Figure 1

Argyroneta aquatica , SEM-photos of a full-grown female. A. Dorsal view of the tightly haired abdomen (syn. opisthosoma) in contrast to the hairless cephalothorax (below only its posterior part with the insertion near the hind leg is shown). The little spots among the hairs on the abdomen represent glandular fields. - B. Detailed view of the dorsal abdomen covered with posteriorly inclined feathered hairs above a rippled cuticle, and with rounded area of glandular cells at the bottom of the photo. - C. Enlarged view on the field of adjacent feathered hairs. - D. Base of feathered hairs (with their barbules) arising from a socket in between the rippled cuticle.