New arietellid copepods (Calanoida, Arietellidae) from anchialine caves in the Eastern Adriatic Sea Author Kršinić, Frano Institute of Oceanography and Fisheries Split, Ivana Meštrovića 63, HRV- 21001, Split, Croatia. Author Boxshall, Geoff A. Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW 7 5 BD, U. K. text Zootaxa 2021 2021-04-01 4951 1 107 129 journal article 7549 10.11646/zootaxa.4951.1.4 53e128d9-0bb2-48b4-9959-3ef2f40fc6aa 1175-5326 4655754 AB1E83A9-67B3-4435-B64E-B842EA5F2916 Metacalanus adriaticus sp. nov. ( Figs 1-6 ) FIGURE 1. Metacalanus adriaticus sp. nov. adult female, paratype; (A) habitus, dorsal view showing positions of integumental pores and sensillae; (B) habitus, lateral; (C) rostrum; (D) urosome and caudal rami, dorsal view; (E) genital double-somite, ventral showing reproductive system, cd: copulatory duct, cp: copulatory pore; g: gonopore; o: oviduct; (F) genital double-somite, lateral. FIGURE 2. Metacalanus adriaticus sp. nov. adult female, paratype; (A,B), left antennule; (C) right antennule. Material examined: Holotype : An adult female 880 µm in length from Supurina Cave , on Vis Island in the Central Adriatic Sea in Croatia ( 43 o 03’0.8”E ; 16 o 03’0.7”N ), on 13 August 2007 . The Holotype is deposited at the Croatian Natural History Museum , Zagreb , No. HPM-BSZ,1805; the paratype series comprises nine adult females and four males from different locations: 3♀ , Supurina Cave , collected on 14 December 2017 ; 1♀ , Supurina Cave collected in 2019; 1♀ , Rogoznica, 11 January 2009 ; 2♀ , ŽivaVoda, Hvar, 02 April 2005 ; 1♂ , Supurina Cave , March 2019 ; and 1♂ , Jama na punta Korente, Rovinj, 06 February 2005 . These paratypes are all deposited at the Croatian Natural History Museum, Zagreb , No. HPM-BSZ,1806. Additional paratypes : 2♀ and 2♂ ( Supurina Cave , 03 October 2005 ) were dissected on slides and are deposited in the first author’s personal collection .