Ultramorphological Characteristics and Development Time of Immature Stages of Piophila casei (Diptera: Piophilidae)

Karine Brenda Barros-Cordeiro, Welinton Ribamar Lopes, Sônia Nair Báo


Abstract. Piophila casei (Linneus), known as the cheese skipper fly, is a sarcosaprophagous dipteran, meaning it has a wide range of feeding habits: proteins, decaying animal and vegetable matter, and feces. The biological aspects of P. casei are relevant to several fields, including forensic entomology and human and veterinary medicine. This work presents the ultrastructure characteristics of P. casei, compares the structures present during its development using light microscopy and Scanning Electron Microscopy (SEM) and reports the development time of eggs, larvae and pupae under controlled laboratory conditions (23°C, 60% relative humidity and 12 h of light). Colony of adults previously maintained in the laboratory (third generation) was used in this study. The morphology of the insect and of structures such as the cephalopharyngeal skeleton, the anterior and posterior spiracles and the structures and organs of the head, thorax and abdomen of the first, second and third instar larvae were characterized. The total development time of the egg from laying until the emergence of the adult was 448 hours (18.66 days); this included 8 hours for embrionary development, 248 hours for larval development and 192 hours for pupal development.

Ultraestrutura e tempo de desenvolvimento de estágios imaturos de Piophila casei (Linneus)

Resumo. Piophila casei (Linneus), conhecida como “cheese skipper fly”, é uma mosca sarcosaprófaga, possui habito alimentar diverso. Pode alimentar-se de proteínas diversas, matéria animal e vegetal em decomposição e fezes. Os aspectos biológicos de P. casei são relevantes principalmente para a entomologia forense, medicina humana e veterinária. Este trabalho apresenta características da ultraestrutura de P. casei, comparando as estruturas dos três instares larvais do desenvolvimento, utilizando microscopias de luz e eletrônica de varredura (MEV), além de descrever o tempo de desenvolvimento de ovos, larvas e pupa sob condições controladas de laboratório (23 °C, 60% humidade relativa e 12 h de luz). A morfologia geral do inseto e estruturas como o esqueleto cefalofaríngeo, os espiráculos anterior e posterior,  as estruturas e órgãos da cabeça, tórax e abdômen da larva de primeiro, segundo e terceiro instares foram caracterizadas. O tempo total de desenvolvimento de ovo até a emergência do adulto foi de 448 horas (18,66 dias), sendo 8 horas para desenvolvimento embrionário, 248 horas para desenvolvimento larval e 192 horas para desenvolvimento pupal.


Cheese Skipper Fly; Forensic Entomology; Larvae; Medical-Veterinary; Morphology; Entomologia Forense; Larva; Medico-Veterinário; Morfologia; Mosca do Queijo

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DOI: http://dx.doi.org/10.12741/ebrasilis.v11i3.808


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