572 



Eggers (I. H.) . Kulturschadliche Borkenkafer des indischen Archipels. 



[Bark-beetles of the Indian Archipelago injurious to Cultivated 

 Plants.] — Ent. Ber. Ned. Ent. Vereen., Amsterdam, vi, no. 126, 

 1st July 1922, pp. 84-88. [Received 19th September 1922.] 



These investigations were made on bark-beetles injurious to coffee, 

 sent to the author for identification by Mr. J. B. Corporaal from 

 Sumatra. 



The material included numerous specimens of the coffee berry 

 borer as dealt with by Mr. Corporaal in his recent publication [see 

 preceding abstract] and Dr. Roepke in 1919 \R.A.E., A, viii, 447]. 

 The species in question is considered to be Stephanoderes coffeae, Hgd., 

 which the author does not treat as a synonym of S. hampei, Ferrari. 

 It has longish, stiff bristles on the elytra, whereas Ferrari definitely 

 described the bristles as consisting of wide, short scales [cf. R.A.E.. 

 A, viii, 448]. S. coffeae was described by Hagedom from East Africa, 

 and also occurs in the Congo. In a communication to the author Mr. 

 Corporaal mentions an apparent attempt of the borer to adapt itself 

 to Teplirosia Candida grown for green manure, and he believes that 

 caution is needed as regards this plant. 



A second, smaller species fairly often found in coffee beans in 

 Sumatra is Stephanoderes arecae, Hornung, known as a pest of the 

 betel nut. This occurrence in coffee is a new record. It has been 

 taken from Javanese tree fungi and was then (1905) described as new 

 by the author under the name 5. fnngicola, which becomes a 

 synonym. 



Under the name Xyleborus coffeae Dr. Wurth has recorded a twig- 

 borer of coffee from Java. A similar species with similar habits found 

 in East Africa is X. morstatti, Hgd. The twig-borers from the east 

 coast of Sumatra submitted to the author prove to be the latter, 

 and not the Javanese X. coffeae, Wurth, which is yellow and short, 

 while the Sumatran and African specimens are blackish brown and 

 long. Mr. Corporaal found X. morstatti in oil palm, Elaeis gidneensis. 

 It will be interesting to know if either of these two species occurs on 

 other islands of the Archipelago and to which of them the coffee twig- 

 borer in Tonkin belongs. 



A beetle found by Corporaal in betel nuts proves to be Coccoirypes 

 integer, Eichh. It attacks various seeds and has been recorded by 

 Blandford from those of ebony, Diospyros cbeniim. 



In 1903, E. E. Green reported a shot-hole borer very injurious to 

 tea in Ceylon. Blandford had mentioned the same beetle in 1896 

 from Ceylon. Both writers use the name Xyleborus fornicatus, Eichh., 

 and Blandford compared his examples (from India and Ceylon) with 

 Eichhoff's type. Even here, however, the identification is not certain. 

 The author has examined specimens sent from Peradenyia by Mr. 

 Green to Dr. Hagedom. They agree with Green's description 

 {Circulars and Agricultural Journal Royal Botanic Gardens, Ceylon, 

 ii, no. 9, December 1903), but not with Eichhoff's type, now in the 

 author's possession. It is therefore described as Xyleborus fornicatior, 

 sp. n. ; the differences between it and X. fornicatus will be given in a 

 pubhcation on the Scolytids of the Archipelago. 



A specimen of Xyleborus fornicatus, Eichh., in the Hagedom Java 

 collection is recorded as taken from Hevea attacked by a fungus. It 

 must therefore be watched as a possible pest of mbber in association 

 with the fungus. 



