In the following paper descriptions are presented for three apparently undescribed species of Arctocorixa. Notes are included on some additional species and a redescription presented for Corisella tumida (Uhler).

Arctocorixa bicoloripennis n. sp.

Male.—Length 5.75 mm. Form and color pattern simulating A. penniensis Hungfd. but size a little smaller. Head short, vertex from above broadly arcuate continuous with margin of eyes. Width of vertex posteriorly between eyes equal to its median length. Face with a weak concavity extending dorsally slightly beyond lower margin of eyes and with greatest width distinctly less than interocular space. Inner margins of eyes only very slightly diverging ventrally. Post-ocular space narrow. Head with a few fine punctures and a few fine pale hairs, surface minutely coriaceous, shining. Antennae with apical segment slender, two-thirds as long as subapical segment.