The cognitive consequences of forming implementation intentions in controlling fear were addressed in the present study. Participants with an intense fear of spiders evaluated pictures of spiders, pleasant pictures, and neutral pictures under cognitive load. Regulatory control was measured by participants' self-report ratings of the pictures on the Self-Assessment Manikins Scales. Only particip...

We explore the artificial life domain which opens new horizons to find bio-inspired solutions to image processing problems. Besides the ants which were successfully used, we investigate a new approach based on the interaction of social spiders, where we adapt the collective web weaving to an image segmentation on regions. Spiders were successfully used to extract regions on grey level images. W...

Spiders are often found as residents in association with Sarracenia purpurea (Purple Pitcher Plant). Many spiders choose web locations based on environmental cues such as vegetation structure and composition, prey density, temperature, and humidity. To determine if spiders use cues from the Purple Pitcher Plant to build their webs, we conducted a field study using variants of the plant that sep...

Linyphiidae Blackwall, 1859 is the second most specious family of spiders, with 4807 species currently recognized in 632 genera (WSC, 2023). An extensive survey spiders conducted during 1988–2006 Gaoligong Mountains and adjacent areas Yunnan Province revealed about 110 belonging to 53 genera, including seven new 76 (Irfan et al., 2022).

Australian crab spiders Thomisus spectabilis manipulate visual flower signals to lure introduced Apis mellifera. We gave Australian native bees, Austroplebia australis, the choice between two white daisies, Chrysanthemum frutescens, one of them occupied by a crab spider. The colour contrast between flowers and spiders affected the behaviour of native bees. Native bees approached spider-occupied...

We compared the abundance of spiders and predaceous insects in five central California vineyards. Spiders constituted 98.1% of all predators collected. More than 90% of all spiders collected were from eight species of spiders, representing six families. Two theridiids (Theridion dilutum and T. melanurum) were the most abundant, followed by a miturgid (Cheiracanthium inclusum) and an agelinid (H...

Assassin bugs (Stenolemus bituberus) hunt web-building spiders by invading the web and plucking the silk to generate vibrations that lure the resident spider into striking range. To test whether vibrations generated by bugs aggressively mimic the vibrations generated by insect prey, we compared the responses of spiders to bugs with how they responded to prey, courting male spiders and leaves fa...

Molecular spiders are synthetic molecular motors based on DNA nanotechnology. While natural molecular motors have evolved towards very high efficiency, it remains a major challenge to develop efficient designs for man-made molecular motors. Inspired by biological motor proteins such as kinesin and myosin, molecular spiders comprise a body and several legs. The legs walk on a lattice that is coa...

KNOWLEDGE OF THE SPIDERS of the Pacific is largely the result of the work of Berland (1934, et. seqq.). He has published a number of papers dealing with the spiders of the New Caledonian and New Hebridean region; of Samoa; and of the Marquesas, Society, and Austral groups, and other islands in the southeastern Pacific. Recently I have completed a study of the spiders of Western Samoa (not yet p...

At night the Namib Desert spider Leucorchestris arenicola performs long-distance homing across its sand dune habitat. By disabling all or pairs of the spiders' eight eyes we found that homing ability was severely reduced when vision was fully abolished. Vision, therefore, seems to play a key role in the nocturnal navigational performances of L. arenicola. After excluding two or three pairs of e...