Taxonomic review of the species of Helina R. - D. (Diptera: Muscidae) from Andean-Patagonian forests Author Patitucci, Luciano Damián Author Mulieri, Pablo Ricardo Author Mariluis, Juan Carlos text Zootaxa 2016 4150 3 281 313 journal article 10.11646/zootaxa.4150.3.3 e98edafd-7489-488d-ab8a-276a4a4926a4 1175-5326 265618 79657D7A-324F-4539-A80F-E11BB4189753 Helina viola Malloch, 1934 ( Fig. 15 E) For a complete list of references, see the catalog by Carvalho et al. (2005) . Information subsequent to this catalog: Löwerberg-Neto et al . 2011 (biogeography); Löwerberg-Neto & Carvalho 2013 (checklist). Remarks . Malloch (1934) described H. viola from a single female specimen from Lago Gutierrez, Río Negro , Argentina . This species is distinguished from other Helina species recorded in the region by the metallic coloration. We have not included the redescription of this species because we did not observe or collect any specimen. Biology . Unknown. Distribution ( Fig. 15 E). ARGENTINA . Rio Negro .