Fig. 3
From: Evolution of wing scales in Diptera documented by fossils
Maietta trimedia Alexander, 1967, recent species, scales, macro-and microtrichia on wing (A–E) and thorax (F–J): A, wing margin; B, single scale anchored in wing membrane set with microtrichia; C, pocket of scale; D, empty pocket after the scale had been lost; E, detail of transverse and longitudinal ribs of scale; F, pocket of scale on thorax; G, brush of scales on katepisternum; H, loose scale and several empty pockets among microtrichia; I, brush of macrotrichia on metanepisternum; J, single macrotrichium with longitudinal and cross ribbing. Scale bars in µm: A, G, I: 100; B, H: 40; C, D: 3; E: 1; F, J: 5