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 ).