New species and new reports of Hyalella (Crustacea, Amphipoda, Dogielinotidae) from Argentina Author Santos, Ana Lucia Freitas Dos Author Araujo, Paula Beatriz Author Bond-Buckup, Georgina text Zootaxa 2008 2008-04-30 1760 1 24 36 https://biotaxa.org/Zootaxa/article/view/zootaxa.1760.1.2 journal article 10.11646/zootaxa.1760.1.2 1175­5334 5123700 Hyalella kochi González & Watling, 2001 Material examined: Argentina , Province of Jujuy , La Quiaca , Yavi Chico River , ( 22º05’53”S – 65º27’16” W ), 3,432 m , May 2001 , UFRGS 3244 ( 3 males , 7 females , 2 juveniles ) . Province of Jujuy , reservoir near Escuela Agrotécnica in Humahuaca ( 23º11’50”S –65º20’25”), 2998 m , May 2001 , UFRGS 3245 ( 29 males , 11 females , 12 juveniles ) . Province of Jujuy , Tilcara, lake north of Tilcara , near Rio Grande ( 23º33’50” S – 65º23’05” W ), 2,503 m , May 2001 , UFRGS 3246 ( 3 males , 6 females , 1 juveniles ) . Province of Tucumán , streamlet tributary of Rio de Los Sojas on Route 307 in the direction of Tucumán with Tafi del Valle ( 26º56’27”S – 65º39’56” W ), 1,855 m , May 2001 , UFRGS 3247 ( 15 males , 15 females , 3 juveniles ) . Remarks. This species is known from Chile , Peru , and Bolivia ( Gonzalez & Watling, 2001 ). The samples from northeastern Argentina constitute a new record in that country, and extend the distribution of this species ( Table 1 ). TABLE 1. Reports of species of Hyalella from Argentina and Falkland Islands. Species Type-locality Distribution H. curvispina Small mud puddles Chile : Punta Arenas ( Cunningham, 1871 ), Province of Concepción, Shoemaker, which dry up in Sum- Ramuntcho, Escuadrón ( Grosso & Peralta, 1999 ). 1942 mer, near Montev- Peru : Pampa of Cangallo. Brazil : Rio Grande do Sul State , river Imbé, flow- ideo, Uruguay ing into the Lagoon of Tramandaí; Uruguay : Montevideo : “Paso de la Arena”; Plajas Blancas; quite near the sea coast; but still fresh water; Carrasco Creek; from a well, 20 meters deep, subsoil line, near Montevideo ( Shoemaker, 1942 ) Brazil : Sarapuí, Rio de Janeiro State ( Oliveira, 1953 ). Argentina : Islas Malvinas ( Stock & Platvoet, 1991 ). Argentina : Argentinean lake, Puerto Bandera; laguna larga, Futalaufquen; Lacar lake, San Martín of Andes; Buenos Aires , Palomar; Neuquén , San Martín of Andes Magallanes : sector Dinamarquero ; Brazil : Southern; Uruguay and Argentina ( González, 2003 ) H. fossamanci- Bramadero river, Argentina : Bramadero river, Santa Cruz river, Las Arenas lagoon, Valle Hernii Cavalieri, Santa Cruz river, Las moso river, Patillos river, Province of San Juan ( Cavalieri, 1959 ) 1959 Arenas lagoon, Valle Hermoso river, Patil- los river Province of San Juan H. pampeana Arroyo Vitel , Buenos Argentina : Province of Buenos Aires : Arroyo Vitel; chascomús lagoon Cavalieri, 1968 Aires ( Cavalieri, 1968 ) H. neonoma Mount Pleasant Road, Falkland Islands : Unnamed creek on Wireless Ridge near Stanley; Murrell Stock & opposite the settle- River, around Stanley; small pond at Bertha’s Beach; Mullet Creek stream, Platvoet, 1991 ment of Fitzroy, Falk- at the crossing with the Mount Pleasant Road; Fitzroy river, at crossing with land Islands the Mount Pleasant Road; unnamed stream at crossing with the Mount Pleas- ant Road, opposite the settlement of Fitzroy; Big Pond, Pebble Island; small stream near settlement Pebble Island; Pond near Whaling station; Spring Rookery Hill, New Island. ( Stock & Platvoet, 1991 ) H. falklandensis Sabruno Ditch , Falk- Falkland Islands : west Falklands: Diamond Corner Paddock, 15 km NNE Bousfield, 1996 land Islands from Fox Bay; Kangaroo Stream; Crinkley Bottom Ponds, 3 km N of Fox Bay; Fox Bay West Head stream. East Falklands: large pond 5 km W of Gibraltar , San Salvador; Sabruno Ditch; Port Sussex, Shepherd’s River; Cino Brook. ( Bousfield, 1996 ) H. araucana River of Los Dervos Chile : Punta Arenas, streamlet of freshwater (Cuningham, 1871); Grosso & Per- ( Chile ) Argentina : Aropardo river, Peninsule near to Ushuaia, streamlet Gente alta, 1999 River of los Ciervos Grande, Deseado lake, Fagnano lake, Punta Arenas, Santa Cruz, Fossiles ( Chile ) (González, river, Isla Picton, Punta Arenas river of Minas, Beagle channel (Schellen- 2001 berg, 1931), Province of Santa Cruz, Magallanes , “Estância Roca Branca”; Puelo lake; Lacar lake, San Martín of andes; Verde lagoon, Chapelco; Neu- quén, Zapala, Blanca lagoon; Magallanes – river of los Dervos, Chorrillo San José, Península Brunswick; Puerto Natales, Hollemberg river; Olnie river, Santa Cruz ; province of Aysen , Pólux lake , Chorrillo de la Piedra , Seco river ( Grosso & Peralta, 1999 ). H. rionegrina El Bolson , Province Argentina : Province of Negro river: “El Bolson” ( Grosso & Peralta, 1999 ) Grosso & Per- of Negro river alta, 1999 parisons between males, excepting to H. rionegrina (G1: gnathopod 1, G2: gnathopod 2). FIGURES 27–33. Hyalella bonariensis n. sp. paratype female (UFRGS-4007), 6.69 ± 1.15 mm. 27. lateral view, 28. antenna 1, 29. antenna 2; 30. gnathopod 1: 31. detail of gnathopod 1; 32. gnathopod 2; 33. detail of gnathopod 2. Scales: (27) represent 1 mm, (28 to 33) represents 0.1 mm. TABLE 2. Morphological characters of Hyalella from argentinean territory and Falkland Isles (Malvinas). All the com-
Characters H. curvispina Shoe- H. fossamancinii maker, 1942 Cavalieri, 1959 H. pampeana Cava- H. neonoma Stock & lieri, 1968 Platvoet, 1991
Number of articles of fla- gellum of antenna 1 11 9 to 10 11 to 12 12
Number of articles of fla- gellum of antenna 2 13 9 to 14 Until 18 25
Total lenght 11,45 mm ? until 5mm 15 mm
Maxilla 1 – outer plate 9 setae + process in 9 setae + process form of needle in form of needle 9 setae + process in 9 setae without+ process form of needle in form of needle
Number of gills coxal – 2 to 6,? coxal – 2 to 6 ester- coxal – 2 to 7, esternal - 3
esternal – 3 to 7 nal - 2 to 7 to 7
G1- propodus ? Lenght is 1 and ½ its wide Width is ¾ of its lenght ?
G2- lobiform process of propodus Presence Presence Presence Presence
G2- propodus width ? Longer than wider 2/3 of its lenght ?
G2- space between dacty- lus and propodus Absent Absent Presence, triangular Absent
Curved seta in the inner ramus of uropod 1 Presence Absent Presence Absent
continued.
Characters H. falklandensis Bousfield, 1996 H. araucana Grosso & Per- H. rionegrina (female) H. kochi González & Watling, 2001 H. bonariensis n.sp.
alta, 1999 Grosso & Per- alta, 1999
Number of articles of flagellum of antenna 1 10 9 4 9 9 to 12
Number of articles of flagellum of antenna 2 12 12 5 11 12 to 15
Total lenght 9 to 11 mm 11,07 mm ? 6,9 mm 8,3 mm
Maxilla 1 – outer plate ? 9 setae without process in form of needle 9 setae 9 setae without process in form of needle 9 serrate setae, without process in form of needle
Number of gills Coxal – 2 to 6 Coxal and esternal - 3 to 7 coxal – 2 to 6, esternal – 2 to 7 coxal – 2 to 6, esternal 3 to 7 coxal 2 to 6. ester- nal: 2 to 7.
G1- propodus Hammer shape ? ? Hammer shape, lenght less than 1 and ½ the width Width is 2/3 of lenght
G2- lobiform process of propodus Presence Absent (or dis- cret) ? ? Presence
G2- propodus width ? ? ? 3/4 of its lenght 4/5 of its lenght
G2- space between dac- tylus and propodus Absent Absent Absent Absent Absent
Curved seta in the inner ramus of uropod 1 Presence Absent ? Presence Presence
This collection significantly enlarged our knowledge of the species diversity of Hyalella , increasing by 28.5% the species of this genus known from Argentina . So, it is necessary more studies of the argentinean crustacean fauna.