Terrestrial gastropods of Reserva Florestal Humaitá, southwestern Brazilian Amazon Author de Lima, Marcos Silva Author Silva, Fernanda dos Santos Author Simone, Luiz Ricardo Lopes Author Salvador, Rodrigo Brincalepe Author Guilherme, Edson text Check List 2021 2021-02-22 17 1 269 281 http://dx.doi.org/10.15560/17.1.269 journal article 10.15560/17.1.269 1809-127X Habroconus mayi (F.C. Baker, 1913 ) Figure 5O–Q Guppya mayi Baker 1913: 632 , pl. 21, figs. 6, 7. Material examined. Brazil • Acre , Porto Acre , HFR; 09° 45′54″S , 067°68′34″W; 12.I.2017 ; M. Lima leg.; 2, UFAC 715 . Identification. The present specimens were collected in 2017, on a trip previous to the actual main collection effort. They can be identified by their delicate, brown, translucent, conical shell, which lacks a strong angulation on the body whorl ( Baker 1913 ). This record, the first from Acre , extends the species distribution circa 250 km to the west. Genetic data. CO1, MW 033970 ; 16S, MW 035046 ; ITS2+28S, MW 045521 ; from voucher specimen UFAC 715. Type locality. Camp 39, 284km above Porto Velho( Rondônia state ) along Madeira-Mamoré Railroad, Brazil . Distribution. Northern Rondônia state and possibly southern Amazonas state, Brazil ( Simone 2006 ).