biological control of gorse in New Zealand
... that Sericothrips staphylinus were released as part of biological control of gorse in New Zealand, but have not spread far because too few of them have wings?
... that <i id="mwBGI">Sericothrips staphylinus</i> were released as part of <b id="mwBGM"><a href="./Biological_control_of_gorse_in_New_Zealand" id="mwBGQ" rel="mw:WikiLink" title="Biological control of gorse in New Zealand">biological control of gorse in New Zealand</a></b>, but have not spread far because too few of them have wings?