A catalogue of the soft-scale insects of the world (Homoptera: Coccoidea: Cocidae) with data on geographical distribution, host plants, biology and economic importance. This catalogue lists 162 genera comprising 1090 species and subspecies which have been described since Linnaeus (1758) until the cutoff date of December 1991. Extensive data are presented on taxonomy, nomenclature, synonyms, geographical distribution, host plants, biology, and economic importance of the species. New combinations are established for 40 species. One species, namely Filippia subterranea Gomez-Menor Ortega, is newly synonymized with Lecanopsis formicarum Newstead.

Oribatid mites are ancient, minute arthropods that live in soil, plant litter, mosses and lichens, and on trees and shrubs. Prior to the production of this catalogue, Australian Oribatid mites had been poorly documented. This catalogue summarises our knowledge of the fauna of Australian Oribatid mites, including many new records of species and genera. It forms a fundamental resource for anyone interested in these important organisms and their role in soil ecology and as environmental indicators.

The Catalogue of Palaearctic Coleoptera provides information about all beetles occurring in Europe, North Africa and Asia north of the tropics.

A comprehensive work covering the about 100,000 species of Coleoptera known to occur in the Palaearctic Region. The complete work is planned for 8 volumes that will be published in intervals of about 18 months. The information provided for each species will be the following: • Primary taxonomic information of all available names in the genus and species levels published by the end of 1999. • The taxonomic information below subfamily will be organized alphabetically. • The type species of genera and subgenera, incl. synonyms, are given. • The area covered also includes the Arabian Peninsula, Himalayas and China. • The distributional data of species and subspecies is given per country. • Detailed distributional information for strict endemics is given. • Introduced species are indicated. The catalogue is a collective work of about one hundred coleopterists from Europe, Japan, America and Australia.