64 



A MANUAL OP DANGEROUS INSECTS. 



Brachyrliiaidse (OtiorhynclildsB)— Continued. 



Diaprepes abbreviatus Linnaeus; attacks the foliage and possibly the larvse attack the roots in the West 



Indies. (See Sugar cane.) 

 Oratopus punetum Fabricius; feeds on the foliage in Mauritius and Reunion. 

 Geonomus quadrinodosus Chevrolat; feeds as larva on the leaves in Venezuela. 

 Rhadinoscopiis nociturniis Kolbe; feeds on the leaves in German East Africa. 



Scolytidae. 



Xyleborus marstatti Hagedorn; German East Africa; bores in Bukoba coffee and Coffea stemphylla. 



LEPIDOPTERA. 

 Pyralidse. 



TlUiptoceras octoguttata Fid.; German East Africa; attacks beans. 



CocUidiidse. 



Parasa lepida Cr.; Java; serious. 



Psyclildse. 



Clania crameri Westwood and C. variegata Snellenhoeven; Orient. (See Tea.) 



Lymantriidae. 



Dasychira mendosa Hiibner, D. misana Moore, D. 

 fhwaitesiMooTQ and Orgyia postica Walker; India, 

 Ceylon, Java; defoliators. 



Notodontidse. 



StauTopus alternus Walker; India, Ceylon, Java; 

 defoliates. 



DIPTERA. 



Trypetidae. 



Anastrepha fraterculus Wiedemann. (See Fruit.) 

 Ceratitis capitata W^iedemann; attacks Coffea arabica. 

 (See Fruit.) 



COLLARD. 



See Cabbage. 



CONIFERS. 



(Family Pinacese.) 



Fig. 35. — Pine bark beetle (Xylotrechus quad- 

 rives): Adult. (Maxwell-Lefroy.) 



Under this beading are treated the insect 

 pests of Douglas spruce (Pseudotsuga), fir 

 (Abies), hemlock spruce (Tsuga), larch (Larix), pine (Piniis), and spruce (Picea). 



This grouping is due to the fact that these trees have so many pests in common 

 and also because of a confusion in foreign and home literature of the names pine, 

 spruce, and fir. 



A. IMPORTANT INSECTS ATTACKING VARIOUS CONIFERS. 



Diadoxus scalaris Laporte et Gory; Dladoxus erytlirurus White 

 (Cypress Borers. Buprestidae; Coleoptera.) 



Hosts: Murray pine (Pinus frenela), Lambert's cypress (Cupressus lambertiana). 



Injury: Very destructive to the wood, boring under the bark and into the wood. 



Description: D. scalaris is the larger species. Both are greenish in color, with the 

 elytra largely reddish brown except for green basal stripes and yellow discal spots. 

 The median line of the thorax is yellow between two black or brown fasciae. Larvse 

 yellowish white. 



Distribution: Victoria, Australia. 

 French, 0. Handbook of Destructive Insects of Victoria, pt. 5, 1911, pp. 44-50, 



pis. 106, 107. 



