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- Amastigos acutusPiltz, 1977: 57, figs 1–2.
Near Carpinteria Hope Ranch, CaliforniaUSA, Stn. 11A, April 5 1971, fine grained, sandy beach.
Holotype (LACM-AHF POLY 1239) and 1 Paratype (LACM-AHF POLY 1240).
(4 specimens) Baja California Sur: La Paz Bay, Ensenada de La Paz (UANL-6457), Stn. 1 [24°06'50.3"N, 110°25'12.0"W] (1 specimen), August 17 2005; (UANL-6459), Stn. 7 [24°09'00.0"N, 110°21'38.0"W] (1 specimen) November 27 2005; (UANL-6456), Stn. 11 [24°08'28.9"N, 110°25'41.9"W] (1 specimen), November 27 2005, 0.20 m, Coll. Daniel Hernández-Valdez (DHV), Guerrero: Petacalco Bay (UANL-6458), Stn. E-2 [17°58'26"N, 102°03'45"W] (1 specimen), december 9 1992, 7 m, Coll. Edgar Amador-Silva.
USA: California (Piltz 1977); México: Baja California Sur, La Paz Bay; Guerrero, Petacalco Bay (material reported in this work).
Upon examining the holotype, we noticed some morphological characteristics that were omitted in the original description: a) the presence of palpodes on the anterior end of the prostomium, and b) the structure described as the pygidium is, in fact, the rupture of an abdominal segment. The rest of the description agrees well with the features of the type material
- García-Garza, M; León-González, J; 2011: Review of the Capitellidae (Annelida, Polychaeta) from the Eastern Tropical Pacific region, with notes on selected species ZooKeys, 151: 17-52. doi
- Piltz F (1977) A new genus and species of polychaete (Family Capitellidae) from Southern California. Bulletin of the Southern California Academy of Sciences 76: 57-60.