INSECTS OF SILKY OAK^ SILK ' RUBBER, SISSU, SORGHUM. 195 



IMPORTANT SILKY OAK INSECTS. 



^slotes notabilis Pascoe. 

 (Silky Oak Weevil Borer. Curculionidae; Coleoptera.) 



Hosts: Silky oak (Grevillea robusta), and kaiiri (Agathis australis). 



Injury: Bores in wood and is easily transported in logs. 



Description: A beautiful grayish weevil about 0. 75 inch long, with brown and pinkish 

 markings, humeri and apical declivities of elytra acute angulate or toothed, thorax and 

 elytra tuberculate. 



Distribution: Queensland, Victoria. 

 French, C. Handbook of the Destructive Insects of Victoria, pt. 5, pp. 106-108, 



pi. 119. 



Xenocnema spinipes (Wallach) australiae Lea. 



(Spined Log Beetle. Cossonidae, Coleoptera.) 



Hosts: Grevillea robusta and Agathis australis (Dammara). 

 Injury: Riddles the wood of logs. 



Description: A small brownish black elongate beetle. Found in large numbers 

 under the bark and when the bark is removed they bore rapidly into the wood. 

 Distribution: Queensland, introduced into Victoria. 



French, C. Handbook of the Destructive Insects of Victoria, 1911, pt. 5, pp. 126- 

 128, pi. 124. 



SILK RUBBER; IRE. 



(Funtumia elastica [Kickxia]. Family Apocynacese.) 



IMPORTANT SILK RUBBER INSECTS. 



(Silk Rubber Longicorns. Cerambycidse; Lamiinse; Coleoptera.) 



Species: Acridocephala bistriata GhewolaX; East and West Africa; Funtumia elastica. 

 Moecha adusta Har.; West and East Africa; cacao, Funtumia. Phryneta hecphora 

 Thoms.; Kamerun, East Africa; Funtumia elastica. Phryneta coeca Qiievrolat; Kame- 

 riin; Funtumia elastica. 



Injury: Bore in the wood. 



SoRAUER, p. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, pp. 501, 502. 



SISSU. 

 {Dalbergia sissoo. Family Leguminosse.) 

 A tree of India, furnishing a very desirable timber. It is cultivated in California. 



IMPORT.\NT SISSU INSECT. 



LEPIDOPTERA. 

 Noctuldae. 



Plecoptera reflexa Guen($e; India; defoliator. * 



SORGHUM; KAFIR; DURRA; BROOM CORN. 



{Holcus sorghum Linnaeus. Family Graminese.) 



Owing to the large number of useful varieties of this species throughout the world 

 there is more or less commerce in the seed for propagation purposes at least. The 

 dangers of importing injurious insects would consist mainly in the shipments of seed, 

 although it is conceivable that boring insects might be introduced in brooms. 



