507 



In Eritrea the flowers of Momordica pteromorpha are infested by a 

 Cecidomyiid, Perrisia beccarieUa, sp. n. Unnamed Chalcids found in 

 these galls are briefly described. In the fruits of Bryonia sp. from 

 Eritrea larvae somewhat similar to those of the olive fiy [Dacus oleae] 

 were seen, and it is possible that the infestation may spread to 

 cultivated Cucurbitaceae. 



VAN Hall (C. J. J.). Ziekten en Plagen der Cultuurgewassen in 

 Nederlandsch-Indie in 1920. [Diseases and Pests of Cultivated 

 Plants in the Dutch East Indies in 1920.] — Meded. Inst. Planten- 

 ziekten, Bnitenzorg, no. 46, 1921, 50 pp. 



Owing to abundant rains during part of the normal dry season, a 

 number of insect pests did little injury in 1920. Rice borers caused 

 little loss for this reason and were not thought likelv to cause much 

 loss in 1921. 



As in previous years, potatoes were attacked by a Coccinellid, 

 Epilachna sp., while a weevil, Cylas formicarius {turcipennis) infested 

 sweet potatoes, some of the latter being also defoliated by Herse 

 {Protoparce) convolvidi. 



Forest pests included Diioniitns [ceramicus], Zeuzera coffeae, Phassus 

 [damor] (ring borer), and Hypsipyla sp., all previously reported. 

 Among other pests were Zeuzera postexcisa on Lauraceae ; Xylehonis 

 destruens in teak ; Xyleborus spp. in mahogany and Schleichera trijuga ; 

 a Coreid bug, A nopl oc nemis sp., on Cassia fistula and other Legumi- 

 nosae ; a Tingid bug on Vitex heterophylla ; Catopsilia defoliating 

 Cassia sp. ; and a Chrysomelid beetle on Pluchia indica grown as a 

 ground-covering in teak plantations. The teak caterpillar, Hyhlaea. 

 piiera, appeared to be rare during the wet season. 



\^ Cacao in an experimental plot was subject to the nocturnal attack 

 of a beetle, Adoretus sp. On some estates, where old wood had not 

 been thoroughly removed, boring beetles, Xyleborus sp., proved 

 troublesome. 



Cassava suffered, as usual, from mites ; another pest was a scale, 

 Lepidosaphes [Mytilaspis) sp. 



Hevea was infested by Coptotermes gestroi, Acanthopsyche snelleni, 

 and Liparid caterpillars. 



Cotton was injured by E arias fabia in most fields. 



Kedele [Glycine soja] was again severely attacked by the pod borer, 

 Etiella zinckenella ; the stem borer, Agromyza sojae, occurred every- 

 where, but this fly did little injury. Other pests were Chrysomehd 

 beetles, leaf- caterpillars and Epilachna sp. 



Cinchona was infested by Helopeltis theivora, H. antonii, the cater- 

 pillars of Euproctis flexuosa and [Attacus atlas], and mites. 



Coconuts continued to be infested by Brachartona catoxantha. 

 Oryctes rhinoceros did considerable injury in some localities. Hidari 

 irava was reported from one district. Psychid caterpillars and those 

 of the Limacodids, Parasa lepida and Belippa lalcana, the Hispid 

 beetles, Brontispa longissima and Plesispa sp., and the palm weevil, 

 Rhynchophorus [ferrugineus], also infested coconuts. 



Coffee was attacked to an increased degree by Stephanoderes hampei, 

 contrary to the hopes previously entertained of hmiting this beetle. 

 Other coffee pests included the twig borer, Xyleborus coffeae ; the red 

 borer, Zeuzera coffeae ; the scales, Coccus {Lecanium) viridis, 



(4286) 2 L 2 



