FIGURE 7 in A new Lamellibrachia species and confirmed range extension for Lamellibrachia barhami (Siboglinidae, Annelida) from Costa Rica methane seeps

FIGURE 7. Micrographs of vestimental and trunk regions of Lamellibrachia donwalshi holotype (SIO-BIC A8382), male paratype (SIO-BIC A1341), and putative female paratype (SIO-BIC A1341). A 10 µm transverse section through anteriormiddle part of vestimentum, male paratype. B 10µm transverse section through anterior-middle part of vestimentum, female paratype. C 10µm transverse section through trunk, male paratype. D Light micrograph of additional spermatozeugmata dissected from male paratype. E Close-up of spermatozeugmata in 10µm transverse section through trunk, male paratype. F 10µm transverse section through crown, male paratype. VG, vestimental groove; DV, dorsal blood vessel; VV, ventral blood vessel; VN, ventral nerve cord (Worsaae et al. 2016); G, gland; SZ, spermatozeugmata; OB, obturaculum; OV, obturacular blood vessel; OC, coelom of obturacular blood vessel; BL, branchial lamellae; SL, sheath lamellae. Scale bars, A–C=1mm; D=100µm; E–F=1mm.