By Dr. Gerhard Eisenbeis, Dr. Wilfried Wichard (auth.)
From the Foreword: "Anyone who has glimpsed a pattern of soil animals, particularly the soil arthropods, in the course of the binocular microscope won't ever put out of your mind the fascination in their ample shapes and constructions ... electron microscopy has further one other size which multiplies the preliminary fascination. whilst I glance through this "atlas" my realization is many times stuck via the various photographs. ... the richness of shape and serve as of the soil arthropods has proved to be an inexhaustible resource of organic curiosity. The authors ... exhibit this in a praiseworthy demeanour. ...This atlas bargains each instructor the potential for quickly acquiring an summary and therefore compiling the main vibrant educating fabric. ... ultimately, the index deals easy accessibility to every person point of the topic to people who are prompted to review further."
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Additional info for Atlas on the Biology of Soil Arthropods
It still lives from yolk reserves, is helpless and hardly mobile. The chelicerae still lack a poison duct and the spinnerets have no spinning tubes. There are one to three larval stages. e Nymphal stage with fully developed external structures such as chelicerae, spinnerets and sensory hairs. The genitalia are non-functional. There are five to ten nymphal stages, then moulting to an adult (sexually mature) Plate 11. Pirata uliginosus (Lycosidae), wolf spiders. a Cocoon with pore zone. 5 mm. b Silk mesh of the outer wall.
30 I I 20 10 I : I J J I \ I I \\ \ \ Fig. 39. Microclimate in the biotope of the wolf spider Pirata piraticus (Lycosidae). On the surface of the peat moss cushion the circadian temperature variation is approx. +8° to +38°C (dotted curve). In the interior of the moss cushion, where the tubular web is situated, the temperature fluctuates only slightly around 20°C (continuous curve). When it is sunny females expose their egg sacs to the sunshine at the entrance of their tubular web. (After N0fgaard, 1951, and Foelix, 1979) Plate 10.
D Epigastric fold with epigyne (arrow). The arrowheads mark areas with actively secreting, glandular hairs. m. e Spinnerets and anal tubercle. m. f Slender spinning tubes together with long setae of a posterior spinneret. 11 Care of the Young The Egg Sac Before laying her eggs the female wolf spider begins to make a cocoon, usually in the following sequence. First, a basic web is woven which is reinforced towards a central basal plate. This plate is formed into a bowl-shaped egg container by adding a ring wall.
Atlas on the Biology of Soil Arthropods by Dr. Gerhard Eisenbeis, Dr. Wilfried Wichard (auth.)