Ilyocryptus paranaensis paranaensis Paggi, 1989

Kotov, Alexey A. & Elmoor-Loureiro, Lourdes M. A., 2008, Revision of Ilyocryptus Sars, 1862 (Cladocera: Ilyocryptidae) of Brazil with description of two new subspecies, Zootaxa 1962 (1), pp. 49-64 : 57-58

Ilyocryptus paranaensis paranaensis Paggi, 1989

Figure 5

Daday 1905: 191 ( Iliocryptus sordidus ); Paggi 1989: 240–245, Fig. 1 –39; Kotov et al. 2001: 1069–1070; Kotov and Stifter 2005b: 110–112, Figs 1 –11; Kotov and Štifter 2006: 110, Figs 53–54.

Type locality. Unnamed , weedy oxbow at Island Los Sapos , in the lower course of the River Salado near Santo Tomé, Paraná River basin, Province of Santa Fe, Argentina ( Paggi 1989) .

Material examined here. An adult parthenogenetic female 0.69 mm from Rio Atibaia between Itatiba and Campinas (appr. 22º57'S, 46º50'W), São Paulo, coll. on 29.iii.2000 by M.L. Kuhlmann; an adult parthenogenetic female from Lagoa do Pesqueiro , Itaici, (23°06'48.2" S, 47°11'03.0"W), Municipio de Indaiatuba , São Paulo, coll. on 14.xi.2002 by L. M. A. Elmoor-Loureiro; a parthenogenetic female from Parque Ecológico do Tietê , São Paulo city (appr. 23°29'S, 46°31'W), São Paulo, coll. on 05.iii.2001 by F. Foratto .

Diagnosis of nomenotypical subspecies. Cervical incision shallow ( Figure 5A–B ). Spinules at valve margin on inner surface ( Figure 5C ). Denticles on base of postabdomen well developed ( Figure 5D ). Proximal segment of antenna I smooth, distal segment with obscure transverse ridges. Spine of second segment of antennal exopod look unsegmented, with rounded tip, without setules ( Figure 5A ).

Description. See Kotov and Štifter (2005b). Comments. This species is recorded for the first time for Brazil. Earlier I. paranaensis paranaensis was found in Argentina, Paraguay and Venezuela, while I. paranaensis inarmatus inhabits the Usumacinta basin, Mexico ( Paggi 1989; Kotov et al. 2001; Kotov & Štifter 2005b, 2006).

Figures

FIGURE 1. Ilyocryptus cuneatus brasiliensis subsp. nov., parthenogenetic female from Itaici, Municipio de Indaiatuba, São Paulo, Brazil: A–B—adult female, lateral view; C—anterior view; D—head, lateral view; E—head shield, dorsal view; F—head, ventral view; G—labrum, ventral view; H—free margin of valve; I—antero-ventral margin; J–K—setae at posterior margin. Scale bars 0.1 mm.

FIGURE 5. Ilyocryptus paranaensis paranaensis, adult parthenogenetic female from Atibaia River, between Itatiba and Campinas, São Paulo, Brazil: A–B—lateral and dorsal view; C—posterior margin of valve, inner view; D—preanal portion of postabdomen. Scale bars 0.1 mm.