First Record of Genus Xestocoris (Hemiptera-Heteroptera: Lygaeoidea: Rhyparochromidae: Rhyparochrominae: Lethaeini) from Mexico, with Description of Three New Species

The genus Xestocoris Van Duzee is reported from Mexico for the first time, and three new species, X. adustus (Guerrero, Morelos, Nayarit, and Puebla), X. clavatus (Chiapas, Guerrero, Michoacan, and Oaxaca), and X. punctatus (Chiapas), are described. Two species, X. collinus described from Guatemala and Panama, and X. tibialis from the United States, are newly recorded for Mexico. Habitus, illustrations, and drawings of the male genitalia are provided, and a key to the known Xestocoris species is presented.