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58 results for “Dytiscinae”
Fig. 1 in Changes in Mandibular Musculature and Morphology in Response to Stemmatal Enlargement in Larvae ofThermonectus basillaris(Harris) andAcilius mediatus(Say) (Coleoptera: Dytiscidae: Dytiscinae)
Fig. 1. Anteroventral wall removed to reveal cranial interior of (A) Agabus punctatus and (B) Thermonectus basillaris. Ab 5 abductor muscle, Ad 5 adductor muscle, Ap 5 apodeme, AL 5 apodemal angle, Md 5 mandible, Sr 5 stemmatal region. Line ab determined using a basal line (ab) drawn through the center of the ball component of the ventral articulation of the right and left mandibles.
Figs. 2–4. 2 in Changes in Mandibular Musculature and Morphology in Response to Stemmatal Enlargement in Larvae ofThermonectus basillaris(Harris) andAcilius mediatus(Say) (Coleoptera: Dytiscidae: Dytiscinae)
Figs. 2–4. 2) Lateral view of Agabus punctatus showing distribution and relative size of corneal lenses of the stemmata. Each stemma is identified with an Arabic number (Schöne 1951, 1962). 3) Lateral view of Thermonectus basillaris, showing distribution and relative size of corneal lenses of the stemmata along with the cellular sacs (cs) of stemmata one and three. 4) The mandibular abductor muscle (Ab) of Thermonectus basillaris is overlain on the mandibular architecture (Md) of Agabus punctatus to illustrate the biomechanical problem resulting from stemmatal expansion. The medial displacement of the abductor apodeme places its line of action virtually inline with the mandibular joint. For a lever system to function the force vector must be at least some distance from the fulcrum.
FIGURE 26 in Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
FIGURE 26. One of the most parsimonious trees obtained from the cladistic analysis, with character state changes mapped for each clade. Numbers in bold underlined indicate unique character state transformations.
FIGURE 24 in Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
FIGURE 24. Habitat of Rhantaticus congestus (Klug, 1833), temporary pool near Nanarena village, Plateau de l'Horombe.
FIGURE 25 in Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
FIGURE 25. Strict consensus cladogram obtained from the cladistic analysis of 94 morphological characters scored for nine terminal taxa of Aciliini and three outgroups, with Bremer support values indicated above branches and Bootstrap support values higher than 50 indicated below branches.
FIGURES 21-23 in Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
FIGURES 21-23. Rhantaticus congestus (Klug, 1833): 21. instar II, lateral aspect; 22. instar II, dorsal aspect; 23. instar III, lateral aspect. Scale bar = 5 mm.
FIGURES 15-20 in Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
FIGURES 15-20. Rhantaticus congestus (Klug, 1833), instar III: 15. head, dorsal aspect; 16. head ventral aspect; 17. antenna, dorsal aspect; 18. maxilla, dorsal aspect; 19. mesocoxa and mesotrochanter, anterior surface; 20. mesocoxa and mesotrochanter, posterior surface. A, antennomere; MP, maxillary palpomere. Scale bars = 0.5 mm (Figs 15–16); 0.2 mm (Figs 17–20).
FIGURES 11–14 in Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
FIGURES 11–14. Rhantaticus congestus (Klug, 1833), instar II: 11. mesothoracic leg, anterior surface; 12. mesothoracic leg, posterior surface. 13. abdominal segment VIII, dorsal aspect; 14 urogomphus, dorsal aspect. AB, abdominal segment VIII; CO, coxa; FE, femur; TA, tarsus; TI, tibia; TR, trochanter; UR, urogomphus. Numbers and lowercase letters refer to primary setae and pores, respectively. Scale bars = 0.2 mm (Figs 11–13); 0.1 mm (Fig. 14).
FIGURES 1–10 in Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)
FIGURES 1–10. Rhantaticus congestus (Klug, 1833), instar II: 1. head capsule, dorsal aspect; 2. head capsule, ventral aspect; 3. antenna, dorsal aspect; 4. antenna, ventral aspect; 5. mandible, dorsal aspect; 6. mandible, ventral aspect; 7. maxilla, dorsal aspect; 8. maxilla, ventral aspect; 9. labium, dorsal aspect; 10. Labium, ventral aspect. AN, antenna, FR, frontoclypeus; gAN, antennal group; gMX, maxillary group; LA, labium; LC, lamellae clypeales; MN, mandible; MX, maxilla; PA, parietal; TP, tentorial pits; sp, spinula. Numbers and lowercase letters refer to primary setae and pores, respectively. Scale bars = 0.5 mm (Figs 1–2); 0.1 mm (Figs 3–10).
FIGURE 184 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURE 184. Single most parsimonious cladogram of 13 terminal taxa of Dytiscinae (length = 162, CI = 77, RI = 83), with Bremer support values indicated above branches and jackknife values above 50 indicated below branches.
FIGURES 170–177 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 170–177. Distribution of ancestral setae and pores on right urogomphus of first instar of selected species of Dytiscinae, dorsal surface; (170) Acilius semisulcatus; (171) Thermonectus succinctus; (172) Graphoderus occidentalis; (173) Eretes australis; (174) Notaticus fasciatus; (175) Hydaticus tuyuensis; (176) Dytiscus harrisii; (177) Hyderodes shuckardi; UR, urogomphus; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 5 for list of setae and pores).
FIGURES 163–169 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 163–169. Distribution of ancestral setae and pores on ventral surface of last abdominal segment of first instar of selected species of Dytiscinae; (163) Dytiscus harrisii; (164) Hyderodes shuckardi; (165) Megadytes (Megadytes) carcharias; (166) Megadytes (Paramegadytes) glaucus; (167) Megadytes (Trifurcitus) fallax; (168) Cybister tripunctatus; (169) Onychohydrus scutellaris; AB, last abdominal segment; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 5 for list of setae and pores).
FIGURES 152–156 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 152–156. Distribution of ancestral setae and pores on dorsal surface of last abdominal segment of first instar of selected species of Dytiscinae; (152) Megadytes (Megadytes) carcharias; (153) Megadytes (Paramegadytes) glaucus; (154) Megadytes (Trifurcitus) fallax; (155) Cybister tripunctatus; (156) Onychohydrus scutellaris; AB, last abdominal segment; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 5 for list of setae and pores).
FIGURES 157–162 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 157–162. Distribution of ancestral setae and pores on ventral surface of last abdominal segment of first instar of selected species of Dytiscinae; (157) Acilius semisulcatus; (158) Thermonectus succinctus; (159) Graphoderus occidentalis; (160) Eretes australis; (161) Notaticus fasciatus; (162) Hydaticus tuyuensis; AB, last abdominal segment; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 5 for list of setae and pores).
FIGURES 144–147 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 144–147. Distribution of ancestral setae and pores on dorsal surface of last abdominal segment of first instar of selected species of Dytiscinae; (144) Acilius semisulcatus; (145) Thermonectus succinctus; (146) Graphoderus occidentalis; (147) Eretes australis; AB, last abdominal segment; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 5 for list of setae and pores).
FIGURES 178–183 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 178–183. Distribution of ancestral setae and pores on left urogomphus of first instar of selected species of Dytiscinae, ventral surface (except 182 right urogomphus, dorsal surface); (178) Megadytes (Megadytes) carcharias; (179) Megadytes (Paramegadytes) glaucus; (180) Megadytes (Trifurcitus) fallax; (181) Cybister tripunctatus; (182–183) Onychohydrus scutellaris, (182) dorsal surface; (183) ventral surface; UR, urogomphus; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 5 for list of setae and pores).
FIGURES 140–143 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 140–143. Distribution of ancestral setae and pores on metathoracic leg of selected species of Dytiscinae; (140–141) Cybister tripunctatus, (140) anterior surface, (141) posterior surface; (142–143) Onychohydrus scutellaris, (142) anterior surface, (143) posterior surface; CO, coxa, FE, femur; PT, pretarsus; TA, tarsus; TI, tibia, TR, trochanter; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 4 for list of setae and pores).
FIGURES 126–129 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 126–129. Distribution of ancestral setae and pores on metathoracic leg of selected species of Dytiscinae; (126–127) Notaticus fasciatus, (126) anterior surface, (127) posterior surface; (128–129) Hydaticus tuyuensis, (128) anterior surface, (129) posterior surface; CO, coxa, FE, femur; PT, pretarsus; TA, tarsus; TI, tibia, TR, trochanter; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 4 for list of setae and pores).
FIGURES 130–133 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 130–133. Distribution of ancestral setae and pores on metathoracic leg of selected species of Dytiscinae; (130–131) Dytiscus harrisii, (130) anterior surface, (131) posterior surface; (132–133) Hyderodes shuckardi, (132) anterior surface, (133) posterior surface; CO, coxa, FE, femur; PT, pretarsus; TA, tarsus; TI, tibia, TR, trochanter; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 4 for list of setae and pores).
FIGURES 122–125 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations
FIGURES 122–125. Distribution of ancestral setae and pores on metathoracic leg of selected species of Dytiscinae; (122–123) Graphoderus occidentalis, (122) anterior surface, (123) posterior surface; (124–125) Eretes australis, (124) anterior surface, (125) posterior surface; CO, coxa, FE, femur; PT, pretarsus; TA, tarsus; TI, tibia, TR, trochanter; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 4 for list of setae and pores).
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