Four new Caribbean Sigambra species (Annelida, Pilargidae), and clarifications of three other Sigambra species

Sigambra hernandezi sp. nov., holotype (ECOSUR 216), stained with Shirlastain-A A anterior region, dorsal view B anterior end, dorsal view C same, right lateral view D chaetiger 19, right parapodium, posterior view (inset: close-up of oocytes exposed after body wall fracture) E chaetiger 62, right parapodium, posterior view F posterior region, dorsal view. Scale bars: 0.6 mm (A), 0.2 mm (B, C), 140 µm (D), 80 µm (E), 0.3 mm (F).