What are commonly referred to as centipedes and what seem to be visible in the posted photo really do not do serious damage to indoor plants. However, their presence does suggest the use of a potting mix that is non-sterile and may have other problems for the plant. Soil-based potting mixes are often too dense for indoor plants and may contain other contaminants that can adversely affect indoor plants. The centipedes may get the blame because they are visible, but any problems that develop are probably due to other less visible issues with the potting mix.
