Exogoninae (Annelida: Syllidae) from Chilean Patagonia Author Soto, Eulogio H. Author Martín, Guillermo San text Zootaxa 2017 2017-11-24 4353 3 521 539 journal article 31330 10.11646/zootaxa.4353.3.7 e302a65d-87ae-482c-a2fe-cd587b3af0f0 1175-5326 1065840 452992DC-3E00-4E57-9484-608D4463B8BB Exogone heterosetoides Hartmann-Schröder, 1979 Exogone heterosetoides Hartmann-Schröder, 1979 : 110 , figs. 171–174. Exogone (Exogone) heterosetoides : San Martín 2005 : 126 , figs. 75, 76. Exogone heterosetosa non McIntosh: Ehlers 1897 : 51 , pl. 3, figs. 61–65. Material examined . Station 36 (36) (LBUV). Distribution . Australia . First report to Chile (Puerto Engaño in Ballenero channel. Magellan Strait to the south). Habitat . Shallow bottoms: algae, sand. Seagrass, dead corals, mud, etc.; intertidal to 33 m ( San Martín, 2005 ). Inside tubes of Chaetopterus cf. variopedatus in fjords and channels of Patagonia. Salinity: 35 PSU, temperature: 8.7°C. Remarks . The examined specimens perfectly agree with the description of this species of San Martín (2005) . The description of Ehlers (1897) of E. heterosetosa clearly is not the same species, but instead, E. heterosetoides . Both species, E. heterosetosa McIntosh, 1885 and E. heterosetoides are similar, characterized by having spinigerlike compound chaetae distally enlarged, spatulated, and blades short, filiform; however, the median antenna is longer, the antennae are originated on middle of prostomium, the shafts of spiniger-like chaetae are less enlarged, and the proventricle is longer in E. heterosetosa (see San Martín, 2005 ). This constitutes the first report of E. heterosetoides to Chile , although it was previously reported as E. heterosetosa . Probably both species are present in Chile .