Chiriscus giambiagiae ( Torti & Bastida, 1972 ) Torti & Bastida, 1972

Poore, Gary C. B., 2009, A new species of Chaetiliidae (Crustacea: Isopoda: Valvifera) from the Río de la Plata estuary, Argentina-Uruguay, and reconsideration of Macrochiridothea and Chiriscus, Zootaxa 2119, pp. 51-65 : 53-54

publication ID	https://doi.org/ 10.5281/zenodo.188066
DOI	https://doi.org/10.5281/zenodo.6218094
persistent identifier	https://treatment.plazi.org/id/03F987FC-FFB5-FFFC-FF00-0BA3A23CFE33
treatment provided by	Plazi
scientific name	Chiriscus giambiagiae ( Torti & Bastida, 1972 )
status	comb. nov.

Treatment

Chiriscus giambiagiae ( Torti & Bastida, 1972) View in CoL new combination

Macrochiridothea giambiagiae Torti & Bastida, 1972: 16 View in CoL –22, figs 1, 2. — Harrison-Nelson & Bowman, 1990: 127 –129, fig. 1. — Carvacho, 1997: 51 (list).

Material. Holotype: Mar del Plata (Playa Peralta Ramos), Buenos Aires, Argentina, 0–2 m, 38°03´S,

57°32´W, MACN 27514 (male, 4.3 mm, examined by AS).

Paratypes: collected with holotype, MACN (4 females), MNHN Is3849 (female, examined by GCBP).

Distribution. Rio de Janeiro, Brazil (23°S), to Mar del Plata, Argentina (38°S); 2–7 m depth.

Remarks. As pointed out by Harrison-Nelson & Bowman (1990) the species was overlooked by Poore (1984) and other authors who dealt with Macrochiridothea . The limbs of M. giambiagiae are almost indistinguishable from those of Chiriscus australis and Carvacho (1997) thought it very possible that the two species were synonymous. The most significant differences are in the shape of the head (more angled in C. giambiagiae ) and the presence (in female and male C. giambiagiae ) and absence (in female C. australis ) of a lateral incision in the head. Harrison-Nelson & Bowman (1990) noted only small differences between their material from Copacabana Beach, Rio de Janeiro, Brazil, and that from the more southern type locality.