FIGURES 191–202 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)

FIGURES 191–202. 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 Naucoridae: Laccocorinae; 191–193. Heleocoris humeralis, 191. The shape of the maxillary apices; 192. The left mandibular file with eight blunt pegs (bp) and six long spines (spl); 193. The apices of the left and right maxilla are narrow, the rupturing device (brvex) on the right maxilla; 194–196. Laccocoris hoogstraali, 194. The right maxilla with the ventral row of bristles (brvex); 195. The narrow apex of the left maxilla; 196. The right mandibular file with four blunt pegs (bp) and six long spines (spl); Limnocorinae; 197–198. Limnocoris lutzi, 197. The left mandibular file with five blunt pegs (bp) and five long spines (spl); 198. The narrow apices of maxillae; Naucorinae; 199–202. Macrocoris rhantoides; 199. A narrow apex of the left maxilla and a row of ventral bristles (brvex); 200. The left mandible with nine blunt pegs (bp) and six long spines (spl); 201. The apices of the right and left maxilla are slightly straight, dorsal view; 202. The ventral rupturing device (brvex) of the maxillae.