Red Gum Lerp Psyllid

This Lerp Psyllid was introduced into the Los Angeles basin in 1998 and has rapidly spread throughout the state infesting Red Gum trees.  The nymph of the psyllid forms a waxy white cap to protect it while feeding and growing.  Ants may be found in association tending the Lerps presumbably to gather the excess sugary fluid produced by the nymph.  A black sooty mold may also grow on this same sugar excreted by the nymph.  Lady Beetles have been observed prying up the white cover to eat the nymphs and parasitic Australian wasps have been introduced for biological control.  Photos by Laurel Woodley