Gymnophora arcuata (Meigen)

DISNEY, R. Henry L., 2020, Scuttle flies (Diptera: Phoridae) from the canopies of ash trees in Norway, with six new species, Fragmenta Faunistica 63 (1), pp. 29-45 : 29-30

Gymnophora arcuata (Meigen)

Material. Male, Norway, Vestfold, Horten, 59.3655º N, 10.4604º E, 18 Jul 2018, J. Svetlik & I. Borja (12, University Museum of Bergen ) .

Note. In the key to the species of the European Gymnophora Macquart ( Disney 2017) G. perpropinqua Mostovski & Michaelovskaya should have been grouped with G. arcuata (Meigen) as its notopleural ridge is pale.

( Figs 1–11 )

The female was previously unknown. It is described below.

Female. Frons as Fig. 1 . Postpedicels as Fig. 2 . Palps as Fig. 3 . Notopleuron as Fig. 4 . Dorsal view of abdomen as Fig. 5 . Tergite 7 as Fig. 6 . Sternites 7 and 8 as Fig. 7 . Furca as Fig. 8 . Front tarsus as Fig. 9 . Hind femur and tibia as Fig. 10 . Basal section of wing as Fig. 11 . Wing length 2.48 mm. Costal index 0.47. Costal ratios 5.11: 1.01: 1. Haltere knob pale grayish white.

Diagnosis (female). The single lobe ( Fig. 7 ), instead of the paired lobes of most species, at the rear of sternum 8 resembles G. forresteri Disney and G. quartomollis Schmitz , but the tergites 7 ( Fig. 6 ) and sternite 7 ( Fig. 7 ) differ from both these species.

Material. Male, Norway, Vestfold, Horten, Lat. 59.3654, Lon. 10.4611, 11 Jul 2017, K. H. Thunes & S. Skätøy, (1, UCMZ, 39–93). Female , Sogn & Fjord: Stryn , 61.8605ºN, 6.3404ºE, 15 Jul 2018, J. Svetlik & L. Børjia (11, UCMZ, 39–93) .

Figures

Figs 1–6. Gymnophora winqvisti Disney female. 1 – frons; 2 – postpedicels; 3 – palp; 4 – notopleuron; 5 – dorsal face of abdomen; 6 – tergite 7.

Figs 7–11. Gymnophora winqvisti Disney female. 7 – sternite 7 and rear of sternum 8; 8 – furca; 9 – front tarsus; 10 – hind femur and tibia; 11 – base of wing