Serpula himantioides due to a lack of any above ground symptoms of disease. Signs of the pathogen include basidiospores, and fungal masses that are generally dark brown and membranous in the center but become thin white mycelium towards edges of the mass. The brown cubical rot caused by "S. himantioides" resembles the rots of "Phaeolus schweinitzii" and "S. lacrymans". "Serpula himantiodes" is a pre-harvest pathogen that exerts economic impact on lumber supply. It is considered the wild sister species of "S. lacrymans", the pathogen that causes dry rot in wooden building structures. "S. himantioides" is studied most frequently in the context of
Serpula vermicularis tube is fabricated by the glandular ventral shields on the other thoracic segments, where calcium is mixed with an organic secretion to make a paste. This is formed into shape by a collar found just behind the first segment, the prostomium. "Serpula vermicularis" is a filter feeder and extends its radioles to catch phytoplankton and detritus. The radioles also act as gills. Blood is pumped in and out of these with the flow direction alternating in a single set of vessels. The blood is then pumped through a ventral blood vessel to the tip of the abdomen before returning through