Aegla ringueleti Bond-Buckup & Buckup, 1994

Bond-Buckup, Georgina, Jara, Carlos G., Buckup, Ludwig, Bueno, Alessandra A. P., Pérez-Losada, Marcos & Crandall, Keith A., 2010, Description of a new species of Aeglidae, and new records of related species from river basins in Argentina (Crustacea, Anomura), Zootaxa 2343, pp. 18-30: 25

publication ID

http://doi.org/ 10.5281/zenodo.193342

persistent identifier

http://treatment.plazi.org/id/03AD87BD-4360-FFD3-EC93-FD1866B7F95A

treatment provided by

Plazi

scientific name

Aegla ringueleti Bond-Buckup & Buckup, 1994
status

 

Aegla ringueleti Bond-Buckup & Buckup, 1994 

Diagnosis. Anterolateral spine of carapace reaching base of cornea; protogastric lobes absent; rostrum triangular, of medium length, carinate along its entire length; front narrow; anterior angle of ventral margin of epimera 2 with small tubercle; fourth thoracic sternite raised, with tubercle; proximal outer margin of moveable finger of cheliped without lobe; fingers of cheliped without lobular tooth; palmar crest of cheliped little developed, narrow; inner margin of ventral face of ischium of cheliped with up to three tubercles; dorsal margin of merus of second pereiopod unornamented, with long setae; ventral margin of merus of second pereiopod with scale-shaped tubercles; inner margin of coxa of cheliped with one conical spine. (Modified from Bond-Buckup & Buckup 1994.)

Measurements. Mean length of cephalothorax: 23.19 mm CL (n = 3 males); 21.69 mm CL (n = 4 females). The mean of the PCW/FW ratio (2.04) confirms the narrow front; however, the areola is quadrate (mean AL/AW= 1.49 for males and 1.56 for females). Examination of new specimens and new comparative analyses led to modifications in the species diagnosis of Bond-Buckup & Buckup (1994).

New Records. ARGENTINA: Province of Salta, River Calchaqui, near city Cachi. 25 º07' 16 "S, 66 º09' 31 "W; 2346 m, 07.xii. 2001 ( UFRGS 3207, 12 M, 12 F).

Former distribution. ARGENTINA: Province of Salta, Cachi.

Present distribution. ARGENTINA: Parana River system, Salado River.

Remarks. Aegla ringueleti  was described by Bond-Buckup & Buckup (1994) on the basis of only two females, that were deposited in the Senckenberg-Museum, Frankfurt, Germany ( SMF). The collection records indicated an altitude of 4500 m. However, the locale where this species was found is quite singular, at a lower altitude than previously recorded, a mountain river with variable water volume. These streams become torrents during the spring melt, and contain little water during the rest of the year. A large population of the species was found, most of medium size, with a few large specimens. The watercourse was more than 20 m wide, only about 20 cm in depth, and had a rocky bottom, with the animals concentrated along the riverbanks. This river, embedded in the Andes, shelters the species that is the most basal ingroup taxon ( Perez-Losada et al. 2004), suggesting that A. ringueleti  became trapped in the Andes during their uplifting about 65 my ago.

UFRGS

Universidade Federale do Rio Grande do Sul

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Aeglidae

Genus

Aegla