Hemiptera: Dictyopharidae)

Total Page:16

File Type:pdf, Size:1020Kb

Hemiptera: Dictyopharidae) A GENERIC REVISION OF THE NEW WORLD DICTYOPHARINAE (HEMIPTERA: DICTYOPHARIDAE) by Leo R. Donovall, III A thesis submitted to the Faculty of the University of Delaware in partial fulfillment of the requirements for the degree of Master of Science in Entomology Fall 2008 Copyright 2008 Leo R. Donovall, III All Rights Reserved 1460102 1460102 2009 A GENERIC REVISION OF THE NEW WORLD DICTYOPHARINAE (HEMIPTERA: DICTYOPHARIDAE) by Leo R. Donovall, III Approved: __________________________________________________________ Charles R. Bartlett, Ph.D. Professor in charge of thesis on behalf of the Advisory Committee Approved: __________________________________________________________ Douglas Tallamy, Ph.D. Chair of the Department of Entomology and Wildlife Ecology Approved: __________________________________________________________ Robin Morgan, Ph.D. Dean of the College of Agriculture and Natural Resources Approved: __________________________________________________________ Debra Hess Norris, M.S. Vice Provost for Graduate and Professional Education ACKNOWLEDGMENTS I would like to thank: Charles Bartlett, Jason Cryan, Doug Tallamy and Cliff Kiel for their guidance in serving on my thesis committee; Anthony Gonzon, Lois O’Brien, Julie Urban and Lou Dietz for all of their assistance collecting and sending specimens, locating references and listening to and commenting on the ideas that lead to this work; the various collections managers that loaned specimens; Bob Brown for helping with the many troublespots in translating the German descriptions; and, most importantly, my wife, Sara, and our family and friends for all of their patience and support through the long hours involved in researching and writing this thesis. iii TABLE OF CONTENTS LIST OF TABLES ........................................................................................................vi LIST OF FIGURES......................................................................................................vii ABSTRACT ................................................................................................................... x CHAPTER 1: INTRODUCTION................................................................................... 1 1.1 General Introduction..................................................................................... 1 1.2 Family Features ............................................................................................ 4 1.3 Taxonomic History....................................................................................... 6 CHAPTER 2: MATERIALS AND METHODS.......................................................... 10 2.1 Specimens Examined.................................................................................. 10 2.2 Species Synonymy List .............................................................................. 14 2.3 Morphological Overview............................................................................ 15 CHAPTER 3: GENERIC DESCRIPTIONS ................................................................ 24 3.1 Key to the New World Dictyopharinae...................................................... 24 3.2 Descriptions of Tribes and Genera of New World Dictyopharinae ........... 32 3.2.1 Tribe Cladodipterini .......................................................................... 32 Genus Cladodiptera.............................................................................. 34 Genus Diacira ...................................................................................... 42 Genus Protachilus ................................................................................ 48 3.2.2 Tribe Igavini ...................................................................................... 55 Genus Igava ......................................................................................... 56 Genus Dictyopharoides ....................................................................... 62 Genus Hydriena ................................................................................... 68 Genus Neomiasa .................................................................................. 73 Genus Paramisia ................................................................................. 75 Genus Toropa ...................................................................................... 81 Genus Trigava ..................................................................................... 87 3.2.3 Tribe Lappidini.................................................................................. 92 Genus Lappida ..................................................................................... 94 Genus Paralappida ............................................................................ 102 3.2.4 Tribe Nersiini................................................................................... 108 Genus Nersia ..................................................................................... 110 Genus Megadictya ............................................................................. 120 Genus Melicharoptera ....................................................................... 122 Genus Plegmatoptera ........................................................................ 128 Genus Pteroplegma ........................................................................... 138 Genus Retiala .................................................................................... 145 iv Genus Trimedia ................................................................................. 150 3.2.5 Tribe Rhynchomitrini ...................................................................... 155 Genus Rhynchomitra ......................................................................... 156 Genus Digitocrista ............................................................................. 166 Genus Dorimargus ............................................................................ 171 Genus Eudictya .................................................................................. 177 Genus Hyalodictyon .......................................................................... 182 Genus Mitrops ................................................................................... 189 Genus Parahasta ............................................................................... 195 Genus Pharodictyon .......................................................................... 198 Genus Taractellus .............................................................................. 203 3.2.6 Tribe Scoloptini............................................................................... 209 Genus Scolops ................................................................................... 211 Genus Brachytaosa ............................................................................ 239 Genus Phylloscelis ............................................................................. 244 Genus Sicorisia .................................................................................. 255 3.2.7 Tribe Sicorini................................................................................... 260 Genus Sicoris ..................................................................................... 261 3.2.8 Tribe Taosini ................................................................................... 266 Genus Taosa ...................................................................................... 268 3.3 Notes on Excluded Neotropical Taxa....................................................... 274 CHAPTER 4: DISCUSSION ..................................................................................... 278 REFERENCES ........................................................................................................... 284 APPENDIX 1: CHECKLIST OF THE DICTYOPHARIDAE OF THE WORLD.... 301 APPENDIX 2: HOST PLANT USE BY DICTYOPHARIDAE................................ 387 APPENDIX 3: DISTRIBUTION MAPS OF NEW WORLD DICTYOPHARINAE..................................................................................... 393 v LIST OF TABLES Table 1. Published (i.e. current) tribal classification of the Dictyopharinae found in the New World (Emeljanov, 1983). ............................................ 8 Table 2. Number of specimens examined by collection........................................ 10 Table 3. Revised tribal classification of the Dictyopharinae found in the New World. ........................................................................................... 279 vi LIST OF FIGURES Figure 1. Generalized dorsal, lateral and frontal habitus of the head and pronotum of Dictyopharidae................................................................. 17 Figure 2. Generalized dorsal habitus of Dictyopharidae. .................................... 19 Figure 3. Generalized forewing venation of Dictyopharidae. ............................. 21 Figure 4. Generalized ventral view of apex of hind leg of Dictyopharidae......... 23 Figure 5. Dorsal (d), lateral (l) and frontal (f) habitus of Cladodpitera limpida.................................................................................................. 35 Figure 6. Dorsal (d), lateral (l) and frontal (f) habitus of Diacira varia.............. 43 Figure 7. Dorsal (d), lateral (l) and frontal (f) habitus of Protachilus rex........... 49 Figure 8. Dorsal (d), lateral (l) and frontal (f) habitus of Igava callipepla. ........ 57 Figure 9. Dorsal (d), lateral (l) and frontal
Recommended publications
  • Alternative Transmission Patterns in Independently Acquired Nutritional Co-Symbionts of Dictyopharidae Planthoppers
    bioRxiv preprint doi: https://doi.org/10.1101/2021.04.07.438848; this version posted April 9, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. Alternative transmission patterns in independently acquired nutritional co-symbionts of Dictyopharidae planthoppers Anna Michalik1*, Diego C. Franco2, Michał Kobiałka1, Teresa Szklarzewicz1, Adam Stroiński3, Piotr Łukasik2 1Department of Developmental Biology and Morphology of Invertebrates, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland 2Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland 3Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00-679 Warszawa, Poland Abstract Keywords: planthoppers, nutritional endosymbiosis, Sap-sucking hemipterans host specialized, heritable transovarial transmission microorganisms that supplement their unbalanced diet with essential nutrients. These microbes show unusual features Significance statement that provide a unique perspective on the evolution of life but Sup-sucking hemipterans host ancient heritable have not been systematically studied. Here, we combine microorganisms that supplement their unbalanced diet with microscopy with high-throughput sequencing to revisit 80- essential nutrients, and which have repeatedly been year-old reports on the diversity of symbiont transmission complemented or replaced by other microorganisms. They modes in a broadly distributed planthopper family need to be reliably transmitted to subsequent generations Dictyopharidae. We show that in all species examined, the through the reproductive system, and often they end up using ancestral nutritional endosymbionts Sulcia and Vidania are the same route as the ancient symbionts.
    [Show full text]
  • Jumping Mechanisms in Dictyopharid Planthoppers (Hemiptera
    © 2014. Published by The Company of Biologists Ltd | The Journal of Experimental Biology (2014) 217, 402-413 doi:10.1242/jeb.093476 RESEARCH ARTICLE Jumping mechanisms in dictyopharid planthoppers (Hemiptera, Dicytyopharidae) Malcolm Burrows* ABSTRACT legs in the same plane underneath the body. A catapult-like The jumping performance of four species of hemipterans belonging to mechanism is used in which the trochanteral depressor muscles the family Dictyopharidae, from Europe, South Africa and Australia, contract slowly, energy is stored and is then released suddenly were analysed from high-speed images. The body shape in all was (Burrows, 2006a; Burrows, 2007b; Burrows, 2009). Despite these characterised by an elongated and tapering head that gave a important common features, each group has particular streamlined appearance. The body size ranged from 6 to 9 mm in specialisations of its own that define its jumping abilities. These length and from 6 to 23 mg in mass. The hind legs were 80–90% of include differences in body shape, in the length of the hind legs body length and 30–50% longer than the front legs, except in one and in the anatomy of the coxae. species in which the front legs were particularly large so that all legs Most leafhoppers have hind legs that are two to three times longer were of similar length. Jumping was propelled by rapid and than the other legs and are 90% of the body length (Burrows, simultaneous depression of the trochantera of both hind legs, powered 2007b). By contrast, froghoppers and planthoppers have hind legs by large muscles in the thorax, and was accompanied by extension of that are only 40–50% longer than the other legs and approximately the tibiae.
    [Show full text]
  • Host Plants and Seasonal Presence of Dictyophara Europaea in the Vineyard Agro-Ecosystem
    Bulletin of Insectology 61 (1): 199-200, 2008 ISSN 1721-8861 Host plants and seasonal presence of Dictyophara europaea in the vineyard agro-ecosystem Federico LESSIO, Alberto ALMA Di.Va.P.R.A., Entomologia e Zoologia applicate all’Ambiente “C. Vidano”, Facoltà di Agraria, Università di Torino, Italy Abstract Seasonal presence and host plants of Dictyophara europaea (L.), a candidate vector of phytoplasmas to grapevine, were studied in Piedmont during 2006 in different vine growing regions. Sampling consisted in net sweeping on different candidate host plants, and captures of adults with yellow sticky traps placed on grapevine. D. europaea nymphs and adults were collected on many weeds, showing how this planthopper should be considered a poly- phagous species, although Amaranthus retroflexus L. and Urtica dioica L. seem to be its preferred hosts, and may also bear phy- toplasmas. Larvae of Dryinidae were observed on almost 5% of collected individuals. The peak of adult presence was recorded in the middle of August, but few adults were captured on sticky traps placed on grapevine. Molecular analyses will be performed to detect the presence of phytoplasmas in captured individuals; however, given its scarce presence on grapevine, D. europaea does not seem capable to play a major role in the transmission of phytoplasmas to grapevine even if its vector ability were proved. Key words: Dictyophara europaea, vector, sweep net, Amaranthus retroflexus, grapevine. Introduction Holzinger et al. (2003). During 2007, collected nymphs and adults were put into a rearing cage made of plexi- The genus Dictyophara Germar is represented in Italy glas and insect-proof mesh, with a single plant of Ama- with four species: Dictyophara cyrnea Spinola (only in ranthus retroflexus L., to observe feeding behaviour and Sardinia), Dictyophara pannonica (Germar) (doubtful), ovoposition.
    [Show full text]
  • Dictyophara Europaea: Un Vecteur Potentiel De La Flavescence Dorée En Suisse?
    Protection des végétaux Dictyophara europaea: un vecteur potentiel de la flavescence dorée en Suisse? Christian LINDER1, Matteo CAVADINI2 et Santiago SCHAERER1 1Agroscope, 1260 Nyon 2ChanGins | Haute école spécialisée de viticulture et œnologie, 1260 Nyon Renseignements: Christian Linder, e-mail: [email protected], tél. +41 22 363 43 89, www.agroscope.ch Adulte du fulgore d’Europe Dictyophara europaea, hôte potentiel du phytoplasme de la flavescence dorée de la vigne. Introduction lidae), inféodée à la vigne (Belli et al. 2010). Cependant, de récentes observations ont montré que le fulgore La flavescence dorée (FD) est une importante maladie d’Europe, Dictyophara europaea L. (Homoptera: Dic- à phytoplasmes de la vigne causée par divers isolats tyopharidae), pouvait également abriter des isolats du appartenant au sous-groupes 16SrV-C ou -D (Filippin phytoplasme de la FD-C et ainsi éventuellement trans- et al. 2009). Les isolats de FD-D sont les plus répandus mettre ce type de FD dans les vignobles (Filippin et al. en Europe, tandis que ceux de FD-C n’affectent que des 2009). Ce fulgore univoltin de 9 à 13 mm est actif de régions limitées de France, d’Italie et des Balkans. Il est juin à octobre. Après l’éclosion de l’œuf, l’insecte passe admis que la FD est transmise par un vecteur unique, la par cinq stades nymphaux avec un pic d’activité des cicadelle Scaphoideus titanus Ball (Homoptera: Cicadel- adultes en août (Lessio et Alma 2008). De couleur verte, 216 Revue suisse Viticulture, Arboriculture, Horticulture | Vol. 46 (4): 216–219, 2014 Dictyophara europaea: un vecteur potentiel de la flavescence dorée en Suisse? | Protection des végétaux ou plus rarement rose, l’insecte se reconnaît aisément Le fulgore d’Europe, Dictyophara europaea, à la forme allongée de sa tête, qui peut constituer envi- est considéré depuis peu comme susceptible ron un cinquième du corps.
    [Show full text]
  • Identification and Ecology of Alternative Insect Vectors Of
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE www.nature.com/scientificreportsprovided by AIR Universita degli studi di Milano OPEN Identifcation and ecology of alternative insect vectors of ‘Candidatus Phytoplasma solani’ to grapevine Fabio Quaglino1, Francesco Sanna2, Abdelhameed Moussa 1, Monica Faccincani3, Alessandro Passera1, Paola Casati1, Piero Attilio Bianco1 & Nicola Mori 2* Bois noir, a disease of the grapevine yellows complex, is associated with ‘Candidatus Phytoplasma solani’ and transmitted to grapevines in open felds by the cixiids Hyalesthes obsoletus and Reptalus panzeri. In vine-growing areas where the population density of these vectors is low within the vineyard, the occurrence of bois noir implies the existence of alternative vectors. The aim of this study was to identify alternative vectors through screening of the Auchenorrhyncha community, phytoplasma typing by stamp gene sequence analyses, and transmission trials. During feld activities, conducted in Northern Italy in a vineyard where the bois noir incidence was extremely high, nine potential alternative insect vectors were identifed according to high abundance in the vineyard agro-ecosystem, high infection rate, and harbouring phytoplasma strains characterized by stamp gene sequence variants found also in symptomatic grapevines. Transmission trials coupled with molecular analyses showed that at least eight species (Aphrodes makarovi, Dicranotropis hamata, Dictyophara europaea, Euscelis incisus, Euscelidius variegatus, Laodelphax striatella, Philaenus spumarius, and Psammotettix alienus/confnis) are alternative vectors of ‘Candidatus Phytoplasma solani’ to grapevines. These novel fndings highlight that bois noir epidemiology in vineyard agro-ecosystems is more complex than previously known, opening up new perspectives in the disease management. Bois noir (BN), a disease of the grapevine yellows (GY) complex, causes serious crop losses in wine-making grape varieties in the Euro-Mediterranean area and in other vine-growing countries.
    [Show full text]
  • Florida Native Blackberries Me
    The Nature Coastline Newsletter of the Nature Coast Chapter of the Florida Native Plant Society A Message from the President A little bit of Nature eases stress in our everyday life! We all have stress in our lives from not those gardens with stones, ce- one thing or another. We also all ment and alien plants that do not love native plants and know that encourage nature. Even if you our environment is very important spend only a short time outside MARCH-APRIL to us and the future. How can we enjoying your environment and 2020 handle our everyday lives and still breathing the fresh air, you can In this issue: have time to follow the mission of relieve stress. So, the moral of this Meetings/Programs the Florida Native Plant Society of story is that if we plant natives and by Pat Kelly preserving, conserving and restor- encourage wildlife into our back- ing native plants and native plant yards we are also healing our- Calendar communities of Florida? I found selves. In the Spotlight several ways to do this and I hope Thank you for being members of David Barnard you might have your own methods. the Nature Coast Chapter of the One way I found to cope with the Florida Native Plant Society. stress of life and still follow the Lessons from the Landscape by Julie Wert mission is to sit in the backyard with a cup of coffee or a glass of Jonnie Spitler, President Plant Profile: wine! and just enjoy nature around Florida Native Blackberries me.
    [Show full text]
  • Plant Collecting Expedition for Berry Crop Species Through Southeastern
    Plant Collecting Expedition for Berry Crop Species through Southeastern and Midwestern United States June and July 2007 Glassy Mountain, South Carolina Participants: Kim E. Hummer, Research Leader, Curator, USDA ARS NCGR 33447 Peoria Road, Corvallis, Oregon 97333-2521 phone 541.738.4201 [email protected] Chad E. Finn, Research Geneticist, USDA ARS HCRL, 3420 NW Orchard Ave., Corvallis, Oregon 97330 phone 541.738.4037 [email protected] Michael Dossett Graduate Student, Oregon State University, Department of Horticulture, Corvallis, OR 97330 phone 541.738.4038 [email protected] Plant Collecting Expedition for Berry Crops through the Southeastern and Midwestern United States, June and July 2007 Table of Contents Table of Contents.................................................................................................................... 2 Acknowledgements:................................................................................................................ 3 Executive Summary................................................................................................................ 4 Part I – Southeastern United States ...................................................................................... 5 Summary.............................................................................................................................. 5 Travelog May-June 2007.................................................................................................... 6 Conclusions for part 1 .....................................................................................................
    [Show full text]
  • Hemiptera, Fulgoromorpha, Dictyopharidae), with Descriptions of Two New Species
    Zoosyst. Evol. 94 (2) 2018, 369–391 | DOI 10.3897/zse.94.26895 Taxonomic review of the planthopper genus Orthopagus (Hemiptera, Fulgoromorpha, Dictyopharidae), with descriptions of two new species Zhi-Shun Song1,2, Igor Malenovský3, Jian-Qin Chen1, Jürgen Deckert4, Ai-Ping Liang5,6 1 Jiangsu Key Laboratory of Biofunctional Molecules, School of Life Sciences, Chemistry & Chemical Engineering, Jiangsu Second Normal University, Nanjing 210013, China 2 Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar 3 Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic 4 Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity Science, Invalidenstraße 43, Berlin 10115, Germany 5 Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China 6 College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China http://zoobank.org/C354D7DF-198F-4D4F-A2A8-F763FD03018D Corresponding authors: Igor Malenovský ([email protected]); Ai-Ping Liang ([email protected]) Abstract Received 25 May 2018 The Oriental and eastern Palaearctic planthopper genus Orthopagus Uhler, 1897 (He- Accepted 16 July 2018 miptera, Fulgoromorpha, Dictyopharidae, Dictyopharinae, Orthopagini) is revised. Six Published 6 August 2018 species are included: O. bartletti Song, Malenovský & Deckert, sp. n. (described from India), O. exoletus (Melichar, 1903), comb. n., stat. rev. (material studied from India and Academic editor: Sri Lanka), O. hainanensis Song, Chen & Liang, sp. n. (described from China: Hainan Martin Husemann island), O. lunulifer Uhler, 1897 (the type species of the genus; confirmed from Japan, China, Vietnam, Laos, India, and Nepal), O.
    [Show full text]
  • Diversity and Abundance of Insect Herbivores Foraging on Seedlings in a Rainforest in Guyana
    R Ecological Entomology (1999) 24, 245±259 Diversity and abundance of insect herbivores foraging on seedlings in a rainforest in Guyana YVES BASSET CABI Bioscience: Environment, Ascot, U.K. Abstract. 1. Free-living insect herbivores foraging on 10 000 tagged seedlings representing ®ve species of common rainforest trees were surveyed monthly for more than 1 year in an unlogged forest plot of 1 km2 in Guyana. 2. Overall, 9056 insect specimens were collected. Most were sap-sucking insects, which represented at least 244 species belonging to 25 families. Leaf-chewing insects included at least 101 species belonging to 16 families. Herbivore densities were among the lowest densities reported in tropical rainforests to date: 2.4 individuals per square metre of foliage. 3. Insect host speci®city was assessed by calculating Lloyd's index of patchiness from distributional records and considering feeding records in captivity and in situ. Generalists represented 84 and 78% of sap-sucking species and individuals, and 75 and 42% of leaf-chewing species and individuals. In particular, several species of polyphagous xylem-feeding Cicadellinae were strikingly abundant on all hosts. 4. The high incidence of generalist insects suggests that the Janzen±Connell model, explaining rates of attack on seedlings as a density-dependent process resulting from contagion of specialist insects from parent trees, is unlikely to be valid in this study system. 5. Given the rarity of ¯ushing events for the seedlings during the study period, the low insect densities, and the high proportion of generalists, the data also suggest that seedlings may represent a poor resource for free-living insect herbivores in rainforests.
    [Show full text]
  • Review of the Biogeography of the Genus Artemia (Crustacea
    Journal o f Biogeography ( 1998) 25,213-226 Review of the biogeography of the genusArtemia (Crustacea, Anostraca) G eo rg e V. Triantaphyllidis*!, Theodore J. A b a tz o p o u lo sJ and P a tr ic k Sorgeloos* * Laboratory of Aquaculture Artemia& Reference Center, University o f Ghent, Rosier 44, B-9000 Ghent, Belgium J Faculty and o f Sciences, School o f Biology, Department o f Genetics, Development and Molecular Biology, Aristotle University o f Thessaloniki, GR-540 06 Thessaloniki, Greece A bstract. In this study, we report on the known Artem ia populations are discussed. In view of the great importance habitats worldwide. Recent literature information is o f Artem ia as part of the live food chain for the culture of incorporated about the taxonomic status of the various fish and shellfish larvae and the present cyst shortage from populations studied. The genus is composed of di-, tri-, the market, the need for commercial exploitation and tetra- and pentaploid parthenogenetic populations and of development of new Artem ia sources is now, more than the following bisexual species: A. franciscana franciscana, ever, necessary. A. franciscana monica, A. franciscana sp., A. persimilis, A. salina, A. urmiana, A. sinica and A. sp. from Kazakhstan. The problems of characterizing new brine shrimp Key words. Artem ia, biogeography, brine shrimp. Resum en. En este estudio presentamos Ios diferentes relacionados con la caracterización de nuevas poblaciones. habitats de A rtem ia en todo el mundo. Se incluye En vista de la gran importancia que tiene Artem ia, como información literaria reciente sobre la posición taxonómica parte de la cadena alimenticia en el cultivo larvario de peces de las distintas poblaciones estudiadas.
    [Show full text]
  • A Comparison of the External Morphology and Functions of Labial Tip Sensilla in Semiaquatic Bugs (Hemiptera: Heteroptera: Gerromorpha)
    Eur. J. Entomol. 111(2): 275–297, 2014 doi: 10.14411/eje.2014.033 ISSN 1210-5759 (print), 1802-8829 (online) A comparison of the external morphology and functions of labial tip sensilla in semiaquatic bugs (Hemiptera: Heteroptera: Gerromorpha) 1 2 JOLANTA BROŻeK and HERBERT ZeTTeL 1 Department of Zoology, Faculty of Biology and environmental Protection, University of Silesia, Bankowa 9, PL 40-007 Katowice, Poland; e-mail: [email protected] 2 Natural History Museum, entomological Department, Burgring 7, 1010 Vienna, Austria; e-mail: [email protected] Key words. Heteroptera, Gerromorpha, labial tip sensilla, pattern, morphology, function, apomorphic characters Abstract. The present study provides new data on the morphology and distribution of the labial tip sensilla of 41 species of 20 gerro- morphan (sub)families (Heteroptera: Gerromorpha) obtained using a scanning electron microscope. There are eleven morphologically distinct types of sensilla on the tip of the labium: four types of basiconic uniporous sensilla, two types of plate sensilla, one type of peg uniporous sensilla, peg-in-pit sensilla, dome-shaped sensilla, placoid multiporous sensilla and elongated placoid multiporous sub- apical sensilla. Based on their external structure, it is likely that these sensilla are thermo-hygrosensitive, chemosensitive and mechano- chemosensitive. There are three different designs of sensilla in the Gerromorpha: the basic design occurs in Mesoveliidae and Hebridae; the intermediate one is typical of Hydrometridae and Hermatobatidae, and the most specialized design in Macroveliidae, Veliidae and Gerridae. No new synapomorphies for Gerromorpha were identified in terms of the labial tip sensilla, multi-peg structures and shape of the labial tip, but eleven new diagnostic characters are recorded for clades currently recognized in this infraorder.
    [Show full text]
  • Waiian Sugar Planters' Association in September, 1905. This Koebele
    141 FREDERICK A. G. MUIR Biographical Sketch The Work of Dr. Frederick A. G. Muir in the Biological Control of Sugar Cane Insects in Hawaii BY O. H. SWEZKY AND £. X. WILLIAMS (Presented at the meeting of June 4, 1931) With the death of Dr. Muir in England on May 13, 1931, ended the career of a man who had devoted his best years to the field of biological control as a method of controlling insect pests. Dr. Muir began this work for the Experiment Station of the Ha waiian Sugar Planters' Association in September, 1905. This was when the sugar cane leafhopper (Perkinsiella saccharicida Kirk.) was still a serious pest in Hawaii. It was also shortly after the introduction of the leafhopper egg-parasites* by Albert Koebele and Dr. R. C. L. Perkins, from Australia and Fiji. These parasites had not yet shown their ability to cope with the enormous numbers of their host. Mr. Koebele had been working for more than ten years on the introduction of beneficial insects into Hawaii and, being in failing health, wished to retire from active foreign work in the tropics. On his return from Fiji he spent but a short time in Honolulu in the summer of 1905, before leaving for California. Mr. Koebele never came to Honolulu again. To carry on the work in which Mr. Koebele had been so suc cessful since his arrival in Hawaii in 1893, Dr. Muir was engaged, and his services on the staff of the Experiment Station, H.S.P.A., commenced September 1, 1905.
    [Show full text]