The Rivellia here have only three distinct wing markings, these being two strong bands over the crossveins and the apical semi-circular spot. The wing base is weakly yellowish, and with a small indistinct subbasal spot situated immediately below the bifurcation of R2+3 and R4+5. The femora and tibiae are largely blackish (the ‘knees’ yellowish brown), the former with metallic green reflections. Macquart (1851) described a similar species, R. nigripes, though the description is brief and the species not discussed by subsequent workers. Macquart’s species probably differs at least by the lack of the subbasal small wing spot and femora lacking metallic green reflections.
Early December 2011
Mount Wellington
Ovipositing on wattle.
Mid October 2013
Bridport
Mid March 2014
Port Sorell
Late September 2014
Binalong Bay
Late September 2014
Binalong Bay
Late January 2018
Ulverstone
Late December 2015
New Town Rivulet, Lenah Valley
Mid November 2014
Knocklofty Reserve, Hobart
Feeding on wallaby faeces. The last fly is Rivellia cf. viridis.
The following flies have been infected and killed by an entomopathogenic fungi. (Explore muscid flies (house flies) with similar imfections.)
Mid March 2014
Port Sorell
Mid April 2016
Marion Bay.
Same fly 2 days later.
Mid April 2016
Marion Bay.
Second fly only about 30 cm from the fly above.
