Acropsilus niger (Loew, 1869) (Peloropeodinae)

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 : 24

1. Acropsilus niger (Loew, 1869) (Peloropeodinae)

( Figs 2A , 8 F–G)

Number of specimens recorded. 10.

Distribution. Northwestern and central Europe; also North Africa. Portugal: four provinces, both in the north and the south (this study), and Beira Alta ( Naglis & Barták 2015).

Ecology. Largely confined to river banks, both in Mediterranean (Algarve) and in mountainous areas (northern Portugal) between 80 m and 750 m. In Belgium, it has been found on both sandy banks of lakes and gravelly banks of large rivers.

Rarity (%). 5.7 (fairly rare). Extremely rare (FL).

Activity period. June, August–October.

Figures

FIGURE 2. Selected Portuguese species. A. Acropsilus niger (♂); B. Anahydrophorus cinereus (♂); C. Anepsiomyia flaviventris (♂); D. A. flaviventris (♀); E. Aphrosylus celtiber (♂); F. Aphrosylus ferox (♂); G. Argyra leucocephala (♂); H. A. leucocephala (♀); I. Campsicnemus curvipes (♂); J. Campsicnemus loripes (♂); K. Campsicnemus simplicissimus (♂); L. Campsicnemus umbripennis (♂); M. Ceratopos seguyi (♂); N. C. seguyi (♀); O. Chrysotimus molliculus (copula); photos by Rui Andrade, except for M by Valter Jacinto.

FIGURE 8. Selected Portuguese habitats of dolichopodid species. A. 4 km SSW of Manteigas, Serra da Estrela, river Zêzere, May 2014 (Orthoceratium sabulosum); B. Mouriscas, Tejo river, March 2011 (Medetera feminina); C. Salreu, Ria de Aveiro, June 2010 (Dolichopus andalusiacus, Chrysotus gramineus); D. Santa Luzia, April 2011 (Medetera ambigua); E. Santa Margarida da Coutada, March 2011 (Syntormon pallipes); F. São Marcos da Serra, Ribeira de Odelouca, September 2010 (Acropsilus niger, Hercostomus verbekei, Sybistroma dufourii); G. detail of same location; H. Tornada, Paul de Tornada, July 2010 (Poecilobothrus bigoti, Poecilobothrus principalis); I. detail of same location, with yellow pan trap.