Why So Blue? Abdomen Color in Asian Citrus Psyllid Offers Clue to Spread of Citrus Greening Disease

Asian citrus psyllid color morphs

What do horseshoe crabs have to do with citrus greening disease? Well, nothing really. But the protein that famously gives horseshoe crabs their blue blood has been found at increased levels in some Asian citrus psyllids (Diaphorina citri), which researchers suspect is evidence of the insect’s immune response to the citrus greening disease bacteria that […]