As editor of this volume I am not going to emphasize the economic im portance of the Bruchids of pulses, nor how necessary it is to know the conditions of infestation of crops in order to achieve an efficient protection; both points are testified by F.A.O.'s sponsorship, as well as of the International Organization for Biological Control. On the other hand I would like to stress the scientific interest of the study of 'domestic' bruchids. It raises questions which require that present basic entomological knowledge be extended. I am not going to review all questions raised but I will emphasize those I am most aware of. Some bruchid species have been able to colonize habitats differing totally; some differing in their latitude, and thus their basic periodicities; others differing in their degree of complexity (stocks of seeds): What are the respective roles played by polymorphism and plasticity in that exceptional capacity? What differences are there between the populations living on wild plants in dispersal areas and those living in stocks? What are the alterations brought about by the drastic selection pressures in populations having later colonized habitats ecologically similar to the original habitats? What factors determine the degree of specificity of trophic relationships, and the possibilities of extension of the niche? What influences are exerted by the other elements of the original bio cenoses upon the behavioural evolution of these species? Such are a few fundamental problems that can be tackled directly through"

This text provides readers with an in-depth exploration of how biological control functions and how it can be safely employed to solve pest problems and enhance nature conservation. It covers the principles behind biological control techniques and their implementation, and incorporates practical examples from the biological control of a variety of pests. It contains detailed chapters on conserving natural enemies through environmental management, importation of new natural enemies for control of pests, augmentation of natural enemies through rearing and release, and the development and application of pathogens and biopesticides.

Earthworms, which belong to the order Oligochaeta, comprise roughly 3,000 species grouped into five families. Earthworms have been called 'ecosystem engineers'; much like human engineers, they change the structure of their environments. Earthworms are very versatile and are found in nearly all terrestrial ecosystems. They play an important role in forest and agricultural ecosystems. This Soil Biology volume describes the various facets of earthworms, such as their role in soil improvement, soil structure, and the biocontrol of soil-borne plant fungal diseases. Reviews discuss earthworms' innate immune system, molecular markers to address various issues of earthworm ecology, earthworm population dynamics, and the influences of organic farming systems and tillage. Further topics include the characteristics of vermicompost, relationships between soil earthworms and enzymes, the role of spermathecae, copulatory behavior, and adjustment of the donated sperm volume.

My initial interest in the Solifugae (camel-spiders) stems from an incident that occurred in the summer of 1986. I was studying the behavioral ecology of spider wasps of the genus Pepsis and their interactions with their large theraphosid (tarantula) spider hosts, in the Chihuahuan Desert near Big Bend National Park, Texas. I was monitoring a particular tarantula burrow one night when I noticed the resident female crawl up into the burrow entrance. Hoping to take some photographs of prey capture, I placed a cricket near the entrance and waited for the spider to pounce. Suddenly, out of the comer of my eye appeared a large, rapidly moving yellowish form which siezed the cricket and quickly ran off with it until it disappeared beneath a nearby mesquite bush. So suddenly and quickly had the sequence of events occurred, that I found myself momentarily startled. With the aid of a headlamp I soon located the intruder, a solifuge, who was already busy at work macerating the insect with its large chelicerae (jaws). When I attempted to nudge it with the edge of my forceps, it quickly moved to another location beneath the bush. When I repeated this maneuver, the solifuge dropped the cricket and lunged at the forceps, gripping them tightly in its jaws, refusing to release them until they were forcefully pulled away.

Arthropods are invertebrates that constitute over 90% of the animal kingdom, and their bio-ecology is closely linked with global functioning and survival. Arthropods play an important role in maintaining the health of ecosystems, provide livelihoods and nutrition to human communities, and are important indicators of environmental change. Yet the population trends of several arthropods species show them to be in decline. Arthropods constitute a dominant group with 1.2 million species influencing earth's biodiversity. Among arthropods, insects are predominant, with ca. 1 million species and having evolved some 350 million years ago. Arthropods are closely associated with living and non-living entities alike, making the ecosystem services they provide crucially important. In order to be effective, plans for the conservation of arthropods and ecosystems should include a mixture of strategies like protecting key habitats and genomic studies to formulate relevant policies for in situ and ex situ conservation. This two-volume book focuses on capturing the essentials of arthropod inventories, biology, and conservation. Further, it seeks to identify the mechanisms by which arthropod populations can be sustained in terrestrial and aquatic ecosystems, and by means of which certain problematic species be managed without producing harmful environmental side-effects. This edited compilation includes chapters contributed by over 80 biologists on a wide range of topics embracing the diversity, distribution, utility and conservation of arthropods and select groups of insect taxa. More importantly, it describes in detail the mechanisms of sustaining arthropod ecosystems, services and populations. It addresses the contribution of modern biological tools such as molecular and genetic techniques regulating gene expression, as well as conventional, indigenous practices in arthropod conservation. The contributors reiterate the importance of documenting and understanding the biology of arthropods from a holistic perspective before addressing conservation issues at large. This book offers a valuable resource for all zoologists, entomologists, ecologists, conservation biologists, policy makers, teachers and students interested in the conservation of biological resources.

The dipteran family Chironomidae is the most widely distributed and frequently the most abundant group of insects in freshwater, with rep resentatives in both terrestrial and marine environments. A very wide range of gradients of temperature, pH, oxygen concentration, salinity, current velocity, depth, productivity, altitude and latitude have been exploited, by at least some chironomid species, and in grossly polluted environments chironomids may be the only insects present. The ability to exist in such a wide range of conditions has been achieved largely by behavioural and physiological adaptations with relatively slight morphological changes. It has been estimated that the number of species world-wide may be as high as 15000. This high species diversity has been attributed to the antiquity of the family, relatively low vagility leading to isolation, and evolutionary plasticity. In many aquatic ecosystems the number of chironomid species present may account for at least 50% of the total macroinvertebrate species recorded. This species richness, wide distribution and tolerance to adverse conditions has meant that the group is frequently recorded in ecological studies but taxonomic difficulties have in the past prevented non-specialist identification beyond family or subfamily level. Recent works, including genetic studies, have meant that the family is receiving much more attention globally."

Insect Learning is a comprehensive review of a new field. Until recently, insects were viewed as rigidly programmed automatons; now, however, it is recognized that they can learn and that their behavior is plastic. This fundamental change in viewpoint is causing a re-examination of all aspects of the relationship between insects and their environment. This change in perspective is occurring at a time of heightened interest in brain function in both vertebrates and invertebrates. Insects potentially play a major role in this expanding area. Because of their experimental tractability and genetic diversity, they provide unique opportunities for testing hypotheses on the ecology and evolution of learning. As organisms of economic importance, they are perennial objects of research by both basic and applied scientists. Insect Learning covers both social and non-social insects from multiple perspectives. The book covers mechanisms; syntheses of work on physiology, behavior, and ecology; and micro- and macroevolution. The concluding section discusses future directions for research, including applications to pest management.

Harmonia axyridis has been described as the "most invasive ladybird on Earth". It has a long history of use as a classical biological control agent in the USA and more recently in Europe. This beetle has been effective at controlling pest insects in a variety of crop systems but it poses unacceptable risks by impacting on non-target species as both an intraguild predator and competitor. Written by renowned scientists, this book is a synthesis of recent research on H. axyridis and provides informative insights into current perspectives and future directions. Biological control is an essential component of sustainable agriculture but the distinction between a successful biological control agent and an invasive species can be narrow. We hope that lessons can be learnt from H. axyridis.

The small fruit fly, Drosophila melanogaster, has for over a century now had a large impact on biological and biomedical research; however, our knowledge of the fly brain has lagged significantly behind our understanding of other aspects of its development, physiology, and function. In The Making and Un-Making of Neuronal Circuits in Drosophila, innovative expert neuroscientists in the field present the ideas and concepts behind the methods, tools, and tricks that are currently being utilized to decode the secrets of this valuable insect's brain. Focused on the concept of a neuronal circuit, defined as a series of synaptically connected neurons subservient to a particular behavioral modality, this volume contains chapters dealing with anatomical analysis with a focus on cellular and sub-cellular morphologies. These detailed approaches fall under the headings of "Physiology" and "Behavior", conveniently divided the book into two sections. Written in the easy-to-follow Neuromethods series format, this work provides the kind of detailed description and implementation advice that is crucial for getting optimal results. Inventive and accessible, The Making and Un-Making of Neuronal Circuits in Drosophila provides the information and tools necessary to carry out current experiments and, more importantly, further advance the progress of the Drosophila neurobiology field and neurobiology in general.

This is a compendium of current knowledge about the crustacean subclass Branchiura Thorell, 1864. An overview of the group is presented, starting from the first species description, and reports of taxonomic changes. It also provides a condensed retrospect of each genus and includes the characteristics of each genus, the geographical distribution of each species arranged according to occurrence per continent; and aspects of the anatomy, physiology, host-parasite interactions and phylogeny are discussed. In order to condense the information available on members of the subclass, additional literature sources on each aspect are tabulated. This text will be useful for fish health practitioners, researchers and students of Parasitology and Fish Veterinary Medicine. The contents of this volume were originally published in 2016 in Crustaceana volume 89, issue 11-12.

Nematodes are one of the most abundant groups of invertebrates on the face of the earth. Their numbers are estimated to range from 1000 per cm2 in the sand-covered hydrogen sulphide black zone beneath the ocean floors to 1.2 billion in a single hectare of soil. Estimates for their species diversity range from 100 000 to 10 million. The past history of nematodes is a mystery, since very few fossils have been discovered. This book establishes a solid base in palaeonematology with descriptions of 66 new fossil species and accounts of all previous fossil and subfossil nematodes from sedimentary deposits, coprolites, amber and mummies. It shows how nematode fossils can be used to establish lineages at various locations and time periods in the earth s history and when nematodes entered into symbiotic and parasitic associations with plants and animals.

Myriapods are the only major zoological group for which a modern encyclopedic treatment has never been produced. In particular, this was the single major gap in the largest zoological treatise of the XIX century (Grass s Trait de Zoologie), whose publication has recently been stopped. The two volumes of The Myriapoda fill that gap with an updated treatment in the English language. Volume I opens with an introductory treatment of myriapod affinities and phylogeny. The following chapters are mostly devoted to the Chilopoda or centipedes, extensively treated from the point of view of external and internal morphology, physiology, reproduction, development, distribution, ecology, phylogeny and taxonomy. All currently recognized suprageneric and generic taxa are considered. Additional chapters deal with the two smaller myriapod classes, the Symphyla and the Pauropoda. Volume II deals with the Diplopoda or millipedes. As in the previous volume, the treatment is articulated in chapters dealing with external and internal morphology, physiology, reproduction, development, distribution, ecology, phylogeny and taxonomy. All currently recognized suprageneric taxa and a very large selection of the genera are considered. All groups and features are extensively illustrated by line drawings and micrographs and living specimens of representative species of the main groups are presented in color photographs

The field of insect nutritional ecology has been defined by how insects deal with nutritional and non-nutritional compounds, and how these compounds influence their biology in evolutionary time. In contrast, Insect Bioecology and Nutrition for Integrated Pest Management presents these entomological concepts within the framework of integrated pest management (IPM). It specifically addresses bioecology and insect nutrition in modern agriculture. Written for graduate students and professionals in entomology, this book covers neotropical information in three sections:

• General Aspects: Basic bioecology and insect nutrition; artificial diets; insect/plant interactions; insect symbionts; the interface of chemical ecology with the food; and insect cannibalism
• Specific Aspects: Specific feeding guilds of insects including ants, social bees, leaf chewers, seed suckers, seed chewers, root feeders, gall makers, detritivorous feeders, pests of storage grains, fruit flies, aphids, endo- and ectoparasitoids, predators, crisopids, and hematophagous insects
• Applied Aspects: Host plant resistance and the design of IPM programs in the context of insect bioecology and nutrition

Much of the research on which these chapters were written was done in Brazil and based on its neotropical fauna. The complexity and diversity of the neotropics provides enough data that readers from all zoogeographical regions can readily translate the information in this book to their specific conditions. The book s value as an entry point for further research is enhanced by the inclusion of approximately 4,000 references.

The parasitic Hymenoptera are a highly successful and important group of insects comprising probably over a million species. Despite the vast amount of research that has been carried out on the group over the last 100 years or so, there are still many unexplained aspects of their biology. In recent years interest in the parasitic Hymenoptera has grown as a result of the increasing demand for biological methods for pest control and their possible use as natural enemies. Parasitic wasps are also tremendously important in research on pollution dynamics and on host-parasite interactions. In this unique volume Donald Quicke provides an up-to-date review of the biology of parasitic wasps which focuses primarily on genetics, developmental biology, physiology, anatomy and molecular biology, though many aspects of behaviour and ecology are also covered. Attention is drawn to the importance of both life history strategy an phylogeny to many features of parasitic wasp biology, and exciting new areas of research are highlighted. Parasitic Wasps provides an extensive guide to the relevant literature. The book will prove invaluable to researchers working on this group and to those with broader interests in entomology, physiology, behaviour, ecology and pest control.

TheInternationalConferencesonEphemeroptera(Mayflies)andSymposiaonPlecoptera (Stoneflies)areheldeverythreeyears,indifferentpartsoftheworld. Theseeventsallow specialistsfromdifferentcountriestointeractandpresenttheresultsoftheirlatest investigations. TheIXInternationalConferenceonEphemeropteraandXillInternationalSymposiumon Plecoptera,wereheldAugust16-21,1998,andAugust20-23,1998,respectively,inTaffdel Valle,Tucuman,Argentina,withajointsymposiumonAugust20,1998. Theseeventswerehos- tedbythe"InstitutoSuperiordeEntomologfa"FacultaddeCienciasNaturales,fromtheNational UniversityofTucuman,andattendedbyapproximately80specialistsfrom25countries. Atpresent,whenthebiodiversitycrisisandthepressuresonfresh-waterenvironmentsand theirinhabitantsareworsethaneverbefore,theinformation,discussionsandguidelinescoming outofeventsofthiskindarebecomingmoreandmoreimportant. The54papersincludedinthisvolumeareamongthosepresentedduringthemeetings, andacceptedafterpeerreviewbyinternationalspecialists. Thepapersaregroupedinfivelooselydefinedsections(exceptthefirstthatcorresponds toapaneldiscussion),althoughseveralofthepaperscouldexceedthesubjectboundaries wheretheyarelocated. Iwouldliketothankthemanyindividualsandinstitutionsthathelpedwithboththis bookandtheorganizationoftheevents,namely: Themembersoftheorganizingcommittee:H. R. Fernandez,M. G. Cuezzo, F. Romero, C. Molineriand C. Nieto. AlsocollaboratingwereM. Ceraolo,1. Chocobar,M. Guzmande Tome,S. Moro,M. Orce,V. Manzoandmanyvolunteersandstudentstoonumeroustodetail here. Withouttheiruntiringefforts,theeventssimplywouldnothavebeenpossible. Thefollowingpersonsactedasmanuscriptreviewers:J. Alba-Tercedor,J. V. Arnekleiv, R. Baumann,J. E. Brittain, 1. C. Campbell,J. M. Elouard,J. F. Flannagan,R. W. Flowers, C. Froehlich,E. Gaino,M. T. Gillies,P. Goloboff,P. M. Grant,M. D. Hubbard, Y. Isobe,J. Jackson,N. N. Kapoor,P. Landolt, W. P. McCafferty, 1. McLellan,R. Nelson, W. L. Peters,G. Pritchard,M. Sartori,!. Sivec,1. Stanford, K. W. Stewart,D. Studemann,B. Stark,P. Suter,B. Sweeney,S. Szczytko,andP. Zwick. Theseinstitutionsprovidedtheirinstitutionaland/oreconomicsupport:Facultadde CienciasNaturaleseInstitutoMiguelLillo,UniversidadNacionaldeTucuman;ConsejoNa- cionaldeInvestigacionesCientificasyTecnicas(CONICET);ConsejodeInvestigaciones, UniversidadNacionaldeTucuman(CIUNT);Fundaci6nAntorchas,Fundaci6nMiguelLillo; Direcci6ndeTurismo,MunicipalidaddeTaffdelValle. vii viii Preface ThePermanentCommitteeonEphemeropteraConferencesprovidedpartialfinancial supportforfellowshipsforstudentsfromtheCzechRepublic,ChinaandSlovenia;andthe NorthAmericanBenthologicalSocietyforstudentsfromBoliviaandVenezuela. Thecompletionofthisbookwouldnothavebeenpossiblewithouttheinvaluableeffort ofGustavoSanchez,whomadethedigitalworkoftheoriginalsandthecoverdesign, C. Molineriand C. Nietowhopatientlyreviewedthefinalcopies,andvaluableadvicefrom MaryAnnMcCarraandRobertWheeler. ThecoverillustrationsweredonebyS. RoigJu- nen!(Ephemeroptera)and A. Dupuy(Plecoptera). EduardoDominguez ConvenorandEditor August,2000 CONTENTS STATUS OF THE KNOWLEDGE OF EPHEMEROPTERA IN THE WORLD IntroductiontothePanelDiscussion . 1. Alba-Tercedor StatusoftheKnowledgeofEphemeropterainNortheastAsiaandGuidelinesfor FutureResearch...3 y. 1. Bae TheCurrentStatusofEphemeropteraBiologyinAustralia...7 I. C. Campbell KnowledgeoftheAfrican-MalagasyMayflies ...13 J. M. Elouard TheGentleQuest: 200YearsinSearchofNorthAmericanMayflies...21 W. P. McCafferty TheStatusoftheTaxonomyoftheMayfly(Ephemeroptera)FaunaofSouthAmerica. . 37 M. L. Pescador,M. D. Hubbard,andM. delC. Zuniga TheEphemeropteraofNewZealandandNewCaledonia...43 W. L. Peters CurrentKnowledgeofMayflyResearchinEurope(Ephemeroptera)...47 M. Sartori StatusoftheSystematicKnowledgeandPrioritiesinEphemeropteraStudies: theOrientalRegion '...53 T. Soldan ECOLOGYANDBEHA~OUR LifeCycleandAnnualProductionof Caenissp(Ephemeroptera,Caenidae) inLakeEscondido(Bariloche,Argentina)...67 D. A. AnonSuarezandR. 1. Albarino ix x Contents EffectsofRotenoneTreatmentonMayflyDriftandStandingStocks inTwoNorwegianRivers...77 1. V. Arnekleiv,D. Dolmen,and L. Rj(jnning LongitudinalDistributionoftheMayfly(Ephemeroptera)Communities attheChocancharavaRiverBasin(Cordoba,Argentina)...89 M. delC. Corigliano,C. M. Gualdoni, A. M. Oberto,andG. B. Raffaini EmergenceofEphemeropterafromtheAssiniboineRiver,Canada...97 1. F. Flannagan,1. Alba-Tercedor,R. G. Lowen,andD. G. Cobb MayfliesasFood 107 P. M. Grant SeasonalVariationofEphemeropterainFourStreamsofGuatopoNational Park,Venezuela...:...125 V. Maldonado,B. Perez,andC. Cressa AbundanceandAltitudinalDistributionofEphemeropterainan Andean-PatagoneanRiverSystem(Argentina)...

Only four short decades ago, the control of insect pests by means of chemicals was in its early infancy. The pioneers in the area consisted largely of a group of dedicated applied entomologists working to the best of their abilities with a very limited arsenal of chemicals that included inorganics (arsenicals, fluorides, etc.), some botanicals (nicotine), and a few synthetic organics (dinitro-o-cresol, organothiocyanates). Much of the early research was devoted to solving practical problems associated with the formulation and application of the few existing materials, and although the discovery of new types of insecticidal chemicals was undoubtedly a pipe dream in the minds of some, little or no basic research effort was expended in this direction. The discovery of the insecticidal properties of DDT by Paul Miiller in 1939 has to be viewed as the event which marked the birth of modern insecticide chemistry and which has served as the cornerstone for its subse quent developement. DDT clearly demonstrated for the first time the dramatic potential of synthetic organic chemicals for insect control and provided the initial stimulus which has caused insecticide chemistry to become a field not only of immense agricultural and public health importance but also one that has had remarkable and unforseeable repercussions in broad areas of the physical, biological, and social sciences. Indeed, there can be few other synthetic chemicals which will be judged in history to have had such a broad and telling impact on mankind as has DDT."

This text provides an introductory account of the physiology of insects, intelligible to any reader with an elementary knowledge of biology. It should be of interest to undergraduate students of biology, entomology and agriculture.

Biomonitoring is a vital and rapidly growing field. Freshwater Biomonitoring and Benthic Macroinvertebrates presents a state-of-the-art look at the use of benthic macroinvertebrates (aquatic insects, molluscs, crustaceans, and worms) in the biological assessment of water quality in lakes and streams. The use of these organisms has increased dramatically in the past two decades in both North America and Europe; no other comprehensive overview of the topic is available. This book contains contributions from nineteen experts from North America, Europe, and Australia. Some chapters contain updates and syntheses of new information on previously reviewed topics, while others present the first detailed coverage of a topic. The book includes much useful reference material on the history of biomonitoring with invertebrates as well as work of a more practical nature. The design, implementation, analysis and interpretation of benthic surveys are discussed in detail, as are toxicity testing and field experiments. This timely and important book will be of interest to professional entomologists, invertebrate zoologists, and aquatic ecologists, especially those in applied areas concerned with environmental quality, preservation, and restoration. Those working in the growing environmental biotechnology field, or in government agencies responsible for monitoring drinking water, environmental quality, or marine habitats, will also find many new ideas here.

Arthropods are one of the most concerning threats in poultry industries due to both direct and indirect pathogenic effects. One of the most important arthropods affecting poultry production is in the genus Dermanyssus (Acari: Dermanyssidae) with Dermanyssus gallinae (De Geer) the most important (Fletcher and Axtell 1991; Maurer and Baumga rtner 1992). Dermanyssus gallinae, also known as 'poultry red mite' or 'red mite' is a direct pest becauseitisanobligatoryblood-suckingparasite;itisonthebirdonlytofeedfor30-60 min and to spend the rest of the time concealed in cracks and crevices or in the litter. Its eggs are laid in the hiding places and hatch into six-legged larvae in 2-3 days. The chicken mite is seldom seen on the birds because of its intermittent feeding at night but skin lesions (especially on the breast and lower legs) are evidence of the feeding (Baker 1999). InEurope,D.gallinaeisoneofthemajorproblemsinlayingcagedhensandlessinbroiler industries (Chauve 1998) due to the longer productive cycle related to the former mana- ment.Theprevalenceofinfestedfarmsrangesfrom60%inUK(Guyetal.2004;Fiddesetal.