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1,009 results for “water beetle”
FIGURE 8 in Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae)
FIGURE 8. Hydrochus purpureus Knisch, habitus and male genitalia of lectotype.
FIGURE 4 in Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae)
FIGURE 4. Hydrochus ducalis Knisch, habitus and male genitalia of lectotype.
FIGURE 3 in Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae)
FIGURE 3. Hydrochus drakei Knisch, habitus and male genitalia of lectotype.
FIGURE 2 in Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae)
FIGURE 2. Hydrochus corruscans Bruch, habitus and male genitalia of lectotype.
FIGURE 9 in Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae)
FIGURE 9. Hydrochus secretus Knisch, habitus and male genitalia of lectotype.
FIGURE 5 in Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae)
FIGURE 5. Hydrochus ducalis Knisch, habitus and male genitalia of paralectotype.
FIGURE 11 in Type designations for Neotropical water beetles in the genus Hydrochus Leach 1817 (Coleoptera: Hydrochidae)
FIGURE 11. Hydrochus variabilis Knisch, habitus and male genitalia of lectotype.
Figure 5 in Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)
Figure 5 Histology of the male reproductive tract of T. collaris. (A) Cross section of the confluence region of spermatic ducts and glands showing the presence of secretion (arrowhead) and spermatozoa (asterisk). (B) Cross and (C) longitudinal sections of the ejaculatory duct, indicating the cuboidal epithelium with basal nuclei (arrowhead), cuticle (arrowhead), and thick muscle layer (a = circular muscles, b = longitudinal muscles). Bars: A and B = 200 µm, C = 400 µm.
Figure 1 in Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)
Figure 1 Anatomy of the male reproductive tract of T. collaris. (A) Photograph of the anatomy of the male reproductive tract showing the testes (T), vasa deferentia (dd), seminal vesicles (sv), tubular accessory glands (ag), bean-shaped accessory glands (pg), and ejaculatory duct (ej). (B) Schematic drawing of the reproductive tract showing the position and direction of histological sections presented in Figures 2–5. Bars: 0.4 cm.
Figure 4 in Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)
Figure 4 Histology of the male reproductive tract of T. collaris. (A and B) Longitudinal section of the glandular region showing a tubular gland (ag1) with lumen full of secretion (black asterisk). The arrowhead points to the nucleus of the epithelium, and the black arrows to the opening of the common duct into the bean-shaped gland (ag2) in a region that precedes the ejaculatory duct (ej). Note the multilobed secretion (white arrow), lumen with secretion (white asterisk), and muscle layer (m) of the bean-shaped gland (ag2). (C) Cross section of the apical portion of the tubular gland showing apocrine secretion (dashed circle) and secretion granules in the lumen (asterisk). Longitudinal section of the ejaculatory duct (ej) showing the lumen (asterisk), simple cuboidal epithelium (arrow), and thick muscle layer (m). Bars: A = 200 µm, B = 150 µm, and C = 100 µm.
Figure 3 in Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)
Figure 3 Histology of the male reproductive tract of T. collaris. (A and B) Cross section of the glandular region showing the tubular accessory gland (ag1) and bean-shaped gland (ag2). The arrowhead indicates the epithelial folds, and the arrows point to the region of the secretory epithelium. Note the secretion accumulated in the lumen of the beanshaped gland (asterisk). (C and D) Cross section of a seminal vesicle (sv) with simple epithelium (arrow), and lumen full of spermatozoa (asterisk). In (D) detail of the epithelium (ep) and the external muscular layer (m). Bars: A = 200 µm, B and C = 100 µm, D = 25 µm.
Linked collectors and determiners for: Water Beetle Surveys from Britain and Ireland.
Natural history specimen data linked to collectors and determiners held within, "Water Beetle Surveys from Britain and Ireland". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/4f174243-a6e2-4ab3-99cb-129d2a6267e7">https://bionomia.net/dataset/4f174243-a6e2-4ab3-99cb-129d2a6267e7</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/4f174243-a6e2-4ab3-99cb-129d2a6267e7">https://gbif.org/dataset/4f174243-a6e2-4ab3-99cb-129d2a6267e7</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Three new species and DNA sequence data of the rare South American water beetle genus Adelphydraena Perkins, 1989 (Coleoptera: Hydraenidae).
Natural history specimen data linked to collectors and determiners held within, "Three new species and DNA sequence data of the rare South American water beetle genus Adelphydraena Perkins, 1989 (Coleoptera: Hydraenidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/fa172759-c7a8-4682-b992-8871c155eb3a">https://bionomia.net/dataset/fa172759-c7a8-4682-b992-8871c155eb3a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/fa172759-c7a8-4682-b992-8871c155eb3a">https://gbif.org/dataset/fa172759-c7a8-4682-b992-8871c155eb3a</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Taxonomy of Peruvian water beetles in the genus Hydrochus Leach, 1817 (Coleoptera: Hydrochidae).
Natural history specimen data linked to collectors and determiners held within, "Taxonomy of Peruvian water beetles in the genus Hydrochus Leach, 1817 (Coleoptera: Hydrochidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/cfd5c06e-06f0-4f1f-ae4b-40b7b46f44a3">https://bionomia.net/dataset/cfd5c06e-06f0-4f1f-ae4b-40b7b46f44a3</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/cfd5c06e-06f0-4f1f-ae4b-40b7b46f44a3">https://gbif.org/dataset/cfd5c06e-06f0-4f1f-ae4b-40b7b46f44a3</a>. Formatted as a Frictionless Data package.
FIGURES 85–88 in A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae)
FIGURES 85–88. Geographical distributions of Hydraena species.
FIGURES 79–80 in A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae)
FIGURES 79–80. Geographical distributions of Hydraena species.
FIGURES 81–84 in A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae)
FIGURES 81–84. Geographical distributions of Hydraena species.
FIGURES 75–76 in A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae)
FIGURES 75–76. Geographical distributions of Hydraena species.
FIGURES 77–78 in A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae)
FIGURES 77–78. Geographical distributions of Hydraena species.
FIGURES 66–70 in A revision of the water beetle genus Hydraena Kugelann for southern Africa (Coleoptera: Hydraenidae)
FIGURES 66–70. Geographical distributions of Hydraena species.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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