Electrolana Schädel, Hyžný & Haug, 2021 (Crustacea: Isopoda: Cirolanidae), a Junior Synonym of Cirolana Leach, 1818 and a New Species of Metacirolana Kussakin, 1978 from Cretaceous Amber of Myanmar

Electrolana madelinae Schadel, Hyzny & Haug, 2021 was described from two excellently preserved isopod specimens from ca. 40-million-year-old amber from Myanmar. Appraisal of the two specimens and their comparison to extant genera and species of Cirolanidae show that the genus Electrolana Schadel, Hyzny & Haug, 2021 is a junior synonym of Cirolana Leach, 1818, and that the holotype and paratype represent two distinct species. The holotype is placed in the combination Cirolana madelinae (Schadel, Hyzny & Haug, 2021) comb. nov., and the paratype, a species of Metacirolana Kussakin, 1979, is here diagnosed and named Metacirolana jimlowryi sp. nov. Brunnaega roeperi Polz, 2005 is transferred to Cirolana roeperi (Polz, 2005) comb. nov. amber-preserved specimens belong to the Cirolanidae, that there are two species present in two genera and to correct the taxonomy presented in that publication. The second purpose is to demonstrate three points: 1, all isopod families are not the same with regard to development and in several families mancas and immature specimens can be unequivocally identified to genus; 2, fossil isopods need thorough comparison to extant genera and an understanding of the characters defining higher taxa to obtain the highest possible resolution identifications and so avoid publication of spurious taxa; 3, species can only be precisely and clearly described if higher-taxon characters are excluded from the species description.