. A manual of dangerous insects likely to be introduced in the United States through importations. Dept. Agr., Bui. 93, 1911, pp. 35-40. Figs. 4, 5. 202 A MANUAL OF DANGEROUS INSECTS. Xyleborus perforans WoUaston.(Sugar-Cane Ambrosia Beetle. Scolytidse; Coleoptera.) Hosts: Sugar cane, a polyphagous insect breeding in many kinds of wood. Injury: Is very injurious to sugar cane in Java. As it bores in the stalks it can easilybe transported in shipments of seed cane. Description and biology: Adult weevils about 2 mm. long, cylindrical, without snouit,the head completely concealed from above. Pupa
. A manual of dangerous insects likely to be introduced in the United States through importations. Dept. Agr., Bui. 93, 1911, pp. 35-40. Figs. 4, 5. 202 A MANUAL OF DANGEROUS INSECTS. Xyleborus perforans WoUaston.(Sugar-Cane Ambrosia Beetle. Scolytidse; Coleoptera.) Hosts: Sugar cane, a polyphagous insect breeding in many kinds of wood. Injury: Is very injurious to sugar cane in Java. As it bores in the stalks it can easilybe transported in shipments of seed cane. Description and biology: Adult weevils about 2 mm. long, cylindrical, without snouit,the head completely concealed from above. Pupa white, about 2 mm. long with headand all appendages on the underside. Larva cylindrical, white, legless, with chiti-nizedhead. Bores in the pith of the stalk. £ggs elliptical. About 70 to 100 eggs arelaid by the parent, each at the end of a separate chamber. Distribution: Java, cosmopolitan in the tropics and sub Deventer, W. Handboek, voor de Suikerriet-cultuur, Java, 1906, vol. 2, pp. 60-66, pi. , P. Handbuch der Pflanzenkrankheiten, 3d 1913, vol. 3, pp. Fig. 97.—Cane-sueker moth (ra«/r?;a//cMSj. (Ballou.) Castnia Ileus Drury. (Cane-Sucker Moth: Giant Sugar Cane Borer. Castniidse; Lepidoptera.) Hosts: Sugar cane, banana, coconut, orchids, and Bromeliacese. Injury: Very serious borer in cane stalks. When cane is to be imported from sec-tions where this species occurs great care should be used to eliminate trash. Only thetops should be shipped, and these should be carefully examined for eggs or larvae at thebase of the leaves. Description and biology: Moth measuring over 3 inches in wing expanse, brown witha white band crossing each wing and a few yellow spots beyond. Pupa reddish brown,over an inch in length. Larva whitish, about 2 inches long, with reddish brown in the stalks of its food plants. Eggs laid singly, pinkish, elongate, pointed ateach end, ribbed, in cross section formed like a five-pointed star. Over 50 eggs are
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