Revision of the genus Canthocamptus (Copepoda: Harpacticoida) with a description of a new species from the Lena River Delta (North-eastern Siberia) Author Novikov, Aleksandr 07F1C4C0-8391-4799-BD75-CE783F0FDAE9 Kazan Federal University, Kremlyovskaya St. 18, 420008 Kazan, Russia. aleksandr-novikov-2011@list.ru Author Sharafutdinova, Dayana 9840F112-2250-429C-AC1A-FC7E5C08BDCE Kazan Federal University, Kremlyovskaya St. 18, 420008 Kazan, Russia. dayana0712@yandex.ru text European Journal of Taxonomy 2022 2022-06-23 826 1 33 63 http://dx.doi.org/10.5852/ejt.2022.826.1833 journal article 83719 10.5852/ejt.2022.826.1833 2b131f8b-51d1-4ff1-9ecd-60172593070e 2118-9773 6761616 8F9A2508-BBD1-48B9-A563-FB722644CD9C

Table 7. Differences between Attheyella Brady, 1880, Canthocamptus Westwood, 1836 and Kikuchicamptus gen. nov.

	Attheyella	Canthocamptus	Kikuchicamptus gen. nov.
1 Unmodified only in the Baikalian species C. verestschagini, C. latus, C. longifurcatus and C. bulbifer (Borutzky 1952). 2 Only one species, C. iaponicus, has a normal seta V (Ishida & Kikuchi 1999). 3 Only one species, Attheyella (Attheyella) tahoensis Bang, Baguley & Moon, 2015, has 6 setae (Bang et al. 2015). 4 C. glacialis has anal operculum without spinules.
A2 exopod	1-segmented	1- or 2-segmented	2-segmented
♀ P2 Enp3 setation	5 setae or less	4–5 setae	5 setae
♂ P2 endopod	ʻ Attheyella -likeʼ or not dimorphic	ʻ Canthocamptus -likeʼ	ʻ Attheyella -likeʼ
♂ P4 Enp2 outer seta	spine	finger-like process or spine 1	spine
♀ P5 baseoendopod seta V	normal	typically minute 2	normal
♂ P5 baseoendopod setation	2–3	2	2
♂ P5 eXopod setation	5 3	5–6	6
Anal operculum	varied	semilunar, spinulose 4	semilunar or triangle, naked