Head and thorax of N. salmelai sp. n. Scale bar = 0.5 mm. Abbreviations: anepst = anepisternum; aprnt = antepronotum; clyp = clypeus; cx = coxa; fc = face; flgm = flagellar segment; hlt = halter; ltg = laterotergite; mtepst = metepisternum; mtg = mediotergite; oc = ocellus; ped = pedicell; plp = palpal segment; preepst = preepisternum; proepst = proepisternum; sc = scutum; scp = scape; vrt = vertex; wg = wing.