Chrysotus gramineus (Fallén, 1823) (Diaphorinae)

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 : 30

30. Chrysotus gramineus (Fallén, 1823) (Diaphorinae) — new to Portugal

( Fig. 8C )

Number of specimens recorded. 130.

Distribution. Europe; also North Africa. Portugal: five northern provinces.

Ecology. Prefers open grassy biotopes and, to a lesser extent, other habitats in agricultural areas; highest abundances, however, were recorded in a reed marsh and a marshland. In northwestern Europe, this species is very eurytopic and is found in a wide array of biotopes, with highest abundances in open, well-lit, rather dry grasslands.

Rarity (%). 18.4 (common). Extremely common (FL).

Activity period. May–September.

Figures

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.