Caenestheriella packardi (Brady, 1886)

Richter, Stefan & Timms, Brian V., 2005, A List of the Recent Clam Shrimps (Crustacea: Laevicaudata, Spinicaudata, Cyclestherida) of Australia, Including a Description of a New Species of Eocyzicus, Records of the Australian Museum 57 (3), pp. 341-354 : 347

Caenestheriella packardi (Brady, 1886)

Estheria packardi Brady, 1886a: 85–86 , fig. C; Simon, 1886: 453 (list); Sars, 1895: 28–29, pl. 4 & 5; Sars, 1896a: 1–27, pl. 1– 4; Spencer & Hall, 1896: 236–238, figs. 9–14; Sayce, 1903: 250–252, 255 (synopsis), pl. 34, fig. 3, a–c; Chilton, 1917: 480–481; Henry, 1924: 121–122 (list), 134 (text and key).

Cyzicus (Estheria) packardi .– Wolf,1911 (list); Dakin,1914:295 (list).

Caenestheriella packardi .– Daday, 1914:108 (key), 116–120, fig.20.

Cyzicus packardi .– Bishop, 1967c: fig. D, 1; Brtek, 1997: 48 (list).

Estheria packardi var. typica Spencer & Hall, 1896: 237 , pl. 21, figs. 9–10; Sayce, 1903: 251; Chilton, 1917: 481.

Caenestheriella packardi var. typica .– Daday, 1914: 120.

Cyzicus packardi var. typica .– Brtek, 1997: 48 (list).

Estheria packardi var. cancellata Spencer & Hall, 1896: 237– 238 , pl. 21, figs. 11–12; Sayce, 1903: 251.

Caenestheriella packardi var. cancellata .– Daday, 1914: 120–121.

Cyzicus packardi var. cancellata .– Brtek, 1997: 48 (list).

Estheria packardi var. minor Spencer & Hall, 1896: 238 , pl. 21, figs. 13–14; Sayce, 1903: 251–252.

Caenestheriella packardi var. minor .– Daday, 1914: 121–122.

Cyzicus packardi var. minor .– Brtek, 1997: 48 (list).

Remarks. Spencer & Hall (1896: 237) described three “varieties” in Estheria packardi : “We have found it convenient to separate the species into three varieties, the extreme forms of which are clearly distinct from one another, but the occurrence of intermediate forms renders it impossible to place them in separate species.” According to ICZN rule 45.6.4 these varieties described before 1961 would have to be considered as subspecies, although the written text suggests a level below subspecific status. We think the latter could be applied here. Spencer & Hall (1896) gave no separate distribution records for the three varieties, which probably implies that different varieties were found at the same localities, and “intermediate forms” were also present.We think these two arguments in favour the “varieties” of Caenestheriella packardi being not considered as subspecies, and therefore we do not list them separately.

Distribution. Lake Bonney, near River Murray, Fowlers Bay, Cooper Creek, Macumba River and Stevenson River (South Australia); waterholes along the Finke and its tributaries (Northern Territory); Botany, Hay, Dubbo, Trangie (New South Wales).