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Contents - Proceedings of the Netherlands Entomological Society Meeting 07

Huis, A. van 1996.
The traditional use of anhropods in Sub Saharan Africa (p. 3-20 )

Schoenmaker, A. & R. Stouthamer 1996.
Contribution of heterosis to the coexistence of Wolbachia-infected and uninfected Trichogramma deion forms (p. 21-25 )

Silva, I.M.M.S. & R. Stouthamer 1996.
Can the parthenogenesis-Wolbachia lead to unusual courtship behaviour in Trichogramma? (p. 27-31 )

Stolk, C. & R. Stouthamer 1996.
Influence of a cytoplasmic incompatibility-inducing Wolbachia on the fitness of the parasitoid wasp Nasonia vitripennis (p. 33-37 )

Verbeek, M., S.A. Hogenhout, F. van der Wilk & 1996.
The ability of plant derivatives to influence the endosymbiont population of Myzus persicae (p. 39-49 )

Hogenhout, S.A., F. van den Heuvel, M. Verbeek, R.W. Goldbach & J.F.J.M. van den Heuvel 1996.
Functional expression of symbionin, an aphid endosymbiont-derived protein (p. 41-42 )

Meer, M.M.M. van, F.J.P.M. van Kan & R. Stouthamer 1996.
Can Wolbachia micro-injections induce parthenogenesis in sexual insects? (p. 43-44 )

Francke, P.J., M.G. Siers & M.J. Sommeijer 1996.
Foraging behaviour of stingless bees and honey bees with respect to three selected plant species on Tobago (p. 45-50 )

Wunderink, M.E. & M.J. Sommeijer 1996.
The ultimate function of the provisioning and ovipositioning process (POP) in stingless bees: an experimental study (p. 51-55 )

Aguilar, I. & M.J. Sommeijer 1996.
Communication in stingless bees: are the anal substances deposited by Melipona favosa scent marks? (p. 57-63 )

Toorn, H.W.P. van den & J.J.M. Pereboom 1996.
Determination of larval instar in bumblebees (Hymenoptera: Apidae) by using the head capsule width (p. 65-69 )

Beekman, M., P. van Stratum & A.Veerman 1996.
Diapause in the bumblebee Bombus terrestris (p. 71-75 )

Augustijn, C.H. 1996.
The reaction of the remaining honeybee colony on the issue of swarms (p. 77-82 )

Rodrigues, I., J. Beetsma, W.J. Boot & J. Calis 1996.
Testing hygienic behaviour in four different honeybee strains (Apis mellifera L.) (p. 83-88 )

Calis, J., W.J. Boot & J. Beetsma 1996.
Reproductive success of the Varroa mite in honeybee worker brood with differential development times (p. 89-94 )

Houten, Y.M. van & T . van Lier 1996.
Effect of temperature and humidity on survival of the thrips predators Amblyseius cucumeris and A. limonicus in a cucumber crop (p. 95-99 )

Roermund, H.J.W. van & J.C. van Lenteren 1996.
Factors affecting whitefly control by the parasitoid Encarsia formosa in tomato (p. 101-108 )

Deventer, P. van & A.K. Minks 1996.
Efficiency of pheromone traps in greenhouse conditions (p. 109-114 )

Vrie, M. van de 1996.
Integrated pest managemcent on field grown tomatoes in Honduras (p. 115-116 )

Kooi, R.E. 1996.
FactOrs influencing food plant acceptance by the tropical butterfly Bicyclus anynana (Satyrinae) (p. 117-122 )

Wertheim, B. & M.M. Ottenheim 1996.
Survival of Eristalis arbustorum L. (Diptera: Syrphidae) under field and semi-field conditions (p. 123-126 )

Verhoog, M.D., A. van Boven & P.M. Brakefield 1996.
Melanic moths and the ability to encapsulate parasitoid eggs and larvae (p. 127-133 )

Siepel, H., A. Remmelzwaal, B. Voslamber, J. Burgers, R. van Kats & D. Lammertsma 1996.
The importance of grassy field margins for the maintenance of biodiversity in rural areas (p. 135-140 )

Guldemond, L.A., E. den Belder & G. Meyer 1996.
How to measure intrinsic rates of increase (rm) of aphid populations? (p. 141-144 )

Knevel, I.C., A. Kamping, H.H. de Vrice, Th.S. van Dijk & W. van Delden 1996.
Genetic variation in isolated populations of the ground beetle Pterostichus lepidus L. (Coleoptera: Carabidae) (p. 145-150 )

Mabelis, A. & E. Mekenkamp 1996.
Grasshoppers in fragmented habitats (p. 151-152 )

Posthuma-Doodeman, C .J.A.M., J.C. van Lenteren, I. Sebestyen & Z. Ilovai 1996.
Short-range flight test for quality control of Encarsia formosa (p. 153-158 )

Roskam, M.M., G.H. Wessels & J.C. van Lenteren 1996.
Flight capacity and body size as indicators of quality for the whitefly parasitoid Encarsia formosa (p. 159-164 )

Drost, Y.C., A. Fadl Elmula , C.J.A.M. Posthuma-Doodeman & J.C. van Lenteren 1996.
Development of selection criteria for natural enemies in biological control: parasitoids of Bemisia argentifolii (p. 165-170 )

Dijken, F.R. van, N. Koning & B. Gebala 1996.
Host plant resistance in transformable chrysanthemum cultivars to Frankliniella occidentalis (p. 171-176 )

Wäckers, F.L., A. Björnsen & S. Dorn 1996.
A comparison of flowering herbs with respect to their nectar accessibility for the parasitoid Pimpla turionellae (p. 177-182 )

Wetering, F. van de, J. Hulshof, F.R. van Dijken, R. Goldbach & D. Peters 1996.
Differences in virus transmission and scar production among males and females of the western flower thrips (p. 183-189 )

Brouwer, I., B. Gebala & F.R. van Dijken 1996.
A new bioassay to test host plant resistance of chrysanthemum flowers to the western flower thrips (p. 191-192 )

Hora, K.H. & P. Roessingh 1996.
Oviposit ion behaviour and host discrimination of Yponomeuta cagnagellus (p. 193-194 )

Schütte, C., P. van Baarlen, H. Dijkman & M. Dicke 1996.
How can predatory mites loose their response to plant signals? (p. 195-196 )

Bleeker, E.A.J., M.C. Buckert-de Jong, H.G. van der Geest & M.H.S. Kraak 1996.
Toxicity of nitrogen-containing polycyclic aromatic hydrocarbons (NPAH) to the midge Chironomus riparius (Diptera) (p. 197-202 )

Groenendijk, D., J.F. Postma & W. Admiraal 1996.
Influence of drift on population dynamics of metal exposed and reference populations of the midge Chironomus riparius (p. 203-209 )

Stuijfzand, S.C., D. Shen, M. Helms & M.H.S. Kraak 1996.
Effects of pollution in the river Meuse on the midge Chironomus riparius (p. 211-216 )

Kraan, C. van der & W.K.R.E. van Wingerden 1996.
Use of the eggs of the large marsh grasshopper (Stethophyma grossum L.) for testing the effects of polycyclic aromatic hydrocarbons (PAH) (p. 217-222 )

Mueller, T. & S.A. Ulenberg 1996.
Antennal sensory organs in Dichrorampha and Epiblema (Lepidoptera: Torticidae). A scanning electron microscope study (p. 223-231 )

Kan, F.J.P.M. van, I.M.M.S. Silva, M. Schilthuizen, J.D. Pinto & R. Stouthamer 1996.
Use of DNA-based methods for the identification of minute wasps of the genus Trichogramma (p. 233-237 )

Schelvis, J. 1996.
Arthropods as archaeologists (p. 239-240 )

Groenendijk, C.A., N.T. Griffiths & W. Takken 1996.
The initial flight direction of tsetse (Diptera: Glossinidae) exposed to natural and synthetic ox odour (p. 241-246 )

Boer, R. de 1996.
Movements of house dust mites (Dermatophagoides spp., Acari: Pyroglyphidae) in response to changing physical circumstances (p. 247-248 )

Groot, A.T., A. Schuurman, G.J.R. Judd, L.H.M. Blommers & J.H. Visser 1996.
Sexual behaviour of the green capsid bug Lygocoris pabulinus L. (Miridae): an introduction (p. 249-251 )

Vermunt, A.M.W., A.M.G. Vermeesch-Markslag & C.A.D. de Kort 1996.
Juvenile hormone esterase from hemolymph of the colorado potato beetle: isolation and characterization (p. 253-254 )