Distribuição e ocorrência de moscas-varejeiras de importância forense foi realizada durante 2007 e 2008 nas províncias de Chiang Mai e Lampang, norte da Tailândia. Os levantamentos foram feitos em áreas de florestas, durante 30 minutos usando rede de varredura para coletar as moscas atraídas por iscas. Um total de 2115 moscas-varejeiras pertencentes a seis gêneros e 14 espécies foram coletados; Chrysomya megacephala(Fabricius) (44,7%), C. pinguis(Walker) (15,1%), C. chani Kurahashi (9,3%), C. thanomthini Kurahashi & Tumrasvin (0,3%); Achoetandrus rufifacies(Macquart) (10,5%), A. villeneuvi(Patton) (2,2%); Lucilia papuensisMacquart (2,2%), L. porphyrina(Walker) (12,4%), L. sinensisAubertin (0,7%); Hemipyrellia ligurriens(Wiedemann) (1,3%), H. pulchra(Wiedemann) (0,1%); Hypopygiopsis infumata (Bigot) (0,6%), Hy. tumrasvini Kurahashi (0,2%) e Ceylonomyia nigripes Aubertin (0,4%). Dentre elas a C. megacephala foi a espécie predominante coletada particularmente no verão. As espécies capazes de predominar nas áreas altas são: C. pinguis, C. thanomthini, Hy. tumrasvini, L. papuensis e L. porphyrina.

Distribution and occurrence of blow flies of forensic importance was performed during 2007 and 2008 in Chiang Mai and Lampang Provinces, northern Thailand. Surveys were conducted in forested areas for 30 minutes using a sweep net to collected flies attracted to a bait. A total of 2,115 blow flies belonging to six genera and 14 species were collected; Chrysomya megacephala (Fabricius) (44.7%), C. pinguis (Walker) (15.1%), C. chani Kurahashi (9.3%), C. thanomthini Kurahashi & Tumrasvin (0.3%); Achoetandrus rufifacies (Macquart) (10.5%), A. villeneuvi (Patton) (2.2%); Lucilia papuensis Macquart (2.2%), L. porphyrina (Walker) (12.4%), L. sinensis Aubertin (0.7%); Hemipyrellia ligurriens(Wiedemann) (1.3%), H. pulchra(Wiedemann) (0.1%); Hypopygiopsis infumata (Bigot) (0.6%), Hy. tumrasvini Kurahashi (0.2%) and Ceylonomyia nigripes Aubertin (0.4%). Among them, C. megacephala was the predominant species collected, particularly in the summer. The species likely to prevail in highland areas are C. pinguis, C. thanomthini, Hy. tumrasvini, L. papuensis and L. porphyrina.

BACKGROUND: Although tropical climate of Thailand is suitably endowed with biodiversity of insects, flies of medical importance is not well investigated. Using information from literature search, fly survey approach and specialist's experience, we review database of Sarcophaga (Liosarcophaga) dux Thomson (Diptera: Sarcophagidae), one of the priorities flesh fly species of medical importance in Thailand. RESULTS: This review deals with morphology, bionomics and medical involvement. Important morphological characteristics of egg, larva, puparia and adult were highlighted with illustration and/or micrographs. Search pertaining to molecular analysis used for fly identification and developmental rate of larvae were included. Medical involvement of larvae was not only myiasis-producing agent in humans and animals, but associated with human death investigations. CONCLUSIONS: This information will enable us to accurate identify this species and to emphasis the increase medically important scene in Thailand.

Este es el primer estudio que, en México, analiza la dispersión espacial de larvas carroñeras en etapa de post alimentación a partir de un cadáver humano. Los restos de una persona hispana del sexo masculino de 70 años de edad se colocaron al aire libre el 8 de noviembre de 2008. Se instalaron 77 trampas al nivel del suelo, con una separación de 50 cm entre ellas; cubriendo un área de 4 x 4 m. Las larvas de moscas se colectaron por la mañana durante nueve días consecutivos a partir de observación de dispersión, la cual se inició el día 12 desde que el cadáver se dejó en el campo. La mayoría de las larvas en post-alimentación pasaron a etapa de adulto. Tanto larvas como adultos se identificaron a nivel de especie. De los 8.439 especímenes colectados Lucilia sericata fue la más común con 6.844, seguida de Calliphora coloradensis con sólo 718. Otras especies encontradas pero menos representadas fueron Cochliomyia macellaria, C. minima y Phormia regina. El patrón de dispersión es agregado y no homogéneo.

This is the first study performed in Mexico that analyzes the spatial dispersion of postfeeding larvae using human carrion. The remains of a 70 years old Hispanic male were set in an open area the 8th of November 2008. A total of 77 traps were set at ground level separated 50 cm apart of each other and spread along an area of 4 x 4 m. The larvae were collected in the morning along nine days 12 days after the body was leaved in place. Most of the post-feeding larvae molt into adults. Both larvae and adults were identified to the species level. Lucilia sericata was the more common species with 6,844 specimens out of the 8,439 collected; Calliphora coloradensis was the second with just 718 larvae captured. Other species found were Cochliomyia macellaria, C. minima and Phormia regina. The dispersal pattern was aggregated and not homogeneous.