Shamshev I.V.1*, Grootaert P.2 2024. Revision of the Nearctic species of the genus Tachyempis Melander, 1928 (Diptera: Hybotidae) // Russian Entomol. J. Vol.33. No.1: 124–135 [in English].

1 Zoological Institute of Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034 Russia. E-mail:

2 Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B-1000 Brussels, Belgium. E-mail:

* corresponding author

doi: 10.15298/rusentj.33.1.13

ABSTRACT. The Nearctic species of the genus Tachyempis Melander, 1928 (Diptera: Hybotidae, Tachydromiinae) are revised. The following four species are recognised: T. agens (Melander) (type species of the genus), T. calva (Melander), T. cinerea Melander and T. universalis (Melander). The following two new synonyms are proposed: T. longipennis Melander, 1958 = T. cinerea Melander, 1928; T. nervosa Melander, 1928 = T. universalis (Melander, 1910). Redescriptions, illustrations of male terminalia, known distributions and a key to species are included. In addition, Tachyempis is re-defined and a revised key to the Nearctic genera of the tribe Tachydromiini is provided.

KEY WORDS. Diptera, Hybotidae, Tachydromiinae, Tachyempis, North America.

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