First record of Peckia ( Sarcodexia ) lambens ( Wiedemann , 1830 ) ( Diptera : Sarcophagidae ) parasitizing Spodoptera frugiperda ( Smith , 1797 ) ( Lepidoptera : Noctuidae ) in Brazil Primeiro registro de Peckia ( Sarcodexia ) lambens ( Wiedemann , 1830 ) ( Diptera : Sarcophagidae ) parasitando Spo

Arq. Inst. Biol., v.84, 1-4, e0302016, 2017 RESUMO: Coletas de larvas de Spodoptera frugiperda (Smith, 1797) (Lepidoptera: |Noctuidae) realizadas no campo em três localidades da cidade de Campo Grande, Mato Grosso do Sul, Brasil, entre outubro de 2012 e março de 2014, registraram a presença de três espécies de Diptera como parasitoide de S. frugiperda: duas espécies de Tachinidae, Archytas incertus (Macquart, 1851) e Winthemia trinitatis Thompson, 1963, e uma espécie de Sarcophagidae, Peckia (Sarcodexia) lambens (Wiedemann 1830), sendo esta identificada pela primeira vez no país como parasitoide larval de S. frugiperda.

Spodoptera frugiperda (Smith, 1797) is the major pest of maize crops in Brazil and the Americas.Intense infestation of fall armyworm larvae can cause significant losses in grain production.According to VALICENTE; TUELHER ( 2009 In tropical systems, despite their great biodiversity, there is a lack of basic studies on taxonomy of insect pests and their natural enemies (MOLINA-OCHOA et al., 2003).The identification of the organisms associated with an agroecosystem is the first step in pest management (PRATISSOLI et al., 2010).Since the biodiversity may vary in different agroecosystems and it can be used to improve pest management (ALTIERI; NICHOLLS, 2004), it justifies the importance of the first record of P. (S.) lambens parasitizing S. frugiperda in the state of Mato Grosso do Sul, Brazil.
From October 2012 to March 2014, we collected eight larval samples of S. frugiperda in maize crops in three localities in the city of Campo Grande, state of Mato Grosso do Sul, Brazil: in the maize research field belonging to "Agência de Desenvolvimento Agrícola e Extensão Rural-AGRAER", in the Universidade Católica Dom Bosco campus (UCDB), and in a farm near the District of Rochedinho.
Fall armyworm larvae collected in the field were taken to the Entomological Laboratory of the UCDB, where they were separated individually within test tubes (diameter 2.5 cm × 8.5 cm high) and bred with artificial diets, following GREENE et al. (1976).Adult tachinids were identified according to GUIMARÃES (1961) and COELHO et al. (1989), and the single specimen of Sarcophagidae was identified according to BUENAVENTURA; PAPE (2013) and CARVALHO; MELLO-PATIU ( 2008).Vouchers will be housed in the Zoological Collection of the Universidade Federal de Mato Grosso do Sul (UFMS) and in the Diptera Collection of the Museum of Zoology of the Universidade de São Paulo (MZUSP).
Achytas incertus and W. trinitatis have been recorded parasitizing S. frugiperda in maize crops in Brazil (MOLINA-OCHOA et al., 2003).Studies on their biology and their interspecific relationship with S. frugiperda can be found in several works (MILWARD-DE-AZEVEDO et al., 1991;ANDRADE et al., 2008;SILVA et al., 2010), suggesting the potential use of these species in the biological control of the fall armyworm larvae in pest management.
Peckia (S.) lambens (Fig. 1) differs from these two species of Tachinidae by having the abdominal sternites exposed and overlapping the tergite margins, notopleuron with more than two setae and subscutellum not well-developed.Since this species shows intraspecific variation in its thoracic and abdominal chaetotaxy, it is important to confirm the identification by examination of the male genitalia.Peckia (S.) lambens is known as parasitizing many Lepidoptera pest, Alabama argillaceae (Hübner, 1823), Oiketicus kirbyi (Gulding, 1827), Mocis latipes (Guenée, 1852), Diatrea saccharalis (Fabricius, 1794) (BLANCHARD, 1963).Although P. (S.) lambens is considered a facultative  , 2004), it was one of the main larval and pupal parasitoids of Hylesia metabus (Cramer, 1775) in Venezuela (HERNÁNDEZ et al., 2009).Peckia (S.) lambens parasitizing S. frugiperda have been recorded from the Lesser Antilles (FENNAH, 1947) and Honduras (MAES, 1989;CAVE, 1993), but there is no record of this parasitism from Brazil.The identification of the potential components which may interact in the larval control of S. frugiperda is important, and the record of parasitism of S. frugiperda by P. (S.) lambens in the state of Mato Grosso do Sul adds new information to this regional agroecosystem.