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1,955 results for “southeastern Brazil”
FIGURE 5 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 5. Prionospio fosterae sp. nov., anterior end and mid-body chaetigers, dorsal view (MNRJP-2748, holotype), showing characteristic color in ethanol. Abbreviations: br, branchia; pe, peristomium; pr, prostomium.
FIGURE 4 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 4. Prionospio acuta sp. nov. A. Chaetiger 1. B. Chaetiger 2. C. Chaetiger 3. D. Chaetiger 4. E. Anterior capillary chaetae. F. Posterior capillary chaetae. G. Hooded hook. H. Companion capillary chaetae. I. Branchia.
FIGURE 25 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 25. Prionospio cf. delta. A. Chaetiger 1. B. Chaetiger 2. C. Chaetiger 3. D. Chaetiger 4. E. Anterior capillary chaeta. F. Posterior capillary chaetae. G. Companion capillary chaetae. H. Hooded hook. I. Sabre chaetae. J. Branchia. K. Posterior-most chaetigers and pygidium.
FIGURE 21 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 21. SEM of Prionospio corrugata sp. nov. A. Anterior end and mid-body chaetigers, dorsal view. B. Close-up of the anterior end, dorsal view. C. Anterior end, ventral view. D. Hooded hooks (hoods partially removed). Abbreviations: br, branchia; cha3, chaetiger 3; nel, neuropodial lamellae; nol, notopodial lamella; pe, peristomium; pr, prostomium.
FIGURE 13 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 13. Prionospio hartmanae sp. nov. A. Chaetiger 1. B. Chaetiger 2. C. Chaetiger 3. D. Chaetiger 4. E. Anterior capillary chaeta. F. Posterior capillary chaetae. G. Companion capillary chaetae. H. Hooded hook. I. Sabre chaetae. J. Branchia. K. Posterior-most chaetigers and pygidium.
FIGURE 3 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 3. SEM of Prionospio acuta sp. nov., dorsal view. A. Anterior end. B. Mid-body chaetigers. Abbreviations: br, branchia; dc, dorsal crest; pe, peristomium; pr, prostomium.
FIGURE 30 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 30. SEM of Prionospio biancoi sp. nov. A. Whole fragment, dorsal view. B. Anterior end, dorsal view. C. Close-up of anterior end, dorsal view. D. Hook (hood removed). br, branchiae; ho, hook; pe, peristomium; pr, prostomium.
FIGURE 20 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 20. Prionospio corrugata sp. nov., showing characteristic color in ethanol (MNRJP-2765, paratype). Abbreviations: br, branchia; pe, peristomium; pr, prostomium.
FIGURE 6 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 6. SEM of Prionospio fosterae sp. nov. A. Anterior end and mid-body chaetigers. B. Close-up of the anterior end. C. Hooks (hoods removed). D. Posterior chaetigers and pygidium. Abbreviations: br, branchia; pe, peristomium; pr, prostomium; py, pygidium.
FIGURE 19 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 19. Prionospio cinthyae sp. nov. A. Chaetiger 1. B. Chaetiger 2. C. Chaetiger 3. D. Chaetiger 4. E. Anterior capillary notochaetae. F. Anterior capillary neurochaeta from anterior row. G. Anterior capillary neurochaeta from posterior row. H. Posterior capillary chaetae. I. Companion capillary chaetae. J. Hooded hook. K. Sabre chaetae. L. Sculptured branchia. M. Flattened branchia. N. Posterior-most chaetigers and pygidium.
FIGURE 12 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 12. SEM of Prionospio hartmanae sp. nov. A. Anterior end and mid-body chaetigers, dorsal view. B. Close-up of anterior end, dorsolateral view. C. Anterior chaetigers and mid-body, lateral view. D. Hook (hood removed). Abbreviations: br, branchia; pe, peristomium; pr, prostomium.
FIGURE 2 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 2. Prionospio acuta sp. nov., anterior end and mid-body chaetigers, dorsal view (MNRJP-2745, holotype), showing characteristic color in ethanol. Abbreviations: pe, peristomium; pr, prostomium.
FIGURE 15 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 15. SEM of Prionospio mutata sp. nov., dorsal view. A. Anterior end and mid-body chaetigers. B. Close-up of the anterior end. C. Anterior chaetigers and mid-body. D. Close-up of the mid-body. Abbreviations: br, branchia; dc, dorsal crest; nol, notopodial lamellae; pe, peristomium; pr, prostomium.
FIGURE 16 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 16. Prionospio mutata sp. nov. A. Chaetiger 1. B. Chaetiger 2. C. Chaetiger 3. D. Chaetiger 4. E. Anterior capillary chaeta. F. Posterior capillary chaetae. G. Companion capillary chaetae. H. Hooded hook. I–J. Gradual transformation of capillary chaetae into sabre chaetae. K. Sabre chaetae. L. Sabre chaetae. M. Posterior-most chaetigers and pygidium.
FIGURE 9 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 9. SEM of Prionospio kinbergi sp. nov., dorsal view. Anterior end and mid-body chaetigers. B. Close-up of the anterior end. C. Anterior end and mid-body chaetigers. D. Hooks (hoods removed). Abbreviations: br, branchia; dc, dorsal crest; ho, hook; nol, notopodial lamella; pe, peristomium; pr, prostomium.
FIGURE 23 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 23. Prionospio cf. delta, dorsal view, showing characteristic color in ethanol. Abbreviations: br, branchia; pa, palp; pe, peristomium; pr, prostomium.
FIGURE 8 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 8. Prionospio kinbergi sp. nov., dorso-lateral view (MNRJP-2750, holotype), showing characteristic color in ethanol. Abbreviations: Cbr, cirriform branchia; dc, dorsal crest; Fbr, flattened branchia; pe, peristomium; pr, prostomium.
FIGURE 11 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 11. Prionospio hartmanae sp. nov., dorso-lateral view (MNRJP-2754, holotype), showing characteristic color in ethanol. Abbreviations: br, branchia; ey, eye; pe, peristomium; pr, prostomium.
FIGURE 22 in New apinnate Prionospio (Annelida: Spionidae) species from southeastern Brazil
FIGURE 22. Prionospio corrugata sp. nov. A. Chaetiger 1. B. Chaetiger 2. C. Chaetiger 3. D. Chaetiger 4. E. Anterior capillary chaeta from anterior row. F. Anterior capillary chaeta from posterior row. G. Posterior capillary chaetae. H. Companion capillary chaetae. I. Hooded hook. J. Sabre chaetae. K. Sculptured branchia. L. Flattened branchia. M. Posterior-most chaetigers and pygidium.
Data from: Polyphyly of Mesadenus (Orchidaceae, Spiranthinae) and a new genus from the Espinhaço Range, Southeastern Brazil
Mesadenus displays an odd disjunction, with most species found in the southeastern USA, the Caribbean, and Mexico south to El Salvador, and two outliers occurring in southeastern Brazil. A recent molecular phylogenetic study showed that, as currently delimited, Mesadenus is polyphyletic, and further study of this little-known genus is required. Here we assessed relationships in Mesadenus and to other genera conducting a cladistic parsimony analysis of nucleotide sequences of nuclear (ITS) and plastid DNA (matK-trnK, trnL-trnF) for an enlarged sample of taxa, including five out of six currently accepted species of Mesadenus and representatives of nearly all (36 out of 41) genera of Spiranthinae, plus suitable outgroups. Detailed comparison of vegetative and floral attributes of relevant taxa was also conducted. Our results confirm polyphyly of Mesadenus and support creation of a new genus, Espinhassoa, to include Brazilian 'Mesadenus' glaziovii and 'M.' rhombiglossus (as Espinhassoa glaziovii and E. rhombiglossa, respectively). An identification key, descriptions, and illustrations of the two species herein included in Espinhassoa are provided.
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OpenNeuro
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