Stylaria lacustris, showing elongate prostomial proboscis, eyes, and typical chaetae: A photo of anterior end (scale 500 µm) B drawing of dorsal “hair” C drawing of dorsal “needle” D drawing of ventral chaeta.

 
 
  Part of: Worsham MLD, Gibson R, Huffman DG (2016) The aquatic annelid fauna of the San Marcos River headsprings, Hays County, Texas. ZooKeys 618: 1-14. https://doi.org/10.3897/zookeys.618.8560