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125 results for “Water bug”
Figs. 17–23 in First Inventory Of The Water Bugs (Heteroptera: Nepomorpha: Gerromorpha) Of Langkawi Island, Kedah, Malaysia
Figs. 17–23. Microvelia (Picaultia) minutissima, new species: 17, fore tibia and tarsus of male; 18, middle tibia and tarsus of male; 19, abdomen of macropterous male, lateralview; 20, abdomen of macropterous male, ventral view; 21, right paramere of male, lateral view; 22, abdomen of apterous female, dorsal view; 23, abdomen of apterous female, lateral view.
Fig. 1 in First Inventory Of The Water Bugs (Heteroptera: Nepomorpha: Gerromorpha) Of Langkawi Island, Kedah, Malaysia
Fig. 1. Map of Langkawi with sampling localities. Filled squares and circles = freshwater habitats; Unfilled squares and circles = marine habitats. Squares = collections by the authors; circles = other collections.
Figs. 13–16 in First Inventory Of The Water Bugs (Heteroptera: Nepomorpha: Gerromorpha) Of Langkawi Island, Kedah, Malaysia
Figs. 13–16. Strongylovelia narusei, new species. (13) Abdomen of apterous female (with corners of meso-metanotum), dorsal view. (14) Abdomen of apterous female, lateral view. (15) Paramere of male, lateral view. (16) Paramere of male, perpendicular view on apical part.
Figs. 7–12 in First Inventory Of The Water Bugs (Heteroptera: Nepomorpha: Gerromorpha) Of Langkawi Island, Kedah, Malaysia
Figs. 7–12. Hydrotrephes langkawicus, new species: 7, genal and pronotal plate; 8, ventromedian carina of thorax and abdomen, with variations of prosternal carina, mesosternal carina, and carinae of sternites 2 and 3; 9, aedeagus, right view; 10, right paramere, right view; 11, left paramere, right view; 12, sternite 7 of female, ventral view, pilosity omitted.
Fig. 24 in First Inventory Of The Water Bugs (Heteroptera: Nepomorpha: Gerromorpha) Of Langkawi Island, Kedah, Malaysia
Fig. 24. Comparison of species richness of selected families of Nepomorpha and Gerromorpha of Malaysian islands with those of mainland Malaysia.
Figs. 2–6 in First Inventory Of The Water Bugs (Heteroptera: Nepomorpha: Gerromorpha) Of Langkawi Island, Kedah, Malaysia
Figs. 2–6. Habitus of (2) Hydrotrephes langkawicus, new species (macropterous male, paratype). (3) Strongylovelia narusei, new species (apterous female, paratype). (4) Microvelia (Picaultia) minutissima, new species (apterous female, paratype). (5) Microvelia (Picaultia) minutissima, new species (macropterous male, holotype, right forewing broken off). (6) Frontal view of cephalonotum of Hydrotrephes langkawicus, new species (macropterous male, paratype).
Figure 1 in Short Communication Mass mortality of Giant Water Bug Lethocerus indicus (Lepeletiler & Serville, 1825) [Heteroptera: Belostomatidae] in Thiruvananthapuram, Kerala State, South India
Figure 1. The dead specimens of Lethocerus indicus (Lepeletiler & Serville, 1825).
Data from: A new approach to chromosomal evolution in the giant water bug (Heteroptera: Belostomatidae)
The genus Belostoma, known colloquially as 'giant water bugs', presents striking cytogenetic diversity and extensive chromosome variability. Notwithstanding, its karyotype evolution is not well understood. We analyzed eight species of Belostoma (77 samples). The meiotic analysis revealed 2n=14+XY for B. horvathi and B. candidulum; 2n=22+XY for B. cummings; 2n=26+X1X2Y for B. dentatum, B. elongatum, and B. discretum; and 2n=26+X1X2X3Y for B. testacopallidum and B. dilatatum. All species showed holokinetic chromosomes. Based on heterochromatin distribution patterns and 18S rDNA, the species of the genus Belostoma were separated into four groups. The analysis of C0t-1 DNA showed that the repetitive DNA, partly composed of microsatellite DNA, was absent on the Y chromosome. FISH using a microdissected X chromosome in species with simple sex system presents uniform hybridization in the nuclear region corresponding to the X chromosome. Species with multiple systems revealed discrete markings. The present data in conjunction with the existing literature led us to propose a new evolutionary hypothesis for the group, with an ancestral karyotype with a low diploid number, simple sex determination system, and Nucleolus Organizer Regions (NORs) on the sex chromosomes. That karyotype would have originated other karyotypes through agmatoploidy, simploidy, heterochromatinization, and movement of the 18S rDNA.
FIGURE 4 in A giant water bug from the Lower Cretaceous Crato Formation of Brazil (Heteroptera: Belostomatidae: Lethocerinae)
FIGURE 4. Lethocerus vetus sp. n., paratype R 63882, photograph of habitus (scale bar represents 10 mm).
FIGURE 1 in A giant water bug from the Lower Cretaceous Crato Formation of Brazil (Heteroptera: Belostomatidae: Lethocerinae)
FIGURE 1. Lethocerus vetus sp. n., holotype i 9560, photograph of general habitus (scale bar represents 10 mm).
FIGURE 3 in A giant water bug from the Lower Cretaceous Crato Formation of Brazil (Heteroptera: Belostomatidae: Lethocerinae)
FIGURE 3. Lethocerus vetus sp. n., holotype i 9560, photograph of abdomen, white arrow, suturelike fold dividing abdominal sternites V–VI; black arrow, spiracle; double black arrow, mesal margin of ventral laterostergite (scale bar represents 10 mm).
FIGURE 2 in A giant water bug from the Lower Cretaceous Crato Formation of Brazil (Heteroptera: Belostomatidae: Lethocerinae)
FIGURE 2. Lethocerus vetus sp. n., holotype i 9560, photograph of hind leg (scale bar represents 10 mm).
FIGURES 11–14 in Aphelocheirus (s. str.) bruneiensis sp. n., a new benthic water bug (Hemiptera: Heteroptera: Aphelocheiridae) from Brunei, and a key to Bornean Aphelocheirus
FIGURES 11–14. Dorsal aspects of some Bornean species of Aphelocheirus (all specimens from the collection of the Natural History Museum Vienna). (11) A. kelabitensis, brachypterous male paratype from Kelabit Highland, Sarawak (body length 7.2 mm). (12) A. kinabalu, brachypterous female from Mt. Kinabalu, Sabah (body length 8.9 mm). (13) A. kinabalu, macropterous male from Kelabit Highland, Sarawak (body length 8.2 mm; genital capsule dissected). (14) A. kodadai, brachypterous female paratype from Crocker Range, Sabah (body length 7.6 mm). © NHMW Hemiptera Image Collection, published with permission.
FIGURES 5–10 in Aphelocheirus (s. str.) bruneiensis sp. n., a new benthic water bug (Hemiptera: Heteroptera: Aphelocheiridae) from Brunei, and a key to Bornean Aphelocheirus
FIGURES 5–10. Aphelocheirus bruneiensis sp. n., holotype, male. (5) Mesosternal carina (mstc) and propleuron (ppl), ventrolateral (slightly caudal) aspect. (6) Genitalia, dorsal aspect, after removing the parameres: aed - mainpiece of aedeagus with bulbous outgrowths on both sides; lpa – left parandrium; pyg – pygophore, rpa – right parandrium. (7, 8) Left paramere, approximately dorsal and ventral aspects. (9, 10) Right paramere, approximately ventral and dorsal aspects.
FIGURES 1–4 in Aphelocheirus (s. str.) bruneiensis sp. n., a new benthic water bug (Hemiptera: Heteroptera: Aphelocheiridae) from Brunei, and a key to Bornean Aphelocheirus
FIGURES 1–4. Aphelocheirus bruneiensis sp. n. (1) Habitus of holotype, brachypterous male (body length 6.1 mm), dorsal aspect. (2) Habitus of paratype, macropterous male (body length 6.1 mm), dorsal aspect. (3) Habitus of paratype nymph (body length 5.1 mm), dorsal aspect. (4) Type locality. 1–3: © NHMW Hemiptera Image Collection, published with permission. 4: photo by © Stephen Moore.
FIGURE 3 in Checklist of water bugs (Hemiptera: Heteroptera: Nepomorpha, Gerromorpha) of Slovakia
FIGURE 3. Distribution of sampling sites (histograms) according to elevation, water conductivity and pH. The sampling effort (circles) represents number of sampling sites standardized by the area of the respective elevational belt. Note that unequal number of sampling sites among plots reflects different availability of environmental data.
FIGURE 5 in Checklist of water bugs (Hemiptera: Heteroptera: Nepomorpha, Gerromorpha) of Slovakia
FIGURE 5. Sample-based rarefaction curve of water bug diversity in Slovakia. The numbers in parentheses are the sample size and the observed total number of species (coordinates of black circle). Gray area represents the 95% confidence envelope of the estimate.
FIGURE 2 in Checklist of water bugs (Hemiptera: Heteroptera: Nepomorpha, Gerromorpha) of Slovakia
FIGURE 2. Map of Slovakia with the location of sites with recorded presence of water bugs (circles). Only sites with clearly identifiable coordinates were plotted (93% of all sites). Bioregions are distinguished by colour; Pannonian bioregion—light gray and Carpathian bioregion—white.
FIGURE 1 in Checklist of water bugs (Hemiptera: Heteroptera: Nepomorpha, Gerromorpha) of Slovakia
FIGURE 1. Histogram showing number of surveyed studies on water bugs in Slovakia and cumulative number of species. Note that the work of Bartholomaeides (1808) mentioning two genera (Notonecta and Nepa) is not included.
FIGURE19–25 in The creeping water bugs (Hemiptera: Heteroptera: Naucoridae) of China, with description of a new species
FIGURE19–25. Cheirochela grossa sp. nov. 19–21: right paramere in different views; 22–23: aedeagus in different views; 24: dorsomedial process of male genital capsule; 25: Ventral view of posterior abdominal segments of female. Scale bar = 0.5 mm.
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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.