Tetrapar
Bactericera cockerelli ). Mode of action Adult female parasitic wasps parasitize nymphs of the fourth and fifth instar of psyllid. Additionaly, host feeding [...] occurs. Appearance The eggs of the parasitoid are covered with a mucilaginous substance and are attached to the body wall of the psyllid nymph. The larvae [...] under the nymph of the host. Adults have a black body, pale wings, and yellowish jointed legs. Males measure between 0.4 and 0.6 mm in lenght, with elongated