Female macropterous and broadly robust; body blackish-brown, antennae paler with III and V yellow; forewings dark particularly at fork of veins, and with two blacker swellings on fore margin; microtrichia on surface of wing near base almost tuberculate. Antennae with 7 or 8 segments, VI–VIII forming a tapering unit; sensoria on III and IV forked. Head transverse, ocellar hump long. Pronotum strongly transverse. Metanotum with broad triangular area. Mesosternum reticulate, metasternum trasversely striate; metafurca long and V-shaped. Tergites II–VIII with median setae long, arising on sides of median reticulated groove, IX–X with similar groove; tergites with smooth craspedum medially, toothed craspedum laterally; VIII with long posteromarginal comb. Sternites boldly reticulate, with unlobed craspedum.
Two species are included in this genus. One of these is polyphagous and widespread in the tropics, and is sometimes considered a minor pest, for example on Eucalyptus in Brazil. However, R. javanicus is known only from Java and northern Australia. This species has only two dark swellings on each forewing, whereas R. syriacus has three. Both species are unusual in their body shape.
Kununurra in the north of Western Australia, Darwin in Northern Territory, and Cairns on the northern Queensland coast.
Not known; found on an unidentified vine near Cairns, Australia
Breeding on mature leaves