Figure 4 in Skolomystax, a new genus for the Australian species formerly included in Centroptilum Eaton (Ephemeroptera: Baetidae)

Figure 4. Skolomystax brevis: a, labrum; b, labrum notch; c, maxilla; d, hypopharynx; e, right mandible; f, left mandible; g, right mandible incisors; h, left mandible incisors; i, tergite spines; j, sternit e sp ines; k, paraproct. Scale lines: a, c–f, i–k = 0.15 mm; b, g, h = 0.07 mm.