Revision of Neotropical Scelolabes Philippi (Diptera, Hybotidae, Ocydromiinae): two new species and a proposal of delimitation Author Barros, Luana Machado Postgraduate Program in Entomology (PPG-Ent), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil. barrosluana222@gmail.com Author Freitas-Silva, Rafael Augusto Pinheiro de CADE0CEE-4413-4919-BBA7-9B1AE962249A Postgraduate Program in Entomology (PPG-Ent), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil. rpfreitas.silva@gmail.com Author Ale-Rocha, Rosaly 5DAE3BCE-D4B5-4E32-9150-3EF239256451 Coordenação de Biodiversidade (COBIO, INPA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil. alerocha@inpa.gov.br text European Journal of Taxonomy 2023 2023-08-24 890 1 49 70 http://dx.doi.org/10.5852/ejt.2023.890.2251 journal article 264130 10.5852/ejt.2023.890.2251 1f706702-b0ac-4a0b-aa50-de9e77c92fdf 2118-9773 8283493 D3A00B64-844C-48C7-ADE5-6AB8E97F6A12 Identification key for Neotropical species of Scelolabes Philippi, 1865 1. Scutum with narrow black stripe restricted to intra-alar region ( Fig. 3F ); legs (males) covered by long, slender, and waved setae; hind femur with 2 rows of spine-like setae on ventral surface ( Fig. 3A ); left surstylus with long setae, as long as half-length of left surstylus ( Fig. 4E ) ................ .................................................................................................... Scelolabes bivittatus Philippi, 1865 – Scutum widely darkened, black stripe covering at least intra-alar and dorsocentral regions ( Figs 1F , 5D ); legs (males and females) covered by short and slender setae; hind femur without rows of spine-like setae on ventral surface, only long and strong ordinary setae ( Fig. 1A ); left surstylus with short setae, shorter than half-length of left surstylus ( Fig. 2E ) ................................................................. 2 2. Hind tibia arched ( Fig. 5E ); mediotergite yellow with two black stripes on lateral margins; antenna with scape and pedicel brown ( Fig. 5C ); hypandrium 2× as long as wide ( Fig. 6A ); dorsobasal process of right lamellae longer and slender ( Fig. 6B ) ....................... Scelolabes verasilvae sp. nov. – Hind tibia straight, not arched ( Fig. 1A ); mediotergite brown; antenna with scape and pedicel yellow ( Fig. 1D ); hypandrium as longer as wide ( Fig. 2A ); dorsobasal process of right lamellae shorter and wider ( Fig. 2B ) ....................................................................................... Scelolabes amorimi sp. nov.