Evolutionary-biology-model-organism
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Jadera
soapberry bugs, red-shouldered bugs, golden rain tree bugs
Jadera is a genus of scentless plant bugs in the family Rhopalidae, commonly known as soapberry bugs or red-shouldered bugs. The genus comprises 19 species restricted to the Americas, ranging from southern Canada through Argentina. Members are specialized seed-feeders on plants in the family Sapindaceae, particularly balloon vines (Cardiospermum) and golden rain trees (Koelreuteria). Jadera haematoloma is the most extensively studied species, serving as a classic model for rapid evolutionary adaptation to invasive host plants.