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70 results for “Oecanthus”
FIGURE 2 in Patterns of ecology and distribution of the tree crickets Oecanthus dulcisonans and O. pellucens (Orthoptera: Gryllidae; Oecanthinae) in southern Italy
FIGURE 2. Difference in elevation (a) and minimum winter temperature (b) between observations of O. dulcisonans and O. pellucens. Median is represented as a bold line crossing the box (between 25° and 75° percentile). Whiskers are between 1° and 99° percentile and outliers are represented as free circles.
FIGURES 13–22 in A novel multiple sex chromosome system in Orthoptera, found in the tree cricket Oecanthus rubromaculatus Zefa, 2022 (Grylloidea, Oecanthidae)
FIGURES 13–22. Schematic model showing the phases of karyotypic derivation since the ancestral karyotype of 2n = 21, X0♂/ XX♀ based com Oecanthus pictus, from to 2n = 12, X1X2X3Y1Y2Y3♂/X1X1X2X2X3X3♀ of the Oecanthus rubromaculatus. 13, Ancestral karyotype with 2n = 21, X0♂/XX♀; 14, Heterozygous karyotype with 2n = 18, X0♂ after Robertsonian translocation between pair 4/5, 6/7 and 8/9; 15–16, Homozygous karyotype with 2n = 15, X0♂ after reciprocal translocation between pair 4/5, 6/7 and 8/9 (chromosomes in the box are involved in tandem fusion to form the neo-XY sex-system); 17–18, Karyotype with 2n = 14, neo-XY♂ (chromosomes in the box are involved in Robertsonian translocation to form the neo-X1X2Y♂ sex-system); 19–20, Karyotype with 2n = 13, X1X2Y♂ (chromosomes in the box are involved in Robertsonian translocation to form the neo-X1X2Y1Y2♂ sex-system found in individuals from São Francisco de Paula); 21–22, Karyotype with 2n = 12, X1X2Y1Y2♂ (chromosomes in the box are involved in translocation to form the neo-X1X2X3Y1Y2Y3♂ sex-system found in individuals from Pelotas). Chromosome breakpoints for rearrangements were indicated with yellow lines; L = small centromeric chromosome lost in the process.
FIGURES 9–12 in A novel multiple sex chromosome system in Orthoptera, found in the tree cricket Oecanthus rubromaculatus Zefa, 2022 (Grylloidea, Oecanthidae)
FIGURES 9–12. Chromosomes of Oecanthus rubromaculatus from Pelotas. 9, Male karyotype with 2n = 12, X 1 X 2 X 3 Y 1 Y 2 Y 3. 10, Initial Diplotene stage highlighting the heteropycnotic X chromosome, distanced from the other sex chromosomes by a chromatin thread (arrow); 11, Diplotene stage with emphasis on the sex chromosome chain; 12, Sister Metaphases II.
FIGURES 1–8 in A novel multiple sex chromosome system in Orthoptera, found in the tree cricket Oecanthus rubromaculatus Zefa, 2022 (Grylloidea, Oecanthidae)
FIGURES 1–8. Chromosomes of Oecanthus rubromaculatus from São Francisco de Paula. 1, karyotype of the female with 2n = 12, X1X1X2X2 (Best mitotic Metaphase found, but missing one of the bivalents from pair 4); 2, complete female mitotic Metaphase; 3–5, Male's Diplotene stages highlighting the heteropycnotic X chromosome, distanced from the other sexchromosomes by a chromatin thread (arrow); 6, Metaphase I; 7, Anaphase I; 8, Sister Metaphases II.
FIGURES 25–26 in New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Grylloidea) from Southern Brazilian Atlantic Forest, with bioacoustics
FIGURES 25–26. Photographs of Oecanthus rubromaculatus n. sp. in the field. 25–Male stridulating at leaf edge. 26—Male feeding the female during copulation with secretions of the metanotal gland. Photos by Riuler Corrêa Acosta.
FIGURES 12–14 in New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Grylloidea) from Southern Brazilian Atlantic Forest, with bioacoustics
FIGURES 12–14. Metanotal gland of Oecanthus rubromaculatus n. sp. 12—Dorsal view; 13—Lateral view; 14—Metanotal gland posterior median lobe. Conventions: Sc—scutum; St—scutellum; pml—posterior median lobe; Scp—scutum protuberance; Stp—scutellum protuberance; a—tuft of bristles projected inward; b—tuft of bristles projected posteriorly.
FIGURES 10–11 in New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Grylloidea) from Southern Brazilian Atlantic Forest, with bioacoustics
FIGURES 10–11. Tegmen of Oecanthus rubromaculatus n. sp. 10–Right tegmen, dorsal view; 11–Stridulatory file with 30 teeth.
FIGURES 3–9 in New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Grylloidea) from Southern Brazilian Atlantic Forest, with bioacoustics
FIGURES 3–9. Male and Female morphological characteristics of Oecanthus rubromaculatus n. sp. after recent alcohol fixation. 3–Male head and thorax, dorsal views; 4–Male head, dorsal view; 5–Male subgenital plate, ventral view; 6–Female supranal plate, dorsal view; 7–Female subgenital plate, ventral view; 8–Ovipositor apex, dorsal view; 9–Ovipositor apex, ventral view.
FIGURES 1–2 in New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Grylloidea) from Southern Brazilian Atlantic Forest, with bioacoustics
FIGURES 1–2. Habitus of Oecanthus rubromaculatus n. sp. in vivo. 1–male Holotype, dorsal view; 2–female paratype (05FSFP), dorsal view.
FIGURES 20–24 in New species of tree cricket Oecanthus Serville, 1831 (Orthoptera: Grylloidea) from Southern Brazilian Atlantic Forest, with bioacoustics
FIGURES 20–24. Spectrogram of the calling and courtship song of Oecanthus rubromaculatus n. sp. 20—Sonogram of the calling song with regular train of chirps; 21—Sonogram of the calling song with irregular train of chirps; 22—Sonogram of the courtship song; 23—Oscillogram of the calling song; 24—Oscillogram of the courtship song.
FIGURES 16–19 in Oecanthus buxixu sp. nov. (Orthoptera: Grylloidea: Oecanthidae): A new species of tree cricket from Brazilian Amazon rainforest
FIGURES 16–19. Spectrogram of the calling song of Oecanthus buxixu sp. nov. 16, Sonogram of the calling song registered in the field; 17, Sonogram of the calling song registered in the Lab.; 18, Oscillogram of the calling song registered in the Lab; 19, peak frequency.
FIGURES 20–24 in Oecanthus buxixu sp. nov. (Orthoptera: Grylloidea: Oecanthidae): A new species of tree cricket from Brazilian Amazon rainforest
FIGURES 20–24. Photographs of Oecanthus buxixu sp. nov. in the field. 20, Adult male; 21, Adult female; 22, Nymph f; 23, Adult female feeding; 24, shrub Clidemia japurensis (buxixu). Photos by Mendes, D.M.M.
FIGURES 1–15 in Oecanthus buxixu sp. nov. (Orthoptera: Grylloidea: Oecanthidae): A new species of tree cricket from Brazilian Amazon rainforest
FIGURES 1–15. Male and Female morphological characteristics of Oecanthus buxixu sp. nov. after alcohol fixation. 1–3, Male in dorsal, ventral and lateral view; 4, Part of head in dorsal view, with scape and pedicel in ventral view; 5, Male terminalia in ventral view, showing subgenital plate and cerci; 6, Male supranal plate, dorsal view; 7, Female terminalia in dorsal view, showing supranal plate; 8, Tibia III serrulate, with four inner and three outer subapical spurs (*); 9, Tibia III apex, with three outer apical spurs (a, b, c); 10, Tibia III apex, with four inner apical spurs (d, e, f, g); 11, Ovipositor apex, ventral view; 12, Male metanotal gland, dorsal view; 13, Male right tegmina, ventral view; 14, Phallic sclerites, ventral view; 15, Phallic sclerites, dorsal view. Conventions: sp—scape, pd—pedicel, Sc—scutum, St—scutellum, pml—posterior median lobe, MLophi—median lophi of pseudepiphallus; PsAp—pseudepiphallic apodema; r—rami; Arc—ectophallic arc; EctF—ectophallic fold; EctVp— ectophallic invagination ventral projection; EctAp—ectophallic apodema; End—endophalus.
FIGURE 3. A in Recognizing taxonomic units in the field-The case of the crickets Oecanthus dulcisonans Gorochov 1993, and O. pellucens (Scopoli, 1763) (Orthoptera: Gryllidae): implications for their distribution and conservation in Southern Europe
FIGURE 3. A, ventral view of Oecan- FIGURE 4. Oscillograms and sonograms of Oecanthus dulcisothus pellucens (p) and O. dulcisonans nans (A,C,E,G,I) and O. pellucens (B,D,F,H,J). AB, oscillograms (d). B, details of the sternum of both of 10 seconds of calling song at 21ºC in identical housing condispecies (p) and (d). tions. CD, one second oscillogram including a full echeme of O.
FIGURE 1 in Recognizing taxonomic units in the field-The case of the crickets Oecanthus dulcisonans Gorochov 1993, and O. pellucens (Scopoli, 1763) (Orthoptera: Gryllidae): implications for their distribution and conservation in Southern Europe
FIGURE 1. Epiphallus of Oecanthus dulcisonans FIGURE 2. Differences in tegmen length between from Almería, Spain (da, above; db, below) and O. pel- O. dulcisonans and O. pellucens. Line in box reprelucens from Toledo, Spain (p, above; pb, below). senting the median, extreme of the boxes, quartile
Figs 18-20 from: Collins N, Schneider KR (2020) Oecanthus salvii sp. nov. (Orthoptera: Gryllidae: Oecanthinae): A new tree cricket species from Modoc County in northeast California. Journal of Orthoptera Research 29(1): 91-99. https://doi.org/10.3897/jor.29.50400
Figs 18-20 Sage tree cricket. 18. Adult male; 19. Adult female; 20. Raised tegmina of male preparing to sing.
Fig 29 from: Collins N, Schneider KR (2020) Oecanthus salvii sp. nov. (Orthoptera: Gryllidae: Oecanthinae): A new tree cricket species from Modoc County in northeast California. Journal of Orthoptera Research 29(1): 91-99. https://doi.org/10.3897/jor.29.50400
Fig 29 Seventeen-second waveform of two male sage tree crickets at 17.3°C. Areas of interest shown in Fig. 30a–e.
Figs 51-59 from: Collins N, Schneider KR (2020) Oecanthus salvii sp. nov. (Orthoptera: Gryllidae: Oecanthinae): A new tree cricket species from Modoc County in northeast California. Journal of Orthoptera Research 29(1): 91-99. https://doi.org/10.3897/jor.29.50400
Figs 51-59 Metanotal glands comparisons. 51.Oecanthus nigricornis; 52.O argentinus; 53.O. celerinictus; 54.O. forbesi; 55.O. salviisp. nov.; 56.O. quadripunctatus; 57.O. laricis; 58.O. pini; and 59.O. walkeri.
Figs 4-7 from: Collins N, Schneider KR (2020) Oecanthus salvii sp. nov. (Orthoptera: Gryllidae: Oecanthinae): A new tree cricket species from Modoc County in northeast California. Journal of Orthoptera Research 29(1): 91-99. https://doi.org/10.3897/jor.29.50400
Figs 4-7 Location of Oecanthus salviisp. nov. discovery. 4. Road to Lake Annie; 5. Eastern edge of lake with foot of Lake Annie Mountain; 6. Western edge of lake; and 7. Cattle drive along western shore.
Figs 37-42 from: Collins N, Schneider KR (2020) Oecanthus salvii sp. nov. (Orthoptera: Gryllidae: Oecanthinae): A new tree cricket species from Modoc County in northeast California. Journal of Orthoptera Research 29(1): 91-99. https://doi.org/10.3897/jor.29.50400
Figs 37-42 Shapes of copulatory blades in (v)-ventral and (d)-dorsal views. 37.Oecanthus walkeri; 38.O. nigricornis; 39.O. quadripunctatus; 40.O. argentinus; 41.O. salviisp. nov.; and 42.O. celerinictus.
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