Dipterological surveys in Portugal unveil 200 species of long-legged flies, with over 170 new to the country (Diptera: Dolichopodidae) Author Pollet, Marc Author Andrade, Rui Author Gonçalves, Ana Author Andrade, Pedro Author Jacinto, Valter Author Almeida, Jorge Author Braekeleer, Anja De Author Calster, Hans Van Author Brosens, Dimitri text Zootaxa 2019 2019-08-01 4649 1 1 69 journal article 25532 10.11646/zootaxa.4649.1.1 5ddee453-14a5-41ea-bd4d-046468d3651f 1175-5326 3357623 F532DBB2-FBC4-41B2-9A5C-D98B55CF8717 53. Dolichopus signifer Haliday, 1838 (Dolichopodinae) — new to Portugal ( Fig. 3K ) Number of specimens recorded. 21. Distribution. Europe; also North Africa. Portugal : four northern provinces in this study, and Algarve (Dyte unpubl. data). Ecology. Although being collected in a variety of biotopes in Portugal , most of them encompassed riverbanks. In northwestern Europe, D. signifer prefers muddy spots in open marshlands, in particular in salt marshes and brackish marshes ( Pollet 2000 ). Rarity (%). 5.7 (fairly rare). Fairly common (FL). Activity period. April–July, September–October.