Heterorotula lucasi sp. nov. from the Pigeon River, Tennessee (type locality) A crenulated margins and miceospines of rotules and gemmulosclers B variation in size and spines of gemmuloscleres. Scale bars: 30 μm (B); 20 μm (A).

 
 
  Part of: Manconi R, Copeland J, Kunigelis S, Pronzato R (2022) Biodiversity of Nearctic inland water: discovery of the genus Heterorotula (Porifera, Spongillida, Spongillidae) in the Appalachian Mountains, with biogeographical implications and description of new species. ZooKeys 1110: 103-120. https://doi.org/10.3897/zookeys.1110.79615