Loxosceles willianilsoni sp. n., habitus. 62 specimen walking inside Casa de Pedra cave 63 female 64 male 65 carapace pattern, male. Photos 62, 64 C. S. Fukushima; 63, 65 R. Bertani.

 
 
  Part of: Fukushima CS, Andrade RMG, Bertani R (2017) Two new Brazilian species of Loxosceles Heinecken & Lowe, 1832 with remarks on amazonica and rufescens groups (Araneae, Sicariidae). ZooKeys 667: 67-94. https://doi.org/10.3897/zookeys.667.11369