Class: Polychaeta Grube, 1850
Subclass: Sedentaria Lamarck, 1818
Infraclass: Scolecida Rouse & Fauchald, 1997
Family: Orbiniidae Hartman, 1942
Pettibonella shompens Gopal et al., 2014
Collection: Andaman & Nicobar Islands – off Car Nicobar Island, 9°17.967′N, 92°42.016′E, 50 m (FORVSS 261), 9°16.985′N, 92°42.158′E, 49 m (FORVSS 292). Smith McIntyre Grab.
Voucher No.: CMLRE/IO/SS/POL/00465, CMLRE/IO/SS/POL/00466 (FORV Referral Centre, CMLRE, Kochi)
Description: The new species, Pettibonella shompens is clearly distinguished from the only other species of the genus, Pettibonella multiuncinata, by the size and shape of the swan-shaped abdominal uncini. Each abdominal neuropodium with a large dorsal, swan-shaped uncinus facing 3 slender, ventral uncini; 3–4 crenulate capillary neurochaetae also present. Large swan-shaped hooks with a main fan surmounted by 2–4 denticles, shaft highly inflated below rostrum which it extends beyond.
Biological association: None
Remarks: The species name is attributed to the Shompen tribe inhabiting the Nicobar Islands.
Distribution: Indian Ocean, Andaman and Nicobar Islands, insular margin of Car Nicobar Island (known only from type locality).
Identified by: Aiswarya Gopal
Publication: Aiswarya Gopal, Abdul Jaleel Koovapurath Useph, Saramma Aikkarakunnath Varghese & Sanjeevan Veloorkirakathil Narayana (2014) A new species of polychaete, Pettibonella shompens sp. nov. (Orbiniidae), from the Nicobar Islands, North Indian Ocean, Marine Biology Research, 10:10, 1033-1037.