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 134. Systenus mallochi MacGowan, 1997 (Medeterinae) — new to Portugal Number of specimens recorded. 1. Distribution. Thus far only recorded from Britain. Portugal : one province (Beira Baixa), first record for continental Europe! Ecology. The single Portuguese specimen was recorded from a Mediterranean biotope with Quercus suber and Quercus ilex . The species most likely originated from one of these tree species as Systenus species breed in rot-holes and sap-runs of deciduous trees. Systenus mallochi has been retrieved from Quercus petrea , Betula and Ulmus in Britain, and is believed to be more associated with rot-holes than with sap-runs ( MacGowan 1997 ). Rarity (%). 1.1 (very rare). Activity period. April.