Carolina Mantis (Stagmomantis carolina: Mantidae) Adults range from 4.7-6.0 cm (1.9-2.4 in) long. You talk about rude, both sexes engages in cannibalism if the opportunity presents itself. This one apparently wants her belly scratched (lol). Along Rio Rico Road, Mercedes, Hidalgo County, Texas, USA. Converted Rio Grande Floodplain into agricultural fields with patches of native vegetation at ca. 20 m (66 ft) elevation.