. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig. 0. Geub of Hardback. REPORT ON A VISIT TO ST. KITTS. PART II. THE HARDBACK. The Small brown haidbuck occurs in considerable numbers in cane fields and other cultivated land in'certain districts in St. Kitts. This insect has been identi- fied, through the courtesy of Mr. Guy A. K. Marshall, Scienti- fic Secretary of the Entomologi- cal Research Committee, as Lach- nosterna patruelis. The grubs of this species are of the typical form of the white grubs or hard- back grubs, while the beetle is of the usual hardba
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fig. 0. Geub of Hardback. REPORT ON A VISIT TO ST. KITTS. PART II. THE HARDBACK. The Small brown haidbuck occurs in considerable numbers in cane fields and other cultivated land in'certain districts in St. Kitts. This insect has been identi- fied, through the courtesy of Mr. Guy A. K. Marshall, Scienti- fic Secretary of the Entomologi- cal Research Committee, as Lach- nosterna patruelis. The grubs of this species are of the typical form of the white grubs or hard- back grubs, while the beetle is of the usual hardback form, but considerably smaller than the ordinary hardbacks. The occurrence of these insects in abundance in the sugarcane fields of St. Kitts is of interest in view of the importance of .similar pests in other countries. In Mauritius, serious losses have been oceasioneJ by the attacks of Phi/talus smitld which is the same insect as that known in Barbados (see Agricul- tural Neios, Vol. XI, p. 90) as the brown hardback. In Porto Rico another species of Lachnosterna occurs as a pest of importance in sugar-cane fields; and in other countries related species of insects are attracting attention either because of the injury they are known to cause, or on account of what they are suspected of being capable of doing. The brown hardback in Barbados is parasitized by a small black wasp which is probably responsible for keeping it in check. In St. Kitts a wasp related to the Barbados species was observed in the cane fields and a hardback grub was found with a larva of a hymenopterous insect attacking it. This is suspected to be a parasitism similar to that known to occur in Barbados, but the relation between the wasps observ- ed in the fields and the parasitic grub attacking the hardback larva has not been proved. THE ROOT BORER. The root borer discovered in the sugar-cane fields in St. Kitts appears to be of a different species from that which occurs in Barbados, but in its manner of
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