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Hello all!

On an amphibian survey on El Oro, Ecuador, a team of herpetologists found a Hyloscirtus frog with serious subdermal myasis, the larvae found are somewhat difficult for identifying, and i submit some pictures of them. We are very interested in what could be the species, because we are trying to evaluate the environmental stress on amphibians on a forest preserve using the parasitic load on them.

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image2

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image3(spiracles dissected)

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If these black plates are really the posterior spiracles than it is not Calliphoridae. It is difficult to judge from the photo's if these are anal pads or posterior spiracles. I don't think this would become some member of a palaearctic family. There is a member of an Australian Chloropidae living under the frogs skin (Batrachomyia) but the known larvae of Chloropidae have a different posterior spiracle. Also Bufolucilia (Calliphoridae) infest toads but Calliphorids do have other posterior spiracles. Would you please check if these black 'pads' do have smaill pores or not.

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The third likely family is Sarcophagidae, but I can't tell from these pictures what family the larva is.

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spiracular area cleared with chloral hydrate

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mouth hooks cleared(lateral)

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mouth hooks(dorsal)

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The dark areas in the spiracles dissapears with clearing, I hope the cleared images are easier to classify

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Possibly Hemilucilia sp?