The Antarctic holothurian genus Echinopsolus Gutt, 1990 (Dendrochirotida, Cucumariidae): brood pouches, spermatozoa, spermatozeugmata and taxonomic implications Author Bohn, Jens Michael Bavarian State Collection of Zoology, Münchhausenstrasse 21, D- 81247 München, Germany. E-mail: jens. m. bohn @ gmail. com Department Biologie II, Ludwig Maximilians-Universität München, Grosshaderner Strasse 2, D- 82152 Planegg-Martinsried, Germany. E-mail: hess @ bio. lmu. de text Zootaxa 2014 2014-07-29 3841 4 573 591 journal article 5413 10.11646/zootaxa.3841.4.7 6bdf1524-8770-4733-9ac6-91184d0a6c29 1175-5326 4928464 B07019EC-366E-4388-B744-88F6584E7F7D Genus Echinopsolus Gutt, 1990 Echinopsolus Gutt, 1990: 112 . Type species: E. acanthocola Gutt, 1990 , by original designation. Microchoerus Gutt, 1990: 105 [non Wood 1844 ]. Type species: M. splendidus Gutt, 1990 , by original designation. [ Microchoerus Gutt, 1990 is a junior homonym of Microchoerus Wood, 1844 ] Diagnosis [emended]: Cucumariidae with 10 tentacles, the two ventral considerably smaller. Sexes separate and dimorphic, genital papilla large digitiform in males, usually inconspicuous in females, five interradial anterior brood pouches in females (not present in males). Spermatozoa with fusiform head and hollow cylinder-like midpiece encircling anterior end of flagellum; multiple spermatozoa bundled by agglutinating tails to bunch-like spermatozeugmata. Calcareous deposits derived from simple multi-perforate plates.