Dexosarcophaga napo, Santos & Pape & Mello-Patiu, 2022

Santos, Josenilson Rodrigues dos, Pape, Thomas & Mello-Patiu, Cátia Antunes de, 2022, Eight new species of Dexosarcophaga Townsend, 1917 (Diptera, Sarcophagidae) from the Neotropical Region, European Journal of Taxonomy 828, pp. 109-137 : 129-131

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 ).

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 .

Figures

Fig. 8. Dexosarcophaga spp., ♂ and ♀, habitus and terminalia. A. Dexosarcophaga petra sp. nov., ♂, paratype (MNRJ [lost]), Brazil, Mato Grosso, Chapada dos Guimarães, terminalia, lateral view. B–D. Dexosarcophaga sphaera sp. nov., paratypes (MNRJ [lost]), Brazil, Brasília, Distrito Federal, Fazenda Vargem Bonita. B. ♂, habitus, lateral view. C. ♂, terminalia, lateral view. D. ♀, terminalia, ventral view. E–F. Dexosarcophaga napo sp. nov., ♂, paratype (NHRS [lost]), Ecuador, Napo Prov. E. Habitus, lateral view. F. Terminalia, lateral view. Scale bars =1.0 mm.

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.