University of Nebraska-Lincoln Department of Entomology; brown recluse; Loxosceles reclusa; yellow sac spider; Cheiracanthium spp.; yellow sac spider; Cheiracanthium spp.; parson spider; Herpyllus ecclesiasticus; brown recluse; Loxosceles reclusa; brown recluse; Loxosceles reclusa; brown recluse; Loxosceles reclusa; brown recluse; Loxosceles reclusa; Western black widow; Latrodectus hesperus; sac spider; Trachelas tranquillus; yellow sac spider; Cheiracanthium spp.; brown recluse; Loxosceles reclusa; bark crab spider; Xysticus spp.; brown recluse; Loxosceles reclusa; Western black widow; Latrodectus hesperus; hobo spider; Tegenaria agrestis; brown recluse; Loxosceles reclusa; brown recluse; Loxosceles reclusa; Western black widow; Latrodect...