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46 results for “Ameronothridae”
Figure 7 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 7 Paraquanothrus grahamin. sp., juveniles (legs and faint leathery patches omitted): A – larva, dorsal view; B – larva, ventral view; C – protonymph hysterosoma, ventral view; D – deutonymph hysterosoma, ventral view; E – tritonymph, dorsal view; F– tritonymph, ventral view. Scale bars 100 μm; A-D to same scale (slightly flattened during preparation), E, F to same scale. Abbreviations (other than setae and lyrifissures): AD – adanal valve; AN – anal valve; δ – line of dehiscence;Cl – Claparède's organ;hyr – hyaline region of prodorsum;PS – pseudanal valve. For coxisternal setae, see Remark 15.
Figure 10 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 10 Paraquanothrus spoonerin. sp., transmitted light micrographs of dissected or sectioned (except C) adults: A – prodorsum, dorsal view (notogaster removed); B – lateral view of mid-region; C – lateral view (* indicates approximate level of section D); D – partial cross- section, showing notogastral tectum; E – notogastral setaelm, dm and tuberculate surface (insert = base ofh1); F – posterior view, showing dark band of notogastral tectum and postanal struts (by transparency); G – ventral view of anal plates and preanal organ (surface focus); H
Figure 16 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 16 Adults of species of Aquanothrinae, reflected light: A – Paraquanothrus grahamin. sp., recently killed specimen in water, dorsal view (insert, close-up of lenticulus); B – same, ventral view, showing silvery plastron; C – same, preserved specimen (notogaster with small patches of damaged cerotegument, showing pale underlying procuticle); D – Paraquanothrus spoonerin. sp., preserved specimen (arrow pointing to shallow sulcus); E –Aquanothrus montanusEngelbrecht, preserved paratype from type locality (Vegkop, District of Winburg South Africa). Scale bars 100μm; A-B, and C-E to same scale.
Figure 3 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 3 Paraquanothrus grahamin. sp., transmission (E) and scanning (all others) electron micrographs: A – dorsolateral view of adult (cracks in cerotegument are artefacts of preparation); B – fractured edge of notogastral cerotegument exposing underlying procuticle; C close-up of A in sejugal region; D – close-up of opening to coxal gland; E – section of notogastral cuticle showing papilliform cerotegument and procuticle with sparse pore canals; F – dorsolateral view of tritonymph; G – same, close-up of hysterosomal plications, showing openings to cerotegument air-chambers. Scale bars 100μm (A, F); 10 μm (C); 1 μm (B, D, E, G). Abbreviations: ctg – cerotegument;et – lateral tooth
Figure 2 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 2 Paraquanothrus grahamin. sp., adult (scanning electron micrographs): A – dorsal view; B – ventral view; C – lateral view. Scale bar 100 μm.
Figure 6 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 6 Paraquanothrus grahamin. sp., transmitted-light micrographs of adult: A – legs I-IV (trochanters absent from I, II); B – partly extended ovipositor; C – palp, abaxial view; D – partial tarsus I; E – same, partial enlargement; F – partial tarsus IV; G – partial femur I, adaxial view; H – base of femur IV; I – distal part of tectal seta of tarsus I; J – female, strongly cleared to show eggs; K – egg from freshly killed specimen; L – portion of preserved egg, showing microgranular surface; M – portion of chelicera, adaxial view; N – same location, internal focus showing part of looping trachea and terminal bulb. Scale bars: 100 μm (A, J); 50 μm (K); 20 μm (B, L); 10 μm (C, F-H, M, N); 5 μm (D, E, I). Abbreviations (other than setae):dt – claw-depressor tendon (vague);e – famulus; gt – guide tube;rt – 'root' of famulus; st – stigma;Tg
Figure 15 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 15 Food and fecal material ofParaquanothrus grahamin. sp. (A-F) and P. spooneri n. sp. (G-L): A – intact fecal pellet, G from adult male; B – ventricular contents of tritonymph; C – same, different specimen; D – partial fecal bolus of adult; E – crushed fecal bolus from tritonymph; F – same, different specimen; G – broken fecal pellet from adult female; H – partial fecal bolus from tritonymph; I – ventricular contents of adult male; J – same, from tritonymph; K – crushed fecal bolus from tritonymph; L – partial fecal pellet from adult female. Scale bars: 50 μm (A, G); 25 μm (remainder, all to same scale). Abbreviations:dia– diatom;cu – possible plicate cuticle of juvenile; qu – quartz grain;rm – ramate mastax of rotifer (Philodinasp.).
Figure 9 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 9 Paraquanothrus spoonerin. sp., adult (legs omitted): A – dorsal view and enlargement of flattened rostrum; B – ventral view; C – lateral view; D – bothridial region, anterolateral view. Scale bars: 100μm (A-C), 20 μm (D). Abbreviations (other than setae and lyrifissures): asc– ascleritic band of notogaster;bng – border of notogaster;bt – base of tectum; bvp –border of ventral plate;cms – circumgastric muscle sigilla;Le – lenticulus; of – oblique fold. For coxisternal setae, see Remark 15.
Figure 4 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 4 Paraquanothrus grahamin. sp., transmitted-light micrographs of adult: A –bothridial region; B – fragment of notogastral cuticle with cerotegument intact (far left) and removed (right), showing apobasic seta (insert, setalm and lyrifissureim); C – coxisternum and genital region of male, showing extensive development of tracheae (arrows) and flattened genital papillae (lower left insert); D – coxisternal apodemes of right side, posterior view of dissected specimen (dorsal to top, * marks perforation); E – partial podosoma (lateral, anterior to left), showing tracheal vestibules I (closeup in top insert)) and III (closeup of two variants inserted to right); F – posterior view of dissected postanal strut; G
Figure 14 Type locations. A in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 14 Type locations. A – type location of Paraquanothrus grahamin. sp., on barren sandstone ('slickrock fin') near Moab, Utah; B – same, closeup of dry 'pan' (shallow rock pool; cell phone and∼15 cm ruler for scale); C – same general location, small water-filled pan containing more than 100 individuals∼(10 cm pipette for scale); D-F – type location of Paraquanothrus spoonerin. sp., Heggie's Rock, Georgia, general view (D) and small dry rock pools (E-F) containing mites, vegetated by Black Rock Moss (Grimmia laevigata(Bird.)) and Elf Orpine (Diamorpha smalliiBritton ex Small). Photographs contributed by Tim Graham (A-C) and John Spooner (D-F).
Figure 5 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 5 Paraquanothrus grahamin. sp., adult: A – leg I, adaxial view (trochanter not shown); B – leg IV, abaxial view, with insert showing variant with tibial setad present; C – subcapitulum (right half), ventral view, slightly flattened; D – palp, abaxial view; E – left chelicera, adaxial view (trachea omitted). Scale bars: 50μm (A-C, E); 25 μm (D). Abbreviations (other than setae):st – stigma, tr – trachea, Tg – Trägårdh's organ.
Figure 1 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 1 Paraquanothrus grahamin. sp., adult (legs omitted): A – dorsal view and enlargement of rostrum; B – ventral view; C – lateral view (specimen somewhat contracted); D – bothridial seta. Scale bars 100μm (A-C), 10 μm (D). Abbreviations (other than setae and lyrifissures): et – lateral tooth on epimere II; gla– opening of opisthonotal gland;Le – lenticulus; of – oblique fold between legs III-IV;vr – vertical ridge posterior to acetabulum I; z – opening to coxal gland. For coxisternal setae, see Remark 15.
Figure 12 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 12 Paraquanothrus spoonerin. sp., transmitted-light micrographs: A – adult legs I-IV (trochanters absent from I, II); B – femur showing large saccule; C – base of femur III, showing small saccule; D – trochanter and base of femur IV, dorsal view; E – subcapitulum
Figure 13 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 13 Paraquanothrus spoonerin. sp., juveniles (legs omitted): A – larva, dorsal view; B – larva, ventral view; C – protonymph hysterosoma, ventral view; D – deutonymph, genital valves (top normal, bottom variant); E – tritonymph, dorsal view; F– tritonymph ventral view. Scale bar 100 μm. Abbreviations (other than setae and lyrifissures):AD – adanal valve;δ – line of dehiscence;Cl – Claparède's organ; hyr – hyaline region of prodorsum;p.ag– aggenital leathery patch;p.gla– periglandular leathery patch;p.pv – posteroventral leathery patch; PS; pseudanal valve. For coxisternal setae, see Remark 15.
Figure 11 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 11 Paraquanothrus spoonerin. sp., adult: A – leg I, abaxial view (trochanter absent, small eupathidial setaep) (at base of claw not labeled; B – leg IV, abaxial view; C – subcapitulum, ventral view, slightly distorted from flattening; D – palp, adaxial view; E – left chelicera, adaxial view (trachea omitted). Scale bars: 25μm. Abbreviations (other than setae):LS– labrum; sac– saccule; st – stigma,tr – trachea, Tg – Trägårdh's organ.
Figure 18 A-F in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 18 A-F, Aquanothrusadults (from Thaba Patchoa unless noted otherwise; see text): A – prodorsum (notogaster removed); B – anterior part of anal region, external view; C – same, internal view; D – apobasic notogastral setap1 from undescribed Botswana species (arrow at deeply invaginated insertion, asterisk in alveolar canal); E – right palp and rutellum; F – dorsal base of palp tarsus, adaxial view; G – encrusting epibiotic diatoms and debris on adults (clockwise from upper left: postanal margin (Verwoerd Dam), prodorsum margin (same), posterior notogaster (Botswana species); H – locality at top of Thaba Patchoa Mountain, South Africa (29°19.86′S, 27°05.39′E); I – same, inhabited rock
Figure 17 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 17 Tritonymphs (preserved) of species of Aquanothrinae, reflected light: A – Paraquanothrus grahamin. sp., dorsal view; B – same, lateral view; C – Paraquanothrus spoonerin. sp., dorsal view, large patch of cerotegument removed (*), showing pale procuticle underneath D – same, lateral view; E – Aquanothrus montanusEngelbrecht, preserved specimen from type locality (Vegkop, District of Winburg, South Africa), dorsal view; F – same, lateral view. Scale bar 100μm; all to same scale. Abbreviations: hyr – hyaline region of prodorsum;p.gla– periglandular leathery patch;p.lat – lateral leathery patch;p.pv – posteroventral leathery patch.
Figure 8 in Paraquanothrus n. gen. from freshwater rock pools in the USA, with new diagnoses of Aquanothrus, Aquanothrinae, and Ameronothridae (Acari, Oribatida)
Figure 8 Paraquanothrus grahamin. sp., light micrographs of juveniles: A – tritonymph, recently killed, in water; B – same, enlargement of anterior quarter; C – living nymph, partly burrowed into dry sediment; D – larva, bothridial seta; E – deutonymph, coxisternal seta3b; F – larva, gastronotic setac1; G –larva, tibia II solenidionφ and coupled setad; H – tritonymph, posterior margin, ventral view (slightly flattened); I – tritonymphal exuvia, lateral view. Scale bars: 100 μm (A, C, I); 50 μm (B); 20 μm (H); 5 μm (D-G). Abbreviations (other than setae and lyrifissures): δ – line of dehiscence;hyr – hyaline region of prodorsum.
FIGURES 182–190 in Morphology of juvenile instars of Ameronothridae (Acari: Oribatida)
FIGURES 182–190. Juvenile instars of Halozetes: 182 — tritonymph of Halozetes marinus marinus, dorsal view (Figure from: Wallwork 1963), 183 — tritonymph of Halozetes marinus marinus, ventral view (Figure from: Wallwork 1963), 184 — nymph of Halozetes marinus minor, dorsal view (Figure from: Wallwork 1966), 185 — larva of Halozetes marionensis, dorsal view (Figure from: Engelbrecht 1974), 186 — larva of Halozetes marionensis, ventral view (Figure from: Engelbrecht 1974), 187 — tritonymph of Halozetes marionensis, dorsal view (Figure from: Engelbrecht 1974), 188 — nymph of Halozetes macquariensis, dorsal view (Figure from: Wallwork 1966), 189 — tritonymph of Halozetes littoralis, dorsal view (Figure from: Wallwork 1970), 190 — nymph of Halozetes plumosus, dorsal view (Figure from: Wallwork 1966). Scale bars (185–186) 100 µm, scale bar (187) 300 µm; scale bars to Figures 182–184, 188–190 absent in papers.
FIGURES 173–181 in Morphology of juvenile instars of Ameronothridae (Acari: Oribatida)
FIGURES 173–181. Juvenile instars of Halozetes: 173 — tritonymph of Halozetes belgicae belgicae, dorsal view (Figure from: Wallwork 1965), 174 — tritonymph of Halozetes belgicae mickii, dorsal view (Figure from: Coetzee 1999), 175 — tritonymph of Halozetes capensis, dorsal view (Figure from: Coetzee & Marshall 2003), 176 — tritonymph of Halozetes crozetensis, dorsal view (Figure from: Wallwork 1962), 177 — tritonymph of Halozetes crozetensis, ventral view (Figure from: Wallwork 1962), 178 — tritonymph of Halozetes intermedius, dorsal view (Figure from: Wallwork 1963), 179 — larva of Halozetes marinus devilliersi, dorsal view (Figure from: Engelbrecht 1974), 180 — larva of Halozetes marinus devilliersi, ventral view (Figure from: Engelbrecht 1974), 181 — tritonymph of Halozetes marinus devilliersi, dorsal view (Figure from: Engelbrecht 1974). Scale bars (174–175, 179–180) 100 µm, scale bar (161) 300 µm; scale bars to Figures 173, 176–178 absent in papers.
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