Udamopyga, Hall, 1938

Santos, Josenilson Rodrigues Dos & Mello-Patiu, Cátia Antunes De, 2018, Review of the Brazilian species of Udamopyga Hall, 1938 (Diptera: Sarcophagidae), with the description of a new species and a key to males and females, Zootaxa 4508 (1), pp. 1-27 : 24

Key to adult males and females of Udamopyga from Brazil

1. Proclinate orbital setae absent (males)..................................................................... 2

- Proclinate orbital setae present (females)................................................................... 8

2. Juxta wider than long, rounded in lateral and ventral views, with squamous ornamentation ( Figs 10–11 ); vesica with two rounded lobes and inner ventral margin as ladle-shaped projections............ U. squamata Santos & Mello-Patiu sp. nov.

- Juxta longer than wide, rectangular or sub-rectangular in lateral view without squamous ornamentation ( Figs 21 , 25 , 30 ); vesica with inner ventral margin not as ladle-shaped projections.................................................... 3

3. Three postsutural dorsocentral setae; vesica with conspicuous lateroventral spinose ornamentation and inner ventral margin as two spinose projections ( Figs 21–22 )......................................................... U. diversa Lopes

- Four postsutural dorsocentral setae; vesica ornamentation and inner ventral margin not as above....................... 4

4. Juxtal lobes with lateral projections ( Figs 35–36 , 39–40 )...................................................... 5

- Juxtal lobes without lateral projections ( Figs 25–26 , 30–31 ).................................................... 6

5. Vesica rounded with a central, convex and well-delimited membranous area; juxta with latero-posterior rounded flaps (ventral view) ( Figs 3 , 35 )....................................................................... U. percita (Lopes)

- Vesica rounded, with a poorly-delimited membranous central area; juxtal lobes with latero-anterior membranous projections ( Fig. 39 ).............................................................................. U. provecta (Lopes)

6. Lobe-shaped arms of vesica with striated ornamentation ( Figs 4–6 , 44–45 , 51 )................... U. setigena (Enderlein)

- Lobe-shaped arms of vesica with spinose ornamentation or without ornamentation ( Figs 25 , 30 )....................... 7

7. Distal half of cercal prong almost straight in lateral view; juxtal lobes with a concave depression on the distal margin; lobeshaped arms of vesica with spinose ornamentation ( Figs 25–26 , 47 )............................. U. malacophila Lopes

- Distal half of cercal prong slightly curved anteriorly in lateral view; juxtal lobes with a slightly convex dilatation on the distal margin; lobe-shaped arms of vesica without ornamentation ( Figs 30–31 , 48 )........................... U. neivai Lopes

8. T6 with a longitudinal crease along midline dorsally and roof-like appearance ( Figs 53–54 )........................... 9

- T6 convex along midline dorsally, without a longitudinal crease ( Figs 55–56 )..................................... 11

9. ST5 as long as wide ( Fig. 12 ).......................................... U. squamata Santos & Mello-Patiu sp. nov.

- ST5 longer than wide................................................................................. 10

10. T6 yellowish-brown, with a well-marked longitudinal crease; epiproct absent ( Fig. 53 )............. U. malacophila Lopes

- T6 reddish-brown, with a less marked longitudinal crease; epiproct with two pairs of setae ( Fig. 54 )........ U. neivai Lopes

11. Three postsutural dorsocentral setae.......................................................... U. diversa Lopes

- Four postsutural dorsocentral setae....................................................................... 12

12. T6 with conspicuous golden setulae along posterior margin ( Fig. 56 ).............................. U. provecta (Lopes)

- T6 without golden setulae along posterior margin........................................................... 13

13. T6 opening, i.e., posterior border, forming a concave curve in ventral view; epiproct absent ( Fig. 55 )..... U. percita (Lopes)

- T6 opening, i.e., posterior border, forming a somewhat sub-quadrangular or inverted U-shaped curve in ventral view; epiproct with two pairs of setae ( Fig. 57 )........................................................ U. setigena (Enderlein)

Figures

FIGURES 7–11. Udamopyga squamata sp. nov., male paratype (MNRJ). 7. Sternite 5, ventral view. 8. Syntergosternite 7+8, epandrium, cercus and surstylus, lateral view. 9. Cerci, posterior view. 10. Phallus and associated structures, lateral view. 11. Distiphallus, ventral view. Abbreviations: ce, cercus; im, inner ventral margin of vesica; ju, juxta; ls, lateral stylus; ms, median stylus; po, postgonite; pp, paraphallus; pr, pregonite; su, surstylus; ve, vesica; wd, window. Scale bars = 0.2 mm.

FIGURES 18–22. Udamopyga diversa Lopes, male from Linhares (MNRJ). 18. Sternite 5, ventral view. 19. Syntergosternite 7+8, epandrium, cercus and surstylus, lateral view. 20. Cerci, posterior view. 21. Phallus and associated structures, lateral view. 22. Distiphallus, ventral view. Abbreviations: ce, cercus; im, inner ventral margin of vesica; ju, juxta; ls, lateral stylus; ms, median stylus; po, postgonite; pp, paraphallus; pr, pregonite; su, surstylus; ve, vesica. Scale bars = 0.2 mm.

FIGURES 23–26. Udamopyga malacophila Lopes, male from Linhares (MNRJ). 23. Epandrium, cercus and surstylus, lateral view. 24. Cerci, posterior view. 25. Phallus and associated structures, lateral view. 26. Distiphallus, ventral view. Abbreviations: ce, cercus; im, inner ventral margin of the vesica; ju, juxta; ls, lateral stylus; ms, median stylus; po, postgonite; pp, paraphallus; pr, pregonite; su, surstylus; ve, vesica. Scale bars = 0.2 mm.

FIGURES 27–31. Udamopyga neivai Lopes, male from Grajaú (MNRJ). 27. Sternite 5, ventral view. 28. Epandrium, cercus and surstylus, lateral view. 29. Cerci, posterior view. 30. Phallus and associated structures, lateral view. 31. Distiphallus, ventral view. Abbreviations: ce, cercus; im, inner ventral margin of vesica; ju, juxta; ls, lateral stylus; ms, median stylus; po, postgonite; pp, paraphallus; pr, pregonite; su, surstylus; ve, vesica. Scale bars = 0.2 mm.

FIGURES 32–36. Udamopyga percita (Lopes), male from Guarapari (MNRJ). 32. Sternite 5, ventral view. 33. Epandrium, cercus and surstylus, lateral view. 34. Cerci, posterior view. 35. Phallus and associated structures, lateral view. 36. Distiphallus, ventral view. Abbreviations: ce, cercus; im, inner ventral margin of vesica; jf, latero-posterior flap of juxta; ju, juxta; ls, lateral stylus; ms, median stylus; po, postgonite; pp, paraphallus; pr, pregonite; su, surstylus; ve, vesica. Scale bars = 0.2 mm.

FIGURES 37–40. Udamopyga provecta (Lopes), male from Nova Teutônia (MNRJ). 37. Syntergosternite 7+8, epandrium, cercus and surstylus, lateral view. 38. Cerci, posterior view. 39. Phallus and associated structures, lateral view. 40. Distiphallus, ventral view. Abbreviations: ce, cercus; im, inner ventral margin of vesica; jp, latero-anterior membranous projection of juxta; ju, juxta; ls, lateral stylus; ms, median stylus; po, postgonite; pp, paraphallus; pr, pregonite; su, surstylus; ve, vesica. Scale bars = 0.2 mm.

FIGURES 1–6. SEM images of male distiphalli of Udamopyga Hall spp. 1–3. Udamopyga percita (Lopes), specimen from Linhares (MNRJ). 1. Lateral view. 2. Ventral view. 3. Apico-dorsal view. 4–6. Udamopyga setigena (Enderlein), specimen from Nova Teutônia (MNRJ). 4. Lateral view. 5. Ventral view. 6. Dorsal view. Abbreviations: im, inner ventral margin of vesica; ju, juxta; ls, lateral stylus; ms, median stylus; pp, paraphallus; ve, vesica. Scale bars = 100 µm.

FIGURES 41–45. Udamopyga setigena (Enderlein), male from Salobra (MNRJ). 41. Sternite 5, ventral view. 42. Epandrium, cercus and surstylus, lateral view. 43. Cerci, posterior view. 44. Phallus and associated structures, lateral view. 45. Distiphallus, ventral view. Abbreviations: ce, cercus; im, inner ventral margin of vesica; ju, juxta; ls, lateral stylus; ms, median stylus; po, postgonite; pp, paraphallus; pr, pregonite; su, surstylus; ve, vesica. Scale bars = 0.2 mm.

FIGURES 46–51. Male terminalia of Udamopyga Hall spp., lateral view. 46. Udamopyga diversa Lopes (specimen from Guarapari, MNRJ). 47. Udamopyga malacophila Lopes (paratype, MNRJ). 48. Udamopyga neivai Lopes (paratype, MNRJ). 49. Udamopyga percita (Lopes) (specimen from Guarapari, MNRJ). 50. Udamopyga provecta (Lopes) (specimen from Dourados, MNRJ). 51. Udamopyga setigena (Enderlein) (paratype, MNRJ). Scale bars = 0.5 mm.

FIGURES 52–57. Female terminalia of Udamopyga Hall spp., posterior view. 52. Udamopyga diversa Lopes (allotype, MNRJ). 53. Udamopyga malacophila Lopes (specimen from Linhares, MNRJ). 54. Udamopyga neivai Lopes (paratype, MNRJ). 55. Udamopyga percita (Lopes) (specimen from Guarapari, MNRJ). 56. Udamopyga provecta (Lopes) (paratype, MNRJ). 57. Udamopyga setigena (Enderlein) (paratype, MNRJ). White arrows point to T6, green arrows point to discal concavity on ST7. Scale bars = 0.5 mm.

FIGURES 12–13. Udamopyga squamata sp. nov., female paratype (MNRJ). 12. Terminalia and abdominal sternites, ventral view. 13. Terminalia and one spermatheca, ventral view (arrow points to discal concavity). Abbreviations: ce, cercus; hy, hypoproct; sp, spiracle; ST, sternite; T, tergite. Scale bars = 0.5 mm.