Distribution: United States: AR, AZ, CA, CO (Ruckes 1946b, Sailer 1952, Kumar et al. 1976), IA, KS (Sailer 1952), MN (Koch et al. 2014), MO, ND (Rider 2012), NM, OK, SD, TX, UT (Knowlton 1936, Sailer 1952, Thomas & Werner 1981). (Mexico, Central America, South America)
Comments: See comments under Mecidea major. Knowlton (1936) recorded Mecidea longula from Utah, which Sailer (1952) referred to this species.