Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata) Author Kim, Il-Hoi 0000-0002-7332-0043 Korea Institute of Coastal Ecology, Inc., 802 - ho, 302 - dong, 397 Seokcheon-ro, Ojeong-gu, Bucheon, Gyeonggi-do 14449, Republic of Korea ® ihkim @ gwnu. ac. kr; https: // orcid. org / 0000 - 0002 - 7332 - 0043 ihkim@gwnu.ac.kr Author Boxshall, Geoff A. 0000-0002-7332-0043 Korea Institute of Coastal Ecology, Inc., 802 - ho, 302 - dong, 397 Seokcheon-ro, Ojeong-gu, Bucheon, Gyeonggi-do 14449, Republic of Korea ® ihkim @ gwnu. ac. kr; https: // orcid. org / 0000 - 0002 - 7332 - 0043 ihkim@gwnu.ac.kr text Megataxa 2020 2020-12-24 4 1 1 6 http://zoobank.org/3fdd970e-62f1-4f67-8cce-10870bdb3c01 journal article 54097 10.11646/megataxa.4.1.1 7c9bc39d-9910-46f1-9558-c0647b9cbbdb 2703-3090 4591138 Scaridelphys papillata gen. et sp. nov. ( Fig. 441 ) Typematerial . Holotype (intact ♀ , MNHN-IU-2014- 21465 ) and paratype (intact ♀ , MNHN-IU-2014-21466) from Didemnum poecilomorpha Monniot F. & Monniot C., 1996 (Type MNHN-IT-2008-3239 = MNHNA 2/ DID.C/230), north of Sulawesi , Indonesia (0l°51.52’N, 125°03.84’E ), depth 40 m , 20 May 1993 . Etymology .Thespecificnamealludes tothepapillate ornamentation of the body and lobate antennules. Descriptionoffemale . Body ( Fig. 441A ) elongate, vermiform, cylindrical, consistingof cephalosome, long metasome and small urosome: body length 7.13 mm. Cephalosome ( Fig. 441B, C ) slightly longerthan wide, 0.87 mm wide, snake-head-shaped, gradually broadening posteriorly, but not articulated from metasome. Metasome 0.76 mm wide; posterior quarter slightly narrower than anteriorthree quarters. Bodysurfaces coveredwith minute papillae, denseondorsal andlateral surfaces, and sparseon ventral surface. Copulatory pore present posteroventrally on metasome ( Fig. 441D ). Free abdomen ( Fig. 441D ) small, unsegmented, bilobed, incompletely articulated from metasome, with deep posteromedian incision, each lobe subcircular, as long as wide; both lobes connected at base. Caudal rami and caudal setae absent. Rostrum absent.Antennule( Fig.441B, C )represented bylargesphericallobe, coveredwithpapillae,butunarmed. Antenna absent. Labrum ( Fig. 441B ) positioned posterior to antennule, strongly tapering towards blunt apex, surface covered with papillae. One pair of minute lobes ( Fig. 441B, E ), probably vestigial mandibles, positioned lateral to labrum. Other mouthparts absent. Legs absent. Male . Unknown. Remarks . This is a relatively large species, with a total body length of 7.13 mm, which is markedly larger than its congener described below.