THE RED SPIDER ON THE AVOCADO. 3 
him in 1914 by W. W. Yothers, of Orlando, Fla. The writer has found 
it attacking both the West Indian and Guatemalan varieties of 
avocados (Persea gratissima) , being particularly injurious to the 
more tender West Indian types. It occasionally causes considerable 
injury to the mango {Mangifera indica) and in many sections of 
northern Florida to the camphor and Australian silk oak {GreviUea 
Fig. 
-Defoliated avocado tree during midwinter, 
foliage by the red spider. 
the result of attacks on 
robusta), to the foliage of which it imparts the same discoloration 
that it causes to the avocado. It has also been collected in Florida on 
a species of eucalyptus (Eucalyjitus sp.). In addition to these host 
plants, the writer has at times collected the red spider on Terminalia 
arjuna, Annona squamosa, Cucumis sativus, and Icacoreapaniculatu — 
the latter a plant growing quite commonly in the hammocks of south- 
ern Florida. 
