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conclusion reached is that attacks by this beetle fluctuate, and that a 

 diminished injury in one year is no guarantee against severe injury 

 the next year. There is nothing to warrant neglect of remedial 

 measures, and a careful study of the parasitic fungus is desirable. 



WuRTH (T.). Een Vuurwants {Dindymus nibiginosus, F.) die Jacht 

 op de Bessenboeboek maakt. [A " Fire Bug," D. ruhiginosus, 

 preying on the Coffee-berry Borer.]— ilf^^^^. Koffiebessenboeboek- 

 Fonds, Soerabaya, no. 3, August 1922, pp. 49-52, 4 figs. 



When in 1896 certain coffee plantations in Java were defoliated 

 by caterpillars of Oreta extensa, predacious bugs contributed materially 

 to checking the infestation. In February 1922 these bugs, identified 

 as Dindymus rubiginosiis, F., were seen drawing the coffee-berry borers 

 [StepJianoderes hampei, Ferr.] out of their bore-holes and sucking them. 

 In the forests D. rubiginosus preys on bark-beetles. Attention is 

 drawn to the resemblance between Dysdercus cingidatus, F. (a pest 

 of cotton and allied plants) and this beneficial species ; the latter 

 cannot, however, prove of any considerable use in checking the 

 coffee-berry borer. 



Gandrup (J.). Over Boeboek in Loewak-Koffle. [The Coffee-berry 

 Borer in Coffee Berries excreted by Paradoxiirus hermaphroditus.'] 

 — Meded. Koffiebessenboeboek-Fonds, Soerabaya no 3 August 

 1922, pp. 53-54. "' ' 



These investigations, made independently of those bv Leefmanns 

 [R.A.E., A, X, 566], also prove that the coffee-berry borer can be 

 spread by means of the droppings of Paradoxurns hermaphroditus. 



Friederichs (K.). Kleine Mededeelingen omtrent de Koffiebessen- 



boeboek. [Short Communications on the Coffee-berry Borer.] 



Meded. Koffiebessenboeboek-Fonds, Soerabaya no 3 August 

 1922, pp. 55-61. • ' 5 



Coca fruits bored by the coffee-berry borer [Stephanoderes hampei] 

 have been received, but experiments show that the beetle only uses 

 tliese as a shelter and not for breeding in. 



Corporaal has found that the male beetle never leaves the coffee 

 berry inside which it emerged. It remains there after the departure 

 of the females that emerged at the same time and have mated with it. 

 The author points out that this does not always lead to in-breeding, 

 as several females may bore into a given berry, and perhaps unfertilised 

 females from one berry may mate in another. Collection of the 

 blackened berries is a measure against both sexes ; collection of 

 unripe, bored berries and the artificial spread of the parasitic fungus 

 affect the female only. 



On an estate where Coffea robusta had been pruned, down to the 

 stem following berry-borer infestation, the new branches and the 

 older wood as well were bored by the beetles, which occurred in large 

 numbers. This abnormal boring was evidently due to the absence 

 of berries. The new infestation probably originated in fallen coffee 

 berries that had not been carefully cleared away. 



(S175) 2 s 



