1991 358 p., numerous figures, 4to, paperbound.Includes 18 papers of which 15 on insects: Araneae, Collembola, Homoptera, Lepidoptera, Coleoptera, Diptera (Ceratopogonidae, Mycetophilidae, Tabanidae, Bombyliidae, Dolichopodidae, Drosophilidae, Muscidae, Tachinidae).