Mr. Robertson- 
Brown. 
Mr. Fletcher. 
Mr. Robertson- 
Brown. 
Mr. Fletcher. 
210 PROCEEDINGS OF THE SECOND ENTOMOLOGICAL MEETING 
I think that Phyllocnistis citrella is more in evidence on the common 
Khati, the ordinary rough lemon. 
The leaves of Citrus plants are eaten by :— 
Phyllocnistis citrella. 
Papilio demoleus. 
»,  polytes. 
+ memnon. 
»,  helenus daksha. 
polymnestor. 
Chilades lavus. : 
Tonica zizyphi. 
Chrysomelid Beetles. 
Peltotrachelus pubes. 
Phyllocnistis citrella is chiefly serious on young plants but also attacks 
young leaves on grown plants and sometimes burrows also under the 
epidermis of green twigs. 
Papilio demoleus is the worst leaf-eating pest of Citrus trees and 
occurs throughout India and Burma. Besides Citrus, it occurs on bael 
(4igle marmelos), and Psoralea corylifolia. ts lifehistory has been 
described and figured in “‘ South Indian Insects,”’ pp. 412-413, tab. 25, 
and more recently in Entomological Memoirs, Vol. V, pp. 33-48, tab. 6, 
and is well known to youall, so I need not go into that. Asregards 
control, the eggs and larvee may be hand-picked and in small areas 
catching the butterflies in hand-nets has been found practicable. 
In the North-West Frontier Province, Papilio demoleus is the worst 
pest of Citrus plants. Even large plants suffer seriously. 
Papilio polytes occurs throughout the Plains of India, Burma and 
Ceylon. The larva feeds on various species of Citrus, of which it is 
occasionally a minor pest, but generally quite negligible. It also feeds 
on Murraya kenigi. 
Papilio memnon has not definitely been noted as a pest of Citrus 
but at Myitkyina in Upper Burma, I saw butterflies ovipositing on 
cultivated pomelo trees. 
Papilio helenus, race daksha, which is confined to the Hill Districts 
of Southern India, is sometimes a serious pest of orange trees in South 
Coorg. 
Papilio polymnestor is also sometimes a serious pest of orange trees 
in South Coorg. 
Chilades laius occurs in most parts of India, Burma and Ceylon, 
the larva feeding on orange, lime and pomelo. It is generally found on 
the top-shoots of orange but is scarcely a pest. An Ichneumonid para- 
site, Dioctes vulgaris, has been reared at Pusa from this species. 
