Pine processionary Pine processionary The pine processionary ("Thaumetopoea pityocampa") is a moth of the family Thaumetopoeidae. Sometimes placed in the genus "Traumatocampa", it is one of the most destructive species to pines and cedars in Central Asia, North Africa and the countries of southern Europe. The urticating hairs of the caterpillar larvae cause harmful reactions in humans and other mammals. The species is notable for the behaviour of its caterpillars, which overwinter in tent-like nests high in pine trees, and which proceed through the woods in nose-to-tail columns, protected by their severely irritating hairs, as described by the French entomologist Jean-Henri Fabre.
Health Hazard Evaluation Program Health Hazard Evaluation Program The Health Hazard Evaluation (HHE) program is a workplace health program administered by the National Institute for Occupational Safety and Health (NIOSH). NIOSH developed the HHE program to comply with a mandate in the Occupational Safety and Health Act of 1970 to investigate workplace health hazards reported by employers and employees. According to Section 20(a)(6) of the Act, the Secretary of Health and Human Services is authorized "following a written request by any employer or authorized representative of employees, to determine whether any substance normally found in the place of employment has potentially toxic effects in