Prelace ...5 officers of the Symposium ...11 // List of Participants ...11 // Introduction ...15 // SECTION I // Food Ecology of Aphidophagous Insects // Food Ecology of Aphidophagous Insects, a Review by B. C. Smith ...19 // Food Ecology of Aphidophagous Coccinellidae, a Review by I. Hodek ...23 // Subsection I a // Food of Different Species and the Factors Which Determine Specificity // Specificity of Aphidophagous Coccinellids in South-Eastern France, by G. Iperti ...31 // Food Specificity in Syrphidae and Coccinellidae of Central Asia, by V.V.Yakbontov ...35 // Occurrence of Syrphid Larvae on Some Aphids, by J. Dušek and P. Ldsha ...37 // Host Specificity in the Parasites and Hyperparasites of Apple Aphids, by H.H. Evembuis ...39 // Subsection Ib // Suitability of Different Aphids // The Development and Fecundity of Adalia bipunctaca L. and Coccinella septempunctata L. Feeding on Various Species of Aphids, by R.L. Blackman ...41 // Three Problems of Prey Specificity of Aphidophagous Coccinellids, by H. Okamoto ...45 // Subsection Ic // Amount of Aphid Food Eaten and Needed by Predators // Quantity of Aphids Required for Reproduction by Hippodamia spp. in the Laboratory, by K.S. Hagen and R. R. Sluss ...47 // Comparison of Voracity of Five Coccinellids, by G. Iperti ...- ...61 // Effect of Constant and Alternating Temperatures on Feeding and Development of Chilomenes sezmaculata Fb., by R.B. Gawande .63 // Food Ecology of Psallus ambíguus (Fall.) (Heter.: Miridae), by E.Niemczyk ...69 // Subsection Id // Value of Alternative, Natural and Artificial Food // Food Utili sation of the Common Minnesota Syrphinae Species, by C.L. Hamrum ...71 // Effects of Food on Some Aphidophagous Coccinellidae, by B.C. Smith ...75 // Artificial Diet for Chry sopa camea Stephens, by K.S. Hagen and R.L. Tassan ...83 //
A Method of Coating Droplets of Artificial Diets with Paraffin for Feeding // Chrysopa Larvae, by K.S. Hagen and R.L. Tassan 89 // Summing-up of the Section by M.J. Way ...91 // SECTION II // Voltinism and Arrest of Development in Aphidophagous Insects // Voltini sm and Diapause in Aphidophagous Insects, a Review by I. Hodeh ...97 // A Few Observations on the Diapause of Coccinella septempunctata L., by L. Bonnemaison ...103 // Voltinism and Arrest of Development in Aphidophagous Coccinellids of SouthEastern France, by G. Iperti 105 // Diapause in Coccinellidae of Central Asia, by V. V. Yakbontov ...107 // SECTION III // Behaviour of Aphidophagous Insects and of Aphids // Behaviour of Aphidophagous Insects, an Introduction by S. Bombosch ...111 // Subsection III a // Oviposit ion Behaviour // Some Aspects of Host Plant Selection in Aphidophagous Syrphidae, by A. E.F. Chandler ...113 // Selection of the Oviposition Site by Syrphus corollae Fabr., by S. Bombosch and St. Volk ...117 // The Choice of Oviposition Sites in Aphidophagous Coccinellidae, by G.Iperti ...121 // Subsection III b // Prey-Seeking Behaviour // On Prey-Seeking Behaviour of Aphidophagous Insects, by R. Bansch, ...123 // 8 // Effects of Food Quality and Age on the Larval Activities of Anatis mali Auct. . Coccinellidae), by B.C. Smith ...129 // Subsection III c // Migration and Aggregation Behaviour Coccinellid Aggregations, a Review by K.S. Hagen ...131 // Suspected Migratory Flight Behaviour of Hippodamia converges, by K.S. Hagen ...135 // Migration of Adonia undecimnotata in South-Eastern France, by G. Iperti ...137 // Hibernation and Migration of Coccinellids in South-Eastern Kazakhstan, by G.I. Savoishaya ...139 // Subsection III d // Behaviour of Aphids // Symbiosis of Aphids and Natural Enemies, by I. A. Rubtsov ...143 //
Possible Defensive Function of Summer Diapause in Drepanosiphum platanoides by J.S. Kennedy ...147 // Significance of Self* Regulatory Dispersal in Control of Aphids by Natural Enemies, by M.J. Way ...149 // Summing-up of the Section by J.S. Kennedy ...151 // SECTION IV // Distribution of Aphidophagous Insects in Habitats // Distribution of Entomophagous Insects in Their Habitats, an Introduction, by H.C. Chiang ...157 // Distribution of Coccinellid- in Habitats, by G. Iperti ...161 // Syrphid Larvae as Aphid Predators in Yugoslavia, by S. Glumac ...163 // Relation of Different Species of Coccinellidae to the Habitat of Fir-Forests, by B. Klausnitzer ...165 // Migration of Coccinellidae to the Sugar Beet Fields During the Influx of Aphis fabae Scop., by V. Skuhravy and K. Novak ...167 // Distribution of Enemies in Different Habitats During the Plant Growing Season, by S. Bombosch 17 1 // Occurrence of Enemies on Different Weeds with Aphids, by S. Bombosch ...177 // The Occurrence of Aphidivorous Syrphids and Their Larvae on Different Crops, with the Help of Coloured Water Traps, by R. Sol ...181 // 9 // The Natural Enemies of Aphidophagous Coccinellids, by G. Iperti ...185 // Protection of Coccinellids Against Mycosis, by G. Iperti ...89 // Syrphid Predators of Apple Aphids and Their Parasites, by H.W. Evenhuis .191 // Effects of Some Environmental Factors on the Di stribution of Three Species of Coccinellidae in Their Microhabitat, by M.A. Ewert and H. C. Chiang 195 // Summing-up of the Section by H.C. Chiang ...221 // SECTION V // Population Dynamics of Aphids and Their Natural Enemies // The Effectiveness of Aphidophagous Insects in Reducing Aphid Popul ations, // a Review by H.F. van Emden ...227 // Some Aspects of the Prey-Predator Relation, by J.H. Kuchlein ...237 //
Factors Influencing the Dynamics of Walnut Aphid Populations in Northern California, by R.R. Sluss and K.S. Hagen ...243 // Significance of Variation in the Weight, Size and Sex Ratioof Coccinellid Adults, by B. C. Smith ...249 // Some Components of Efficiency in Aphidophagous Coccinellids, by G. Iperti ...253 // The Effectiveness of Predators in Control of Aphis nasturtii Kalt, and Aphis frangulae Kalt. on Potatoes, by B. Gatecka ...255 // Population Dynamics of Aphis fabae Scop, and the Influence of Coccinellidae, by K. Behrendt 259 // An Aphid Predator Exclusion Test, by R.I. Sailer ...263 // Influence of Predation of Coccinella septempunctata on Aphis fabae, by I. Hodek, J. Nolmaw, K. Novak and V. Skwbravf ... 265 // Coccinellidae and Syrphidae as Predators of Aphids in Uzbekistan, by V.V. Yakbontov 267 // The Efficiency of Aphidophagous Insects in Control of Aphis fabae Scop., by S. Bombosch and 0. Tokmakoglu 271 // Predators of Aphids, Associated with Apple Orchards, by E.Niemczyk ...275 // Efficiency of Aphidophagous Insects in Iraq, by A.F. AL-Azawi 277 // Population Dynamics of the Parasites and Hyperparasites of Brevicoryne // brassicae (L.), by D. Paetzold and G. Vater ...279 // Importance of Intraspecific Competition in Aphids, by N.J. Way ...283 // Summing-up of the Section V, by R.F. Smith, ...285 // SECTION VI // Aphidophagous Insects in Biological and Integrated Control // The Aspects of Integrated Control with Reference to Aphids and Scale Insects, a Review by H.J. de Fluiter ...21 // Natural Regulation of Alfalfa Aphids in California, by R. F. Smith and K. S. Hagen 297 // The Significance of Coccinellidae in the Biological Control of Apple-Tree Aphids in the Alma-Ata Fruit-Growing Region, by G.1. Savoiskaya ...317 // The Role of Aphidophagous Coccinellida in the Biological Control, by G. Iperti ...321 //
Importance of Aphidophagous Insects in the Regulation of Potato Aphid Populations, by W. Meier ...323 // Integrated Control of Pea Aphid on Alfalfa, b. // K. Piekarczyk and W. Wegorek ...327 // Integrated Control of Several Aphids, by L. Bonnemaison ....329 // The Present Possibilities and Prospects of Integrated Control of Aphis fabae Scop., by ?. Hodek, J. Holman, K. Novak, v. Skubravy, P. Stary, L. Weisman and // J. Zelenj 331 // The Effect of Four Organopho sphorous Insecticides on Coccinellida and Chrysopids, by J. Zalemyj. 537 // Function of Aphidophagous Insects in Integrated Control, Summing-up of the Section VI, by H.J. de Fluiter ...341 // Index of Authors . ...345 // Index of Animals and Plants ...348 // Subject Index ...354