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30 results for “Oosternum”
Figs 19–22 in Larval chaetotaxy and morphometry of Oosternum costatum (Coleoptera: Hydrophilidae) including a discussion of larval characters with phylogenetic relevance
Figs 19–22. Chaetotaxy of third instar larva of O. costatum (LeConte, 1855). 19 – left maxilla, dorsal view; 20 – right stipes, dorsal view; 21 – left maxilla, ventral view; 22 – labium, ventral view (hypopharyngeal lobe not included). Scale bars = 0.02 mm.
Figs 5–8 in Larval chaetotaxy and morphometry of Oosternum costatum (Coleoptera: Hydrophilidae) including a discussion of larval characters with phylogenetic relevance
Figs 5–8. Chaetotaxy of first instar larva of O. costatum (LeConte, 1855). 5 – detail of clypeolabrum; 6 – left antenna, dorsal view; 7 – left mandible, dorsal view; 8 – right mandible, dorsal view. Scale bars = 0.01 mm.
Figs 15–18 in Larval chaetotaxy and morphometry of Oosternum costatum (Coleoptera: Hydrophilidae) including a discussion of larval characters with phylogenetic relevance
Figs 15–18. Chaetotaxy of third instar larva of O. costatum (LeConte, 1855). 15 – detail of clypeolabrum; 16 – left antenna, dorsal view; 17 – left mandible, dorsal view; 18 – right mandible, dorsal view. Scale bars = 0.02 mm.
Figs 3–4 in Larval chaetotaxy and morphometry of Oosternum costatum (Coleoptera: Hydrophilidae) including a discussion of larval characters with phylogenetic relevance
Figs 3–4. Chaetotaxy of first instar larva of O. costatum (LeConte, 1855). 3 – head capsule, dorsal view; 4 – head capsule, ventral view. Scale bar = 0.05 mm.
Figs 1–2 in Larval chaetotaxy and morphometry of Oosternum costatum (Coleoptera: Hydrophilidae) including a discussion of larval characters with phylogenetic relevance
Figs 1–2. Habitus of third instar larva of O. costatum (LeConte, 1855). 1 – dorsal view; 2 – lateroventral view. Scale bar = 1 mm.
Figs 13–14 in Larval chaetotaxy and morphometry of Oosternum costatum (Coleoptera: Hydrophilidae) including a discussion of larval characters with phylogenetic relevance
Figs 13–14. Chaetotaxy of third instar larva of O. costatum (LeConte, 1855). 13 – head capsule, dorsal view; 14 – head capsule, ventral view. Scale bar = 0.05 mm.
Figs 9–12 in Larval chaetotaxy and morphometry of Oosternum costatum (Coleoptera: Hydrophilidae) including a discussion of larval characters with phylogenetic relevance
Figs 9–12. Chaetotaxy of first instar larva of O. costatum (LeConte, 1855). 9 – left maxilla, ventral view; 10 – left stipes, dorsal view; 11 – right maxilla, dorsal view; 12 – labium, ventral view. Scale bars = 0.01 mm.
Figs. 9–16 in Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group
Figs. 9–16. Diagnostic characters of the Oosternum convexum species group. 9 – prosternum; 10 – elytral apex (arrow: elytral interval 2); 11 – detail of basal portion of epipleuron (note marginal denticulation); 12 – ventral surface of mesotibia (female); 13 – ditto male (arrow: multiplied spines in inner row); 14 – detail of elytral surface (arrows: small denticles at each serial puncture); 15 – terminal abdominal sclerites of male (st8: sternite 8; st9: sternite 9; ter8: tergite 8); 16 – head in lateral view. 9, 11, 14 – O. convexum sp. nov.; 10, 12 – O. simplex sp. nov.; 13, 15, 16 – O. intermedium sp. nov.
Figs. 1–2 in Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group
Figs. 1–2. Habitus of Oosternum convexum sp. nov.: 1 – dorsal view, 2 – lateral view. Body length: 1.75 mm.
Figs. 17–23 in Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group
Figs. 17–23. Differential characters of species of Oosternum convexum group. 17–18 – mentum; 19–21 – meso- and metaventrite (arrow: different shapes of lateral part of anterolateral ridge of metaventrite); 22–23 – right elytron (arrow: elytral interval 3). 18, 20, 22–23 – O. convexum sp. nov.; 19, 22 – O. simplex sp. nov.; 20 – O. intermedium sp. nov.
Figs. 3–8. Aedeagophores. 3, 5, 7 in Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group
Figs. 3–8. Aedeagophores. 3, 5, 7 – whole aedeagus; 4, 6, 8 – detail of apical portions of parameres and median lobe. 3–4 – Oosternum simplex sp. nov.; 5–6 – O. intermedium sp. nov.; 7–8 – O. convexum sp. nov.
Fig. 24 in Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group
Fig. 24. Distribution of the Oosternum convexum species group.
FIGURES 78–83 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 78–83. Prosternal plate in lateral view (78–79), elytral intervals (80–81) and median portion of metaventrite (82–83). 78: O. latum; 79–80, 82: O. aequinoctiale; 81, 83: O. holosericeum.
FIGURES 56–59. Pronotal punctation and microsculpture. 56–57 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 56–59. Pronotal punctation and microsculpture. 56–57: O. aequinoctiale; 58–59: O. holosericeum.
FIGURES 60–65. Mentum. 60 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 60–65. Mentum. 60: O. acutheca; 61: O. attenuatum (a: specimen from Panama, b: specimen from Ecuador); 62: O. gibbicolle; 63: O. latum; 64: O. aequinoctiale; 65: O. holosericeum.
FIGURES 32–35 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 32–35. Habitus of the representatives of O. aequinoctiale group. 32: O. aequinoctiale; 33: O. gibbicolle; 34: O. holosericeum; 35: O. latum.
FIGURES 27–31 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 27–31. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 27, 29: O. sculptum group; 28: O. attacomis group; 30: O. aequinoctiale group; 31: O. sharpi group.
FIGURES 11–26 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 11–26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11–12, 23: O. sculptum group; 13–14: O. group C; 15–16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A.
FIGURES 4–10 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 4–10. Labels used by M. Fikáċek (4–5), M. Hansen (6–8) and F. Hebauer (9–10) for designation of type specimens of Oosternum.
FIGURES 1–3 in Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group
FIGURES 1–3. Used terminology and measurements of aedeagus (1), beetle body (2) and prosternal plate (3).
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