FIGURES 158–167 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)

FIGURES 158–167. The shapes of the apices of the maxillae, the shape of the mandibular file, and the shape of the rupturing device on the maxillae in the Gelastocoridae: Gelastocorinae; 158–162. Gelastocoris oculatus, 158. The left and right mandibular file, internal sides (ie) have shallow grooves; 159. The left and right mandibular file with eight blunt pegs (bp); 160. The position and complete view of the mandible, in proximal part external edge is equipped in short claws (cl); 161. The right and left apex of the maxilla is straight, the ventral rupturing device (brvex, brvin) is visible, ventral view; 162. The right and left apex of the maxilla is straight, a short dorsal rupturing device (brdex) is visible, dorsal view; Nerthrinae; 163–165. Nerthra macrothorax, 163. The right and left mandibular file with 13 blunt pegs; 164. Shape of apices of the maxillae; 165. Straight apex of the left maxilla in ventral view; 166–167. Nerthra nepaeformis, 166. The rupturing device (brvin) situated on inner side of the right maxilla; 167. The left mandibular file with twelve blunt pegs.