The Monterey pine aphid, Essigella californica Essig, is a recent incursion into Australia. Its sudden and rapid spread into commercial Pinus radiata D. Don plantations has caused concern to the forestry industry. Laboratory-based development studies showed that the apterous morph has three instars rather than the four typical of aphids. This difference was validated by an analysis of field-collected samples. The adaptive significance of this finding is discussed in relation to other aspects of this species’ life history.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 97 • No. 4