Abstract
Baiting and flower watching mainly in forest habitats throughout Thailand (1997–2002) yielded 46 species of Sarcophaga Meigen. About 50% of the species are new to Thailand and several new to science. All 67 species of Sarcophaga so far reported from Thailand are listed and their taxonomic status and nomenclature updated. Emphasis on rearing (523 broods) ensured species identification through the male progeny of the otherwise mostly unidentifiable females, and allowed several new correct male–female associations, besides offering new insights into the flies' breeding strategies. Three natural larviposition habits were observed in the wild: (1) on faeces of carnivorous and omnivorous, but not herbivorous, mammals (coprobiodotic), e.g. S. africa (Wiedemann), S. albiceps Meigen, S. misera Walker; (2) on cadaver (necrobiodotic), e.g. S. krathonmai Pape and Bänziger, S. nathani (Lopes), S. saprianovae Pape and Bänziger; and (3) on both of them (amphibiodotic), e.g. S. dux Thompson, S. ruficornis (Fabricius). However, larvae of copro- and necrobiodotic species experimentally transferred to cadaver and faeces, respectively, also developed to normal adults. The unexpected laying choosiness between excrement or carrion in the wild is discussed, together with the role played by laying habits in deceptive pollination systems and myiases.
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