Taxonomic review of New World Tachyina (Coleoptera, Carabidae): descriptions of new genera, subgenera, and species, with an updated key to the subtribe in the Americas Author Boyd, Olivia F. Author Erwin, Terry L. text ZooKeys 2016 626 87 123 http://dx.doi.org/10.3897/zookeys.626.10033 journal article http://dx.doi.org/10.3897/zookeys.626.10033 1313-2970-626-87 3DE781B6D48B432B97846703EA6B280B Taxon classification Animalia Coleoptera Carabidae Elaphropus (Ammotachys) marchantarius sp. n. Figs 1E, 2F, 3F, 4F, 5F Type material. Holotype: male (NMNH) with following label data: "BRAZIL/AM-(Rio Solimoes ) / Ilha de Marchantaria / 59°58'W 3°15'S ; Varzea / J. Adis leg. 22 I 1982". Paratypes: 8 (6 male, 2 female) in NMNH, ZSM from "BRAZIL/AM-(Rio Solimoes ) / Ilha de Marchantaria / 59°58'W 3°15'S ; Varzea / J. Adis leg. 1.10.81" [1♂, NMNH], "BRAZIL/AM-(Rio Solimoes ) / Ilha de Marchantaria / 59°58'W 3°15'S ; Varzea / J. Adis leg 20-2.[?] [handwritten] 1989A" // Lago Camaleao : light trap / 3.60 m above ground on / Macrolobium acaciifolium / leg. C Martius/A Rebello" [1♂, NMNH], handwritten label: "Jacareacanga / Para Brasie / XII-1968 / M. Alvarenga" [1♂, NMNH], "VENEZUELA, T.F.Amaz. / San Carlos de Rio / Negro, 23 Jan. 1985 / P. & P. Spangler, / R.Faitoute,W.Steiner" [1♂, NMNH], "LETICIA,Amazonas / Colombia 700 ft. / Feb.23-Mar.2/74 / H. & A. Howden" [2♂, UASM], "BRAZIL/AM-(Rio Solimoes ) / Ilha de Marchantaria / 59°58'W 3°15'S ; Varzea / J. Adis leg. 22.XII 1981[?]" [1♀, NMNH], "Jacare P.N.Xingu / M.Grosso- Bras. / XI.1961 / leg.M.Alvarenga" [1♀, ZSM]. Type locality. Brazil: Amazonas: Rio Solimoes , Ilha de Marchantaria, 59°58'W 3°15'S . Description. Size, form, color, microsculpture, head, prothorax, mesothorax, and distribution as in description of the subgenus. Derivation of specific epithet. The specific epithet marchantarius is a toponym referring to Ilha de Marchantaria, the collection locality of the majority of type material, located near Manaus, Brazil.