Pattonella (Peckia) chrysostoma, (Wiedemann, 1830)

Camargo, Sofia Lins Leal Xavier De, Carvalho-Filho, Fernando Da Silva & Esposito, Maria Cristina, 2018, The genus Peckia Robineau-Desvoidy (Diptera: Sarcophagidae) in the Brazilian Amazon: a new species, new records, descriptions of female terminalia and key to species, Zootaxa 4483 (1), pp. 1-35 : 18-19

Peckia (Peckia) chrysostoma ( Wiedemann, 1830)

( Figs 20 , 37–38 , 69–74 )

Description of female terminalia. Posterior margin of T5 elliptical, brown, with golden microtrichosity dorsally and gray microtrichosity laterally ( Figs 72–74 ). T6 divided into two halves, brown, with golden microtrichosity and a row of setae near posterior margin. Spiracles 6 and 7 located on T6. T8 absent ( Fig. 69 ). Epiproct triangular, covered with long setae. Cercus covered with long and fine setae. Hypoproct covered with long and fine setae ( Fig. 70 ). ST6 square, covered with robust setae near posterior margin. ST7 rectangular, with setae restricted to posterolateral margin. ST8 wider than long, with short setulae and a pair of robust lateral setae near posterior margin ( Fig. 69 ). Spermathecae globular, with parallel grooves restricted to distal half and a small rounded chamber where they receive the spermathecal duct ( Fig. 71 ).

Material examined. BRAZIL. Amapá: Macapá , 28.I.2007, on pig carcass, leg. R. Nonato (1 ♂, MPEG) ; Macapá , 23.X.1978, leg. M.F. Torres (1 ♂, MPEG) . Pará: Belém , 5.II.1974, leg. I.S. Gorayeb (1 ♂, MPEG) ; Belém , Centro /11 andar [= 11th floor], 6.VI.1993, leg. M.C. Esposito (1 ♂, MPEG) ; Belém, Faz. [= farm] Velha , 25.I.1979, leg. A.F. Ramos (1 ♂, MPEG) ; Belém, Serraria, VII.1970, leg. T. Pimentel (1 ♂, MPEG); Benevides, Fazenda [= farm] Morelândia , 7.VII.1988, leg. J. Dias (1 ♂, MPEG) ; Mosqueiro , 13–18.XI.1956, leg. E. Lobato (1 ♂, MPEG) ; I.G. Imbaúba, Baixo Rio Xingú , 25.XI.1983, leg. B. Mascarenhas (1 ♂, MPEG) ; Peixe Boi , 15.IV.1977, leg. M.F. Torres (1 ♂, MPEG) ; Ponta de Pedras , 29.X.1982, leg. M.F. Torres (1 ♂, MPEG) ; São João de Pirabas , 27.VII.1978, leg. M.F. Torres (1 ♂, MPEG) ; Viseu, Fazenda [= farm] Ema , 52°21'29,6''S 01°25'13,5''W, 13–24.VI.2000, Malaise trap, pasture, leg. I.S. Gorayeb, J.O. Dias & R.N. Bittencourt (1 ♂, MPEG) .

Distribution in Brazil. Amapá, Amazonas, Bahía, Ceará, Distrito Federal, Maranhão, Minas Gerais, Paraná, Pernambuco, Pará, Santa Catarina, Rio de Janeiro, Roraima, São Paulo.

Remarks. The female terminalia of P. (P.) chrysostoma , P. (P.) pexata and P. (P.) uncinata share spiracles 6 and 7 both situated on T6 ( Figs 69 , 93 , 99 ). The posterior margin of ST7 of P. (P.) pexata has no setae ( Fig. 93 ), which are present on ST 7 in P. (P.) chrysostoma ( Fig. 69 ). Peckia (P.) uncinata can be distinguished from P. (P.) chrysostoma in having posterior margin of ST8 folded ( Fig. 99 ), whereas in P. (P.) chrysostoma it is flattened ( Fig. 69 ).

The shape of the male cercus of this species is highly variable, as previously mentioned by Lopes (1976), and some specimens within this range of variation were described as two new species by Lehrer (2006). In the Brazilian Amazon, we collected some small specimens (6.5–8.0 mm) with an elongate and sinuous, ventrally-curved cercus ( Fig. 20 ) together with the common, large, habitual specimens with cercus not particularly elongate and only slightly curved ventrally ( Fig. 38 ).

Peckia (P.) chrysostoma is one of the most common and widely distributed species in the genus, occurring in cities, secondary forests, and pristine forests of the Brazilian Amazon ( Sousa et al. 2011). One of us (FSCF) collected this species on the stinkhorn fungus (Phallus sp.; Phallales: Basidiomycota) and on flowers of Casearia sp. ( Salicaceae ).

Figures

FIGURES 11–20. Male terminalia of Peckia spp. 11–12. Peckia (Euboettcheria) collusor (Curran & Walley), specimen from Pará, Jari (MPEG). 11. Epandrium, surstylus and cercus in left lateral view; arrow points to preapical projection with tuft of setulae. 12. Cerci in dorsal view; arrow points to preapical projection with tuft of setulae. 13–14. Peckia (Euboettcheria) epimelia (Lopes), specimen from Pará, Jari (MPEG). 13. Epandrium, surstylus and cercus in left lateral view; arrow points to flat apical projection. 14. Cerci in dorsal view; arrow points to elongated basal projection with spines and setulae. 15. Peckia (Euboettcheria) tridentata (Hall), specimen from Pará, Jari (MPEG); epandrium, surstylus and cercus in left lateral view; arrow points to apical spines. 16. Peckia (Peckia) hillifera (Aldrich), specimen from Pará, Bragança (MPEG); distiphallus in left lateral view. 17. Peckia (Peckia) lutzi (Lopes), specimen from Pará, Bragança (MPEG); distiphallus in left lateral view. 18. Peckia (Peckia) uncinata (Hall), specimen from Pará, Serra Norte (MPEG); genital segments, cercus and surstylus in left lateral view. 19. Peckia (Peckia) pexata (Wulp), specimen from Pará, Jari (MPEG); cercus in left lateral view; arrow points to rounded projection. 20. Peckia (Peckia) chrysostoma (Wiedemann), specimen from Pará, Belém (MPEG); epandrium, surstylus and cercus in left lateral view. Scales bars = 0.5 mm. Abbreviation: jp = juxtal lateral plate.

FIGURES 35–38. SEM images of cerci and distiphalli of Peckia spp. 35–36. Peckia (Peckia) hillifera (Aldrich), specimen from Pará, Bragança (MPEG) 35. Cercus in left lateral view; arrow points to pointed projection. Scale bar = 150 µm. 36. Peckia (Peckia) uncinata (Hall), specimen from Pará, Serra Norte (MPEG); cerci in dorsal view; arrow points to spines. Scale bar = 100 µm. 37–38. Peckia (Peckia) chrysostoma (Wiedemann), specimen from Pará, Belém (MPEG). 37. Distiphallus in lateral view; arrow points to juxtal lateral plate. Scale bar = 100 µm. 38. Epandrium, surstylus and cercus in left lateral view. Scale bar = 200 µm.

FIGURES 69–74. Peckia (Peckia) chrysostoma (Wiedemman), female from Pará, Belém (MPEG). 69. Abdominal sternites and tergite 6 in ventral view. 70. Epiproct, cercus and hypoproct in apical view. 71. Spermatheca in lateral view. 72. Abdomen in posterior view. 73. Abdomen in dorsal view. 74. Abdomen in ventral view. Scale bars: 67 = 4 mm; 68–69 = 0.5 mm; 70–72 = 2 mm. Abbreviations: CE = cercus; EP = epiproct; HP = hypoproct; ST = sternite; T = tergite.

FIGURES 93–98. Peckia (Peckia) pexata (Wulp), female from Mato Grosso, Juína (MNRJ). 93. Abdominal sternites and tergite 6 in ventral view. 94. Epiproct, cercus and hypoproct in apical view. 95. Spermatheca in lateral view. 96. Abdomen in posterior view. 97. Abdomen in dorsal view. 98. Abdomen in ventral view. Scale bars: 91 = 3 mm; 92–93 = 0.5 mm; 94 = 1 mm; 95–96 = 2 mm. Abbreviations: CE = cercus; EP = epiproct; HP = hypoproct; ST = sternite; T = tergite.

FIGURES 99–104. Peckia (Peckia) uncinata (Hall), female from Mato Grosso, Juína (MNRJ). 99. Abdominal sternites and tergite 6 in ventral view. 100. Epiproct, cercus and hypoproct in apical view. 101. Spermatheca in lateral view. 102. Abdomen in posterior view. 103. Abdomen in dorsal view. 104. Abdomen in ventral view. Scale bars: 97, 100 = 1 mm; 98 = 0.5 mm; 99 = 0.25 mm; 101–102 = 2 mm. Abbreviations: CE = cercus; EP = epiproct; HP = hypoproct; ST = sternite; T = tergite.