Featured Articles
The ecological effects of burning, mowing, and plowing on ground-inhabiting spiders (Araneae) in an old-field ecosystem
Ecology and behaviour in Portia schultzii, with notes on related species (Araneae, Salticidae)
Mother-young relationships in Euscorpius: Adaptive value of the larval permanence on the mother's back
A revision of the spider genus Sason Simon (Sasoninae, Barychelidae, Mygalomorphae) and its historical biogeography
Spectral sensitivities of the eyes of the orb web spider Argiope argentata (Fabricius)
Analisis de la actividad diaria de Aphonopelma seemanni (Araneae, Theraphosidae) en Costa Rica
Redefinition of the genus Olpiolum and description of a new genus Banksolpium (Pseudoscorpionida, Olpiidae)
Mygalomorph spiders in the Barychelidae (Araneae) from Costa Rica
Albinism and eye structure in an Australian scorpion, Urodacus yaschenkoi (Scorpiones, Scorpionidae)
Research Notes
Las citas de Pachylus chilensis para la Argentina (Opiliones, Gonyleptidae, Pachylinae)
A range extension of the purseweb spider Sphodros rufipes (Latreille) in eastern Kansas (Araneae, Atypidae)
Vertical copulation can occur in Lycosa malitiosa Tuligren (Araneae, Lycosidae)
Chromosomes of Leiobunum japonicum japonicum and Leiobunum paessleri (Arachnida, Opiliones)
Ontogenetic changes in the web of Epeirotypus sp. (Araneae, Theridiosomatidae)
Possible parthenogenesis in the huntsman spider Isopoda insignis (Araneae, Sparassidae)
Web structure and burrow location of Spohodros niger (Hentz) (Araneae, Atypidae)
Pre-courtship cohabitation of mature male and penultimate Geolycosa turricola (Araneae, Lycosidae)
A new spider host association for Mantispa viridis (Neuroptera, Mantispidae)
Use of pheromones by males of Phiddipus johnsoni (Araneae, Salticidae) to detect subadult females that are about to molt
Ummidia trapdoor spider caught in a Steatoda web (Araneae: Ctenizidae Theridiidae)
Heteronebo vachoni and Heteronebo muchmorei are synonyms (Scorpiones, Diplocentridae)