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356 results for “larval instar”
Figure 1 in Eggs, final-instar caterpillars and metamorphosis of Cyclosia macularia Guérin Méneville (Lepidoptera: Zygaenidae) from its larval host plant Baccaurea motleyana
Figure 1. (A) Final instar larva of Cyclosia macularia on Baccaurea motleyana leaf found in orchard (scale bar = 10 mm); (B) final instar larvae of C. macularia on B. motleyana leaf (scale bar = 10 mm); (C) turned black before it underwent pupation (scale bar = 10 mm).
FIGURES 28 30 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURES 28 30. Mouthparts of first instar Crozetia seguyi larvae. 28. Labral fan. Scale bar = 0.02 mm. 29. Larval hypostoma. Scale bar = 0.02 mm. 30. Larval mandibles. Scale bar = 0.02 mm. Abbreviations: lb labral fan; hyps hypostoma; mnd mandible.
FIGURE 3 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURE 3. Rivière du Camp, Possession Island, Crozet Islands, 1979. A typical habitat of Crozetia larvae. Pic du Mascarin (alt. 934 m) is in the background. (Courtesy, L. Davies).
FIGURE 2 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURE 2. Islands of the Crozet Archipelago. Bathymetric contours in meters. (Adapted from Boudon and Nougier 1982).
FIGURES 15 - 19. Crozetia. 15 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURES 15 - 19. Crozetia. 15. Cr. crozetensis, male paratype wing. Scale bar = 0.5 mm. 16. Cr. seguyi, higher magnification of male wing base. Scale bar = 0.5 mm. 17. Cr. seguyi, SEM of last instar larval head, frontal view. Scale bar = 0.1 mm. 18. Cr. crozetensis, LM of last instar larval head, dorsal view. Scale bar = 0.1 mm. 19. Cr. seguyi, LM of last instar larval head, dorsal view. Scale bar = 0.1 mm. Abbreviations: ant - antenna; ca - cephalic apotome; lf - labral fan; hyps - hypostoma; mnd - mandible; mx - maxilla; mxp - maxillary palpus.
FIGURES 13 - 14. Crozetia pupae. Left lateral views. 13 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURES 13 - 14. Crozetia pupae. Left lateral views. 13. Cr. crozetensis. 14. Cr. seguyi. Note rudimentary cocoon on posterior. Scale bar = 1.0 mm.
FIGURE 12–17 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURE 12–17. SEM micrographs of micropylar areas on other eggs of Bombus griseocollis showing variation in radiating channels and in apparent number of openings.
FIGURE 40 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURE 40. Microphotograph of cleared abdominal segment of fourth larval instar of Bombus griseocollis, anterior end right, with long, tapering, posteroventrad directed spicules of lower surface of lateral body swelling above and much smaller, denser ventral body spicules below.
FIGURES 34–36 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURES 34–36. Microphotographs of right mandible of fifth larval instar of Bombus griseocollis dorsal, inner, and ventral, and outer views, respectively (arrows pointing to setae in outer view).
FIGURES 23–25 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURES 23–25. Diagrams of fifth larval instars of Bombus griseocollis, lateral views, all to same scale. Scale = 1.0 mm, referring to figs. 23–25. Variation in body size reflecting natural variability in this stage. 23. Predefecating larva. 24. Early postdefecating larva with thoracic segmentation starting to elongate. 25. Late postdefecating larva with pupal metasoma starting to swell abdomen. Scale = 1.0 mm. FIGURES 26, 27. Close-up of head of fifth larval instar of B. griseocollis, lateral and front views respectively.
FIGURES 31–33 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURES 31–33. Microphotographs of front of head of Bombus griseocollis showing variation in clypeal pigmentation.
FIGURES 5–7 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURES 5–7. SEM micrographs of another egg of Bombus griseocollis. 5. Entire egg (anterior end left), again with micropyle centered in middle of front end. 6. Close-up of elevation. 7. Further close-up, demonstrating large number of possible openings.
FIGURES 8, 9 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURES 8, 9. Distant (arrow) and close-up views of the micropyle of yet another egg, this one revealing no certain opening. FIGURES 10. Front of egg of Bombus griseocollis that has lost its chorion, revealing small opening into yolk (arrow) in the vitelline membrane through which spermatozoa are presumably funneled to fertilize the egg. 11. Close-up of entrance.
FIGURES 2–4 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURES 2–4. SEM micrographs of egg of Bombus griseocollis. 2. Entire egg (anterior end up left) demonstrating smooth transparent chorion at short anterior and posterior ends and long stretch of reticulate, rough chorion in the middle. 3. Close-up of anterior end showing the small elevation of the micropyle located centrally. 4. Close-up of the micropyle elevation, with some micropylar opening visible along upper periphery.
FIGURES 18–22 in Preliminary Study of the Bumble Bee Bombus griseocollis, Its Eggs, Their Eclosion, and Its Larval Instars and Pupae (Apoidea: Apidae: Bombini)
FIGURES 18–22. SEM micrographs of reticulate chorion. 18. Close-up of exterior surface of reticulate chorion. 19. Same, except where reticulate chorion meets smooth chorions. 20. Edge of split of reticulate chorion with thin inner surface below and edge of outer structure along upper side. Note reticulate pattern of surface structure revealed through thin inner surface, 21. Close-up of central area in figure 20. 22. Close-up of parallel perpendicular lamellae from central area of figure 20 demonstrating complexity of outer ornamentation.
Fig. 6.- Anthrenus angustefasciatus final larval instar case. 6a in Behavioural and feeding observations of some Anthrenus Geoffroy, 1767 species (Coleoptera, Dermestidae) and identification using final larval instar cases
Fig. 6.- Anthrenus angustefasciatus final larval instar case. 6a.- Dorsal aspect (scale bar = 1 mm). 6b.- Lateral aspect (scale bar = 1 mm). 6c.- Head capsule (scale bar = 1 mm). 6d.- Arrow-headed hastisetae on terminal segments (scale bar = 100 µm).
Fig. 5.- Anthrenus amandae final larval instar case. 5a in Behavioural and feeding observations of some Anthrenus Geoffroy, 1767 species (Coleoptera, Dermestidae) and identification using final larval instar cases
Fig. 5.- Anthrenus amandae final larval instar case. 5a.– Dorsal aspect (scale bar = 1 mm). 5b.- Lateral aspect (scale bar = 1 mm). 5c.- Head capsule (scale bar = 1 mm). 5d.- Arrow-headed hastisetae on terminal segments (scale bar = 100 µm).
Fig. 7.- Anthrenus isabellinus final larval instar case. 7a in Behavioural and feeding observations of some Anthrenus Geoffroy, 1767 species (Coleoptera, Dermestidae) and identification using final larval instar cases
Fig. 7.- Anthrenus isabellinus final larval instar case. 7a.- Dorsal aspect (scale bar = 1 mm). 7b.- Lateral aspect (scale bar = 1 mm). 7c.- Head capsule (scale bar = 1 mm). 7d.- Arrow-headed hastisetae on terminal segments (scale bar = 100 µm).
Fig. 4.- Anthrenus amandae. 4a in Behavioural and feeding observations of some Anthrenus Geoffroy, 1767 species (Coleoptera, Dermestidae) and identification using final larval instar cases
Fig. 4.- Anthrenus amandae. 4a.– Quiescent in final larval instar case. 4b.– Rotation in final larval instar case to split sutures in head capsule to facilitate eclosion. Scale bars = 1 mm in both cases.
Fig. 1.- Dorsal aspect. 1a.- Anthrenus amandae. 1b.- Anthrenus angustefasciatus. 1c in Behavioural and feeding observations of some Anthrenus Geoffroy, 1767 species (Coleoptera, Dermestidae) and identification using final larval instar cases
Fig. 1.- Dorsal aspect. 1a.- Anthrenus amandae. 1b.- Anthrenus angustefasciatus. 1c.- Anthrenus isabellinus. Scale bar = 1 mm in all cases.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.