Phyllium gardabagusi is a beautifully distinctive leaf insect from Java and Sumatra, formally described only recently, in 2020. Before its description, it circulated widely in culture under informal names such as “Argopuro blue coxae” or “purple coxae phyllium”, a nod to the striking violet pigmentation hidden on the inner legs. Its discovery helped untangle a long‑standing taxonomic knot within the Phyllium hausleithneri group, clarifying that several Indonesian populations previously lumped together were in fact separate, morphologically consistent species.
 
In life, P. gardabagusi is a medium-sized, elegant species with the classic broad, leaflike silhouette of the genus. Females are robust and bright green, with subtle brown edging that varies between individuals. The real visual signature, however, lies on the ventral coxae: a vivid wash of purple or blue framed by pale margins, visible only when the insect shifts or displays. Males are slimmer, more delicate, and capable of flight, with a slightly more muted colour palette but the same characteristic coxal pigmentation.
 
In captivity, this species behaves much like other Phyllium, thriving on a diet of bramble, guava, or other standard phasmid browse. It is generally hardy, though humidity and ventilation need to be balanced carefully to avoid moulting issues. Its combination of manageable size, reliable breeding, and that unmistakable flash of purple makes P. gardabagusi a favourite among leaf insect keepers and an excellent ambassador for the diversity still being uncovered within the Phylliidae.