Dolichopus signifer Haliday, 1838 (Dolichopodinae)

Pollet, Marc, Andrade, Rui, Gonçalves, Ana, Andrade, Pedro, Jacinto, Valter, Almeida, Jorge, Braekeleer, Anja De, Calster, Hans Van & Brosens, Dimitri, 2019, Dipterological surveys in Portugal unveil 200 species of long-legged flies, with over 170 new to the country (Diptera: Dolichopodidae), Zootaxa 4649 (1), pp. 1-69 : 36

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.

Figures

FIGURE 3. Selected Portuguese species. A. Chrysotus blepharosceles (♀); B. Chrysotus cilipes (♂); C. Chrysotus laesus (♂); D. Diaphorus exunguiculatus (♂); E. Dolichopus andalusiacus (♂); F. Dolichopus atratus (♂); G. Dolichopus diadema (♂); H. Dolichopus latilimbatus (♂); I. Dolichopus nubilus (♂); J. Dolichopus plumipes (♂); K. Dolichopus signifer (♂); L. Dolichopus tanythrix (♀); M. Gymnopternus cupreus (♂); N. Gymnopternus silvestris (♂); O. Hercostomus appendiculatus (♂); photos by Rui Andrade, except for C by Leo Verdoodt.