The isolation of the Hawaiian archipelago has resulted in a fauna that shows high levels of endemism. I examined the role of lifestyle, as inoltyferred from web-building versus non-web-building behavior, in dictating the rate of differentiation and species formation within a lineage of spiders in the genus Tetragnatha from the Hawaiian Islands. This genus comprises a group of morphologically, e...

Rates of metabolism of jumping and crab spiders were evaluated to determine if life-styl e characteristics are associated with rates of energy expenditure in these `sit-and-wait' predators . Resting rates of oxygen consumption were measured under standardized conditions in nine species of salticid and three species of thomisid spiders . These rates and those previously reported ranged from 50–7...

This study examined the endemic species of kleptoparasitic spiders in the genus Argyrodes from the Hawaiian Islands, a lineage previously known in the archipelago from only a single described species, Argyrodes hawaiiensis Simon. Here, two additional endemic species are described, A. ilipoepoe Rivera and Gillespie, n. sp., and A. laha Rivera and Gillespie, n. sp., with their biogeographical pat...

Agricultural intensification is the main cause of biodiversity loss in terrestrial ecosystems (IPBES, 2019). By harnessing ecosystem functions supported by biodiversity, agroecology aims to design agricultural landscapes that can maintain commodity production while preserving environment (Bommarco et al., 2013). Biological control crop pests their natural enemies a major service increase sustai...

The functional response study of the ten most common arthropod predators of cotton bollworm (Helicoverpa zea) eggs was conducted in the laboratory. Crab spider (Misumenops spp.) and assassin bug (Zelus renardii) did not consume any bollworm eggs under laboratory conditions and the scymnus lady beetle (Scymnus loewii) consumed very few (avg. 0.5 eggs per beetle) bollworm eggs in a 24-hour period...