FIGURES 52–68 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)

FIGURES 52–68. The shapes of the apices of the maxillae and the shape of the rupturing device on the maxillae: Gelastocorinae; 52. Gelastocoris oculatus, dorsal view, the apices of the maxillae are straight, rows of bristles (brdex) on the dorsal side; 53. G. oculatus, ventral view, the bristles (brvex, brvin) form a ventral rupturing device; Nerthrinae; 54. Nerthra nepaeformis, dorsal view of the right maxilla, the bristles are directed towards the inside of the maxillae, 55. N. nepaeformis, dorsal view, the apex of the right maxilla is straight; Aphelocheiridae: 56. Aphelocheirus aestivalis, dorsal view, the apices of the maxillae adpressed, the shape of the apices almost straight, the rupturing device (brdin) is slightly visible; 57. A. aestivalis, lateral view, the apex of the left maxilla is curved, the rupturing device (brvex) is visible when the maxillae are open; Naucoridae: Cheirochelinae; 58. Cheirochela feana, dorsal view, the apex of the left maxilla is wide but the right one is straight; 59. Ch. feana, ventral view, the rupturing device (brvex) is exhibited; 60. Gestroiella limnocoroides, dorsal view; the right maxilla is equipped with rows of bristles (brdex, brvex), the right apex of the maxilla is straight, the left apex is wide with a small lobe (lo); 61. Coptocatus oblongulus, ventral view; the rupturing device (brvex, brdex, brdin) is visible; Cryphocricinae; 62. Ambrysus occidentalis, dorsal view; the apex of the left maxilla is lancet-shaped (los), the row of bristles on the right maxilla (brvex) is present; 63. A. occidentalis, inner view, the proximal part of the right maxilla has spines on the inner edges restricting the food canal (FC), the connection system upper (gru) and lower (grl) beteewn maxillae, (sc) salivary canal; 64. Cryphocricos hungerfordi, the apex of the left maxilla is lancet-shaped and the rupturing device distinctly visible; Limnocorinae; 65. Limnocoris lutzi; the rupturing device on the right maxilla on the dorsal and ventral side is visible (brdex, brvex); Laccocorinae; 66. Heleocoris humeralis; dorsal view, the apex of the left maxilla is lancet-shaped; 67. H. humeralis; inner view of the right maxilla; the rupturing device is slightly visible; 68. Laccocoris hoogstraali, inner view of the right and left maxillae; the rupturing device (brdex, brvex) is visible on the maxillae.