English: (A) The leaf-mines made by the five larval instars of B. euryae on Eurya japonica. First and second instars, respectively in dark and light orange and lasted 4 and 3 days, make a serpentine mine in the adaxial epidermis. The third instar (yellow) burrow a blotch mine (black arrow), visible by a brightening of leaf color and lasted 8 days. The fourth instar (green) is associated with an inflation and a progressive yellowing of the blotch mine. It lasted about five months in our rearing. The last stage (blue) lasted from 2 to 4 weeks and was linked with the appearance of brown patches on the mine. (B) The morphology of third and fourth instar larvae. The mandibula shape, visible as the red structure on larva head, designate by its elongation a fluid-feeding habit for the third instar whereas its compactness for the fourth instar correspond to a tissue-feeder mode. Scale: 500μm.
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