411 



{Calandm oryzae and Triholium confusum) and a Dermestid. The results 

 indicated that the beetle larvae could exist and. reach the adult stage 

 in arrowroot starch, but appeared unable to breed in it. There thus 

 seems little possibility of weevils proving destructive to arrowroot. 

 The attacks of Colaspis fastidiosa, the small bronze beetle, now seem 

 to be limited in area and duration. A dusting of lime on infected 

 fields appeared to do some good. Alabama argiUacea, the cotton worm, 

 was successfully controlled. Saisselia nigra was a serious cotton pest 

 only where such wild trees as almond, sugar apple and Hibiscus, which 

 were subject to its attacks, grew near the cotton fields. Hemichionaspis 

 minor has been partially cojrtrolled by cirtting the cotton trees as low 

 as possible. Calpodes ethlius, the arrowroot worm, was greatly reduced 

 in numbers by a Tachinid parasite. The Dyna.stid beetle, CyclocephaJa 

 vincentiae, has been found boring into the rhizomes of arrowroot, 

 resulting in the production of dirty and inferior starch ; the adults 

 are attracted to lights in the field. A field of cassava was badly 

 attacked by mealy-bug. Thrips were again in evidence, but not in 

 sufficient numbers to require any control measure. Two new species 

 of thrips have been identified, viz., Corynothrips stenoptera and Frank- 

 liniella melanommata. The Pentatomid, Edessa meditabunda, was 

 found on some estates and was dealt with by hand-picking. Eudamus 

 proteus, the bean leaf-roller, was abundant. 



Ehrhorn (E. M.). Report of the Division of Entomology for the 

 Biennial Period ending December 31st, 1914. — Hawaii Bd. Agric. 

 & Forestry, Honolulu. 1915, pp. 103-161, plates 15-18. 



During 1913 and 1914, the inspection of imported vegetable products 

 has been continued. Shipments of rice and beans have been watched 

 for Cakmdra oryzae, and the Pyralid, Paralipsa modesta. Improve- 

 ments have been made in the fumigating station. A list of the pests 

 intercepted by the inspectors is given. AdoreUis tenuimacidatus, the 

 Japanese rose beetle, has been very abundant in the early summer of 

 1914, owing to severe dry weather ; normally it is kept in check by 

 a fungus. Coconut plantations in Oalui and Kauai have suffered 

 from the attacks of Omoides blackburni, the leaf-roller. The pest is 

 usually kept in check by parasites of the eggs, larvae and pupae, but 

 weather conditions have been unfavourable for the increase in the 

 number of parasites. Alligator pear trees have been attacked by 

 Xyleborus immaturus. The beetle deposits its eggs on the bark and 

 the larvae burrow into the wood. The presence of the pest can be 

 detected by a white powdery substance on the limbs and trunk of the 

 tree. Affected spots should be cut out and a coating made of lime and 

 crude oil applied. Eleutheroda dytiscoides, the tree cockroach, has been 

 found on cypress hedges and trees and on Thuya plants, damaging 

 the smaller' branches by gnawing off the bark. Single trees can be 

 protected by dislodging the insects and killing those that fall to the 

 ground. Several species of cutworms have caused damage to crops. 

 Poison bait, consisting of 1 lb. Paris green or white arsenic, | gal. 

 molasses, 20 lb. bran and water, placed close beside the plants, is a 

 satisfactory remedy. Three species of mealy-bugs injure outdoor 

 plants and trees. Pseudococcus nipae attacks young figs and palms 

 and should be spraved as soon as detected with strong soap and water 



