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10 results for “Acanthoniscus”
Figure 7 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 7.Pleopods of a male Acanthoniscus richardsonae sp. nov. A, First pleopod; B, detail of first pleopod endopodite tip; C, detail of first pleopod exopodite; D, second pleopod, with detail of the two setae on exopodite outer margin (arrow); E, third pleopod exopodite; F, detail of the outer-basal region of the third pleopod exopodite showing the respiratory structures (thick arrow indicates the position of the spiracle); G, detail of the outer-basal region of the third pleopod exopodite showing the spiracle partially closed from above; H, fourth pleopod exopodite; I, fifth pleopod exopodite. Abbreviations: endopodite (en) and exopodite (ex). Scale bars = 0.5 mm (A–H), 0.25 mm (I).
Figure 8 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 8. Selected body parts of Acanthoniscus for comparison with other taxa within Armadillidae. Cubaris murina Brandt, 1833, showing the ground pattern in Armadillidae (A–E): A, Posterior region of the body in dorsal view; B, posterior region of the body in ventral view; C, pleotelson in dorsal view; D, uropod in dorsal view; E, middle region of the sternite 7 of a male showing the bilobed caudal process on the posterior margin, which is considered an autapomorphy of Armadillidae. Acanthoniscus richardsonae sp. nov. (F–H): F, pleotelson in dorsal view; G, uropod in dorsal view; H, middle region of the sternite 7 of a male. Drawings of the pleotelson and uropods in dorsal views of some morphologically divergent taxa within Armadillidae. I, Echinodillo cavaticus Green, 1963; J, Echinodillo montanus Jackson, 1933; K, Laureola vietnamensis Kwon, Ferrara and Taiti, 1992; L, Laureola dubia Schmalfuss and Ferrara, 1983; M, Schismadillo rouxi Verhoeff, 1926; N, Merulanella wahrbergi Verhoeff, 1926; O, Nesodillo incisus Verhoeff, 1926. Drawings modified from Verhoeff (1926) (M–O), Jackson (1933) (J), Green (1963) (I), Schmalfuss and Ferrara (1983) (L), and Kwon et al. (1992) (K). Abbreviations: endopodite (en), exopodite (ex), sympodite (sy).
Figure 4 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 4. Body parts of Acanthoniscus richardsonae sp. nov. A, Overall, dorsal view; B, detail of the microsculpture of the dorsal tegument (left) and tricorn-like setae (right); C, lateral view of the anterior region of the body; D, lateral view of the posterior region of the body; E, right pleon-epimera 3–5 in ventral view; F, right pereon-epimera 1–7 in ventral view; G, detail of pereon-epimera 1–2 in a more ventral position; H, cephalothorax in dorsal view; I, cephalothorax in frontal view (the tiny sensory setae inserted between the ommatidia are illustrated under a magnification of 400×: a, b, c); J, cephalothorax in ventral view; K, pleotelson and uropods in dorsal view (the uropod exopodites are slightly pointing upward); L, pleotelson and uropods in ventral view; M, right uropod in ventral view; N, right uropod in dorsal view; O, drawing of the overall dorsal view modified from Richardson (1909); P, arrangement of dorsal spines, the diameters of the circles correspond to the relative size of the spines. Drawings of the corresponding structures modified from Richardson (1909) are included in I, J (the question mark means that the position representing the drawing is not totally clear) and in M. Abbreviations: sympodite (sy), endopodite (en), and exopodite (ex). Scale bars = 1 mm (A–L), 0.5 mm (M–N); in some cases, a single scale bar applies to more than one figure (indicated by the letters above the scale bar).
Figure 5 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 5.Other appendages of Acanthoniscus richardsonae sp. nov. A, Second antenna; B, detail of flagellum of second antenna depicting position of aesthetasc groups (small arrows); C, detail of the distal article of the flagellum of the second antenna slightly turned over showing the aesthetasc groups; D, detail of the distal-most portion of the flagellum of the second antenna showing the apical cone; E, first antenna; F, detail of the third article of the first antenna showing the aesthetascs; G, male left seventh pereiopod; H, detail of ischium of male seventh pereiopod; I, detail of dactylus of male seventh pereiopod in anterior view; J, detail of dactylus of male seventh pereiopod in posterior view; K, male left first pereiopod, showing the areas on the carpus and propodus covered with the cleaning apparatus or antennal brush (dashed outlines); L, detail of carpus of male first pereiopod (anterior surface). Abbreviations: basis (bs), ischium (is), merus (me), carpus (ca), propodus (pr), flagellum (fl), and dactylus (da). Drawing of the corresponding structure modified from Richardson (1909) is included in A. Scale bars = 1 mm (A), 0.5 mm (G, K), 0.3 mm (B), 0.1 mm (C–E, H–J, L), 0.05 mm (F).
Figure 1 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 1. Distribution of the genus Acanthoniscus in Jamaica. Above: type locality of A. spiniger at the hills near Bluefields (yellow dot), the type locality of A. richardsonae sp. nov. in the Blue Mountains (red dot), and a second location in the Blue Mountains where a specimen presumably of A. richardsonae sp. nov. was photographed (orange dot). The main collection sites of Henry G. Hubbard in 1877 are depicted by green dots, notice the proximity of Stony Hill to the distribution of A. richardsonae sp. nov. Below: The hills known as Surinam Quarters near Bluefields, referred by Gosse (1851) as "Bluefields Mountain," Westmoreland Parish, constitute the type locality of A. spiniger.
Figure 2 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 2. Body parts of Acanthoniscus spiniger (female holotype BMNH 1973.478.1). A, Overall, dorsal view; B, overall, ventral view; C, right pereon-epimera 1–7 in ventral view; D, overall, lateral view; E, right pleon-epimera 3–5 in ventral view; F, overall, frontal view; G, cephalothorax in dorsal view; H, cephalothorax in frontal view; I, cephalothorax in ventral view; J, pleotelson and uropods in dorsal view; K, pleotelson and uropods in ventral view; L, right uropod in ventral view; M, arrangement of dorsal spines, the diameters of the circles correspond to the relative size of the spines. Drawings of the corresponding structures modified from Kinahan (1859) are included in J and L. Abbreviations: sympodite (sy), endopodite (en), and exopodite (ex). Scale bars = 1 mm (A–K), 0.5 mm (L). Original photographs by The Trustees of the BMNH.
Figure 3 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 3. Right lateral view of a female paratype Acanthoniscus richardsonae sp. nov. showing coloration in alcohol. Scale bar = 1 mm.
Figure 10 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 10. Specimen of Acanthoniscus cf. richardsonae sp. nov. observed near Hardwar Gap, Blue and John Crow Mountains National Park, Portland Parish. These are the only available photographs of a live specimen of the genus Acanthoniscus. Photos by Sarah C. Crews.
Figure 9 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 9. Habitat of Acanthoniscus richardsonae sp. nov. in the Blue Mountains, eastern Jamaica. Photo by Carlos Víquez.
Figure 6 in Taxonomy of the enigmatic genus Acanthoniscus Gosse, 1851 (Isopoda: Oniscidea: Armadillidae), from Jamaica, with the description of a new species
Figure 6. Mouthparts of Acanthoniscus richardsonae sp. nov. A, Distal portion of right (R) and left (L) mandibles in anterior views, showing lacinia mobilis (lm), hairy lobe (hl), penicils (pn), and tuft of setae (ts); B, first maxilla, with detail of distal portion of outer endite (ex) and inner endite (en); C, second maxilla; D, detail of the distal-most portion of the second maxilla; E, hypopharynx; F, detail of the median region of hypopharynx; G, maxilliped; H, detail of the distal-most portion of maxilliped in posterior view; I, detail of the distal-most portion of maxilliped in anterior view. Drawings of the corresponding structures modified from Richardson (1909) are included in B, C, and G. Scale bars = 0.25 mm.
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