Registered users receive a variety of benefits including the ability to customize email alerts, create favorite journals list, and save searches.
Please note that a BioOne web account does not automatically grant access to full-text content. An institutional or society member subscription is required to view non-Open Access content.
Contact firstname.lastname@example.org with any questions.
After a short review of the literature, beginning with the discovery of the nuptial gift of the nursery-web spider Pisaura mirabilis (Clerck, 1757) in 1884 by Van Hasselt, the courtship, mating, agonistic behaviour, and peaceful coexistence of a female with two males in a planted terrarium are described (Table 1). Details of the normal mating process with a wrapped fly of different sizes are given (Figs. 3–10). Copulations occurred during both day and night. Eyesight seems to be of little importance for recognition of sexes and the gift, apart from perceiving movements. Mating variations using a freshly caught unwrapped fly (Lucilia) (Figs. 11–12), a small fly (one Drosophila), a wrapped substitute (heather blossom, Fig. 13) and even without any gift (Figs. 14–15, 23) are shown (Table 4). Males can even perform successfully with females with prey or egg sacs and on nursery webs. Agonistic behaviour, gift robbery, disturbance of mating by a rival, a threesome with one female and two males, but also peaceful male-male encounters are described and illustrated (Figs. 16–23, Table 3). Intersexual aggression and sexual cannibalism are demonstrated and discussed. The so-called “feigning death” of males (Fig. 8) is considered as an evolutionarily stable trick of the male to maintain contact with the female within the dense layer of the herbaceous stratum if she suddenly runs away after a disturbance, or simply for recovering the gift. This behaviour also occurs when two males share one gift (Fig. 22) and try to copulate with each other (Fig. 19). The benefits and disadvantages of the different kinds of gifts, evolution of the gift, its functions and the degree of cannibalism are discussed. Comparisons with the mating behaviour of related Pisauridae and Trechaleidae species using gifts and silk in courtship are made, and suggestions for further research are given.
A new Southern African Pterinochilus species, P. lapalala sp. n., is described, illustrated and diagnosed from its congeners. The available distribution data suggest this species is limited to the Waterberg mountains of Limpopo Province and appears to demonstrate some degree of habitat specialisation. It represents the most southerly recorded Pterinochilus species.
The sparassid spider Olios suavis (O. Pickard-Cambridge, 1876) is reported from Europe for the first time, based on a specimen from Cyprus. A brief description of the male specimen from Cyprus is provided, together with figures of the genitalia of both sexes. Figures of the genitalia of O. argelasius (Walckenaer, 1805), the only other European Olios species, are also given, and the distinguishing characters of the two species are outlined.
We describe and figure a new species of the genus SchismatotheleKarsch, 1879 from Brazil, Amazonas state, to the north of Manaus. This species comprises the first male known for the genus and the first report of the genus Schismatothele for Brazil. The new species differs from the only known species, Schismatothele lineataKarsch, 1879 in the morphology of the spermathecae in which the dorsal receptacles have internal tubular digitiform lobules.