Ansie dippenaar (2 risultati)

Soft cover. Condizione: Fine. 1st Edition. Pliable wraps. 304pp. profusely illus. in colour. Scarce.

Hardcover. Condizione: Good. 2007 Koninklijk Museum voor Midden-Afrika scarce hardcover edition. Some reading wear, some waviness to pages likely caused by humidity else good condition. From the cover: Spiders are of major importance in ecosystems and are recognized as effective natural control agents in agroecology. Nearly 40,000 species of spiders have been described but the actual number of species is expected to be many times higher. This book provides a concise overview and descriptions of the 107 spider families that are presently recognized. It contains identification keys to the families and to the different kinds of spider webs, and shortcuts to remarkable types of spiders. The book fills a gap that has existed for a long time since the previous such overview dates back from more than a century. Both authors of this book are professional arachnologists who have devoted most of their careers to the study of spiders, both from a biological/agroecological and a taxonomic perspective.…