Notorhinus floresi sp. nov. gen. nov.: The first records of Siphonophorida in Chile and Siphonorhinidae in South America (Colobognatha) Author Moritz, Leif https://orcid.org/0000-0002-6028-5189 Leibniz Institute for the Analysis of Biodiversity Change, Zoological Research Museum Alexander Koenig, Adenauerallee 127, Bonn, Germany & Institute of Evolutionary Biology and Animal Ecology, University of Bonn, An der Immenburg, Bonn, Germany moritz.leif@gmail.com Author Parra-Gomez, Antonio https://orcid.org/0000-0002-4144-6610 Facultad de Ciencias, Universidad Austral de Chile, Av. Rector Eduardo Morales Miranda 23, Valdivia, Chile text Arthropod Systematics & amp; Phylogeny 2023 2023-06-09 81 565 579 http://dx.doi.org/10.3897/asp.81.e100520 journal article http://dx.doi.org/10.3897/asp.81.e100520 1864-8312-81-565 D1591625B28B4400BA86CBD3C480012A B921F9FAB4DA5FA4ADB553A946F4F40E 3.1.1. Family Siphonorhinidae Cook, 1895 Remarks. The specimens ( Notorhinus floresi sp. nov. and Notorhinus sp. (MNHNC 8390)) can be placed in the family Siphonorhinidae based on the following characters: Head pyriform, not extended into beak (rostrum) (Figs 3A , 8A ); antennae elbowed; antennomere 2 longer than wide (Figs 3B , 8C ); gnathochilarium consisting of separate plates (Figs 3G , 8B ); anterior margin of collum straight (compare Enghoff et al. 2015 ; Marek et al. 2016 ). According to a key provided by Shelley (1996 : 23) members of the family Siphonorhinidae lack sensory pits on antennomeres 5 and 6 (see also Marek et al. 2012 ), as is the case in the specimens studied here (Figs 3E , 8C ). However, lack of these sensory pits seems to apply only to the North American genus Illacme ( Marek et al. 2012 , 2016 ), the Malagasy genus Madagascarhinus ( Wesener 2023 ) and the South African genus Nematozonium ( Shelley and Hoffman 2004 ), as these sensory pits have been reported for Siphonorhinus ( Attems 1930 , 1938 ) and Kleruchus (Attems, 1938).