New records of three introduced heleomyzid flies (Diptera: Heleomyzidae) in western North America

Author:

Angell Christopher S.ORCID,Gaimari Stephen D.ORCID,Woźnica Andrzej J.ORCID

Abstract

Abstract We report the presence of three Palaearctic species, Suillia variegata (Loew), Tephrochlamys flavipes (Zetterstedt), and Tephrochlamys tarsalis (Zetterstedt) (Diptera: Heleomyzidae), recently introduced to North America. We use community science (also known as citizen science) data to show that S. variegata, which was first reported in Portland, Oregon, United States of America, in 2016, has persisted in that area and has subsequently also been observed in Washington and California. Tephrochlamys flavipes, first reported in Seattle, Washington, United States of America, in 2010, has been observed comparatively more rarely, in a more restricted geographic area. The presence of T. tarsalis in the Nearctic, previously reported in Canada based on genetic barcodes, is verified from photographs taken in British Columbia, Canada and Washington. We provide updates to the keys to Suillia Robineau-Desvoidy and Tephrochlamys Loew of the United States of America and Canada. Finally, we discuss potential means of introduction and patterns of dispersal for each species.

Publisher

Cambridge University Press (CUP)

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