Entocythere insignipes (Sars, 1926) Hoff, 1942

1926 Cytherites insignipes n. sp. —Sars: 10–11, 22–23, Pl. V Figs. 1 –13 (T).

1942b E. (C.) insignipes (Sars 1926) comb. nov. —Hoff: 63 [as Cytherites insignipes], 64 [as Cytherites insignipes], 66, 69 [and as Cytherites insignipes], 71, new combination (C, K, R, T).

1942b Entocythere (Cytherites) insignipes (Sars.) 1926 .— Rioja: 685, 687 (K, T).

1943 Entocythere (Cytherites) insignipes (Sars, 1926) .—Hoff: 280 (C, R).

1943b Cytherites insignipes .— Rioja: 569, 584–585 (R).

1944a E. insignipes (Sars 1926) Hoff 1942 .—Hoff: 328, 331 [and as Entocythere (Cytherites) insignipes] (C, K).

1947 E. insignipes (Sars) .—Tressler: 705 (C).

1949 Entocythere insignipes (Sars) .— Rioja: 328 (R).

1959 Entocythere insignipes (Sars) 1926 .—Tressler: 731, Fig. 28.192a, b, c (D, K, T).

1961 E. (C.) insignipes .—Howe: Q300 [and as C. insignipes], Fig. 226 1a, b (C).

1962 Entocythere insignipes (Sars) .—Hart: 121 [and as Cytherites insignipes], 123 [and as C. insignipes], 139 (C, D, T).

1967 Cytherites insignipes .—Hobbs, Holt & Walton: 6 (C).

1971 Cytherites insignipes .—Hobbs Jr.: 22, 52, 53 (C).

1974 Entocythere insignipes (Sars, 1926) .—Hart & Hart: 14 [and as Cytherites insignipes], 15 [and as C. insignipes], 142 (C).

1975 Entocythere insignipes (Sars, 1926) .—Hart & Hart: 64 (C).

2011 Entocythere insignipes (Sars, 1926) .—Williams et al.: 276, 279 [as Cytherites insignipes Sars, 1926] (C).

Remarks: Hoff (1942b) deemed the genus Cytherites Sars, 1926 to be a synonym of Entocythere, but retained it as a subgenus. The subgenus designation was removed in Hoff (1944a: 328, 330–331), with justification. This species was designated incertae sedis by Hart (1962: 123); the author suggested that the original genus name, Cytherites, be retained for use only, if and when deemed appropriate, as a monotypic genus containing E. insignipes . Entocythere insignipes is considered to be a member of the subfamily Entocytherinae based on locality (i.e., Canada) and several morphological characters, including presence of a respiratory lobe. Placement within the subfamily, however, is, and remains, problematic.