Dexosarcophaga sphaera, 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 : 125-129

Dexosarcophaga sphaera sp. nov.

urn:lsid:zoobank.org:act:E5DD7085-DF04-4E1F-BDFD-BFA0BEE94A79

Figs 8B–D , 9–10

Diagnosis

Vein R 1 bare. Male: scutellum with a pair of reduced apical setae; vesica like a small sclerotized plate ( Fig. 9D–E ); juxta like a narrow band ( Fig. 9D–E ). Female: the two halves of T8 widely separated by at least four times the width of cercus, each half pointed in its median part ( Fig. 10A–B ).

Etymology

The species epithet ‘ sphaera ’ should be treated as a noun in apposition. The name is a Latin noun ‘ sphaera ’, meaning ‘ball’ and alluding to the spherical paraphallus.

Material examined

Holotype BRAZIL • ♂; Roraima, Surumu ; Sep. 1966; M. Alvarenga leg.; MNRJ [lost].

Paratypes BRAZIL • 1 ♂: same collection data as for holotype; MNRJ [lost] • 2 ♂♂; Minas Gerais, Uberlândia, Clube Caça e Pesca Itororó , Cerrado Campo Sujo ; 18º58′59.48″ S, 48º17′50″ W; 24 Jul. 2005; J. Mendes leg.; MNRJ [lost] • 1 ♂; Pernambuco, Tamandaré ; R.F.R. Carmo leg.; MNRJ [lost] • 1 ♂, 4 ♀♀; Brasília, Distrito Federal, Fazenda Vargem Bonita ; 29 Jul. 1968; R. Kano leg.; MNRJ [lost] • 1 ♂; Brasília , Distrito Federal; alt. 1000 m; 15–30 May 1957; Barros-Albuquerque leg.; MNRJ [lost] .

Description

Male (n=7)

Length: 6–9 mm. Differs from D. phoenix sp. nov. as follows:

Frons about 0.18 × head width at level of ocellar triangle; 7–10 well-developed frontal setae reaching level of apex of pedicel; gena and genal groove with slightly yellowish-silver pollinosity ( Fig. 8B ); first flagellomere approximately 4× as long as pedicel; thorax with slightly yellowish-silver pollinosity ( Fig. 8B ); intra-alars 2+2; meral setae 8–11; scutellum with pair of reduced apical setae; abdomen dark brown, with slightly yellowish-silver pollinosity ( Fig. 8B ); T4 with 2 pairs of lateral marginal setae; row of about 12 marginal setae on T5; inner margin of ST5 without lobes or an incision but with elongate pad-shaped protrusion ( Fig. 9A ); cercal prong rounded in lateral view ( Fig. 9B ); surstylus almost triangular ( Fig. 9B ); pregonite as long as postgonite ( Fig. 9D ); postgonite with long seta inserted near the slightly dilated anterobasal corner ( Fig. 9D ); vesica in lateral view in shape of small sclerotized triangular plate ( Fig. 9D–E ); juxta like narrow band ( Fig. 9D–E ); median stylus narrow, as long as lateral stylus ( Fig. 9D–E ); lateral stylus with base expanded towards ventral margin of paraphallus and equipped with spines apically ( Fig. 9D–E ).

Female (n =4)

Length: 6–9 mm; frons about 0.29 × head width at level of ocellar triangle; scutellum without apical setae; T5 with 10 marginal setae; T8 divided into two large and bare halves, widely separated by at least 4 × as wide as cercus, each half pointed in its median part ( Fig. 10A–B ); ST2–5 with one pair of long setae ( Fig. 10A ); ST5 almost square ( Fig. 10A ); ST6–8 fused ( Fig. 10A–B ); ST7 about 2× as long as ST6 ( Fig. 10A–B ); ST8 rounded ( Fig. 10A–B ); epiproct membranous, without setae ( Fig. 10A–B ); vaginal plate sclerotized ( Fig. 10A–B ).

Distribution

Brazil (Distrito Federal, Minas Gerais, Pernambuco, Roraima).

Remarks

Dexosarcophaga sphaera sp. nov. is similar to D. globulosa Lopes, 1946 . Males of both species have paraphallus with a pointed projection on distal half and juxta like a narrow band ( Fig. 9D–E ; Mello 1996: figs 16, 18). These two species can be differentiated by the following features: postgonite with long seta inserted near a slightly dilated region in anterobasal corner ( Fig. 9D ), vesica short ( Fig. 9D– E ), and elongated lateral and median styli ( Fig. 9D–E ) in D. sphaera sp. nov., versus postgonite with long seta inserted near a slightly dilated region in anteroapical corner ( Mello 1996: figs 13–14), vesica conspicuous ( Mello 1996: figs 16–17), and short lateral and median styli ( Mello 1996: figs 16, 18) in D. globulosa .

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. 9. Dexosarcophaga sphaera sp. nov., ♂, paratype (MNRJ [lost]), Brazil, Minas Gerais, Uberlândia. 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. 10. Dexosarcophaga sphaera sp. nov., ♀, paratype (MNRJ [lost]), Brazil, Brasília, Distrito Federal, Fazenda Vargem Bonita). A. Terminalia and abdominal sternites, ventral view. B. Terminalia, ventral view. C. Spermatheca, lateral view. Abbreviations: see Material and methods. Scale bars=0.1 mm.