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This may be Therevidae. Body segments subdivided but its subsegments approximately equal to each other (not narrow ring and wider second part). Head is sclerotised dorsally only. Besides you can see dark metacephal rod (character typical for Orthorrhaphous larva) posteriorly from head capsule which is broaded (character typical for Therevidae). To make sure finally please look if it has 2 papillae posteriorly (Anisopodidae have 5-lobed posterior end with posterior spiracles like Limoniidae) and Therevidae have popsterior pair of spiracles on lateral sides of segment.
If it is Therevidae then it is predator. It needs some damaged a little fresh larva to eat before pupation (or ant eggs or something like this).B)