Download or read book A Taxonomic Revision of Nearctic Conostigmus Hymenoptera Ceraphronoidea Megaspilidae written by author 1 and published by . This book was released on 2020 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Taxonomic Revision of Nearctic Endasys Foerster 1868 Hymenoptera Ichneumonidae Gelinae written by John C. Luhman and published by Univ of California Press. This book was released on 1990-11-20 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This paperback revision will be especially helpful to specialists working among the forest of ill-defined and undescribed Ichneumonidae (the most speciose insect family). Luhman adopts a particularly modern presentation: a model for future ichneumonid revisions with good discussions of character analysis and phylogeny supporting his detailed diagnoses and thorough morphological descriptions." Foster Purrington, Department of Entomology, Ohio State University, From Annuals of the Entomological Society of America, Vol. 84, no. 5
Download or read book Exploring Megaspilidae Hymenoptera written by Carolyn Trietsch and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceraphronoidea (Insecta: Hymenoptera) is a small but widespread superfamily of parasitoid wasps found on every continent except Antarctica. Ceraphronoids are some of the most commonly collected wasps in the world and include species that are important for agriculture, yet little is known about their life histories or even how many species there are. With habitat loss and extinction rates rising, it is crucial for taxonomists to describe and document these species before they are lost forever. My dissertation aims to accomplish this by providing a systematic exploration of the ceraphronoid family Megaspilidae, with a central focus on the genus Conostigmus Dahlbom in North America, North of Mexico.The first chapter introduces audiences to Ceraphronoidea, and the second and third chapters focus on describing and documenting the biodiversity of individual species of Megaspilidae. I redescribe Conostigmus albovarius Dodd, a unique species of Conostigmus with metallic coloration that was previously only known from a single female specimen. I report more female specimens and describe the male of the species for the first time, providing images of both male and female specimens so that others can easily identify them. I also describe a new species from Costa Rica, Dendrocerus scutellaris Trietsch and Mik, characterized by a series of spines that could be used for sawing its way out of the host insects it parasitizes. This species is the only ceraphronoid known to have these structures, and it serves as an example of how morphology can be used to hypothesize life history traits. The morphological descriptions of both Conostigmus albovarius and Dendrocerus scutellaris are provided in semantic format for ease of data integration and computerized searches among datasets. The fourth chapter explores morphological structures shared by all Ceraphronoidea: pairs of translucent cuticle present on the dorsal and ventral surfaces of the metasoma, with the ventral translucent patches flanked by rows of bristles. By using a variety of histological techniques, I show that the patches of bristles are associated with glandular activity, whereas the patches of translucent cuticle could be associated with endocrine glands or extraocular photoreceptors. These structures have never been studied before, despite the fact that they are found in other types of wasps as well and could offer clues to how these distant are related and how they may have evolved. The fifth chapter is a photographic catalog of historical Ceraphronoidea specimens present in the collections of the Museum national d'Histoire naturelle (MNHN) in Paris, France. The majority of these specimens have never been imaged or illustrated before, impeding taxonomic work and identification efforts. I also report unpublished species notes from former Ceraphronoidea taxonomist Paul Dessart, as well as the discovery of the missing male holotype of Ceraphron testaceus (Risbec, 1953) (Hymenoptera: Ceraphronidae) and several potential types of Aphanogmus aphidi (Risbec, 1955) (Hymenoptera: Ceraphronidae). This chapter will serve as a valuable resource to help taxonomists and others identify and research these species in the future. The sixth chapter revises all Conostigmus species found in the Nearctic, which I define as North America, north of Mexico. I examine and redescribe 10 of the 32 species that were previously known from the Nearctic; the remaining 22 species remain uncertain due to limited, damaged or missing type material. I describe 12 new species and report the occurrence of two additional species that were previously thought only to exist in outside of the Nearctic. I also provide an annotated key for the identification of Nearctic Conostigmus species, complete with images of all species and their distinguishing characteristics. This work represents the first in-depth study and revision of Conostigmus species in the Nearctic.The seventh chapter takes a step back to explore a larger topic impacting all entomologists: the ethics of insect collecting. I provide the Insect Collectors Code as a guide to ethical insect collecting for students and those training to become entomologists. In sharing this code with others, I hope to facilitate awareness and discussion of the ethics of insect collecting, and promote ethical and responsible collecting practices in the field of entomology.The appendices contain my contributions to other taxonomic work, including a revision of Malagasy species of Conostigmus and a description of a new species of Conostigmus fossilized in Eocene Baltic amber. I include a tribute to former Ceraphronoidea taxonomist Paul Dessart and discuss details of his life. Finally, I explore the lives of Penn State graduate students and discuss how, after tragically losing a fellow student, we started a craft-based social night to cope with the pressures of graduate school and build a supportive community. This work takes several steps forward in documenting the biodiversity of Ceraphronoidea and understanding the morphology and evolutionary relationships of the superfamily. As well as representing important taxonomic contributions to Hymenoptera research, this work also extends beyond the field of taxonomy to explore the ethics of insect collecting within the field of entomology, as well as looking into the lives of the scientists behind the science.
Download or read book Taxonomic Revision of Nylanderia Hymenoptera Formicidae in the Nearctic Region written by Robert J. Kallal and published by . This book was released on 2013 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nylanderia (Hymenoptera: Formicidae) is a genus in the Prenolepis genus-group of formicine ants. They are distinguished from other formicine genera by the presence of six (rarely seven) mandibular teeth, paired macrosetae on the head and mesosoma, and a global distribution. Over 130 species have been described, 13 of which are from the Nearctic region, which includes Canada, the United States, and areas of northern and central Mexico. Two species are newly described from the Nearctic region: N. querna and N. trageri, both from the central United States. All castes of each taxon are accompanied by images and known distribution maps. Updated keys for both workers and males include these new taxa. Worker morphology is frequently convergent and male features have proven effective in distinguishing species, and special attention is focused on the male caste. It is not unlikely that further analysis of widespread species would indicate cryptic complexes. Discussion follows on discovery of new species, biogeography, and social parasitism in the clade.
Download or read book A Taxonomic Revision of the Nearctic Species of Himerta Hymenoptera Ichneumonidae written by Luc LeBlanc and published by . This book was released on 1989 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Taxonomic Revision of the Nearctic Species of Himerta Foerster hymenoptera written by Luc Leblanc and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Taxonomic Revision of the Nearctic Genus Acanthomyops written by Cornell University. Agricultural Experiment Station and published by . This book was released on 1968 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1975 with total page 1922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Entomology Abstracts written by and published by . This book was released on 1998 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1975 with total page 1914 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biocontrol Based Integrated Management of Oilseed Rape Pests written by Ingrid H. Williams and published by Springer Science & Business Media. This book was released on 2010-06-16 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oilseed rape is a major arable crop in both Europe and North America. It is attacked by unique complexes of insect pests still largely controlled through the application of chemical insecticides. Crop management systems for the future must combine sustainability with environmental acceptability to satisfy both social and economic demands. This book, in its 17 chapters each led by a world expert, reviews research progress towards developing integrated pest management systems for the crop that enhance conservation biocontrol. This approach is particularly timely because of the development in Europe of insecticide resistance in the pollen beetle, a major pest of the crop. The past decade has seen considerable progress in our knowledge of the parasitoids and predators that contribute to biocontrol, of their distribution patterns, and their behavioural ecology, both within and without the crop. There is potential for natural enemy conservation through modification of within-field crop husbandry practices, as well as, on the landscape scale, through habitat manipulation to encourage vegetational diversity. This book will prove invaluable as a text for researchers, university teachers, graduate scientists, extension workers and growers involved in integrated pest management.
Download or read book Hymenoptera and Biodiversity written by John LaSalle and published by Oxford University Press, USA. This book was released on 1993 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing attention has been focused on biodiversity in recent years, based on a number of arguments to justify the conservation of the world's flora and fauna. Such arguments may be economic - that species may have potential for food or medicine - or ecological - that the extinction of any species affects the overall ecological balance. Little attention, however, has been focused on which groups have the greatest impact on maintaining diversity. Hymenoptera is one of these groups. It not only forms a major component of diversity itself, but is vital in sustaining diversity in other groups. Hymenoptera species (bees, wasps, ants and sawflies) are major plant pollinators, seed dispersers and parasitoids and predators of other arthropods (and hence important in biological control). This volume therefore tackles an important subject and concentrates on three key issues: how species of Hymenoptera affect diversity in other organisms; whether Hymenoptera is a group prone to extinction; and the consequences if Hymenoptera species are differentially removed from terrestrial ecosystems. The book is essential reading for entomologists and those concerned with biodiversity and conservation.
Download or read book The Anatomy of the Honey Bee written by Dr. R. E. Snodgrass and published by Pickle Partners Publishing. This book was released on 2018-02-27 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: “As a world authority on insect anatomy, Snodgrass has given us this book a brilliant account of the anatomy of the honey bee and how it relates to the way that bees develop and how and why they function as they do in their interesting communal life. This book should be in the library of every student of the honey bee and bee behaviour—beekeepers as well as scientists. The book is delightfully written and is enjoyable reading.”—American Bee Journal “This is not just a technical reference book on honey bee anatomy. It is far more, it is essentially a treatise on entomology, using one species as an example, and including a discussion of the fundamentals of embryology, development, and metamorphosis as well as anatomy. The subject of each chapter is approached from the broadest evolutionary point of view, and its horizon includes all the arthropods and beyond, so that the bee really typifies animal life in general. Finally, the language of the book is such that it can be read straight through with pleasure....It is a delight to follow the author through this complete examination of one insect: how it develops, how it grows, and how it operates.”—Entomological News
Download or read book An Introduction to the Modern Classification of Insects written by John Obadiah Westwood and published by . This book was released on 1839 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Random Fragmentation and Coagulation Processes written by Jean Bertoin and published by Cambridge University Press. This book was released on 2006-08-10 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fragmentation and coagulation are two natural phenomena that can be observed in many sciences and at a great variety of scales - from, for example, DNA fragmentation to formation of planets by accretion. This book, by the author of the acclaimed Lévy Processes, is the first comprehensive theoretical account of mathematical models for situations where either phenomenon occurs randomly and repeatedly as time passes. This self-contained treatment develops the models in a way that makes recent developments in the field accessible. Each chapter ends with a comments section in which important aspects not discussed in the main part of the text (often because the discussion would have been too technical and/or lengthy) are addressed and precise references are given. Written for readers with a solid background in probability, its careful exposition allows graduate students, as well as working mathematicians, to approach the material with confidence.
Download or read book Hymenoptera of America North of Mexico written by Karl V. Krombein and published by . This book was released on 1958 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Plants and Animals in Baltic Amber written by Wolfgang Weitschat and published by . This book was released on 2002 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
