Figures 12–19. Apical rostral segments of Pseudoregma spp. 12–15 Apterous adult, 16–19 normal first-instar nymph: 12 & 16 P. baenzigeri, 13 & 17 P. alexanderi, 14 & 18 P. carolinensis, 15 & 19 P. bambucicola. Scale lines: 0.1 mm; the upper line for 12–15 and the lower for 16–19.