A new species of snail-case caddisflies (Trichoptera: Helicopsychidae) and new records of caddisflies from Chapada Diamantina, Bahia, Brazil Author Souza, Raquel Lima De Author Gomes, Victor Author Calor, Adolfo R. text Zootaxa 2017 4227 3 347 358 journal article 37227 10.11646/zootaxa.4227.3.3 e25865bd-4ed0-4dbc-8163-f8085885092f 1175-5326 268336 B924CC1C-5CBE-402B-8F6C-7EB003EBAB39 Polyplectropus tragularius Chamorro-Lacayo & Holzenthal 2010 Material examined. BRAZIL : Bahia , Chapada Diamantina, Lençóis, Mucugezinho , Rio Mucugezinho , 29.x.2013 , UV light pan trap , Calor A.R. , Dias E. & Campos R. , 1 male (alcohol, UFBA ) . Distribution. Brazil (BA, ES, MG, SP) Schmid (1984) and Malicky (1993) estimated that the world caddisfly fauna may contain approximately 50,000 species. In this way, only about 20–25% of world species of caddisflies has been described (de Moor & Ivanov 2008 ). In Brazil , the number of caddisfly species has been increased in the last decades, but studies in some areas are still scarce. The Brazilian Northeast Region comprises 18% of the Brazilian territory, with around 1.6 Tm2, but only 120 species have been recorded, 40 of these in Bahia State. Here, 31 caddisfly species, including Helicopsyche ( F. ) catoles n. sp . , belonging to 14 genera and eight families were recorded from Chapada Diamantina , Bahia . Two of these previously described species constitute new records for Brazil [ Helicopsyche ( F. ) succincta and Marilia misionensis ] and another 10 of these species represent new records for Bahia [ Chimarra ( Curgia ) hyoeides , Macronema hageni , M. partitum , Polyplectropus tragularius , Smicridea ( Rhyacophylax ) coronata , S. ( R .) helenae , S. ( R .) iguazu , S. ( R .) jundiai , S. ( R .) radula , and Marilia major ].