Two new species of Bryocamptus (Copepoda, Harpacticoida, Canthocamptidae) from the Russian Arctic and comparison with Bryocamptus minutus (Claus, 1863)

By

Novikov, Aleksandr
Sharafutdinova, Dayana
Chertoprud, Elena

Type

Article

Date of Publication

2023

Original Publication

ZooKeys

Volume

1138

Pages

89--141

Subjects

Arctic invertebrates , Biodiversity , intraspecific differences , sensillae and pores , sexual arms race

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1138.90580

 

Abstract

Two new species ofBryocamptusChappuis, 1929 from the Russian Arctic from theBryocamptus minutusspecies group are described:Bryocamptus putoranussp. nov.andBryocamptus abramovaesp. nov.A complete morphological comparison of the new species with the type speciesBryocamptus minutus(Claus, 1863) was carried out. Significant interspecific differences were shown at the level of microcharacters, such as integumental sensillae and pores, ornamentation of segments of mouthparts and swimming legs, and pores on swimming legs. A significant correlation has also been shown in the shape of the caudal rami of the females and the antennules of the males, which is likely caused by an evolutionary sexual arms race.Bryocamptus putoranussp. nov.andB. minutushave a similar structure of caudal rami, but completely different male antennules, which may indicate a convergent origin of modifications and highlights the importance of depicting male antennules in the species descriptions.