The Dolichopodidae (Diptera) of Montserrat, West Indies Author Runyon, Justin B. Rocky Mountain Research Station, USDA Forest Service, 1648 S. 7 th Avenue, Bozeman, Montana 59717, USA & Montana Entomology Collection, Montana State University, Room 50 Marsh Laboratory, Bozeman, Montana 59717, USA https://orcid.org/0000-0002-0271-0511 jrunyon@montana.edu text ZooKeys 2020 966 57 151 http://dx.doi.org/10.3897/zookeys.966.55192 journal article http://dx.doi.org/10.3897/zookeys.966.55192 1313-2970-966-57 B18DEB582C8F4F95B7EF3BECC9F4D4B7 9E8EAAF1A28A5D6BA36B2D363A1BA200 Sympycnus pentachaetus Robinson Sympycnus pentachaetus Robinson, 1975: 106. Material examined. Dominica : 1 ♂, 3 ♀, St. David Parish, ca. 1 km NE Ponte Casse, Waitukubuli National Trail, 15.381490N, 61.340138W, Malaise trap, 31 May-5 June 2011. Montserrat : 1 ♀, Jack Boy Hill (top), 480 m, 16°45.797'N , 62°10.886'W , 25 June 2017, J.B. Runyon; 3 ♂, 3 ♀, Big River, 450 m, 16°45.690'N , 62°11.174'W , 28 June 2017, J.B. Runyon; 1 ♂, Bottomless Ghaut, 400 m, 16°45.994'N , 62°11.497'W , 28 June 2017, J.B. Runyon (MTEC, USNM). Distribution. Dominica, Montserrat. Remarks. Sympycnus pentachaetus adults were collected by sweeping shaded moist ground and streamside rocks in higher elevation mesic forests but at lower elevations than S. montserratensis .