FIGURE 4A–D in Taxonomic revision of Brazilian genus Tyrannoseira Bellini & Zeppelini, 2011 (Collembola, Entomobryidae, Seirinae)

FIGURE 4A–D. Scanning electron microscopy of T. bicolorcornuta: ventral and frontal head; A, mouthparts (anterior view), l1 and l2 clypeal chaetae larger and apically acuminate, a1–3 and a5 smooth chaetae (a4 fallen), M1–2, E, L1–2 ciliate chaetae and r spine-like smooth chaeta reduced on basomedian and basolateral labial fields, augmented image is a1 chaeta of labrum, arrow indicate subantennal bothriotrichum; B, labral papillae (dorsal view), white arrow indicates reduced outer papilla and red arrow indicates apical inner papilla bifurcate; C, basomedian labial field laterally (left face), arrow indicates reduced spine-like smooth r chaeta; D, labial papillae (left face), A–E main papillae and H main hypostomal chaeta, arrow indicates lateral process (l.p.) of papilla E, dashed line indicates proximal chaetae (p.c.). Scale bars: A (0.03 mm), B–D (0.004 mm).