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125 results for “Water bug”
FIGURE 22 in Descriptions of new species and new records of water bugs (Hemiptera: Heteroptera: Gerromorpha & Nepomorpha) from southeastern Brazil
FIGURE 22. Distribution of Ovatametra gualeguay (Gerromorpha, Gerridae) in southeastern Brazil and adjacent areas. Stars indicate new records; circles indicate previous records.
FIGURE 25 in Descriptions of new species and new records of water bugs (Hemiptera: Heteroptera: Gerromorpha & Nepomorpha) from southeastern Brazil
FIGURE 25. Distribution of Hydrometra argentina (yellow), H. comata (pink), H. fruhstorferi (red) and H. sztolcmani (blue) in southeastern Brazil. Stars indicate new records; circles indicate previous records; question marks indicate unspecified localities.
FIGURE 7 in Descriptions of new species and new records of water bugs (Hemiptera: Heteroptera: Gerromorpha & Nepomorpha) from southeastern Brazil
FIGURE 7. Distribution in southeastern Brazil and adjacent areas. A. Brachymetra albinervus. B. Cylindrostethus palmaris. C. Limnogonus aduncus aduncus. Stars indicate new records; circles indicate previous records.
FIGURES 215–226 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 215–226. 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 Notonectidae: Anisopinae; 215–216. Anisops sardea, 215. The left apex of the maxilla is more narrow and sharp than right one; 216. The right mandibular file with three blunt pegs (bp) and long spines (spl); 217–218. Buenoa uhleri, 217. The right mandibular file with three blunt pegs (bp) and six long spines (spl); 218. The left apex of the maxilla is narrow, the right apex is more blunt; Notonectinae; 219–220. Enithares bergrothi, 219. The left mandibular file with eight blunt pegs (bp) and 14 long spines (spl); 220. The rupturing device hidden; the ventral row of; short bristles on the left maxilla is visible, the distal part of the salivary and food canals also are visible; 221–222. Nychia sappho, 221. The right mandibular file with six blunt pegs (bp) and five long spines (spl); 222. The ventral rupturing device (brvex) of the right maxilla is slightly visible; 223–226. Notonecta glauca, 223. The right mandibular file with five blunt pegs (bp) and eight long spines (spl); 224. Dorsal view of the maxillae, the rupturing device is invisible; 225. Two rows of bristles of the rupturing device (brdex, brvex) are visible when one of the maxilla more protruding than the other; 226. Dorsal and ventral edges of the right maxilla; the inner row of short spines (spvin); external, ventral row of long bristles (brvex) and a short bristle on the dorsal edge (brdex) are visible.
FIGURES 168–178 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 168–178. 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 Aphelocheiridae: 168–169. Aphelocheirus aestivalis, 168. The left mandibular file with eight spines (the file is divided into four short (sph) and four longer spines (spl), the shape of the maxillary apices (left and right), right maxilla with short bristles (brvex), dorso-lateral view; 169. The shape of the bundles of the mandibular and maxillary stylets; 170–172. Aphelocheirus variegatus, 170. The right and left mandibular file with eight spines: four short (sph) and four longer spines (spl), ventral view; 171. The apex of the left maxilla is wide, apex of the right maxilla is straight; 172. The rupturing device (brvex) is visible, when maxillae are open, apex of the left maxilla is wide; the right apex is straight; Naucoridae: Cheirochelinae: 173–175. Cheirochela feana, 173. The left maxillary apex is wide, the right is straight, dorsal view; 174. The right mandibular file with two blunt pegs (bp), one short spine (sph), and ten long spines (bristles) (spl), which forming a structure to collar—like; 175. The ventral rupturing device (brvex) with stiff bristles, the apex of the right maxilla is straight, but the left one is wide and curved; the right mandibular file (two blunt peg distinctly visible); 176 –178. Gestroiella limnocoroides, 176. The apex of the left maxilla is slightly curved, the apex of the right maxilla is straight, the rupturing device (brvex) with more a flexible bristles; 177. The right mandibular file with two blunt pegs (bp), one short spine (sph), and eleven long spines (bristles) (spl); 178. The shapes of apices of the maxillae (the right apex is straight, and the left is curved), the dorsal row of bristles (brdex) is visible.
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.
FIGURES 115–124 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 115–124. 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 Nepidae: Nepinae: 115–116. Curicta granulosa, 115. The apex of the left maxilla (al); 116. Distribution of bristles (brvin, brvex) on the left maxilla; 117–118. Borborophyes mayri, 117. The apex of the right maxilla (Rmx) (ar); 118. The left maxilla (Lmx); the external row of bristles (brvex) on the ventral side; 119–121. Laccotrephes japonensis, 119. The numbers of spines of the right mandibular file (No 1, 2, 3, 4), rows of bristles (brvex and brvin) on the right maxilla (Rmx); 120. The apices of the maxillae (Rmx and Lmx); dorsal view, lobe (lo); 121. External and ventral of rupturing device (brvex) of the maxillae (Rmx and Lmx), the left mandibular file (Lmd) with sharp spines; 122–124. Nepa cinerea, 122. The right mandibular file with four spines; 123. The narrow apex of the left maxilla (Lmx), the lobe (lo) is visible, the apex of the right maxilla is straight, the short row of bristles (brdin) on the right maxilla; 124. The bristles (brvex) on the ventral side of the maxillae (Rmx and Lmx) (rupturing device).
FIGURES 87–104 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 87–104. Cross-section of the third segment of the rostum. Nepidae: Nepinae, 87. Laccotrephes japonensis. 88. Nepa cinerea. Ranatrinae, 89. Ranatra linearis. Belostomatidae: Belostomatinae, 90. Belostoma backeri. 91. Appasus major. Lethocerinae: 92. Lethocerus deyrollei. Gelastocoridae: Gelastocorinae, 93. Gelastocoris bufo. Nerthrinae: 94. Nerthra sp.. Ochteridae: 95. Ochterus marginatus. Aphelocheiridae: 96. Aphelocheirus variegatus. Naucoridae: Cryphocricinae; 97. Ambrysus lunatus. Naucorinae: 98. Ilyocoris cimicoides. Notonectidae: Anisopinae, 99. Anisops sardea. Notonectinae: 100. Notonecta glauca. 101. Enithares indica. Pleidae: 102. Plea minutissima. Helotrephidae: 103. Tiphotrephes indicus. Corixidae: Corixinae; 104. Agraptocorixa hyalinipennis.
FIGURES 105–114 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 105–114. The internal shape of the maxillae and mandibles. Nepidae: Nepinae; 105. Laccotrephes japonensis. Ranatrinae, 106. Ranatra linearis. Belostomatidae: Belostomatinae, 107. Belostoma bakeri. Gelastocoridae: Gelastocorinae; 109. Gelastocoris bufo. Ochteridae; 110. Ochterus marginatus. Aphelocheiridae; 111. Aphelocheirus variegatus. Naucoridae: Naucorinae; 112. Ilyocoris cimicoides. Notonectidae: Anisopinae; 113. Anisops sardea. Pleidae: 113. Plea minutissima. Corixidae: Corixinae; 114. Agraptocorixa hyalinipennis.
FIGURES 146–157 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 146–157. 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 Belostomatidae: Belostomatinae; 146–151. Hydrocyrius colombiae, 146. The left mandibular file with ten spines; 147. The narrow and sharp apices of the maxillae, dorsal view; 148. The external, lateral edge of the left maxilla with nodules (nol); 149. The lateral edge of the right maxilla with nodules (nol); 150. The apices of the maxillae (Rmx and Lmx) are interlocked together; 151. The rupturing device (brdex) on the dorsal part of the maxillae; 152–153. Limnogeton fieberi, 152. The left mandibular file with eleven spines; 153. The rupturing device (spdex, spvex spvin) and nodules (nol) of the maxillae; Lethocerinae; 154–157. Lethocerus deyrollei, 154. The left mandibular file with ten spines; 155. The ventral rupturing device (brvex), nodules (nol) on the lateral edges of the maxillae; 156. Distribution of the nodules on the lateral edges of the maxillae, the apical part of the maxillae is broken; 157. Detailed of the shape of the claws (cl) and nodules (nol) on the maxillae, dorsal view.
FIGURES 69–85 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 69–85 The shapes of the apices of the maxillae and the shape of the rupturing device on the maxillae. Naucoridae: Naucorinae; 69. Macrocoris rhantoides, the apex of the left maxilla is lancet-shaped (los), the rows of bristles are present at the dorsal and ventral side (brdex and brvex) of the right and left maxilla; 70. Macrocoris rhantoides, ventral view, the apex of left maxilla is lancet-shaped (los), the rupturing device (brdex, brvex) is visible; 71. Neomacrocoris handlirschi, ventral view of the left maxilla; the bristles (brvex and brdex) are grouped in small tufts, dorsal and ventral rows of bristles are visible; 72. Namtokocoris siamensis, the dorsal inner edge of the right maxilla is equipped in the short spines (spdin). On the ventral edge of the right maxilla long of bristles (brvex) are visible; 73. Pelocoris femoratus, on the dorsal side a delicate tufts of the bristles are visible; 74. Pelocoris femoratus, ventral view, the rupturing device is distinctly visible; Pleidae: 75. Paraplea frontalis, dorsal view, the apices of the maxillae are lancet-shaped (los) and these are tightly constricted; 76. Paraplea frontalis, inner view, rows of bristles were not found; Helotrephidae: Helotrephinae; 77. Hydrothrephes visayasinensis, dorsal view; the apex of the left maxilla is lancet-shaped (los); the bristles on the inner edges restricting the food canal are slightly visible (spdin) in the proximal part of the right and left maxilla; 78. Hydrothrephes visayasinensis, ventral view, the apex of the right maxilla is lancet-shaped (los); Notonectidae: Anisopinae; 79. Anisops cameroonensis, dorsal view; 80. Buenoa uhleri; dorsal view, Notonectinae: 81. Enithares bergrothi, ventral view of the left maxilla; the rupturing device is slightly visible (brvin); 82. Notonecta glauca, ventral view of the right maxilla; the rupturing device (brdex, brvex) is visible, the right maxilla is more protruding than left maxilla; Corixidae: Corixinae; 83. Agraptocorixa hyalinipennis; ventral view of the right maxilla; the apex is wide and has a short spines (spvex), the left maxilla is ended by a sharp hook (ho); Cymatiinae,84. Cymatia coleoptrata, Stenocorixinae; 85. Stenocorixa protrusa; lateral view of the maxillae; the apex of the right maxilla is wide, the apex of the left maxilla is ended by a sharp hook (ho).
FIGURES 37–51 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 37–51. The shapes of the apices of the maxillae and the shape of the rupturing device on the maxillae (brdex, brvex, brvin, brdin). Nepidae: Nepinae; 37–38. Laccothrephes japonensis; 37. Dorsal view; 38. Ventral view; 39–40. Nepa cinerea; 39. Dorsal view; 40. Ventral view; Ranatrinae; 41. Cercotmetus asiaticus; dorsal view; 42–43. Ranatra chinensis; 42. Dorsal view; 43. Ventral view; Belostomatidae: Belostomatinae; 44–45. Belostoma flumineum; 44. Dorsal view; 45. Ventral view; 46. Appasus major, dorsal view; 47. Hydrocyrius colombiae, dorsal view; Lethocerinae: 48–49. Lethocerus deyrollei; 48. Dorsal view; 49. Ventral view; Ochteridae: 50–51. Ochterus marginatus (drawing was made based on description in Cobben (1978)); 50. Dorsal view; 51. Ventral view; Rmd—right maxilla; Lmd—left maxilla; lo–narrow lobe; nol—nodules on the lateral edges of the maxillae; cl–spines on the dorso—lateral edges of the maxillae; brdex—external dorsal bristles; brvex—external, ventral bristles on the external edges of the maxillae (rupturing system); brvin—internal ventral, bristles of the maxillae.
FIGURES 234–245 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 234–245. 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 Helotrephidae: Helotrephinae; 234–237. Helotrephes semiglobosus, 234. The left maxilla a clearly protruding; 235. The left mandibular file with one to four blunt pegs (bp), five to eight short spines (sph), nine nodule (no), ten to eleven long spines (spl), 12–18 nodules (no); 236. The apex of the left maxilla is lancet-shape (lobe, los), dorsal view; 237. The right maxilla is narrow and lancet-shape (lobe, los),ventral view; 238–239. Hydrotrephes visayasinensis, 238. The apex of the left maxilla is narrow and lancet-shape (lobe, los), dorsal view; 239. The left mandibular file with four blunt pegs (bp), four short spines (sph), one nodule (no), two long spines (spl), seven nodules (no); 240–244. Hydrotrephes balnearius; 240. The left apex of the maxilla is narrow and lancet-shape (lobe, los), the apex of the right is narrow, dorsal view; 241. Maxillae more protrude than the mandibles; 242. The right apex of the maxilla is lancet-shape (lobe, los) on the ventral side; 243. Short bristles on the inner side of the right maxilla (brvin); 244. The right mandibular file with three blunt pegs (bp), four short spines (sph), one nodule (no), two long spines (spl), seven nodules (no); 245. Tiphotrephes indicus, The right mandibular file with four blunt pegs (bp), three short spines (sph), one nodule (no), two long spines (spl), seven nodules (no).
FIGURES 24–36 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 24–36. Shape of the mandibular file. Notonectidae: Anisopinae: 24. Anisops sardea; 25. Buenoa uhleri; Notonectinae: 26. Enithares bergrothi; 27. Notonecta glauca; 28. Nychia sappho; Pleidae: 29. Paraplea frontalis; Helotrephidae: Helotrephinae; 30. Helotrephes semiglobosus; 31. Hydrothrephes visayasinensis; Corixidae: Corixinae; 32. Agraptocorixa hyalinipennis; Diaprepocoridae; 33. Diaprepocoris zealandiae; Stenocorixinae; 34. Stenocorixa protrusa; Cymatiinae; 35. Cymatia coleoptrata; Micronectidae; 36. Micronecta quadristrigata; Rmd—right mandible, bp—blunt pegs, sph—short spines, spl—long spines, pn—plagues with nodule, no—nodules, pm—massive plates.
FIGURE 257. A in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURE 257. A modification of the shape of the maxillary endings in Nepomorpha (description in the text).
FIGURES 135–145 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 135–145. 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 Belostomatidae: Belostomatinae; 135–136. Belostoma flumineum, 135. The left mandibular file with five spines; inner side of the left maxilla, (cl), short claws on the left maxilla at the lateral side; 136. The rupturing device (brvin, brvex)—ventral view; 137–139. Belostoma bakeri; 137. The right and left mandibular files with numbers of spines (No.1, 2, 3, 4, 5); 138. The dorsal views of the maxillae, inner row of bristles (brdin) is visible; 139. Two ventral rows of bristles (inner (brvin) and external (brvex)) on the maxillae; 140–141. Dienostoma dilatatum, 140. The left mandibular file with six spines; 141. The ventral part of the maxillae, the rupturing device (brvex) is exhibited, nodules (nol) on the lateral edge of maxilla are visible; 142–145. Appasus major, 142. The right mandibular file (Rmd) with seven spines; 143. The ventral part of the maxillae (Rmx and Lmx), the rupturing device (brvex) is visible; 144. Maxillae with visible differentiated edges, lateral edge is equipped in nodules (nol), dorsal edge has short claws (cl) (different than bristles or spines); 145. The narrow apex of the left maxilla, lobe (lo), nodules (nol) on the lateral edge of maxilla are visible.
FIGURES 227–233 in A comparison of external and internal maxilla and mandible morphology of water bugs (Hemiptera: Heteroptera: Nepomorpha)
FIGURES 227–233. 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 Pleidae: Paraplea frontalis, 227. The shape of the mandibular files (Rmd, Lmd), ventral view; 228. The length of the maxillae and mandibles from the base; 229. The left mandibular file with twelve plaques with a nodules (pn) and seven long spines (spl); 230. The right mandibular file (the shape is the same as on the left file); 231. The inner side of the maxillae, the bristles (rupturing device) are invisible; 232. The apices of the left and right maxilla are lancet—shaped (los); 233. Ventral view, the apex of the right maxilla is lancet-shaped (los), the left apex is narrow.
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.
Data from: A new approach to chromosomal evolution in the giant water bug (Heteroptera: Belostomatidae)
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Data from: Sexual selection of male parental care in giant water bugs
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