Ilyocryptus sarsi Stingelin, 1913

Sousa, Francisco Diogo Rocha & Elmoor-Loureiro, Lourdes Maria Abdu, 2019, Identification key for the Brazilian species and subspecies of the family Ilyocryptidae (Crustacea, Branchiopoda, Anomopoda), Papéis Avulsos de Zoologia 59, pp. 1-8 : 7

Ilyocryptus sarsi Stingelin, 1913

Ovoid body, dorsal keel present but not developed, molting incomplete; setae on the posterior margin of valves with inflated base and armed with a slender and sharp spine, setulae present. Head triangular, ovoid or semi-ovoid, fornices prominent; postabdomen relatively short, preanal and postanal part of similar length; anal margin short with 6-9 setulae inserted laterally; marginal denticles of preanal part with regular morphology, relatively long; 17-20 marginal spines, of which median ones have similar length; 5-7 lateral setae markedly longer than marginal spines;“gap” between proximalmost lateral seta and anal margin not developed; basal spines on the postabdominal claw of different length.

Comments: Ilyocryptus sarsi was treated in Elmoor-Loureiro (1997) as Ilyocryptus sordidus Liévin, 1848 , a species with Palearctic distribution. However, Kotov et al. (2001) found a significant number of differences between these two species. In spite of the low number of records ( Fig. 3F ), Ilyocryptus sarsi has a broad occurrence range in Brazil.

Figures

Figure 3. Geographic distribution Ilyocryptidae Smirnov 1976 emend.Smirnov,1992 taxa of Brazil. (A) Ilyocryptus cuneatus brasiliensis.(B) Ilyocryptus paranaensis inarmatus.(C) Ilyocryptus paranaensis paranaensis.(D) Ilyocryptus plumosus.(E)Ilyocryptus silvaeducensis paraensis.(F) Ilyocryptus sarsi.(G) Ilyocryptus spinifer.