. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig. 2. Larva of L. tuimdoms. soil of a sugar-cane field, where the canes were suffering badly from drought, the effects of root disease, and the attacks of termites and other insects. There were so many influences adversely affecting the health and condition of the cunes that it was not possible to form an ojiinion as to the exact part played by the hard back grubs. These grubs are parasitized by some hymenopterous insect, in the same manner as Phi/talus smithi in Barbados is parasitized by Tiphia parallela. Tix&g
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig. 2. Larva of L. tuimdoms. soil of a sugar-cane field, where the canes were suffering badly from drought, the effects of root disease, and the attacks of termites and other insects. There were so many influences adversely affecting the health and condition of the cunes that it was not possible to form an ojiinion as to the exact part played by the hard back grubs. These grubs are parasitized by some hymenopterous insect, in the same manner as Phi/talus smithi in Barbados is parasitized by Tiphia parallela. Tix>hia parallela occurs abundantly in St. Kitts, at certain times and in certain localities at least, and it may not be too much to assume that this is the jiarasite of Lachnosterna patriielii; but this point has not yet been proved. It is important that the adult should be raised from some of these parasitic grubs in order that the parasite may be identified. Since the first record of Lachnosterna patruelis as a probable pest of sugar- cane in 1912, this insect has been found frequently in the soil of sugar-cane fields, and it is believed to be a pest of some importance as a root feeder: it seems to be specially important in f connexion with attacks of root fungus. SITUATION IN ANTIGUA. The \ brown hard back of Antigua is Lachnosterna sp. For several years there have been complaints that grubs were seriously injuring sugar- cane in that On investiga- tion it always happened that very few grubs were to be found, until at the end of 1911, a field of onions of about 7 acres was very badly injured, almost completely destroyed in fact, and the hard back grubs were then found in great numbers. In 1914 the Entomo- logist found this insect in large numbers in ripening Indian corn which showed the effects of severe root injury. During 1915 two sugar-cane stools were .sent from Antigua to the Head Office. From the soil attached to the roots of these canes thirty-six well- grown
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