nana nana (Fallén), 1820: 15 (Sciomyza) [Johnson 1925: 250] ST: 1♂ 1♀ Sweden, Esperöd. NHRS, unnumbered DIST: MEXICO (Baja California; Ciudad de México; Puebla: Huachinango; Tamaulipas). Also CANADA and UNITED STATES. The nominate subspecies, Ph. nana reticulata (Thomson), occurs throughout Europe. Map: Bratt et al. 1969 FIGS: Wulp 1897 (wing), Cresson 1920 (head, wing), Fisher & Orth 1983 (♂ terminalia), Foote et al. 1999 (wing), Foote & Keiper 2004 (habitus, wing), Knutson & Vala 2011 (wing), this paper (dorsal head) BIOL: Bratt et al. 1969. BG: 2; PG: 1 HOSTS/PREY OF LARVAE: In North America and Europe: freshwater (seven genera) and terrestrial (four genera) pulmonate snails [larvae and puparia in Galba humilis, Gyraulus parvus, Physa sp., and Stagnicola elodes (Bratt et al. 1969)] IMMATS: Bratt et al. 1969 (E, L1–L3, P) CHR: Boyes et al. 1969 (karyotype) MOL_DAT: Y transducta Walker, 1861: 320 (Sciomyza) [Steyskal 1965b: 686] HT:? “ United States.” NHMUK, unnumbered

Published as part of Murphy, William L., Abercrombie, Jay, González, Christian R. & Knutson, Lloyd, 2023, Overview of the Sciomyzidae (Diptera: Sciomyzoidea) of the Americas south of the United States, pp. 1-113 in Zootaxa 5345 (1) on page 19, DOI: 10.11646/zootaxa.5345.1.1, http://zenodo.org/record/8345756