Dr. Éva Murai szerk.: Miscellanea Zoologica Hungarica 4. 1987 (Budapest, 1987)
Stifter, P.: Ilyocryptus verrucosus Daday, 1905: a junior synonym of I. spinifer Herrick, 1882 (Crustacea: Cladocera)
MISCELLANEA ZOOLOGICA HUNGARICA Tomus 4. 1987 p. 27-31 Ilyocryptus verrucosus Daday, 1905: a junior synonym of I. spinifer Herrick, 1882 (Crustacea: Cladocera) By P. STIFiER (Received August 6, 1986) ABSTRACT. The type material of Ilyocryptus verrucosus Daday, 1905 has been compared with South American sexual females of I. spinifer. The species name verrucosus Daday, 190 5 is found to be invalid and the junior synonym of I. spi nifer Herrick, 1882. The ephippium of the South American I. spinifer is described with some remarks. KEY WORDS: Ilyocryptus verrucosus, I. spinifer , junior synonym, ephippium, redescription 1. INTRODUCTION The Hungarian zoologist Dr. Jenő DADAY de Deés described the species Ilyocryptus verrucosus from Paraguay (DADAY, 1905). No other specimens of this species have been collected and mentioned in the literature from that time. STINGELIN (1913) described the populations of I. halyi var. longiremis (now the junior synonym of I. spinifer Herrick, 1882) from Colombia and he reported some specimens with granulation of the valves which resemble DADAY's species, I. verrucosus. Prof. SMIRNOV in his monograph (1976) reported the type material of I. verrucosus and he commented that the granulation of the valves a key character of the species - is inadequately figured in the original description. In fact the depressions and the protrusions are not so marked. The eiphippium of I. spinifer was first described by SARS (1901) from mud samples collected near Sao Paulo and Itatiba, Brazil. A comparison of the material from Trinidad, the type material of I. verrucosus and the description and figure of the ephippium given by SARS (1901) result in the conclusion that the species I. verrucosus Daday, 1905 is not a valid species. MATERIAL AND METHODS Material examined: 1. I. verrucosus Daday, 190 5: LECTOTYPE (designated by Dr. L. FORRÓ), one female in alcohol, Paraguay, (D 1917-26; 11-454). 2. I. verrucos us Daday, 1905: PARALECTOTYPES (designated by Dr. L. FORRÓ), five females (one dissected) on slide, Paraguay, (D III50; II/P-404). 3. I. halyi (= I. spinifer Herrick, 1881), parthenogenetic female and male (?) on slide, Paraguay, (III- 52; II/P-403). 4. I. halyi, parthenogenetic female on slide, Paraguay, (III51; II/P-402), in poor condition. 1-4: from DADAY's collection in the Hungarian Natural History Museum, Budapest, Hungary. 5. I.spinifer Herrick, 1882, eight sexual females and 14 parthenogenetic females on five slides, Trinidad (South), Waterloo Road, 23.2.1979, leg. T. GOPEE. c
