Alekseeva T.M.1*, Fefilova E.B.2, Golubev M.A.2, Bakashkina A.S.2, Mayor T.Yu.1, Timoshkin O.A.1 2024. Integrative redescription of Canthocamptus (Baikalocamptus) verestschagini (Borutzky, 1931) from Lake Baikal // Arthropoda Selecta. Vol.33. No.4: 493–511 [in English].
1 Limnological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Batorskaya str., 3, Irkutsk 664033 Russia.
2 Institute of Biology, Komi Scientific Center, Ural Branch of the Russian Academy of Sciences, Kommunisticheskaya str., 28, Syktyvkar 167982 Russia.
Tatyana Alekseeva: atm171@mail.ru https://orcid.org/0000-0001-8928-1491
Elena Fefilova: fefilova@ib.komisc.ru https://orcid.org/0000-0001-9329-3030
Tatyana Mayor: tatyanabfo@mail.ru https://orcid.org/0000-0003-4425-1330
Oleg Timoshkin: tim@lin.irk.ru https://orcid.org/0000-0001-6476-0074
* Сorresponding author
doi: 10.15298/arthsel.33.4.06
ABSTRACT. Based on new material, an illustrated redescription of the female and male of one of the rare species of harpacticoids endemic to Baikal, Canthocamptus (Baikalocamptus) verestschagini (Borutzky, 1931) is given. Since the type series are lost, we have identified a neotype. For the first time, the morphology of this species was studied in detail using a scanning electron microscope. In terms of the structure of the body and limbs, individuals of C. (B.) verestschagini are most similar to the second representative of the subgenus, Canthocamptus (Baikalocamptus) longifurcatus Borutzky, 1947, but are well distinguished by shorter and thicker caudal rami, and the V seta female rami of C. (B.) verestschagini transformed into a short thick spine; also species differs in the structure of P5. Sequence data for the mitochondrial marker COI are presented. The interspecific distances between the sequences of C. (B.) verestschagini and C. (B.) longifurcatus were 3.2–4.6%.
KEY WORDS: freshwater Harpactidoida, Canthocamptus (Baikalocamptus), Baikal endemics, scanning electron microscopy, morphology, COI.