The link below is from the Univ of Florida and is very comprehensive. It mentions two host plants, there are others, but the two it mentions are the Orange Jasmine and Orange boxwood.

Here is a link that might be useful: for comprehensive information

this contains a pretty comprehensive list of the host plants with a lot more info on the little bug:

PEST PROFILE

Common Name: Asian Citrus Psyllid

Scientific Name: Diaphorina citri Kuwayama

Order and Family: Hemiptera, Psyllidae

Description: The Asian citrus psyllid is 3 to 4 mm long with a brown mottled body. The head is light brown. The wings are broadest in the apical half, mottled, and with a dark brown band extending around the periphery of the outer half of the wing. The insect is covered with a whitish waxy secretion, making it appear dusty. Nymphs are generally yellowish orange in color, with large filaments confined to an apical plate of the abdomen. The eggs are approximately 0.3 mm long, elongate, almond-shaped. Fresh eggs are pale in color, but then turn yellow and finally orange at the time of hatching. Eggs are placed on plant tissue with the long axis vertical to the surface of the plant.

History and Economic Importance: Asian citrus psyllid was first found in Palm Beach County, Florida, in June 1998 in backyard plantings of orange jasmine. By 2001, it had spread to 31 counties in Florida, with much of the spread due to movement of infested nursery plants. In the spring of 2001, Asian citrus psyllid was accidentally introduced into the Rio Grande Valley on potted nursery stock from Florida. It was subsequently found in Hawaii in 2006 and in Alabama, Georgia, Louisiana, Mississippi, and South Carolina in 2008. The Asian citrus psyllid has the potential to invade California at any time, with the most likely sources of infestation being Mexico, other infested U.S. states, or Asia. There were 170 interceptions of Asian citrus psyllid at US ports on plant material with an Asian origin from 1985 to 2003.

Distribution: The Asian citrus psyllid is found in tropical and subtropical Asia, Afghanistan, Saudi Arabia, Reunion, Mauritius, parts of South and Central America, Mexico, the Caribbean, and the U.S. (Alabama, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina and Texas).

Life Cycle: Eggs are laid on tips of growing shoots, on and between unfurling leaves. Females may lay more than 800 eggs during their lives. Nymphs pass through five instars. The total life cycle requires from 15 to 47 days, depending on environmental factors such as temperature and season. The adults may live for several months. There is no diapause but populations are low in the winter or during dry periods. There are nine to 10 generations a year, with up to 16 observed under observation in field cages.

Host and Damage: The Asian citrus psyllid feeds mainly on Citrus spp., at least two species of Murraya , and at least three other genera all in the family Rutaceae. The most serious damage caused by Asian citrus psyllid is due to its ability to effectively vector the phloem-inhabiting bacterium Candidatus liberibacterasiaticus that causes citrus greening disease. In the past, this bacterium has been extremely hard to detect and characterize. In recent years, however, DNA probes, electron microscopy and enzyme-linked immunosorbent assay tests (ELISA) have been developed that have improved detection. Symptoms of citrus greening include yellow shoots, with mottling and chlorosis of the leaves. The juice of the infected fruit has a bitter taste. Fruit do not color properly leading to the name "greening". Citrus greening is one of the most devastating diseases of citrus in the world. Injury caused by psyllids results from the withdrawal of large amounts of sap from the plant as they feed and produce copious amounts of honeydew. The honeydew coats the leaves of the tree, encouraging sooty mold to grow. The once flourishing citrus industry in India is slowly being wiped out by dieback. This dieback has multiple causes but the major cause is due to greening disease.

Partial Host List

COMMON NAME
SCIENTIFIC NAME

Bael fruit
Aegle marmelos

Chevaliers aeglopsis
Aeglopsis chevalieri

Afraegle gabonensis

Afraegle paniculata

Atalantia spp.

Uganda powder flask
Balsamocitrus dawei

Curry leaf
Bergera koenigii

Cape chestnut
Calodendrum capense

Calamondin
Citrofortunella microcarpa

Citrange
Citroncircus webberi

African cherry orange
Citropsis schweinfurthii

Citrus
Citrus spp.

Clausena anisum-olens

Pink wampee
Clausena excavata

Clausena
Clausena indica

Wampee
Clausina lansium

Desert lime
Eremocitrus glauca

Eremocitrus hybrid

Kumquat
Fortunella spp.

Wood apple
Limonia acidissima

Merrillia caloxylon

Finger lime
Microcitrus australasica

Round lime
Microcitrus australis

Microcitrus papuana

Microcitronella sydney.

Mock orange
Murraya spp.

Naringi crenulata

Pamburus missionis

Trifoliate orange
Poncirus trifoliata

Chinese box orange
Severinia buxifolia

Tabog
Swinglea glutinosa

Orange climber plant
Toddalia asiatica

Toddalia
Toddalia lanceolata

Triphasia trifolia

White ironwood
Vepris lanceolata

Xanthoxylum fagara

and this shows how serious of a pest the State of California thinks it is

I would be willing to bet that sea solids fertilizer will save trees that have already been infected, and prevent other trees from getting citrus greening disease. Sea solids are the mineral salts remaining after ocean water is evaporated, and they provide the complete spectrum of minerals that enable plants to resist disease. They are available to those who are willing to try them.