Cartwrightia
Cartwrightia is a genus of scarab found in Latin America. It was named and circumscribed in 1958 by Federico Islas Salas. , three species are recognized: "C. intertribalis", "C. cartwrighti", and "C. islasi". They can be found in the nests of leafcutter ants or in dung. Taxonomic history. The Mexican entomologist Federico Islas Salas circumscribed the genus "Cartwrightia" in 1959 for his newly-described species "C. intertribalis". The generic name is in honor of the American entomologist Oscar Ling Cartwright. In 1967, Cartwright himself described two additional species in this genus: "C. islasi", whose specific name honors Islas, and "C.  cartwrighti", which Cartwright named after his brother. Taxonomy. "Cartwrightia" is in the subfamily Aphodiinae of the scarab family Scarabaeidae, although entomologists are not all in agreement as to which tribe it should be placed in. American entomologist has described this genus as "unusual", "distinct", and in need of additional study as to its taxonomic classification. Its characteristics are similar to those of various tribes, including: Eupariini, Odontolochini, and Rhyparini. In 1967, Cartwright wrote this genus "superficially appears most closely allied to "Rhyparus" in the tribe Rhyparina", but placed this genus in the tribe Eupariina. Others who have placed it in  Eupariina include the Italian entomologist , the American entomologist and the Canadian-Australian entomologist , Skelley, and Mexican entomologist . Description. Beetles in this genus are long and have elongate, somewhat flat bodies which are rufous in color. They have elongated mesocoxa and their mesothorax lateral sclerites are hidden. This genus is also characterized by bulbous formations at the posterior tips of their elytra and depressions on their pronotum. Distribution. "Cartwrightia" are found in Mexico, Central America, and South America. "C. intertribalis" have been found in Mexico, "C. islasi" have been found in Mexico, Guatemala, and El Salvador, and "C. cartwrighti" are found  throughout tropical South America. Biology. "Cartwrightia" species are myrmecophilous and ant inquilines. "C. islasi" have been found in the nest of the leafcutter ant "Atta cephalotes". "C. islasi" and "C. cartwrighti" have also been found in dung.