Eight new species of Dexosarcophaga Townsend, 1917 (Diptera, Sarcophagidae) from the Neotropical Region Author Santos, Josenilson Rodrigues dos D25D8258-3D2B-4327-88B3-62893BFCA2B3 Laboratório de Diptera Neotropicais, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, 20940 - 040, Rio de Janeiro, RJ, Brazil. & Postgraduate Program in Biological Sciences (Zoology), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. josenilsonrs@yahoo.com.br Author Pape, Thomas 1371BF99-D20A-47B9-BA9D-1F8D830A1B5A Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK- 2100 Copenhagen, Denmark. tpape@snm.ku.dk Author Mello-Patiu, Cátia Antunes de AFC308BA-1CBA-4AD4-AAD3-78E1B2F2F255 Laboratório de Diptera Neotropicais, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, 20940 - 040, Rio de Janeiro, RJ, Brazil. text European Journal of Taxonomy 2022 2022-07-12 828 109 137 http://dx.doi.org/10.5852/ejt.2022.828.1857 journal article 94516 10.5852/ejt.2022.828.1857 366b5c2a-9772-48c9-88a9-5b676abe76e6 2118-9773 6823730 DF138EE3-B825-4980-8BB5-3C03C53B7428 Dexosarcophaga napo sp. nov. urn:lsid:zoobank.org:act: 7D291A80-C95E-4B05-A495-2BFC055F6FA6 Figs 8E–F , 11 Diagnosis Vein R 1 setulose. Male: scutellum without apical setae; pregonite with distal part curved and with a spine-like projection ( Fig. 11D ); vesica stick-like in lateral view, extremities enlarged in ventral view ( Fig. 11D–E ); juxta mostly membranous and almost squared ( Figs 8F , 11D ). [Female unknown.] Etymology The species epithet ‘ napo ’ should be treated as a noun in apposition. The name refers to the province (named after the Río Napo ) of the type locality of the new species. Material examined Holotype ECUADOR • ♂ ; Napo Province , Yasuní National Park , Yasuní Research Station ; 00º38′ S , 76º36′ W ; Nov. 1998 ; T. Pape and B. Viklund leg.; NHRS [lost]. Paratypes ECUADOR • 4 ♂♂ : same collection data as for holotype; NHRS [lost] . Description Male (n=5) Length: 5–7 mm . Differs from D. phoenix sp. nov. as follows: Frons about 0.28 × head width at level of ocellar triangle; 5–8 well-developed frontal setae reaching level of apex of pedicel; gena and genal groove with slightly yellowish-silver pollinosity ( Fig. 8E ); first flagellomere approximately 4× as long as pedicel; thorax with slightly yellowish-silver pollinosity ( Fig. 8E ); acrostichals 3 (weakly differentiated) +1; dorsocentrals 3 (anteriormost shorter) + 3 (well differentiated); intra-alars 2 +2; meral setae 5–7; vein R 1 setulose; third costal sector setulose ventrally; abdomen dark brown, with slightly yellowish-silver pollinosity ( Fig. 8E–F ); T4 with 1–2 pairs of lateral marginal setae; row of about 10 marginal setae on T5; short incision along inner margin of ST5 and arms with pad-shaped protrusion ( Fig. 11A ); cercal prongs convergent in posterior view and truncated in lateral view ( Fig. 11B–C ); pregonite as long as postgonite, apical half curved and with spine-like projection ( Fig. 11D ); ventral margin of basiphallus with projection ( Fig. 11D ); vesica stick-like in lateral view and apically enlarged in ventral view ( Fig. 11D–E ); juxta mostly membranous and almost squared ( Fig. 11 D-E); median stylus tube-like with developed projection, shorter than lateral stylus, and with narrow apex ( Fig. 11D–E ); lateral stylus tube-like, with base twisted towards ventral margin of paraphallus ( Fig. 11D–E ). Fig. 11. Dexosarcophaga napo sp. nov. , ♂, holotype (NHRS [lost]). A . Sternite 5, ventral view. B . Syntergosternite 7 +8, epandrium, cercus and surstylus, lateral view. C . Cerci, posterior view. D . Phallus and associated structures, lateral view. E . Distiphallus, ventral view. Abbreviations: see Material and methods. Scale bars =0.1 mm. Female Unknown. Distribution Ecuador ( Napo ). Remarks Dexosarcophaga napo sp. nov. is morphologically similar to Dexosarcophaga inaequalis Lopes, 1975 . Males of both species have a stick-like vesica in lateral view ( Fig. 11D ; Silva & Mello-Patiu 2010: figs 53–54) and paraphallus with a projected lobe ventrally ( Fig. 11D ; Silva & Mello-Patiu 2010: figs 53–54). These two species can be differentiated by the following features: basiphallus with a conspicuous projection at ventral margin ( Fig. 11D ), projected lobe of paraphallus pointing distally in lateral view ( Fig. 11D ), and median stylus with a developed projection ( Fig. 11D–E ) in Dexosarcophaga napo sp. nov. , versus basiphallus without a conspicuous projection at ventral margin (Silva & MelloPatiu 2010: fig. 53), projected lobe of paraphallus pointing ventrally in lateral view (Silva & MelloPatiu 2010: figs 53–54), and median stylus without a developed projection (Silva & Mello-Patiu 2010: figs 54–55) in Dexosarcophaga inaequalis .