Exogone heterosetoides Hartmann-Schröder, 1979

Soto, Eulogio H. & Martín, Guillermo San, 2017, Exogoninae (Annelida: Syllidae) from Chilean Patagonia, Zootaxa 4353 (3), pp. 521-539 : 523

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.