Marusik Yu.M.1, Nekhaeva A.A.2 2020. Redescription of two poorly known Arctic Hilaira species (Aranei: Linyphiidae) with notes on species grouping // Arthropoda Selecta. Vol.29. No.1: 133–140 [in English].

1 Institute for Biological Problems of the North RAS, Portovaya Str. 18, Magadan 685000, Russia. E-mail:

2 A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky prospekt 33, Moscow 119071, Russia.

doi: 10.15298/arthsel.29.1.12

ABSTRACT. Two poorly known Hilaira species, H. incondita (L. Koch, 1879) and H. proletaria (L. Koch, 1879) are redescribed and their copulatory organs are illustrated in detail by means of digital and SEM photographs. Maps of the known records of two species are provided as well. Species grouping in the genus are briefly discussed.

KEY WORDS: spider, Erigoninae, Siberia, Asia, Palaearctic, Nearctic, distribution.

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