DOCSLIB.ORG

Preliminary Study of Three Subfamilies of the Family Platygasteridae (Hymenoptera) in East-Azarbaijan Province

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Preliminary Study of Three Subfamilies of the Family Platygasteridae (Hymenoptera) in East-Azarbaijan Province Archive of SID nd Proceedings of 22 Iranian Plant Protection Congress, 27-30 August 2016 412 College of Agriculture and Natural Resources, University of Tehran, Karaj, IRAN Preliminary study of three subfamilies of the family Platygasteridae (Hymenoptera) in East-Azarbaijan province Hossein Lotfalizadeh1, Mortaza Shamsi2 and Shahzad Iranipour3 1.Department of Plant Protection, Agricultural and Natural Resources Research Center of East- Azarbaijan, Tabriz, Iran 2.Department of Plant Protection, Islamic Azad University, Tabriz Branch, Tabriz, Iran. 3. Department of Plant Protection, University of Tabriz. [email protected] The subfamilies Scelioninae, Telenominae and Teleasinae that were known formerly as Scelionidae are widely distributed in the world. These are parasitic wasps and have important role in the agricultural pests control. These minute wasps are egg parasitoids of spiders and different insect orders. During 2013-2014, a faunistic study was conducted in some parts of East-Azarbaijan province. Collection were made by Malaise trap, pan trap and sweeping net. Identifications were made by available literatures. Morphological characters of head, antennae, thorax, wings, gaster and legs were used for identification. Based on the present study as the first faunistic study of these subfamilies in Iran, 244 specimens were studied. These belong to 10 genera, 21 species. Of which, 11 species and 6 genera, 2 species and 2 genera and 8 species and 2 genera are respectively belong to Scelioninae, Teleasinae and Telenominae. Twenty-one species include 10 genera and three subfamilies were collected and identified. Twenty species and six genera are new records for Iranian fauna. These six genera are Baeus, Baryconus, Calliscelio, Idris, Scelio and Proteleas. The specimens were deposited in the insect collection of the Department of Plant Protection, East-Azarbaijan Research Center for Agriculture and Natural Resources, Tabriz, Iran. Identified species are as follow: Baeus seminulum Haliday, 1833* Proteleas rugosus (Kozlov, 1961)* Baryconus europaeus (Kieffer, 1908)* Teleas rugosus (Kieffer, 1908)* Calliscelio ruficollis Szeleyi, 1941* Telenomus angustatus Thomson, 1861* Gryon muscaeformis Nees, 1818* Telenomus harpyiae Mayr, 1879* Gryon solutus (Kononova and Petrov, 2001)* Telenomus hofmanni Mayr, 1879* Idris aureonitens Szabo, 1965* Telenomus pentophera Mayr, 1879 Idris clypealis (Huggert,1979)* Telenomus punctatissimus Ratzeburg, 1844 Idris desertorum (Priesner, 1951)* Trissolcus cantus (Kozlov & Le, 1977) Idris diversus Wollaston, 1858* Trissolcus cephalotes (Kozlov & Le, 1977) Idris rufescens (Kieffer, 1908)* Trissolcus rufiventris (Mayr, 1907) Scelio rugosulus (Latreille, 1805)* Two genera Telenomus and Idris are the most specious in this region. Including results of this study fauna of the subfamilies Scelioninae, Teleasinae and Telenominae are 16 species and 7 genera, 2 species and 2 genera and 33 species and 3 genera, respectively (totally 12 genera and 51 species). It seems that Gryon muscaeformis and Telenomus harpyiae were the most abundant in the studied area. On the other hand, the most abundant specimens were collected during July that can affected by environmental condition and host abundant. Keywords: Platygastridae, Insect, Wasps, East-Azarbaijan, Fauna. www.SID.ir .
Load more

Recommended publications
  • Assessing the Distribution of Exotic Egg Parasitoids of Halyomorpha Halys in Europe with a Large-Scale Monitoring Program
    insects Article Assessing the Distribution of Exotic Egg Parasitoids of Halyomorpha halys in Europe with a Large-Scale Monitoring Program Livia Zapponi 1 , Francesco Tortorici 2 , Gianfranco Anfora 1,3 , Simone Bardella 4, Massimo Bariselli 5, Luca Benvenuto 6, Iris Bernardinelli 6, Alda Butturini 5, Stefano Caruso 7, Ruggero Colla 8, Elena Costi 9, Paolo Culatti 10, Emanuele Di Bella 9, Martina Falagiarda 11, Lucrezia Giovannini 12, Tim Haye 13 , Lara Maistrello 9 , Giorgio Malossini 6, Cristina Marazzi 14, Leonardo Marianelli 12 , Alberto Mele 15 , Lorenza Michelon 16, Silvia Teresa Moraglio 2 , Alberto Pozzebon 15 , Michele Preti 17 , Martino Salvetti 18, Davide Scaccini 15 , Silvia Schmidt 11, David Szalatnay 19, Pio Federico Roversi 12 , Luciana Tavella 2, Maria Grazia Tommasini 20, Giacomo Vaccari 7, Pietro Zandigiacomo 21 and Giuseppino Sabbatini-Peverieri 12,* 1 Centro Ricerca e Innovazione, Fondazione Edmund Mach (FEM), Via Mach 1, 38098 S. Michele all’Adige, TN, Italy; [email protected] (L.Z.); [email protected] (G.A.) 2 Dipartimento di Scienze Agrarie, Forestali e Alimentari, University di Torino (UniTO), Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy; [email protected] (F.T.); [email protected] (S.T.M.); [email protected] (L.T.) 3 Centro Agricoltura Alimenti Ambiente (C3A), Università di Trento, Via Mach 1, 38098 S. Michele all’Adige, TN, Italy 4 Fondazione per la Ricerca l’Innovazione e lo Sviluppo Tecnologico dell’Agricoltura Piemontese (AGRION), Via Falicetto 24, 12100 Manta, CN,
    [Show full text]
  • A Short History Regarding the Taxonomy and Systematic Researches of Platygastroidea (Hymenoptera)
    Memoirs of the Scientific Sections of the Romanian Academy Tome XXXIV, 2011 BIOLOGY A SHORT HISTORY REGARDING THE TAXONOMY AND SYSTEMATIC RESEARCHES OF PLATYGASTROIDEA (HYMENOPTERA) O.A. POPOVICI1 and P.N. BUHL2 1 “Al.I.Cuza” University, Faculty of Biology, Bd. Carol I, nr. 11, 700506, Iasi, Romania. 2 Troldhøjvej 3, DK-3310 Ølsted, Denmark, e-mail: [email protected],dk Corresponding author: [email protected] This paper presents an overview of the most important and best-known works that were the subject of taxonomy or systematics Platygastroidea superfamily. The paper is divided into three parts. In the first part of the research surprised the early period can be placed throughout the XIXth century between Latreille and Dalla Torre. Before this period, references about platygastrids and scelionids were made by Linnaeus and Schrank, they are the ones who described the first platygastrid and scelionid respectively. In this the first period work entomologists as: Haliday, Westwood, Walker, Forster, Ashmead, Thomson, Howard, etc., the result of their work being the description of 699 scelionids species which are found quoted in Dalla Torre's catalogue. The second part of the paper is devoted to early 20th century. This vibrant work is marked by the work of two great entomologists: Kieffer and Dodd. In this period one publish the first and only global monograph of platygastrids and scelionids until now. In this monograph are twice the number of species than in Dalla Torre's catalogue which shows the magnitude of the systematic research of those moments. The third part of the paper refers to the late 20th and early 21st century.
    [Show full text]
  • Advances in Taxonomy and Systematics of Platygastroidea (Hymenoptera)
    Advances in Taxonomy and Systematics of Platygastroidea (Hymenoptera) Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of the Ohio State University By Charuwat Taekul, M.S. Graduate Program in Evolution, Ecology, and Organismal Biology ***** The Ohio State University 2012 Dissertation Committee: Dr. Norman F. Johnson, Advisor Dr. Johannes S. H. Klompen Dr. John V. Freudenstein Dr. Marymegan Daly Copyright by Charuwat Taekul 2012 ABSTRACT Wasps, Ants, Bees, and Sawflies one of the most familiar and important insects, are scientifically categorized in the order Hymenoptera. Parasitoid Hymenoptera display some of the most advanced biology of the order. Platygastroidea, one of the significant groups of parasitoid wasps, attacks host eggs more than 7 insect orders. Despite its success and importance, an understanding of this group is still unclear. I present here the world systematic revisions of two genera in Platygastroidea: Platyscelio Kieffer and Oxyteleia Kieffer, as well as introduce the first comprehensive molecular study of the most important subfamily in platygastroids as biological control benefit, Telenominae. For the systematic study of two Old World genera, I address the taxonomic history of the genus, identification key to species, as well as review the existing concepts and propose descriptive new species. Four new species of Platyscelio are discovered from South Africa, Western Australia, Botswana and Zimbabwe. Four species are considered to be junior synonyms of P. pulchricornis. Fron nine valid species of Oxyteleia, the new species are discovered throughout Indo-Malayan and Australasian regions in total of twenty-seven species. The genus Merriwa Dodd, 1920 is considered to be a new synonym.
    [Show full text]
  • Preempting the Arrival of the Brown Marmorated Stink Bug, Halyomorpha Halys: Biological Control Options for Australia
    insects Article Preempting the Arrival of the Brown Marmorated Stink Bug, Halyomorpha halys: Biological Control Options for Australia Valerie Caron 1,* , Tania Yonow 1, Cate Paull 2, Elijah J. Talamas 3, Gonzalo A. Avila 4 and Kim A. Hoelmer 5 1 CSIRO, Health and Biosecurity, Black Mountain, Acton, ACT 2601, Australia; [email protected] 2 CSIRO, Agriculture and Food, Dutton Park, QLD 4102, Australia; [email protected] 3 Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Bureau of Entomology, Nematology and Plant Pathology, Gainesville, FL 32608, USA; [email protected] 4 The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand; [email protected] 5 USDA, Agriculture Research Service, Beneficial Insects Introduction Research Unit, Newark, DE 19713, USA; [email protected] * Correspondence: [email protected]; Tel.: +61-02-6218-3475 Simple Summary: The brown marmorated stink bug Halyomorpha halys (Stål) (Hemiptera: Pentato- midae) is native to Northeast Asia, but has become a serious invasive species in North America and Europe, causing major economic damage to crops. Halyomorpha halys has not established itself in Australia, but it has been intercepted several times at the border, therefore future incursions and establishment are likely. There are few control options for this species and biological control may be a useful management method in Australia. This study summarizes the literature on natural enemies of H. halys in its native and invaded ranges and prioritizes potential biological control agents that could be suitable for use in Australia. The results show two egg parasitoid species as the Citation: Caron, V.; Yonow, T.; Paull, best candidates: Trissolcus japonicus (Ashmead) and Trissolcus mitsukurii (Ashmead) (Hymenoptera: C.; Talamas, E.J.; Avila, G.A.; Hoelmer, Scelionidae).
    [Show full text]
  • Associations with Forest Composition and Post-Fire Succession
    Predatory Hymenopteran assemblages in boreal Alaska: associations with forest composition and post-fire succession Item Type Thesis Authors Wenninger, Alexandria Download date 07/10/2021 19:06:57 Link to Item http://hdl.handle.net/11122/8749 PREDATORY HYMENOPTERAN ASSEMBLAGES IN BOREAL ALASKA: ASSOCIATIONS WITH FOREST COMPOSITION AND POST-FIRE SUCCESSION By Alexandria Wenninger, B.S. A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science in Biological Sciences University of Alaska Fairbanks MAY 2018 APPROVED: Diane Wagner, Committee Chair Teresa Hollingsworth, Committee Member Derek Sikes, Committee Member Kris Hundertmark, Chair Department of Biology and Wildlife Anupma Prakash, Interim Dean College of Natural Science and Mathematics Michael Castellini, Dean of the Graduate School Abstract Predatory Hymenoptera play key roles in terrestrial foodwebs and affect ecosystem processes, but their assemblage composition and distribution among forest habitats are poorly understood. Historically, the boreal forest of interior Alaska has been characterized by a fire disturbance regime that maintains vegetation composition dominated by black spruce forest. Climate-driven changes in the boreal fire regime have begun to increase the occurrence of hardwood species in the boreal forest, including trembling aspen and Alaska paper birch. Replacement of black spruce forests with aspen forests may influence predatory hymenopteran assemblages due to differences in prey availability and extrafloral nectar provisioning. Furthermore, changes in the frequency and extent of boreal forest fires increase the proportion of forests in earlier successional stages, altering habitat structure. The primary goal of this study was to characterize predatory hymenopteran assemblages in post-fire boreal forests of interior Alaska.
    [Show full text]
  • Rajmohana Checklist of Scelionidae of India 1570 FINAL
    CHECKLIST ZOOS' PRINT JOURNAL 21(12): 2506-2613 distributional records is presented in this paper. A CHECKLIST OF THE SCELIONIDAE The present checklist deals with 198 species under 43 genera in (HYMENOPTERA: PLATYGASTROIDEA) OF three subfamilies of the Scelionidae (34 genera in the Scelioninae, 3 and 6 genera in the Teleasinae and the Telenominae INDIA respectively). Only one genus, Mudigere Johnson is found to be endemic to India. More intensive and extensive surveys of K. Rajmohana the land are sure to yield further vital bioecological data on our indigenous egg-parasitoids that can provide new insights in Zoological Survey of India, Western Ghats Field Research Station, utilizing these living resources more meaningfully in the Calicut, Kerala 673002, India biocontrol scenario of our agricultural sector. Email: [email protected] REFERENCES The Hymenoptera is one of the most species rich orders, with Ashmead, W.H. (1887). Studies on the North American Proctotrupidae, with about 10% of all known species of the terrestrial biota, of which descriptions of new species from Florida. Entomologica Americana 3: 73-76, 80% are parasitic placed under 10 superfamilies (Masner, 1993). 97-100, 117-119. Ashmead, W.H. (1893). A monograph on the North American Proctotrypidae. The Platygastroidea which includes two families viz., the Bulletin of the U.S. National Museum 45: 472pp. Scelionidae and the Platygastridae, is the third largest of the Ashmead, W.H. (1904). A list of hymenoptera of the Philippine Islands, with parasitic superfamilies, with about 4460 described species descriptions of new species. Journal of the New York Entomological Society 12: worldwide. They are found virtually in all habitats except the 1-22.
    [Show full text]
  • Phylogenetic Relationships of the Telenomine Genus Nzrupama (Hymenoptera: Scelionidae)
    - - - - --- International Journal of Entomology Vol. 97, no. 4: 369-374 SO December 1985 Q 1985 by the Blshop Museum PHYLOGENETIC RELATIONSHIPS OF THE TELENOMINE GENUS NZRUPAMA (HYMENOPTERA: SCELIONIDAE) Norman F. Johnson1 Abstract. The Afrotropical genus Nirupama is most closely related to the genus Archiphanurus. Nirupama, Archiphanurus, and the genus Psix form a monophyletic group within the subfamily Telenominae sensu stricto. Kozlov (1970) and Kozlov & Kononova (1983) recognized 3 tribes in the subfamily Telenominae (Hymenoptera: Scelionidae): Tiphodytini, Aradophagini, and Tele- nomini. In their concept the subfamily is defined only by the possession of wide laterotergites on the metasoma, a character also found in some Scelioninae and other families of Proctotrupoidea, e.g., Diapriidae and Platygastridae. Masner (1 972, 1976, 1980) transferred the Aradophagini and Tiphodytini to the subfamily Scelioninae. The Telenominae sensu stricto was then defined by Masner as having the combination of (1) wide laterotergites with (2) the loss of laterosternites in the metasoma; (3) 7 terga and 7 sterna in the female metasoma, 8 terga and 8 sterna in the male; (4) 7th sternum in the female and 8th in the male reduced to U-shaped sclerites and invag- inated into the metasoma; and (5) sexually heteromerous antennae, with male an- tennae 12-merous (with 1 known exception) and female antennae usually 1 1-merous, sometimes 10-merous. I follow Masner's concept of the subfamily here, i.e., including only the nominal tribe. However, a sister-group analysis of the entire family Scelion- idae at the tribal level is needed to resolve the question of whether Aradophagini and Tiphodytini should be included in the Telenominae.
    [Show full text]
  • 8 March 2013, 381 P
    See discussions, stats, and author profiles for this publication at: http://www.researchgate.net/publication/273257107 Mason, P. G., D. R. Gillespie & C. Vincent (Eds.) 2013. Proceedings of the Fourth International Symposium on Biological Control of Arthropods. Pucón, Chile, 4-8 March 2013, 381 p. CONFERENCE PAPER · MARCH 2013 DOWNLOADS VIEWS 626 123 3 AUTHORS, INCLUDING: Peter Mason Charles Vincent Agriculture and Agri-Food Canada Agriculture and Agri-Food Canada 96 PUBLICATIONS 738 CITATIONS 239 PUBLICATIONS 1,902 CITATIONS SEE PROFILE SEE PROFILE Available from: Charles Vincent Retrieved on: 13 August 2015 The correct citation of this work is: Peter G. Mason, David R. Gillespie and Charles Vincent (Eds.). 2013. Proceedings of the 4th International Symposium on Biological Control of Arthropods. Pucón, Chile, 4-8 March 2013, 380 p. Proceedings of the 4th INTERNATIONAL SYMPOSIUM ON BIOLOGICAL CONTROL OF ARTHROPODS Pucón, Chile March 4-8, 2013 Peter G. Mason, David R. Gillespie and Charles Vincent (Eds.) 4th INTERNATIONAL SYMPOSIUM ON BIOLOGICAL CONTROL OF ARTHROPODS Pucón, Chile, March 4-8, 2013 PREFACE The Fourth International Symposium on Biological Control of Arthropods, held in Pucón – Chile, continues the series of international symposia on the biological control of arthropods organized every four years. The first meeting was in Hawaii – USA during January 2002, followed by the Davos - Switzerland meeting during September 2005, and the Christchurch – New Zealand meeting during February 2009. The goal of these symposia is to create a forum where biological control researchers and practitioners can meet and exchange information, to promote discussions of up to date issues affecting biological control, particularly pertaining to the use of parasitoids and predators as biological control agents.
    [Show full text]
  • (E)-2-Hexenal Efficacy for Behavioral Manipulation of Egg Parasitoids In
    BioControl (2014) 59:525–537 DOI 10.1007/s10526-014-9592-9 Field evaluation of (E)-2-hexenal efficacy for behavioral manipulation of egg parasitoids in soybean Cecı´lia Rodrigues Vieira • Maria Carolina Blassioli -Moraes • Miguel Borges • Carmen Silvia Soares Pires • Edison Ryoiti Sujii • Rau´l Alberto Laumann Received: 29 January 2014 / Accepted: 9 June 2014 / Published online: 1 July 2014 Ó International Organization for Biological Control (IOBC) 2014 Abstract We studied the influence of synthetic (E)- Trissolcus spp. (Hymenoptera: Platygastridae: Tele- 2-hexenal on the abundance of Telenominae aiming to nominae) in treated areas, associated with greater attract parasitoids and enhance stink bug egg parasit- intensity of parasitism. In long-term experiments, ism in treated areas. We conducted experiments in treatment with (E)-2-hexenal did not influence the 2006, 2007 and 2008 soybean seasons with two short- abundance of Telenominae or parasitism levels, but term (one week) and one long-term (seven weeks) increased egg predation. Applications of (E)-2-hexe- experiment, respectively. We evaluated the abundance nal can be used to increase recruitment of Trissolcus of parasitoids with yellow sticky traps and estimated spp. in the early flowering stages of soybean and also the incidence and intensity of parasitism with sentinel to attract other natural enemies, but do not increase eggs of Euschistus heros Fabricius (Hemiptera: Pent- egg parasitism. atomidae) or with tulle bags, enclosing laboratory pregnant E. heros as an egg source. In short-term Keywords Pentatomidae Á Telenominae Á Green leaf experiments, there was increased abundance of volatile Á Herbivore-induced plant volatile Á Natural enemy Handling Editor: Stefano Colazza Introduction C.
    [Show full text]
  • 1 the RESTRUCTURING of ARTHROPOD TROPHIC RELATIONSHIPS in RESPONSE to PLANT INVASION by Adam B. Mitchell a Dissertation Submitt
    THE RESTRUCTURING OF ARTHROPOD TROPHIC RELATIONSHIPS IN RESPONSE TO PLANT INVASION by Adam B. Mitchell 1 A dissertation submitted to the Faculty of the University of Delaware in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Entomology and Wildlife Ecology Winter 2019 © Adam B. Mitchell All Rights Reserved THE RESTRUCTURING OF ARTHROPOD TROPHIC RELATIONSHIPS IN RESPONSE TO PLANT INVASION by Adam B. Mitchell Approved: ______________________________________________________ Jacob L. Bowman, Ph.D. Chair of the Department of Entomology and Wildlife Ecology Approved: ______________________________________________________ Mark W. Rieger, Ph.D. Dean of the College of Agriculture and Natural Resources Approved: ______________________________________________________ Douglas J. Doren, Ph.D. Interim Vice Provost for Graduate and Professional Education I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy. Signed: ______________________________________________________ Douglas W. Tallamy, Ph.D. Professor in charge of dissertation I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy. Signed: ______________________________________________________ Charles R. Bartlett, Ph.D. Member of dissertation committee I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy. Signed: ______________________________________________________ Jeffery J. Buler, Ph.D. Member of dissertation committee I certify that I have read this dissertation and that in my opinion it meets the academic and professional standard required by the University as a dissertation for the degree of Doctor of Philosophy.
    [Show full text]
  • Gahan) [Hym.: Scelionidae], an Egg Parasitoid of Sesamia Calamistis Hampson (Lep.: Noctuidae
    BIOLOGICAL CONTROL 8, 15–21 (1997) ARTICLE NO. BC960478 Factors Influencing the Developmental Rates and Reproductive Potentials of Telenomus busseolae (Gahan) [Hym.: Scelionidae], an Egg Parasitoid of Sesamia calamistis Hampson (Lep.: Noctuidae) A. CHABI OLAYE,* F. SCHULTHESS,* T. G. SHANOWER,† AND N. A. BOSQUE-PE´ REZ‡ *Plant Health Management Division (PHMD), International Institute of Tropical Agriculture (IITA), Biological Control Center of Africa, BP 08-0932 Cotonou, Republic of Benin; †International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru P.O., Andhra Pradesh, 502 324, India; and ‡PHMD, International Institute of Tropical Agriculture (IITA), PMB 5320 Ibadan, Nigeria Received September 25, 1995; accepted July 18, 1996 (Bosque-Pe´rez and Mareck, 1990; Shanower et al., The effect of seven constant temperatures on the 1991; Gounou et al., 1994). Damaging population levels development of Telenomus busseolae was determined, are usually reached on second season maize, between using Sesamia calamistis eggs as the host. The develop- September and November. In the Republic of Benin, S. mental threshold calculated was 13.7°C, the optimum calamistis is the most abundant borer species but temperature was 31°C, and the maximum temperature population densities usually are below injury level at which no parasitoid emergence occurred was 34°C. (Shanower et al., 1991), although multiple cropping Female T. busseolae began ovipositing immediately cycles of maize in southern Benin theoretically should after emergence. They produced more offspring dur- cause serious yield losses in late planted maize. The ing the first 24 h of adult life than during any subse- reasons for these generally low S.
    [Show full text]
  • Telenomus Podisi: One Species, Or More?
    Telenomus podisi: one species, or more? THESIS Presented in Partial Fulfillment of the Requirements for the Degree Master of Science in the Graduate School of The Ohio State University By Kelsey Rae Bowers Graduate Program in Evolution, Ecology and Organismal Biology The Ohio State University 2015 Master's Examination Committee: Dr. Norman F. Johnson, advisor Dr. Marymegan Daly Dr. John V. Freudenstein Copyright by Kelsey Rae Bowers 2015 Abstract Parasitoid wasps are a collection of hymenopterans whose larvae feed on the body of a host, eventually killing it (Godfray 1994). The parasitoid wasp Telenomus podisi Ashmead (Hymenoptera: Platygastridae, Telenominae) parasitizes the eggs of both phytophagous and predaceous pentatomids, including a number of important agricultural pests (e.g., Temerak and Whitcomb 1984, Schaefer and Panizzi 2000). Comparisons of strains from Maryland and Brazil has begun to raise questions as to whether T. podisi is a single species (Borges et al. 2003). This study considers populations of T. podisi throughout the species range to determine if there is evidence to support the hypothesis of T. podisi as more than one species. Cytochrome oxidase I is sequenced for 50 specimens of T. podisi from Saskatchewan, Ohio, Tennessee, Arkansas, Nebraska, Panama, Brazil and the Dominican Republic, along with one specimen each of Telenomus sechellensis Kieffer, Telenomus grenadensis Ashmead, and Trissolcus basalis Wollaston. A number of species delimitation methods are considered, including DNA barcoding with pairwise distances, the General Mixed Yule Coalescent Model (GMYC) and Poisson Tree Process Model (PTP) (Fujisawa and Barraclough 2013, Zhang et al. 2013). DNA barcoding attempts to detect the transition between interspecific and intraspecific variation by a gap in the distribution of genetic distances, and this gap is clear in the histogram of p- distances (Hebert et al., 2004).
    [Show full text]