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34 results for “Limnesiidae”
FIGURE 9 in Water mites of the genus Limnesia Koch, 1836 (Acari: Hydrachnidia, Limnesiidae) from China, with description of four new species
FIGURE 9. Limnesia undulata (Müller, 1776). A—idiosoma, ventral view, male, B—idiosoma, dorsal view, male, C – idiosoma, ventral view, female, D—genital field, female, E—genital field, male, F—chelicera, lateral view, male, Ginfracapitular, lateral view, male, H—palp, lateral view, male, I—palp, lateral view, female, J—I-L-5,6, female. K—III- L-6, female, L—IV-L-5, 6, female, M –IV-L-5, 6, male, Bars = 100Μm.
FIGURE 2A–C. Protolimnesia longa Besch, 1963 in A redescription of Protolimnesia longa Besch, 1963 from Bolivia, with the first description of the female (Acari: Hydrachnidia: Limnesiidae)
FIGURE 2A–C. Protolimnesia longa Besch, 1963, female: A = coxal and genital field; B = palp, medial view; C = dorsal posteromedial plate. Scale bars = 100 µm.
FIGURE 1A–G. Protolimnesia longa Besch, 1963 in A redescription of Protolimnesia longa Besch, 1963 from Bolivia, with the first description of the female (Acari: Hydrachnidia: Limnesiidae)
FIGURE 1A–G. Protolimnesia longa Besch, 1963, male: A = idiosoma, dorsal view; B = coxal and genital field; C = IV-L-6; D = palp, medial view; E = palp, lateral view; F = ejaculatory complex posterior, G = ejaculatory complex anterior. Scale bars = 100 µm.
FIGURE 3A–B in A redescription of Protolimnesia longa Besch, 1963 from Bolivia, with the first description of the female (Acari: Hydrachnidia: Limnesiidae)
FIGURE 3A–B. Unnamed ephemeral stream the Sacaba area (Cochabamba, Bolivia) during the dry (June 2014, Fig. A) and wet (February 2015, Fig. B) season.
Figure 10 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 10 Organization of podocephalic glands in unfed larvaeL. maculata.TEM. a – Transformation of the end-piece of coxal gland into the bladder in longitudinal section and formation of a cuticle of the bladder arrows(). Scale bar – 2 μm; b – Formation of the cuticle of the bladder above short microvilli of the duct-forming cells (arrow). Scale bar – 1 μm; c – Concentration and joining of glands' ducts at the caudal end of the epistomal apodeme. Scale bar – 5 μm; d – The gnathosomal base in transverse section showing posterior portions of the subcheliceral cavity (arrows). Scale bar – 10 μm. amg – anterior medial gland; bl – bladder; cha – cheliceral apodeme; d – duct; dfc – duct-forming cell; epa – epistomal apodeme; glc – gland cell; gll – gland lumen; m – mitochondria; ms – muscles; n – nucleus; ph – pharynx; pmg – posterior medial gland.
Figure 9 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 9 Organization of labyrinth (a-b) and end-piece (c-d) of coxal glands in unfed larvae L. maculata.TEM. a – Basal portion of the gland cells bordering the brain containing a large residual body and an extensive stack of RER. Note septate junction between the adjacent cells (arrow). Scale bar – 1 μm; b – Portion of the labyrinth with a collapsed lumen and muscle fiber applying to the gland wall. Scale bar – 2 μm; c – Nerve termination with synaptic vesicles at the gland wall. Scale bar – 0.5 μm; d – Transverse section through the end-piece with a dilated lumen without microvilli. Note particular membrane profiles in the basal cell portion (arrow). Scale bar – 2 μm. bl – basal lamina; blm – basal lamina; br – brain; gll – gland lumen; h – hemacoelic space; m – mitochondria; mg – midgut; ms – muscles; mt – microtubules; mv – microvilli; n – nucleus; nu – nucleolus; rb – residual body; rer – rough endoplasmic reticulum: sv – synaptic vesicles.
Figure 6 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 6 Lateral podocephalic glands in unfed larvaeL. maculata.TEM. a – Collapsed gland with apparent cisterns of endoplasmic reticulum and irregularly shaped vacuoles. Scale bar – 2 µζ; b – Portion of the gland at higher magnification showing the large nucleus and ER cisterns. Note vacuole with a fine-structures matrix (arrow). Arrowheadindicates a smooth basal cell zone. Scale bar – 1 µζ; c – Enlarged highly vacuolated gland tightly applied to ventral gland from above in longitudinal section. Scale bar – 5 μm; d – Central gland portion of the same gland indicating expanded intra-alveolar lumen. Arrows point to microvilli of the duct-forming cells. Scale bar – 1 μm; e – Duct base of the gland. Scale bar – 1 µζ. dfc – duct-forming cell; du – duct; dw – duct wall; er – endoplasmic reticulum; ey – eye; ial – intra-alveolar lumen; lg – lateral gland; m - mitochondria; mg – midgut; ms – muscle; n – nucleus; nu – nucleolus; v – vacuole; vg – ventral gland.
Figure 5 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 5 Ventral podocephalic glands in unfed larvaeL. maculata.TEM. a – Compact ventral gland at the medial wall of the bladder of a coxal gland. Scale bar – 5 μm; b – Central portion of ventral gland. Note extensions of duct-forming cells flanking lacunas of the intra-alveolar lumen (arrows) and microvilli of these cells penetrating the lumen (arrowheads). Scale bar – 2 μm; c – Ventral gland on longitudinal section showing the intra-alveolar lumen. Note reinforcing bundles of fibrils within the electron-clear duct wall (arrows). Scale bar – 2 μm; d – Intra-alveolar lumen encompassed by duct-forming cells with short irregular microvilli (arrows) penetrating the lumen. Scale bar – 1 μm; e – Portion of the intra-alveolar lumen showing duct-forming cells contacting via septate junctions (arrows). Arrowheadsindicate microvilli of the duct-forming cells. Scale bar – 0.5µζ. bl – bladder; dfc – duct-forming cell; ey – eye; ial – intra-alveolar lumen; lg – lateral gland; m – mitochondria; ms – muscles; n – nucleus; nu – nucleolus; sg – secretory granules; vg – ventral gland.
Figure 3 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 3 Medial podocephalic glands in unfed larvaeL. maculata.TEM. a – Central gland portion with the intra-alveolar lumen. Scale bar – 2 μm; b – Peripheral gland portion with nucleus and heterogeneous secretory granules bordering midgut. Note flat basal plasma membrane of the gland cell facing the midgut (arrow). Scale bar – 2 μm; c – Middle gland portion with the duct base. Note a fine-granular substance within the duct lumen (arrow). Scale bar – 1 μm; d – Basal cells portion appressed with the brain. Note flat basal plasma membrane of the gland cell and the flat basal lamina (arrow). Note also single ribosomes of the vesicle membrane (arrowhead). Scale bar – 1 μm; e – Border between the anterior medial and ventral glands with practically imperceptible basal lamina between them (arrow). Note the basal lamina between the glands and the brain (arrowhead). Scale bar – 0.5 μm. amg – anterior medial gland; cv – clear vesicles; dfc – duct-forming cell; dw – duct wall; ial – intra-alveolar lumen; mg – midgut; n – nucleus; nu – nucleolus; sg – secretory granules; vg – ventral gland.
Figure 2 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 2 Podocephalic glands in unfed larvaeL. maculataon sagittal (a) and transverse section on the level of brain and pharynx (b). TEM. a – Podocephalic glands on section slightly apart from the axial line. Scale bar – 20 μm; b – Mixed association of glands and ducts above and sides of the brain. Note the collapsed distal bladder of the coxal gland (not seen on this section) on the right-hand side. Scale bar – 20 μm. – anterior medial gland; bl – bladder; br – brain; ial – intra-alveolar lumen; lg – lateral gland; mg – midgut; ms – muscles; pc – podocephalic canal; ph – pharynx; pmg – posterior medial gland; vg – ventral gland.
Figure 7 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 7 Coxal gland in unfed larvaL. maculata.TEM. Longitudinal section of the larva showing the whole gland length composed of the two tightly opposed tubes/ labyrinth surrounded by different body tissues. Scale bar – 10 μm. bl – bladder; br – brain; cgl – coxal gland; eye; mg – midgut; ms – muscles; neph – nephrocytes.
Figure 4 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 4 Ventral podocephalic glands in unfed larvaeL. maculata. TEM. a – General view of the gland bordering the anterior medial gland and the brain. Note flat margins of the gland facing neighboring organs (arrows). Scale bar – 5µζ; b – Border of the ventral and the anterior medial glands showing flat basal plasma membranes with the absence of the noticeable basal lamina (arrows). Arrowheadspoint to microvilli on the apical cell surface facing the intra-alveolar lumen. Note that the duct –forming cells also bears microvilli interdigitating within the lumen. Scale bar – 1µζ. amg – anterior medial gland; br – brain; cv – clear vesicles; dfc – duct-forming cell; ial – intra-alveolar lumen; n – nucleus; sg – secretory granules; vg – ventral gland.
Figure 11 in Ultrastructure of the prosomal gland complex in unfed larvae of the fresh-water mite Limnesia maculata (Müller, 1776) (Acariformes, Limnesiidae)
Figure 11 Schematical drawing illustrating relative disposition of prosomal glands in unfed larvaeL. maculataof one body side in longitudinal projection. Both medial gland are shown. amg – anterior medial gland; bl – bladder; br – brain; cgl – coxal gland; lg – lateral gland; mg – midgut; mp mouthparts; pmg – posterior medial gland; vg – ventral gland.
Figure 1 in New records of water mites of the family Limnesiidae Thor from Australia (Acari: Hydrachnidia), with the description of seven new species
Figure 1 Limnesia (Limnesia) babinda Cook, venter female. Scale bar = 100 µm.
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