Orthoporus amulensis Pocock, 1910 accepted as
Orthoporus fraternus (De Saussure, 1860) (source of synonymy)
Orthoporus boreus Chamberlin, 1947 (additional source)
Orthoporus chiapasus Chamberlin, 1943 accepted as
Orthoporus striatulus Pocock, 1910 (additional source)
Orthoporus dybasi (Chamberlin, 1952) (new combination reference)
Orthoporus flavior Chamberlin & Mulaik, 1941 (additional source)
Orthoporus morelus Chamberlin, 1943 accepted as
Orthoporus fraternus (De Saussure, 1860) (additional source)
Orthoporus punctilliger Chamberlin, 1923 accepted as
Orthoporus ornatus (Girard, 1853) (source of synonymy)
Orthoporus striatulus Pocock, 1910 (additional source)
Orthoporus teapensis Pocock, 1910 (additional source)
Orthoporus texicolens Chamberlin, 1938 (additional source)
Orthoporus vallicolens Chamberlin, 1943 accepted as
Orthoporus ornatus (Girard, 1853) (source of synonymy)
Orthoporus victorianus Chamberlin, 1943 accepted as
Orthoporus texicolens Chamberlin, 1938 (source of synonymy)
Orthoporus wichitanus Chamberlin, 1931 accepted as
Orthoporus ornatus (Girard, 1853) (source of synonymy)
Spirostreptus fraternus (Saussure, 1860) accepted as
Orthoporus fraternus (De Saussure, 1860) (additional source)
