Hyadina vockerothi Clausen, 1984

Hyadina vockerothi Clausen, 1984 View in CoL

Hyadina vockerothi Clausen 1984: 83-86 View in CoL ; type-locality: “Cranberry I., Lockeport, Nova Scotia ” [ Canada]; HT 3 [CNC, Clausen 1984].

Diagnosis. This species is easily characterised by the very short R 2+3 ( Fig. 13 View Figs 5-13 ) and the unique colouration of the face with velvet black patches at the gena ( Fig. 3 View Figs 1-4 ). Terminalia are illustrated in Clausen (1984).

Distribution. So far there are European records from Czech Republic (Zatwarnicki 1996), Denmark (Zatwarnicki 1991 misidentified as nigricornis ), Germany (Stuke 2023), Hungary (Zatwarnicki 1991 misidentified as nigricornis ) and Sweden (Zatwarnicki 1991 misidentified as nigricornis ). Beside the European records this Holarctic species is reported from Nova Scotia and Ontario ( Clausen 1984).

Biology. Hyadina vockerothi occurs in a brachypterous form and the Nearctic type material has been caught in “mouse run among Carex ” ( Clausen 1984). Adults have been recorded in April, June and July in a damp birch wood and at a densely vegetated lake shore.