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47 results for “Megalomma”
FIGURE 18 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861
FIGURE 18. Selected structures of Megalomma species. A–B) Thorax, ventral views; C) thorax, lateral view; D–F, K, T) thorax, dorsal views; G) dorsal lips; H–J) dorsalmost radiolar eyes; L–M) superior narrowly hooded thoracic chaetae; N) companion chaeta; O) inferior thoracic chaetae type C; P) abdominal uncinus; Q) thoracic uncinus; R) narrowly hooded abdominal chaeta. A, D, G–H) Megalomma modestum (de Quatrefages, 1866); B, F, J) Potamilla anophthalma Hartmann-Schröder, 1960; C, E, I) Potamilla clara Chamberlin, 1919; K–R) Megalomma mushaense (Gravier, 1908a). A, D, G–H) Syntype from Perú, MNHN, 163; B, F, J) holotype from Perú, ZMH, 15435; C, E, I) holotype from California, MCZ, 2171; K–R) modified from Gravier, 1908a. Abbreviation: dl dorsal lip. Scale bars: A–B, D–F: 1 mm; C: 2 mm; G–J: 0.25 mm; K–R: not scaled.
FIGURE 16 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861
FIGURE 16. Megalomma lobiferum (Ehlers, 1887). A) Thorax, dorsal view; B) same, ventral view; C) same, lateral view; D) collar, dorsal view; E) dorsalmost radiolar eye; F) eye from a lateral radiole; G) eye from a ventral radiole; H) thoracic noto- and neurochaetae. A–B) Specimen from Florida, USNM, 67959; C–H) specimen from Isla Contoy, México, ECOSUR. Scale bars: A–D) 1 mm; E–G) 0.3 mm; H) 0.5 mm.
FIGURE 13 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861
FIGURE 13. Selected structures of Megalomma species. A, D, G, R) Thorax, lateral views; B, F, O–P) thorax, dorsal views; C, H, Q) thorax, ventral views; E) dorsalmost radiolar eye; I, K) eyes from ventral radioles; J) eye from lateral radiole; L) thoracic uncinus; M) abdominal uncinus; N) companion chaetae. A–E) Megalomma gesae Knight-Jones, 1997; F–N) Megalomma heterops Perkins, 1984; O–R) Megalomma lanigera (Grube, 1846). A–E) Paratype from El Salvador, ZMH, 15245; F–N) modified from Perkins, 1984; O–R) specimens from Naples, MCZ, 1517. Abbreviations: apr anterior peristomial ring; vs ventral sacs; vbf ventral basal flange. Scale bars: A–D) 0.5 mm; E) 0.25 mm; F–N) not scaled; O–P) 2 mm.
FIGURE 8 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861
FIGURE 8. Scanning electronic micrographs of body and caruncle. A) Lateral view of Megalomma coloratum (Chamberlin, 1919) from Mazatlán, México, ECOSUR; B–C) lateral and dorsal views of caruncle of Megalomma lobiferum (Ehlers, 1887) from Ria Lagartos, México, ECOSUR. Scale bars: A) 1 mm, B–C) 0.2 mm.
FIGURE 6 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861
FIGURE 6. Megalomma circumspectum (Moore, 1923). A, D, G) Thorax, lateral views; B) thorax, ventral view; C, E–F) thorax, dorsal views; H) base of the dorsalmost radiole, lateral view; I) dorsalmost radiolar eye; J–K) eyes from lateral radioles; L) eye from a ventral radiole; M) base of 2nd dorsal radiole, lateral view; N) spermatozoon; O) oocytes; P, V) thoracic uncini; Q) abdominal uncinus; R–S) superior thoracic narrowly hooded chaetae; T–U) inferior thoracic chaetae type C. A–E, H–V) specimens from Nayarit, México, ECOSUR; F–G) specimen from Santa Cruz, California, LACM, 003489. In F–G parasitic copepods are indicated with arrows. Scale bars: A–G) 1 mm; H–M) 125 µm; N) not scaled; O) 25 µm; P–V) 20 µm.
FIGURE 3 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861
FIGURE 3. Megalomma bioculatum (Ehlers, 1887). A) Thorax, dorsal view; B) same, ventral view; C) dorsalmost radiolar eye. A–C) Specimen from Florida, MCZ, 47066. Abbreviation: apr anterior peristomial ring. Scale bars: A–B) 1 mm; C) 0.3 mm.
FIGURE 10 in Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861
FIGURE 10. Relationships between biometrical features in Megalomma coloratum (Chamberlin, 1919).
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