{"data":{"id":"us/40-cfr-158.1726","jurisdiction":"us","citation":"40 CFR 158.1726","heading":"Spiders.","body":"(a) General. The table in this section applies to spiders. The product labeling claim determines the required test species. The required test species for spider labeling claims appear in paragraph (b) of this section.\n(b) Test species. For products making a claim against spiders, the test species for labeling claims appear in the following table.\nTable 1 to Paragraph (b)—Required Test Species for Products Making a Claim Against Spiders\nLabeling claim Required test species\nPest Group Claim\nSpiders Testing on two species is required: Brown recluse spider (Loxosceles reclusa).\nAND One of the following species is required: Northern black widow spider (Latrodectus variolus) OR Southern black widow spider (Latrodectus mactans) OR Western black widow spider (Latrodectus hesperus).\nPest Sub-Group Claims\nBlack Widow Spiders Testing on one of the following species is required: Northern black widow spider (Latrodectus variolus) OR Southern black widow spider (Latrodectus mactans) OR Western black widow spider (Latrodectus hesperus).\nPest-Specific Claims\nBrown recluse spider Brown recluse spider (Loxosceles reclusa).\nBrown widow spider Brown widow spider (Latrodectus geometricus).\nNorthern black widow spider Northern black widow spider (Latrodectus variolus).\nSouthern black widow spider Southern black widow spider (Latrodectus mactans).\nWestern black widow spider Western black widow spider (Latrodectus hesperus).","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER E—PESTICIDE PROGRAMS","PART 158—DATA REQUIREMENTS FOR PESTICIDES","Subpart R—Product Performance for Products Claiming Effectiveness Against Invertebrate Pests"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"29a8dd4b38995d5f8683a5a7bd2816e1ea97608d10ebffa8546012dacdb0b920","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-158.1722","next":"us/40-cfr-158.1732"},"notice":"GroundRules: Original legal text. Not legal advice."}