Contents -- Préface -- In Memoriam : Francois Leclant (1934-2001) -- CHAPTER 1: APHID BIOLOGY AND ECOLOGY -- Past and future of aphid biology (invited paper) -- Are aphid soldiers sterile? -- Post-copula guarding and sex ratios in aphids -- Alate aphid diversity and habitat selection, in east central Illinois, USA -- EXAMINE (EXploitation of Aphid Monitoring In Europe): an European thematic network for the study of global change impacts on aphids -- The conservation biology of aphids: the importance of host plant range -- State of Damson-hop aphid (Phorodon humuli Schrank) exules population on hops in the years 1986-2000 -- Presence of a secondary endosymbiotic bacterium suppresses growth, development and cell number of the host aphid -- Physiological interactions in the pea aphid bacteriocyte symbiosis under parasitism by the Braconid Aphidius ervi -- Analysis of age polyethism in a soldier-producing aphid, Tuberaphis styraci, on an artificial diet -- A general mechanism for predator- and parasitoid- induced dispersal in the pea aphid, Acyrthosiphon pisum -- Notes on the biology and ecology of Aphis spiraecola Patch in Northern Morelos, Mexico -- Secondary endosymbiotic microbiota of the pea aphid, Acyrthosiphon pisum, in natural populations -- Host plant specificity, life cycle and morphometric analysis of Ribes-inhabiting species of the genus Aphis L -- Wing induction by natural enemies: cues, mechanisms and adaptive value -- CHAPTER 2: TAXONOMY, SYSTEMATICS AND FAUNISTICS -- The subgeneric classification of Brachycaudus van der Goot -- Aphids of fruit trees in Tunisia -- Host plant association and utilization of gall forming aphids (Homoptera: Aphididae) in western and northwest Himalayas -- Uroleucon Mordvilko (Homoptera: Aphididae) from the Indian subcontinent.

Preliminary study of aphid diversity in China: taxonomic and geographic variation -- Species composition of Florida aphid fauna -- The history of the studies on aphid palaeontology and their bearing on the evolutionary history of aphids -- The aphid fauna of the Argentinean Tierra del Fuego -- What is the (aphid) subspecies? -- Host range and population density of Aphis fabae Scop. in Sinai Governorates, Egypt -- The life cycle of Metathoracaphis isensis Sorin, 1987 (Hemiptera, Aphididae) with descriptions of sexuales and eggs -- The species complex of aphids closely related to Dysaphis devecta (Walker). (Homoptera, Aphididae): Possible ways of its formation -- The case for Aphis solanella being a good species -- CHAPTER 3 : GENETICS, POPULATION BIOLOGY AND EVOLUTIONARY BIOLOGY -- Prospects in aphid genetics (invited paper) -- Evolution of sex allocation in the genus Tetraneura (Aphididae: Pemphiginae) -- Male mating performance in Myzus persicae (Sulzer) -- Toxicological and molecular characterization of Pyrethroid knockdown resistance (kdr) in the peach-potato aphid, Myzus persicae (Sulzer) -- Genetic variability of the recently introduced aphid Sitobion avenae in Chile -- Genetic and morphological variation in Neuquenaphis aphids on southern beeches (Nothofagus spp.) -- Soldier-specific genes expressed in the second instar sterile soldier of Tuberaphis styraci -- Host chemistry and genotypic variation of aphid populations -- Genetic variation in the Green apple aphid, Aphis pomi De Geer (Aphididae, Homoptera) detected using microsatellite DNA flanking sequences -- Microsatellite analysis of genetic variation within and between three populations of the aphid Macrosiphoniella tanacetaria in the Alsace region, France -- Local adaptation of Brevicoryne brassicae (Homoptera: Aphididae) to host species at Chiapas, Mexico.

CHAPTER 4 : POPULATION DYNAMICS, BIOLOGICAL CONTROL AND INTEGRATED PEST MANAGEMENT -- Assessing the suitability of alternative host aphids for Ephedrus persicae Froggatt (Hymenoptera: Braconidae), the main parasitoid attacking Dysaphis plantaginea (Passerini) (Homoptera: Aphididae) in Belgian apple orchards -- Monitoring of insecticide resistance in Myzus persicae from Greece -- Attraction toward alfalfa and wheat aphid-host plant complexes explains the absence of genetic population structure of the parasitoid Aphidius ervi (Hymenoptera: Braconidae) in Chile -- Decision support for BYDV control in the United Kingdom: can a regional forecast be made field specific? -- Population dynamics and natural enemies of the tobacco aphid (Myzus nicotianae Blackman) in central Chile -- A laboratory study on colonisation of aphids by some filamentous fungi -- Effect of mulch on aphid populations and virus transmissions in some arable crops -- Development of a forecasting system for the integrated pest management of Dysaphis plantaginea -- The effect of environmentally induced variation of host-plant vigour on abundance of cereal aphids -- A simple aphid population model -- Use of Internet for provision of user specific support for decisions on the control of aphid-borne virus -- Imperfect host discrimination and patch exploitation strategy in an aphid parasitoid -- Thermal requirement of Aphis gossypii Glover, 1877 (Hemiptera: Aphididea) when reared on different chrysanthemum cultivars -- Monitoring citrus aphids in Mexico -- Aphids on ornamental shrubs and trees in an urban area of the Catalan coast: bases for an IPM programme -- Disruption of entomopathogenic fungi of green peach aphid, Myzus persicae (Sulzer), by fungicides used to control potato late blight.

The effect of competition for food among aphids on development time of Aphidius colemani Viereck (Hymenoptera: Aphidiidae) -- Phenology and population structure in the autumn flight of Rhopalosiphum padi in Northern Germany -- CHAPTER 5: APHID-PLANT RELATIONSHIPS -- Macroevolution of aphid-plant relationships: an integrated approach (invited paper) -- Aphid symbiosis as viewed from a symbiont's genome (invited paper) -- Host plants of Aphis gossypii in Saudi Arabia -- Distribution of the pea aphid, Acyrthosiphon pisum Harris, on the stems of alfalfa, Medicago sativa L -- Different Russian wheat aphid (Diuraphis noxia) biotypes in Hungary and South Africa -- Host-races of the pea aphid, Acyrthosiphon pisum: biological criteria and feeding behaviour of clones originating from legumes -- Evaluation of medics resistance to pea aphid clones of two host-races -- Influence of biochemical changes in the host plant tissues on growth stages of Epipemphigus imaicus (Aphididae) -- Bluegreen aphid resistance in breeding lines of the model legume Medicago truncatula -- Characterization of melon germplasm resistant to Aphis gossypii Glover -- Impact of a controlled infestation of pea aphids on spatial distributions of growth, water and dry matter deposition in elongating alfalfa stems -- Symbionts and host specificity in aphids -- Changes in bird cherry-oat aphid metabolism while occurring on primary host -- Studies of feeding behaviour related to the acquisition of Cauliflower mosaic virus by aphids -- Sieve element salivation and the transmission to ingestion -- Parturition by colonising aphids: no correlation with phloem ingestion -- Aphid response to plant defensive compounds in lupins -- Mapping of a genetic factor of partial resistance to Myzus persicae in the wild peach Prunus davidiana, that impedes phloem sap ingestion by the aphid.

Breeding for aphid and virus resistance in potatoes -- What is a host plant? Aphid-plant interactions in three Vicia faba exploiting aphids -- Hydrolysis of plant glycosides by cereal aphids -- Optimising rearing conditions for Myzus persicae on potato sprouts: how important are glycoalkaloids? -- AUTHORS ADDRESSES -- AUTHORS INDEX.