VROCEEDINGS OF 'THE SECOND ENTOMOLOGICAL MEETING 225 
We will go on to the pests of mango fruits. We have :— 
Cryptorhynchus mangifere. 
a gravis. 
% poricollis. 
Chetodacus ferrugineus. 
3 zonatus. 
6 correctus. 
Nephopteryx sp. 
Cryptorhynchus mangifere [ South Indian Insects,” p. 341, fig. 200] 
is common throughout Southern India and sometimes practically all 
the fruits contain larve of this species. The larva feeds on the con- 
tents of the mango stone, and pupates inside the stone, the weevil boring 
its way out. As a rule the weevil does not emerge until after the fruit 
is ripe, so that the fruits are very little spoilt for eating purposes. 
C. mangifere has a very wide distribution, having been recorded 
from India, Ceylon, Java, Chagos Islands, Mauritius, Réunion, 
Madagascar, Zanzibar, Natal and Hawaii. In India it seems to occur 
“chiefly in the South, and we also have a specimen from Rangoon. It 
is, of course, very easily distributed with ripe fruit’and may be carried 
all over India in this way ; we have, for example, a specimen from 
Lahore, but it was found in imported fruit and may have come from 
a long distance. 
Cryptorhynchus gravis we know from Rangpur in Bengal, Silchar in 
Assam, and Maymyo in Burma and we also have a specimen taken at 
Pusa “on Bombax stem.” It apparently replaces C. mangifere in 
North-Eastern India and is said to be a bad pest in Bengal. It does 
not seem to occur in mango fruits at Pusa. - 
At Maymyo in Burma, the mango trees in the Government Gardens Mr. Shroff. 
are badly affected by C. gravis. The grubs are heavily parasitized. 
The attacked mangoes do not ripen well ; sometimes they fall ‘off pre- 
maturely. 
Cryptorhynchus poricollis is referred to in Entomological Note 28 Mr. Fletcher. 
in Bulletin 59. It seems to be confined to Bengal. 
A Cryptorhynchus, which may be C. poricollis, is a bad pest in Dacca Mr. P. C. Sen. 
and throughout Eastern Bengal and Assam, and sometimes the whole 
crop is spoilt. The grub and pupa are found inside the pulp of the 
fruit and not in the stone as in the case of C. mangifere. This point 
may be confirmed by cutting open green fruits when the grubs will be 
found in the pulp. The grubs are found from May to August. This 
pest is not bad in young plants but the attack is very serious in the case 
of older trees. : 
R 
