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56 results for “Coronatella”
FIGURE 1 in Redescription of Coronatella poppei (Richard, 1897) (Crustacea, Branchiopoda, Chydoridae) and a revision of the genus in Brazil, with descriptions of new taxa
FIGURE 1. Scheme of the measurements used for morphometric analyses of Coronatella species occurring in Brazil. CL = carapace length; TCL = terminal claw length; BSL = basal spine length; PAML = postanal margin length; ALM = anal margin length; PAMW = postanal margin width.
FIGURE 5 in Not " Alona " monacantha Sars, 1901, but Coronatella hardingi (Brehm, 1957) (Crustacea: Branchiopoda: Cladocera) in the Afrotropics
FIGURE 5. Coronatella hardingi (Brehm, 1957) (A–B), Okavango Delta, Botswana and Coronatella monacantha (Sars, 1901) (= Alona monacantha) (C–D) from the Lençóis Maranhenses, Brazil. Comparison of postabdomen (A, C) and IDL setae on P1 (B, D) of adult parthenogenetic females.
FIGURE 3 in Not " Alona " monacantha Sars, 1901, but Coronatella hardingi (Brehm, 1957) (Crustacea: Branchiopoda: Cladocera) in the Afrotropics
FIGURE 3. Coronatella hardingi (Brehm, 1957) (= Alona hardingi Brehm, 1957) adult parthenogenetic female, Okavango Delta, Botswana, Leg. H.J. Dumont & R. Hart. A, first limb, IDL and ODL not shown. B–C, idem, IDL and ODL. D–E, second limb. F, third limb, exopodite. G, Idem, simplified. H, idem, endite. I, fourth limb, endite. J, idem, exopodite. K, fifth limb. L, idem, inner portion setulae omitted.
FIGURE 1 in Not " Alona " monacantha Sars, 1901, but Coronatella hardingi (Brehm, 1957) (Crustacea: Branchiopoda: Cladocera) in the Afrotropics
FIGURE 1. Coronatella hardingi (Brehm, 1957) (= Alona hardingi Brehm, 1957). A, habitus of adult parthenogenetic female, Okavango Delta, Botswana, Leg. H.J. Dumont & R. Hart. B, habitus of adult male, Arbolle, Ivory Coast, West Africa. Leg. Van Cotthem.
FIGURE 2 in Not " Alona " monacantha Sars, 1901, but Coronatella hardingi (Brehm, 1957) (Crustacea: Branchiopoda: Cladocera) in the Afrotropics
FIGURE 2. Coronatella hardingi (Brehm, 1957) (= Alona hardingi Brehm, 1957) adult parthenogenetic female, Okavango Delta, Botswana, Leg. H.J. Dumont & R. Hart. A–B, habitus, lateral view. C–D, valve ornamentation. E, head pores. F, carapace, posteroventral corner with denticle (arrow). G, second antenna. H, first antenna. I. labral keel with denticle (arrow). J–K, postabdomen. L, basal claw and basal spine.
FIGURE 4 in Not " Alona " monacantha Sars, 1901, but Coronatella hardingi (Brehm, 1957) (Crustacea: Branchiopoda: Cladocera) in the Afrotropics
FIGURE 4. Coronatella hardingi (Brehm, 1957) (= Alona hardingi Brehm, 1957) adult male, Arbolle, Ivory Coast, West Africa. Leg. Van Cotthem. A, habitus. B, postabdomen. C, first limb (copulatory hook).
FIGURE 15 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 15. Biogeography of Ovalona gen. n. and the Alona elegans-group. Latter seems closely related to Coronatella, and needs removal from the genus Alona. Distribution of Ovalona weinecki sensu lato after Frey (1988) and Paggi (1987) and continental relict Ovalona meridionalis after Sinev (2006). Western populations of Ovalona in the Scotia Arc (closest to coast of Argentina) may belong to different species or subspecies (O. subantarctica). For A. elegans-group, distributions after Alonso (1996), Dumont et al. (1979) and Margaritora (1985). Latter has a Western Palaearctic distribution center with two possible disjunctions: South Africa (A. striolata, Sars 1916) and Mongolia (A. elegans?, Flössner et al. 2005). See text for comments. The central Saharan record of A. elegans is new, from Chad (Ounianga Kebir; Coll. Ugent, Leg. D. Verschuren).
FIGURE 12 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 12. Coronatella holdeni (Green, 1962) = Alona holdeni Green, 1962, parthenogenetic females from Fesafari, Niger Basin, Nigeria. A. Habitus, lateral view; B. Body outline; C. Head pores; D. Labrum; E. Posteroventral corner; F. First antenna; G. Antenna; H. First exopod spine on antenna; I. Postabdomen.
FIGURE 7. Coronatella anemae n in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 7. Coronatella anemae n.sp., SEM parthenogenetic females from Socotra Island (Yemen). A. Head pores (from Qaysoh, Socotra); B. Second antenna (from Qaysoh); C. Postabdomen (Qaysoh); D. Postabdomen (Rewgid); E. Postabdomen (Noged), arrows indicate two conspicuous characters for C. anemae: long basal spine and well pronounced triangular preanal corner; F. First and second limb (Rewgid), ventral view.
FIGURE 6. Coronatella anemae n in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 6. Coronatella anemae n.sp. SEM of habitus, culture from Rewgid, Socotra Island (Yemen). A. Lateral view; B. Dorsal view; C. Anterior view; D. Ventral view. Scale bar indicates 100µm.
FIGURE 5. Coronatella anemae n in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 5. Coronatella anemae n.sp. A. Habitus, lateral view (Red Sea Hills, Sudan); B. Habitus, lateral view (culture from Rewgid, Socotra Island); C. Body outline; D. Head shield (Red Sea Hills, Sudan); E. First antenna; F. Second antenna (Sudan); G. Labral keel (Noged, Socotra); H. Labral keel (Rewgid, Socotra); I. Labral keel (Sudan); J. Posteroventral valve corner (Sudan); K. Postabdomen (Sudan); L. Postabdomen (Sharjah, UAE).
FIGURE 4 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 4. Coronatella rectangula (Sars, 1862) = Alona rectangula Sars, 1861, limb morphology of parthenogenetic females from Samber River, Belgium. A. First limb; B. Idem, IDL and ODL; C. Idem, anterior side; D. Second limb; E. Idem, exopodite; F. Idem, scrapers 5–8; G. Idem, brushlike seta in filter comb; H. Third limb; I. Idem, relative size exopodite setae; J. Idem, setae 5–6; K. Idem, internal endite setae; L. Idem, gnathobase. M. Fourth limb; N. Idem, setae on endite margin; O. Fifth limb; P. Idem, endite setae and gnathobase. For abbreviations, see Fig. 2.
FIGURE 3 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 3. Coronatella rectangula (Sars, 1861) = Alona rectangula Sars, 1861, adult parthenogenetic females; types from Norway (A–D & I–K) and population from Samber River, Belgium (E–H & L). A. Habitus, lateral view; B. Posteroventral corner of valves; C. ODL setae first limb; D. Labral keel, variation between specimens; E. Habitus, lateral view; F. First antenna; G. Labral keel; I. Postabdomen lectotype, lateral view; J. Idem, marginal denticles; K. Postabdomen of type series, lateral view; L. Postabdomen of specimens from Belgium; H. Antenna.
FIGURE 2 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 2. Ovalona weinecki (Studer, 1878) = Alona weinecki Studer, 1878. Adult parthenogenetic females from Marion Island. A. First maxilla; B. First limb; C. Idem, anterior elements; D-E. Idem, ODL and IDL; F. Idem, gnathobase; G. Second limb; H. Idem, exopodite; I–J. Idem, first and second gnathobasic filter comb setae; K. Third limb; L. Idem, exopodite setae 6–7; M Idem, endite; N. Idem, internal endite setae; O. Idem, gnathobase; P. Fourth limb; Q. Fifth limb; R. Idem, inner portion. Abbreviations: as, accessory seta; en, endite; ep, epipodite; ex, exopodite; gn, gnathobase; IDL, inner distal lobe; il, inner lobe; ODL, outer distal lobe; pep, pre-epipodite; s, sensillum.
FIGURE 14 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 14. Coronatella eucostata (Sars, 1894) = Alona eucostata Sars, 1894 (= Alona novae-zealandiae Sars, 1904?). Text on slide written by Sars reads "Alona rectangula? GOS New Zealand". Zoological Museum Oslo F. 9737 Mp 269 ex coll G.O. Sars. Adult parthenogenetic female (A–D) and male (E–F). A–B. Postabdomen; C. First limb, ODL; D. Labral keel; E. Postabdomen (male); F. First limb (male), copulatory hook. Sars described two(!) species from the rectangula-complex, both from South Island of New Zealand: A. eucostata Sars, 1894 from Dunedin and A. novae-zealandiae Sars, 1904 from d'Urville Island (Sars 1894, 1904). They are very similar from descriptions and figures, but different in size (females resp. 0.48mm and 0.36mm; compare with sizes C. anemae and C. rectangula in Table 1).
FIGURE 1 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 1. Ovalona weinecki (Studer, 1878) = Alona weinecki Studer, 1878. Adult parthenogenetic females from Marion Island (and one postabdomen from Heard). A. Habitus, lateral view; B. Body outline; C. Labral keel; D. Head pores; E. First antenna; F. Second antenna; G. First endopod seta; H. Posteroventral valve corner; I. Mandible; J. Postabdomen specimen Heard Island; K. Postabdomen specimen Marion Island.
FIGURE 13 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 13. Coronatella holdeni (Green, 1962) = Alona holdeni Green, 1962, parthenogenetic females from Fesafari, Niger Basin, Nigeria. A. First maxilla; B. First limb; C. Anterior elements on first limb; D. First limb, ODL and IDL; E. Second limb; F. Idem, sixth scraper; G. Third limb; H. Idem, exopodite setae 4–6; I. Fourth limb, exopodite; J. Fifth limb. For abbbreviations, see Fig. 2.
FIGURE 9. Coronatella anemae n in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 9. Coronatella anemae n.sp. Limb characters of parthenogenetic females (Rewgid, Socotra Island). A. First maxilla; B. First limb; C. Idem, anterior elements; D. Idem, ODL; E. Second limb; F. Idem, first three setae in filter comb; G. Third limb, exopodite; H. Idem, exopodite setae 5–6; I. Idem, endite; J. Idem, internal endite setae; K. Idem, gnathobase; L. Fourth limb, exopodite; M. Idem, setae 4–6; N. Idem, endite; O. Fifth limb; P. Idem, outline; Q. Idem, inner portion; R. Idem, element behind second endite seta (2'). For abbreviations, see Fig. 2.
FIGURE 8. Coronatella anemae n in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 8. Coronatella anemae n.sp. Adult parthenogenetic female, character variability between populations from different regions. A. Postabdomen (Uzbekistan); B. Idem, Aldabra (Seychelles); C. Idem, Socotra Island (Yemen), culture from Rewgid; D.–E. Idem, Qaysoh (Socotra); F. Idem, Noged (Socotra); G. Variation in terminal claw and basal spine morphology, three populations from Socotra Island; H. Head pore morphology from three populations, Socotra Island; I–M. Outer and inner distal lobes of P1 (note differences in IDL setulation and setae length) from Uzbekistan (I), Aldabra, Seychelles (J), Sudan (K), UAE (L), three populations from Socotra Island (M).
FIGURE 4 in A new species of Coronatella Dybowski & Grochowski, 1984 (Cladocera: Chydoridae) endemic to Jeju Island (Republic of Korea)
FIGURE 4. Coronatella (Coronatella) jejuana sp. nov. from Sangdoekcheon Gyocharo (type locality), Jeju-do, Republic of Korea, parthenogenetic females. Parthenogenetic female, thoracic limbs. A, limb I. B, IDL and ODL of limb I. C–D, outer and inner portions of limb II. E, exopodite of limb III. F–G, inner portion of limb III. H, exopodite of limb IV. I–J, inner portion of limb IV. K, exopodite of limb V. L, inner lobe of limb V. Coronatella (Coronatella) jejuana sp. nov. from Yongsuji Reservoir, Jeju-do, Republic of Korea, parthenogenetic female. M, IDL and ODL of limb I. Coronatella (Coronatella) rectangula (Sars, 1862) from a small pond near Jungsanganseo-ro, Jeju-do, Republic of Korea, parthenogenetic female. N, IDL and ODL of limb I.
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