of Biology, 2009, Vol. 11, pp 71-83 Printed in Egypt. Egyptian British Biological Society (EBB Soc) ________________________________________________________________________________________________________________ The potential for using flower-visiting insects for assessing site quality: hoverfly visitors to the flowers of Caltha in the Far East region of Russia Valeri Mutin 1*, Francis Gilbert 2 & Denis Gritzkevich 3 1 Department of Biology, Amurskii Humanitarian-Pedagogical State University, Komsomolsk-na-Amure, Khabarovsky Krai, 681000 Russia 2 School of Biology, University Park, University of Nottingham, Nottingham NG7 2RD, UK. 3 Department of Ecology, Komsomolsk-na-Amure State Technical University, Komsomolsk-na-Amure, Khabarovsky Krai, 681013 Russia Abstract Hoverfly (Diptera: Syrphidae) assemblages visiting Caltha palustris in 12 sites in the Far East were analysed using partitioning of Simpson diversity and Canonical Coordinates Analysis (CCA). 154 species of hoverfly were recorded as visitors to Caltha, an extraordinarily high species richness. The main environmental gradient affecting syrphid communities identified by CCA was human disturbance and variables correlated with it. CCA is proposed as the first step in a method of site assessment. Keywords: Syrphidae, site assessment for conservation, multivariate analysis Introduction It is widely agreed amongst practising ecologists that a reliable quantitative measure of habitat quality is badly needed, both for short-term decision making and for long-term monitoring. Many planning and conservation decisions are taken on the basis of very sketchy qualitative information about how valuable any particular habitat is for wildlife; in addition, managers of nature reserves need quantitative tools for monitoring changes in quality. Insects are very useful for rapid quantitative surveys because they can be easily sampled, are numerous enough to provide good estimates of abundance and community structure, and have varied life histories which respond to different elements of the habitat.
    [Show full text]
  • Sambia Succinica, a Crown Group Tenthredinid from Eocene Baltic Amber (Hymenoptera: Tenthredinidae)
    Insect Systematics & Evolution 43 (2012) 271–281 brill.com/ise Sambia succinica, a crown group tenthredinid from Eocene Baltic amber (Hymenoptera: Tenthredinidae) Lars Vilhelmsena,* and Michael S. Engelb aNatural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark bDivision of Entomology (Paleoentomology), Natural History Museum and Department of Ecology & Evolutionary Biology, 1501 Crestline Drive, Suite 140, University of Kansas, Lawrence KS 66045, USA *Corresponding author, e-mail: [email protected] Published 17 December 2012 Abstract Sambia succinica gen. et sp.n. from Eocene Baltic amber is described and illustrated. It is apparently the first amber fossil that can be definitively assigned to Tenthredininae. It displays two diagnostic forewing characters for this subfamily: having a bend distally in vein R and the junctions of veins M and Rs + M with vein R being some distance from each other. The variance and possible transitions between the anal vein configurations among the genera in Tenthredininae is briefly discussed. Keywords amber inclusion, sawfly, Tertiary, Eocene, taxonomy Introduction Tenthredinidae is the largest family of non-apocritan Hymenoptera by far, comprising more than 5500 described species (Huber 2009; Taeger & Blank 2010). Together with five other families they comprise the Tenthredinoidea or true sawflies. The larvae of the members of the superfamily are all herbivores and most are external feeders on green parts of angiosperms; however, other host plants and feeding modes (e.g., leafrolling, leafmining, or galling in leaves, buds and shoots; see Nyman et al. 1998, 2000) do occur. Recent comprehensive treatments of the phylogeny of the basal hymenopteran lineages, while providing strong support for the Tenthredinoidea, have consistently failed to retrieve the Tenthredinidae as monophyletic (Vilhelmsen 2001; Schulmeister 2003; Ronquist et al.
    [Show full text]
  • The Hymenoptera of a Dry Meadow on Limestone
    POLISH JOURNAL OF ECOLOGY 47 1 29--47 1999 (Pol. J. Ecol.) W em er ULRICH Nicholas Copemicus University in Torun Department of Animal Ecology 87-100 Torun. Gagarina 9: Poland e-mail: ulrichw @ cc.uni.torun.pl 'I'HE HYMENOPTERA OF A DRY MEADOW ON LIMESTONE: SPECIES COMPOSITION, ABUNDANCE AND BIOMASS ABSTRACT: In 1986 and 1988 the hymenopterous fauna of a semixerophytic meadow on lime­ stone near Gottingen (FRG) was studied using ground-photo-eclectors. A total of 4982 specimens be­ longing to 475 different species \vere collected. Extrapolations from double-log functions revealed that there may be as many as 1330 parasitoid species present per year. 455 of the 475 species were parasito­ ids. 155 of them attack dipterans. 48 lepidopterans. 36 beetles. 23 wasps, 22 plant hoppers and 13 ap­ hids. 47 of the species are egg-parasitoids and parasitoids of miners. ectophytophages count for 44 of 2 the \V asp species. The abundance of the wasp fauna was rather high ( 1120 ± 53 in d. m- a- I ( 1986) and 2 1 335 ± 42 ind. m - a- ( 1988). Most abundant were the parasitoids of miners, gall-makers and the egg­ parasitoids. Compared \vith the high abundance the biomass was low. In 1986 the wasps weighed a total 2 1 2 1 of 194 ± 24 n1gDW m- a- and in 1988 only 69 ± 20 mgDW m- a- . The parasitoids of ectophytopha­ gous lepidopterans and coleopterans counted for n1ore than half of the whole biomass. KEY WORDS: Hymenoptera. parasitoids. faunal composition, density, biomass. species numbers, local extinction. 1. INTRODUCTION The insect order Hymenoptera is the species is very limited.
    [Show full text]
  • New Data on the Sawfly Fauna of Corsica with the Description of a New Species Pontania Cyrnea Sp.N
    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Nachrichtenblatt der Bayerischen Entomologen Jahr/Year: 2005 Band/Volume: 054 Autor(en)/Author(s): Liston Andrew D., Späth Jochen Artikel/Article: New data on the sawfly fauna of Corsica with the description of a new species Pontania cyrnea sp.n. (Hymenoptera, Symphyta) 2-7 © Münchner Ent. Ges., download www.biologiezentrum.at NachrBl. bayer. Ent. 54 (1 /2), 2005 New data on the sawfly fauna of Corsica with the description of a new species Pontania cyrnea sp. n. (Hymenoptera, Symphyta) A. D. LISTON & J. SPÄTH Abstract Records of 38 taxa of Symphyta collected recently by the authors in Corsica are presented. 15 identified species are additions to the known Corsican fauna. Pontania cyrnea sp. n. is described and compared with the morphologically similar P. joergcnseni ENSLIN. The family Xyelidae is recorded for the first time on the island. A total of 71 symphytan species are now known from Corsica. Introduction CHEVIN (1999) published a list of 56 species of sawflies and other Symphyta (woodwasps, orus- sids) from Corsica. His paper is based mainly on material made available to him by specialists in other insect groups who have collected there. He also included data on specimens from Corsica in the Muséum national d'Histoire naturelle (Paris), and mentioned a few taxa already recorded in papers by other symphytologists. The island had previously been visited by a single sawfly specialist, who examined only the leaf-mining species (BUHR 1941). In spring 2004 the junior author stated his intent to collect Symphyta in Corsica.
    [Show full text]
  • Impact De La Densité De Cerfs De Virginie Sur Les Communautés D'insectes De L'île D'anticosti
    PIERRE-MARC BROUSSEAU IMPACT DE LA DENSITÉ DE CERFS DE VIRGINIE SUR LES COMMUNAUTÉS D'INSECTES DE L'ÎLE D'ANTICOSTI Mémoire présenté à la Faculté des études supérieures de l’Université Laval dans le cadre du programme de maîtrise en biologie pour l’obtention du grade de maître ès sciences (M. Sc.) DÉPARTEMENT DE BIOLOGIE FACULTÉ DES SCIENCES ET GÉNIE UNIVERSITÉ LAVAL QUÉBEC 2011 © Pierre-Marc Brousseau, 2011 Résumé Les surabondances de cerfs peuvent nuire à la régénération forestière et modifier les communautés végétales et ainsi avoir un impact sur plusieurs groupes d'arthropodes. Dans cette étude, nous avons utilisé un dispositif répliqué avec trois densités contrôlées de cerfs de Virginie et une densité non contrôlée élevée sur l'île d'Anticosti. Nous y avons évalué l'impact des densités de cerfs sur les communautés de quatre groupes d'insectes représentant un gradient d'association avec les plantes, ainsi que sur les communautés d'arthropodes herbivores, pollinisateurs et prédateurs associées à trois espèces de plantes dont l'abondance varient avec la densité de cerfs. Les résultats montrent que les groupes d'arthropodes les plus directement associés aux plantes sont les plus affectés par le cerf. De plus, l'impact est plus fort si la plante à laquelle ils sont étroitement associés diminue en abondance avec la densité de cerfs. Les insectes ont également démontré une forte capacité de résilience. ii Abstract Deer overabundances can be detrimental to forest regeneration and can modify vegetal communities and consequently, have an indirect impact on many arthropod groups. In this study, we used a replicated exclosure system with three controlled white-tailed deer densities and an uncontrolled high deer density on Anticosti Island.
    [Show full text]
  • Chalcosyrphus Eunotus (Loew, 1873) (Diptera, Syrphidae): Its Status, Distribution, Ecology and Conservation
    Dipterists Digest 2010 17, Chalcosyrphus eunotus (Loew, 1873) (Diptera, Syrphidae): its status, distribution, ecology and conservation ANDY JUKES 6, Dovedale Road, Kingsley, Staffordshire Moorlands Staffordshire, ST10 2AD; e-mail: [email protected] Summary Chalcosyrphus eunotus was, until recently an under recorded species from an unstudied niche, coarse woody debris. After years of speculation as to the larval habitat for this hoverfly, new field and captive rearing observations confirm the assumption that it develops in coarse woody debris, specifically semi-saturated timber within small woodland streams. Observations by the author also shed more light on the previously unknown mating behaviour, oviposition and territoriality of the species. Introduction Chalcosyrphus eunotus (Loew, 1873) (Fig. 1) is a seemingly rare hoverfly associated with a very localised habitat niche (semi-submerged logs in woodland streams). Although a large fly, it is seldom seen and very little is known about its life cycle and habits. It was newly recorded in Staffordshire in 2004 and has since been recorded at a number of sites in three main areas of the county, a key area being Cannock Chase AONB (Area of Outstanding Natural Beauty). This led to the commissioning of an ecological study of C. eunotus, of which the purpose was to discover further information about the ecology of the fly and to highlight the importance of coarse woody debris as a resource. Another key purpose of this study is to add weight and knowledge to the importance of the UKBAP Rivers and Streams Habitat Action plan (UKHAP) and key features that are present within these water systems such as coarse woody debris.
    [Show full text]
  • Technical Series, No
    ' ' Technical Series, No. 20, Part II. U. S. DEPARTMENT OF AGRICULTURE, BXJRE^TJ OK' TClSrTOM:OIL.OG^Y. L, 0. HOWARD, Entomologist and Chief of Bureau. TECHNICAL PAPERS ON MISCELLANEOUS .FOREST INSECTS. II. THE GENOTYPES OF THE SAWFLIES AND WOODWASPS, OR THE SUPERFAMILY TENTHKEDINOIDEA. S. A. ROHWER, Agent and Expert. Issued M.\rch 4, 1911. WASHINGTON: GOVERNMENT PRINTING OFFICE. 1911. Technical Series, No. 20, Part II. U. S. DEPARTMENT OF AGRICULTURE. L. 0. HOWARD, Entomologist and Chief of Bureau. TECHNICAL PAPERS ON MISCELLANEOUS FOREST INSECTS. II. THE GENOTYPES OF THE SAWFLIES AND WOODWASPS, OR THE SUPERFAMILY TENTHREDINOIDEA. BY S. A. ROHWER, Agent and Expert. Issued Makch 4, 1911. WASHINGTON: GOVERNMENT PRINTING OFFICE. 1911. B UREA U OF ENTOMOLOGY. L. O. Howard, Entomologist and Chief of Bureau. C. L. Marlatt, Entomologist and Acting Chief in Absence of Chief. R. S. Clifton, Executive Assistant. W. F. Tastet, Chief Clerk. F. H. Chittenden, in charge of truck crop and stored product insect investigations. A. D. Hopkins, in charge offorest insect investigations. W. D. Hunter, in charge of southern field crop insect investigations. F. M. Webster, in charge of cereal and forage insect investigations. A. L. Quaintance, in charge of deciduous fruit insect investigations. E. F. Phillips, in charge of bee culture. D. M. Rogers, in charge of preventing spread of moths, field -work. RoLLA P. Currie, in charge of editorial work. Mabel Colcord, librarian. , Forest Insect Investigations. A. D. Hopkins, in charge. H. E. Burke, J. L. Webb, Josef Brunner, S. A. Rohwer, T. E. Snyder, W. D. Edmonston, W. B. Turner, agents and experts.
    [Show full text]
  • Syrphidae (Diptera) of Northern Ontario and Akimiski Island, Nunavut: New Diversity Records, Trap Analysis, and DNA Barcoding
    Syrphidae (Diptera) of northern Ontario and Akimiski Island, Nunavut: new diversity records, trap analysis, and DNA barcoding A Thesis Submitted to the Committee of Graduate Studies in Partial Fulfillment for the Degree of Master of Science in the Faculty of Arts and Science TRENT UNIVERSITY Peterborough, Ontario, Canada © Copyright by Kathryn A. Vezsenyi 2019 Environmental and Life Sciences M.Sc Graduate Program May 2019 ABSTRACT Syrphidae (Diptera) of northern Ontario and Akimiski Island, Nunavut: new diversity records, trap analysis, and DNA barcoding Kathryn A. Vezsenyi Syrphids, also known as hover flies (Diptera: Syrphidae) are a diverse and widespread family of flies. Here, we report on their distributions from a previously understudied region, the far north of Ontario, as well as Akimiski Island, Nunavut. I used samples collected through a variety of projects to update known range and provincial records for over a hundred species, bringing into clearer focus the distribution of syrphids throughout this region. I also analysed a previously un-tested trap type for collecting syrphids (Nzi trap), and report on results of DNA analysis for a handful of individuals, which yielded a potential new species. KEYWORDS Syrphidae, Diptera, insects, northern Ontario, Akimiski Island, diversity, insect traps, long term study, range extension, new species, DNA barcoding ii ACKNOWLEDGMENTS This thesis is written in dedication to my co-supervisor David Beresford, without whom none of this would have been possible. You have spent many long hours helping me with my data, my writing, and overall, my life. Your tireless, unwavering belief in me is one of the things that got me to where I am today, and has helped me grow as a person.
    [Show full text]
  • Composition and Seasonal Abundance of Hover Flies (Diptera: Syrphidae) at a Midelevation Site in Central Utah
    Western North American Naturalist Volume 77 Number 4 Article 8 1-12-2018 Composition and seasonal abundance of hover flies (Diptera: Syrphidae) at a midelevation site in central Utah Tyson J. Terry Brigham Young University, Provo, UT, [email protected] C. Riley Nelson Brigham Young University, Provo, UT, [email protected] Follow this and additional works at: https://scholarsarchive.byu.edu/wnan Recommended Citation Terry, Tyson J. and Nelson, C. Riley (2018) "Composition and seasonal abundance of hover flies (Diptera: Syrphidae) at a midelevation site in central Utah," Western North American Naturalist: Vol. 77 : No. 4 , Article 8. Available at: https://scholarsarchive.byu.edu/wnan/vol77/iss4/8 This Article is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Western North American Naturalist by an authorized editor of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Western North American Naturalist 77(4), © 2017, pp. 487–499 COMPOSITION AND SEASONAL ABUNDANCE OF HOVER FLIES (DIPTERA: SYRPHIDAE) AT A MIDELEVATION SITE IN CENTRAL UTAH TYson J. TerrY 1,2 and C. RileY Nelson 1 ABSTRACT .—Dipteran pollinators are important in the successful reproduction of manY plants, Yet are less studied than other groups. We knoW that these insects affect the biodiVersitY of natural landscapes, Yet much remains unknoWn about the eXtent of their influence in pollination sYstems and flight seasons. In this studY, We collected hoVer flies (Diptera: SYrphidae) With 3 Malaise traps at a mideleVation site in central Utah throughout the flies’ flight season of 2015.
    [Show full text]