Sigambra olivai sp. nov., paratype (ECOSUR 221), stained with Shirlastain-A A anterior region, dorsal view B same, left, slightly oblique lateral view C same, anterior end, ventral view D another paratype (ECOSUR 226, complete), chaetiger 30, right parapodium, posterior view E same, chaetiger 35, right parapodium, posterior view; asterisk indicates the gonopore (insets: notohook and close-up of interramal gonopore) F same, chaetiger 90, right parapodium, anterior view (inset: notohook). Scale bars: 0.3 mm (A–C), 0.2 mm (D), 150 µm (E, F).

  Part of: Salazar-Vallejo SI, Rizzo AE, León-González JÁ, Brauco KM (2019) Four new Caribbean Sigambra species (Annelida, Pilargidae), and clarifications of three other Sigambra species. ZooKeys 893: 21-50.