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356 results for “larval instar”
Fig. 1 in Head capsule width is useful for determining larval instar in Heilipus lauri (Coleoptera: Curculionidae)
Fig. 1. Frequency distribution of the head capsule widths (µm) of Heilipus lauri larvae. Graph generated by the Hcap program.
Fig. 2 in Head capsule width is useful for determining larval instar in Heilipus lauri (Coleoptera: Curculionidae)
Fig. 2. Linear regression relationship between the natural logarithm of the mean larval head capsule width and the instars of Heilipus lauri larvae.
Figure 4 in The coffee leaf miner, Leucoptera coffeella (Lepidoptera: Lyonetiidae): identification of the larval instars and description of male and female genitalia
Figure 4 External morphological characteristics of coffee leaf minerLeucoptera coffeella larvae. (A) Dorsal view of the larva body of the first larval instar. Arrow indicates primary seta. (B) Chewing mouthpiece of the second larval instar. Arrow indicates spine. (C) Ventral view of the third larval instar. Arrows indicate prolegs without crochets. (D) Ventral view of the fourth larval instar.Arrows indicate prolegs with crochets. (E) Ventral view of crochets in the shape of uniordinal circle in a fourth instar larva.Arrow indicates crochet. (F) Cephalic capsule of the fourth larval instar. Arrow indicates ecdysial line.
Figure 6 in The coffee leaf miner, Leucoptera coffeella (Lepidoptera: Lyonetiidae): identification of the larval instars and description of male and female genitalia
Figure 6 Leucoptera coffeella last abdominal segments. (A) Male last abdominal segment in ventral view, with a white bipartite segment. (B) Female last abdominal segment in ventral view, with a white tubular shape.
Figure 2 in The coffee leaf miner, Leucoptera coffeella (Lepidoptera: Lyonetiidae): identification of the larval instars and description of male and female genitalia
Figure 2 Leucoptera coffeella life cycle phases. (A) Egg Stage. (B) Larval stage. (C) Pupa stage. (D) Adult.
Figure 7 in The coffee leaf miner, Leucoptera coffeella (Lepidoptera: Lyonetiidae): identification of the larval instars and description of male and female genitalia
Figure 7 Leucoptera coffeella, male genitalia. (A) Tergite 8, coremata, sternite 8 and ejaculatory bulb ventral view. (B) Valva ventral view. (C) Gnathos ventral view. (D) Aedeagus dorsal view. Arrow indicates apex of aedeagus. C = coremata, T8 = tergite 8, S8 = sternite 8, b.e. = bulbus ejaculatorius, v = valva, g = gnathos.
Figure 3 in The coffee leaf miner, Leucoptera coffeella (Lepidoptera: Lyonetiidae): identification of the larval instars and description of male and female genitalia
Figure 3 Immatures of Leucoptera coffeella. (A) First instar larva. (B) Cephalic capsule of the first larval instar. Arrow indicates chewing mouthpiece. (C) Larva of the second instar. Arrow indicates first body segment. (D) Cephalic capsule of the second larval instar. (E) Larva of the third instar. (F) Cephalic capsule of the third larval instar. (G) Larva of the fourth instar. (H) Cephalic capsule of the fourth larval instar.
Fig. 3. Chlorota paulistana Ohaus, 1912 in Description of the last larval instar and pupa of Chlorota paulistana Ohaus, 1912 (Coleoptera: Melolonthidae: Rutelinae: Rutelini)
Fig. 3. Chlorota paulistana Ohaus, 1912; female pupa. (a) Dorsal, (b) ventral. dt9, ventral part of tergite IX; fg, female genital ampulla; s1–9, abdominal sternite I–IX; t1–9, abdominal tergite I–IX.
Fig. 2. Chlorota paulistana Ohaus, 1912 in Description of the last larval instar and pupa of Chlorota paulistana Ohaus, 1912 (Coleoptera: Melolonthidae: Rutelinae: Rutelini)
Fig. 2. Chlorota paulistana Ohaus, 1912; third larval instar; head appendages. (a–b) Mandibles, dorsal (left, right), (c–d) mandibles, ventral (right, left); (e–f) maxilla (ventral, dorsal), (g) mala, internal, (h) stipes stridulatory teeth detail; (i) labium, dorsal; (j) epipharynx. dto, dexiotorma, (l) detail of the corypha; nsi, sensorial cone; pto, pterotorma; sta, stridulatory area; ucg, uncus.
Figure 2 in Description of the larval instars of Amidorus immaturus (Mulsant, 1842) (Coleoptera: Scarabaeoidea: Aphodiidae)
Figure 2. Measures: a) X abdominal segment, P1 = pygidium length, P2 = pygidium width; b) side view, SV1 = external length, SV2 = internal length, SV3 = head length to clypeus, SV4 = head width by side, A1–A5 = abdominal segments' width; c) head, An = antenna length, H1 = head length, H2 = head width; d: thorax, T1–T3 = thoracic width.
Figure 7 in Description of the larval instars of Amidorus immaturus (Mulsant, 1842) (Coleoptera: Scarabaeoidea: Aphodiidae)
Figure 7. Larva of A. immaturus: a) raster, scale bar = 1 mm; b) X abdominal segment, scale bar = 0.5 mm.
Fig. 3. Proportions and 95 in Metamasius callizona (Coleoptera: Curculionidae): fertility and larval survival to the third instar in the laboratory
Fig. 3. Proportions and 95% confidence intervals for egg eclosion per 10 d from eggs laid inside leaves by Metamasius callizona. Confidence intervals were calculated using Wilson score intervals (α = 0.05; Wilson 1927).
Fig. 2 in Metamasius callizona (Coleoptera: Curculionidae): fertility and larval survival to the third instar in the laboratory
Fig. 2. Average number of eggs laid by Metamasius callizona inside, outside, and inside + outside the leaf by Metamasius callizona, with 95% confidence intervals for the first half and second half of the female reproductive periods.
Fig. 1 in Metamasius callizona (Coleoptera: Curculionidae): fertility and larval survival to the third instar in the laboratory
Fig. 1. Average number of eggs laid per leaf per Metamasius callizona female per 10 d (± SE) inside and outside leaves over time.
Figures 1-6. Phyllocnistis citrella larvae. 1. Sagittal and frontal section larval instar I, II in Histology and histochemistry of Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae) fat body during the post embrionary development
Figures 1-6. Phyllocnistis citrella larvae. 1. Sagittal and frontal section larval instar I, II, III. Hematoxilin- Eosin technique (HE). 2. Larva I: Parietal fat body (PFB) with trophocytes (t) showing irregular shape and basophilic cytoplasm with few droplets. (HE). 3. Larva II: Parietal fat body (PFB) made up of masses of trophocytes (t) with abundant cytoplasmic droplets. (HE). 4. Larva III: Spongy visceral fat body (VFB) in contact with the silk glands (SG). (HE). 5. Larva III: Fat body (FB) with big cumuli of Sudan Black positive lipidic droplets. Sudan Black technique (SB). 6. Larva III: Fat body (FB) with high concentration of neutral lipidic droplets surrounded by acid lipid granules of different sizes. Nile Blue technique (NB).
Figures 11–15. Stethon pectorosus collecting event. 11 in Eucnemid larvae of the Nearctic region. Part VI: Descriptions of the fifth instar and prepupal larval stages of Stethon pectorosus LeConte, 1866 (Coleoptera: Eucnemidae: Eucneminae: Mesogenini), with notes on their biology
Figures 11–15. Stethon pectorosus collecting event. 11) Rotten elm limb. 12) Exit holes. 13) Senior author preparing to split the limb. 14) Senior author splitting tree limb. 15) Adult cadaver in exit hole.
Figures 1–5. Stethon pectorosus, fifth instar. 1 in Eucnemid larvae of the Nearctic region. Part VI: Descriptions of the fifth instar and prepupal larval stages of Stethon pectorosus LeConte, 1866 (Coleoptera: Eucnemidae: Eucneminae: Mesogenini), with notes on their biology
Figures 1–5. Stethon pectorosus, fifth instar. 1) Dorsal habitus. Scale line = 5.0 mm. 2) Head, dorsal view. 3) Head and thoracic region, dorsal view. 4) Head and thoracic region, ventral view. 5) Abdominal segments VII-IX, ventral view. Scale line = 1.0 mm.
Figures 16–20. Stethon pectorosus collecting event and adult. 16 in Eucnemid larvae of the Nearctic region. Part VI: Descriptions of the fifth instar and prepupal larval stages of Stethon pectorosus LeConte, 1866 (Coleoptera: Eucnemidae: Eucneminae: Mesogenini), with notes on their biology
Figures 16–20. Stethon pectorosus collecting event and adult. 16) Prepupal larval stage in pupal cell. 17) Prepupal larval stage with purple- colored stain. 18) Collected fifth instar and prepupal larval stages. 19) Dorsal habitus. 20) Posterior habitus of adult illustrating deep, V-shaped exoskeletal cavities at elytral apices as indicated with white arrows. Scale line = 1.0 mm.
Figures 6–10. Stethon pectorosus, prepupal stage. 6 in Eucnemid larvae of the Nearctic region. Part VI: Descriptions of the fifth instar and prepupal larval stages of Stethon pectorosus LeConte, 1866 (Coleoptera: Eucnemidae: Eucneminae: Mesogenini), with notes on their biology
Figures 6–10. Stethon pectorosus, prepupal stage. 6) Dorsal habitus. Scale line = 5.0 mm. 7) Head, dorsal view. 8) Head and thoracic region, dorsal view. 9) Head and thoracic region, ventral view. 10) Abdominal segments VII- IX, ventral view. Scale line = 1.0 mm.
Figures 62–65. Microrhagus lecontei, fifth instar. 62 in Eucnemid larvae of the Nearctic region. Part V: Fifth instar larval descriptions for eight species of Microrhagus Dejean, 1833 (Coleoptera: Eucnemidae: Melasinae: Dirhagini), with descriptions of four new species and notes on their biology
Figures 62–65. Microrhagus lecontei, fifth instar. 62) Head, dorsal view of paratype. 63) Head and thoracic region, dorsal view of paratype. 64) Head and thoracic region, ventral view of paratype. 65) Abdominal segments VII–IX, ventral view of paratype.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.