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33 results for “Ovalona”
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 2 in A new species of the genus Ovalona Van Damme & Dumont, 2008 (Cladocera: Anomopoda: Chydoridae) from South-East Asia, related to Australian Ovalona archeri (Sars, 1888)
FIGURE 2. Ovalona garibiani sp. nov. from channel at Tràm Chin National Park, Dong Thap province, Vietnam (type locality), parthenogenetic female. A–B, lateral view.
FIGURE 1 in A new species of the genus Ovalona Van Damme & Dumont, 2008 (Cladocera: Anomopoda: Chydoridae) from South-East Asia, related to Australian Ovalona archeri (Sars, 1888)
FIGURE 1. Ovalona garibiani sp. nov. from a channel at Tràm Chin National Park, Dong Thap province, Vietnam (type locality). A–K, adult parthenogenetic female. A–B, lateral view. C, ventral margin of valve. D, posteroventral angle of valve. E–F, head pores. G–H, keel of labrum. I–J, postabdomen. K, antennule. L, postabdomen of juvenile female of instar II. M, Ovalona archeri (Sars, 1888), postabdomen of adult parthenogenetic female (after Sinev 2002).
FIGURE 3 in A new species of the genus Ovalona Van Damme & Dumont, 2008 (Cladocera: Anomopoda: Chydoridae) from South-East Asia, related to Australian Ovalona archeri (Sars, 1888)
FIGURE 3. Ovalona garibiani. sp. nov. from channel at Tràm Chin National Park, Dong Thap province, Vietnam (type locality). A–L, appendages of adult parthenogenetic females. A, antenna. B, exopodite of antenna. C–L, thoracic limbs. C, limb I. D, setae a, b, d of limb I. E, ODL and IDL of limb I. F–G, inner and outer portion of limb II. H, exopodite of limb III. I, distal endite of limb III. J, limb IV. K, inner portion of limb IV. L, limb V. M, Ovalona archeri (Sars, 1888), antenna of adult parthenogenetic female (after Sinev 2002).
FIGURE 11 in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 11. Records of Coronatella anemae n.sp. and the West-African Coronatella holdeni (Green, 1962). See text for references. Abbreviations: Soc: Socotra Island; Seych: Aldabra, Seychelles.
FIGURE 10. Coronatella anemae n in Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera)
FIGURE 10. Coronatella anemae n.sp. Adult male (Sudan, Red Sea Hills). A. Habitus; B. First limb, copulatory hook; C. Postabdomen; D. Postabdomen of C. rectangula = Alona rectangula (drawing after Alonso 1996).
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