The Journal of Arachnology, Vol. 18, No. 3 (Autumn, 1990), pp. 263-269 (7 pages) The fitness of Frontinella pyramitela (Walckenaer) (Araneae, Linyphiidae) is, by definition, a function of its lifetime ...

1. The Linyphiid spider Frontinella communis changes its orientation from random with respect to the sun (Fig. 1A) to aligned with the rays of the sun (Fig. 1B) on days when both insolation and ...

This paper provides the first numerical cladistic analysis of erigonine phylogenetic relationships based on a sample of taxa. A total of 73 characters, most of them morphological, have been scored for ...