Abstract
The pentatomoid family Cyrtocoridae Distant 1880 is revised. The family occurs only in the Neotropics, from Argentina north through central Mexico. Several features ally the family with others grouped around the Cydnidae. Other features, including those of the nymphs' tergal plates, the venation of both wings, and the placement of the abdominal trichobothria, confirm the familyrank status of Cyrtocoridae. We recognize the following 4 genera and 11 species: Ceratozygum horridum (Germar), Cyphothyrea erosa Horvath, Cyrtocoris andicola Horvath, C. egeris new species, C. gibbiis (F.), C. montanus Horvath, C. obtusus Horvath, C. paraensis Piran, C. simplex Horvath, C. trigonus (Germar), and Pseudocyrtocoris laceratus (Herrich-Schaeffer). Cyphothyrea bridarollii Kormilev is synonymized with laceratus ; and Cyrtocoris subobtusus Kormilev is synonymized with C. trigonus . All descriptions are from type material. Dimorphism of the paraclypei in male Ceratozygum horridum is described and discussed (1 form resembles the female; in the other, the paraclypei are greatly extended forward).
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