THE CITRUS WHITE FLY I FOOD PLANTS. 29 
Table IV .—Definitely known food plants of the citrus white fly (Aleyrodes citri). 
Class I. Preferred. 
Introduced : 
1. Citrus (all species cultivated in America). 
2. China tree (Melia azedarach). 
3. Umbrella China tree (Melia azedarach umbraculifera) . 
4. Cape jessamine (Gardenia jasminoides) . 
5 . Privets (Ligustrum spp . ) . 
6. Japan persimmon (Diospyros kaki). 
7. Lilac (Syringa sp.). 
8. Coffee (Coffea arabica). 
Native : 
9. Prickly ash (Xanthoxylum clava-herculis) . 
10. Wild persimmon (Diospyros virginiana). 
Class II. Occasionally Infested. 
Introduced: 
11. Allamanda (Allamanda neriifolia). 
12. Cultivated pear (Pyrus spp.). 
13. Banana shrub (Magnolia fuscatum) . 
14. Pomegranate (Punica granatum) . 
Native: 
15. Smilax (Smilax sp.). 
16. Cherry laurel (Prunus laurocerasus) . 
17. Wild olive or devilwood (Osmanthus americanus) . 
18. Viburnum ( Viburnum nudum) . ♦ 
19. Green ash (Fraxinus lanceolata). 
In addition to those in the foregoing list J there are several plants 
reported as food plants of the citrus white fly which, while probably 
true food plants, can not consistently be included in the recognized 
list until the observations have been repeated and the infesting spe- 
cies positively identified. In some instances where eggs or larvae 
have been found there is doubt as to whether the white fly could 
develop to maturity on the plants in question. ' Plants upon which 
the insect is unable to develop to maturity can not properly be con- 
sidered true food plants. The following is the list of plants reported 
as food plants, but which in each case require further observations 
either as regards the ability of the insect to reach maturity thereon 
or as regards the species of white fly concerned, in view of the recent 
separation of A. citri and A. nubifera: Water oak, reported by Prof. 
A. L. Quaintance; Ficus altissima, Ficus sp. (from Costa Rica), and 
scrub palmetto, reported by Prof. H. A. Gossard; honeysuckle and 
blackberry, reported by Dr. E. H. Sellards; oleander, reported by 
* In addition to those already mentioned as being food plants in Florida, the follow- 
ing plants are on record at the State insectary at Sacramento, Cal., as food plants of the 
citrus white fly observed at Marysville and Oroville by agents of the State commission 
of horticulture: English ivy (Hedera helix), yellow jessamine (Jasminum odoratissi- 
mum), Ficus macrophylla, bay (Laurus nobilis), tree of Heaven (Ailanthus glandulosa), 
and crape myrtle (Myrtus lagerstrcemia) . Information concerning the authorities for 
the plants listed is not available. 
