Ptilinus ramicornis is a species of beetle in the family Ptinidae, commonly known as spider beetles. It is part of the genus Ptilinus, which includes several species of wood-boring beetles typically associated with dead or decaying wood. Adult beetles of this species are generally small, ranging from 4 to 7 millimeters in length, and exhibit the elongated antennae and slender body typical of the genus.
The species is known primarily from specimens collected in forested regions of Europe. Larvae are likely to develop in dead hardwood or conifer wood, where they feed on wood fibers, although specific host plant associations and ecological preferences for P. ramicornis have not been extensively documented in the literature.
The taxonomic status of Ptilinus ramicornis is supported by entomological collections and published descriptions, though detailed biological and distributional data remain limited compared to other more commonly studied members of the family.
Accurate information on the life cycle, geographic range, and conservation status of this species is not confirmed.