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

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Pattonella (Peckia) chrysostoma


Peckia (Peckia) chrysostoma ( Wiedemann, 1830) 

( Figs 20 View Figure , 37–38 View Figure , 69–74 View Figure )

Description of female terminalia. Posterior margin of T5 elliptical, brown, with golden microtrichosity dorsally and gray microtrichosity laterally ( Figs 72–74 View Figure ). 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 View Figure ). Epiproct triangular, covered with long setae. Cercus covered with long and fine setae. Hypoproct covered with long and fine setae ( Fig. 70 View Figure ). 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 View Figure ). Spermathecae globular, with parallel grooves restricted to distal half and a small rounded chamber where they receive the spermathecal duct ( Fig. 71 View Figure ).

Material examined. BRAZIL. Amapá: Macapá , 28.I.2007, on pig carcass, leg. R. Nonato (1 ♂, MPEGAbout MPEG)  ; Macapá , 23.X.1978, leg. M.F. Torres (1 ♂, MPEGAbout MPEG)  . Pará: Belém , 5.II.1974, leg. I.S. Gorayeb (1 ♂, MPEGAbout MPEG)  ; Belém , Centro /11 andar [= 11th floor], 6.VI.1993, leg. M.C. Esposito (1 ♂, MPEGAbout MPEG)  ; Belém, Faz. [= farm] Velha , 25.I.1979, leg. A.F. Ramos (1 ♂, MPEGAbout MPEG)  ; Belém, Serraria, VII.1970, leg. T. Pimentel (1 ♂, MPEG); Benevides, Fazenda [= farm] Morelândia , 7.VII.1988, leg. J. Dias (1 ♂, MPEGAbout MPEG)  ; Mosqueiro , 13–18.XI.1956, leg. E. Lobato (1 ♂, MPEGAbout MPEG)  ; I.G. Imbaúba, Baixo Rio Xingú , 25.XI.1983, leg. B. Mascarenhas (1 ♂, MPEGAbout MPEG)  ; Peixe Boi , 15.IV.1977, leg. M.F. Torres (1 ♂, MPEGAbout MPEG)  ; Ponta de Pedras , 29.X.1982, leg. M.F. Torres (1 ♂, MPEGAbout MPEG)  ; São João de Pirabas , 27.VII.1978, leg. M.F. Torres (1 ♂, MPEGAbout 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 ♂, MPEGAbout MPEG)GoogleMaps  .

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 View Figure , 93 View Figure , 99 View Figure ). The posterior margin of ST7 of P. (P.) pexata  has no setae ( Fig. 93 View Figure ), which are present on ST 7 in P. (P.) chrysostoma  ( Fig. 69 View Figure ). Peckia (P.) uncinata  can be distinguished from P. (P.) chrysostoma  in having posterior margin of ST8 folded ( Fig. 99 View Figure ), whereas in P. (P.) chrysostoma  it is flattened ( Fig. 69 View Figure ).

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 View Figure ) together with the common, large, habitual specimens with cercus not particularly elongate and only slightly curved ventrally ( Fig. 38 View Figure ).

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  ).


Museu Paraense Emilio Goeldi