Genus Guyanacaris Sakai, 2011

Guyanacaris Sakai, 2011: 119 –120 [type species Calocaris (Calastacus) hirsutimana Boesch & Smalley, 1972, by original designation, gender feminine]

Neoaxius Sakai, 2017: 504 –505 [type species Neoaxius nicoyaensis Sakai, 2017, by original designation and monotypy, gender masculine]. Syn. nov.

Remarks. The synonymy of Neoaxius Sakai, 2017 is justified in the discussion of the species Guyanacaris caespitosa (Squires, 1979), below.