16 
BULLETIN 885, U. S. DEPARTMENT OF AGRICULTURE. 
simply because the adults of woglumi gather on a plant or because 
eggs and the early stage larvae have been found on it, the conclusion 
that such a plant is an important host of the insect does not neces- 
sarily follow. The only criterion as to whether a certain species 
is in reality a favorite or an occasional food plant is the finding of 
insects in all stages of development on it . 
Aleurocanthus woglumi Ashby has been recorded from 75 different 
food plants or hosts. These are distributed among 30 plant families. 
The folio wing table shows the plants on which it has been found, 
the family to which the plants belong, and the place and person who 
collected it. The plants on which it has been found in the Canal 
Zone and the adjoining parts of the Republic of Panama are marked 
with an asterisk and a number, the number indicating the class of 
the food plant as previously discussed. The writers do not presume 
to say to which class the food plants recorded by other authors 
belong, but such plants as avocado, hibiscus, various begonias, 
papaya, croton, plantain, pomegranate, star apple, and coral vine 
have been repeatedly examined in the Canal Zone and Republic of 
Panama, and in no case have any stages of the black fly been foimd 
on any of them so far. The banana is an example of a plant that is 
on the border line between the second and third classes. Out of at 
least a hundred plants that have been carefully examined only three 
colonies of the insect have ever been found on this host, and those 
were on a plant growing within 6 feet of a mango heavily infested 
with the insect. 
Table V. — Host plants of the block fly (Aleurocanthus woglumi). 
Scientific "botanical name. 1 
Family. 
Common name (Spanish 
and English). 
Locality and by whom 
reported.* 
AcalypTia Unneolata? (lan- 
ceolata Willd). 
Actiras sapota Linn. (x-2).. . 
Euphorbiaceae. . 
acalvpha 
Guantanamo, Cuba. — C. J. & 
Sapotaceae 
fnispero, sapote 
[sapodilla 
H. 
Canal Zone, Panama, R. P.— 
D. & Z. 
Cuba (Habana and Guanta- 
A nacardiu m occidental e 
Linn. (x-2). 
Annona cherimoJa Mill 
Annona muricata Linn. 
Annona squamosa Linn. 
(x-2). 
A nnona sp. (x-2) 
Antigancn leptopu-s Hook. . . 
Ardisia reioluta H. B. & K. 
(x-1). 
Bassia latifolia Roxb 
Begonia sp 
Capparis pedu ncuJosa Wall. . 
Capparis rozburghi DC 
Carica papaya Linn , 
[maranon 
►Anacardiaceae... < 
[cashew apple 
Annonaceae jehirimoya , 
\Jamaica apple , 
do fanon manteca , 
\soursop , 
[anon , 
\ do < 
[*ugar apple, sweetsop. 
do 
[rosa de montana, coral- 
Polygonaceae. . . < ito. 
[coral vine, love's chain. 
Myrsinaceae fruta de pava 
Sapotaceae mahwa. 
Begoniaceae begonia . 
Capparidaceae... caper-bush 
do 
Papayaceae 
.do. 
ffruta bomba, papava. 
ipa 
apaya 
For f ootno tes 1 and 2 see page IS. 
namo). — C. J. & H. 
. Guantanamo, Cuba.— C. J. & 
H. 
. Las Sabanas, R. P.— M. & Z. 
. \Guantanamo, Cuba. — C. J. & 
/ H. 
■\ Do. 
J Guantanamo, Cuba.— C. J. & 
H. 
. Las Sabanas, R. P.— M. & Z. 
. Canal Zone.— D. & M. 
) Guantanamo, Cuba. — C. J. & 
H. 
Las Sabanas, R. P.— M. & Z. 
. Jamaica. — R. 
. Guantanamo, Cuba.— C. J. & 
H. 
. Roval Botanical Garden, Cey- 
lon.— W. Q. & B. 
Do. 
\Guantanamo, Cuba.— C. J. & 
/ H. 
