Dexosarcophaga pallida, 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 : 131-133

Dexosarcophaga pallida sp. nov.

urn:lsid:zoobank.org:act:65C1F210-E75B-4A8A-A85E-F4704CB39D21

Figs 12–13

Diagnosis

Vein R 1 bare. Male: scutellum without apical setae; vesica narrow at base and expanded at apex in ventral view ( Fig. 12E ); juxta strongly membranous, smooth and not differentiated from paraphallus ( Fig. 12D–E ). [Female unknown.]

Etymology

The species epithet ‘ pallida ’ should be treated as a noun in apposition. The name is a Latin adjective ‘ pallida ’ (= Latin), meaning ‘pale’, and alluding to the light apex of the distiphallus.

Material examined

Holotype COLOMBIA • ♂; Caquetá, Chiribiquete National Park , W Campamento; alt. 840 m; 26 Nov. 1992; G. Andrade-C leg.; NHRS [lost].

Paratype COLOMBIA • 1 ♂; same collection data as for holotype; NHRS [lost] .

Description

Male (n=2)

Length: 5–6 mm. Differs from D. phoenix sp. nov. as follows:

Frons about0.30 × head width at level of ocellar triangle; 7–9 well-developed frontal setae reaching level of apex of pedicel; gena and genal groove with slightly yellowish-silver pollinosity ( Fig. 13A ); acrostichals 3 (weakly differentiated) + 1; dorsocentrals 4 (anteriormost shorter) +3 (two minor anterior); intra-alars 2+ 2; meral setae 5–7; abdomen dark brown, with slightly yellowish-silver pollinosity; T4 with 1–2 pairs of lateral marginal setae; row of about 10 marginal setae on T5; marginal setae of ST2–4 slightly differentiated from discal setae; short median incision at posterior margin of ST5 ( Fig. 12A ); surstylus slightly curved ( Fig. 12B ); vesica narrow at base and expanded at apex in ventral view ( Fig. 12E ); juxta arching over acrophallus, strongly membranous, smooth and not clearly differentiated from paraphallus ( Fig. 12D–E ); median stylus narrow and with apical spines ( Fig. 12D–E ); lateral stylus equipped with strong spines apically and base curved towards ventral margin of paraphallus ( Fig. 12D–E ).

Female

Unknown.

Distribution

Colombia (Caquetá).

Remarks

Dexosarcophaga pallida sp. nov. is morphologically similar to Dexosarcophaga currani Dodge, 1968 . Males of both species have a stick-like vesica in lateral view ( Fig. 12D ; Mello-Patiu 2002: figs 53, 56) and a membranous projection from the ventral part of the paraphallus at the level of the acrophallus ( Fig. 12D ; Mello-Patiu 2002: figs 53, 56). The latter projection may be formed by the paraphallus or be a composite of both the paraphallus and the juxta. These two species can be differentiated by the following features: vesica strongly bifurcated at apex ( Fig. 12E ) and lateral and median styli approximately ⅓ the length of paraphallus ( Fig. 12D–E ) in Dexosarcophaga pallida sp. nov., versus vesica slightly bifurcated at apex ( Mello-Patiu 2002: fig. 58) and lateral and median styli approximately ½ the length of paraphallus ( Mello-Patiu 2002: figs 53, 56–57) in Dexosarcophaga currani .

Figures

Fig. 12. Dexosarcophaga pallida 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.

Fig. 13. Dexosarcophaga pallida sp. nov., ♂, paratype (NHRS [lost]), Colombia, Caquetá, Chiribiquete National Park. A. Habitus, lateral view. B. Terminalia, lateral view.