62 A MANUAL OF DANGEROUS INSECTS. 



A. BETTER KNOWN COFFEE INSECTS. 



Tetianychus bloculatus Wood-Mason. 

 (Coffee Red Spider. Tetranychidae; Acarina.) 



Host: Coffee, tea, tomato, Firmiana colorata, Anthocephaliis cadamba. 



Injury: Injures plant by sucking juices. May be easily imported on nursery stock 

 and might attack other crops if introduced. 



Description and biology: A tiny red spider very like the common red spider of this 

 country and likely to be as dangerous. 



SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913. vol. 3, p. 97. 

 Cotes, E. C. Indian Museum Notes, 1896, vol. 3, pp. 48-56, 2 figs. 



Xyleborus coSeae Wurth. 



(Coffee Beetle. Scolytidse; Coleoptera.) 



Hosts: Coffea arabica, C. robusta, and C. liberica, Erythrina lithosperma, Melia azeda^ 

 rack, Cacao, Cinchona ledgeriana. Occasionally feeds on Hevea brasiliensis, although 

 the sticky excretion of the plant catches and holds the beetles, resulting in their 

 death. 



Injury: Considered injurious to Coffea robusta, and it is recommended that this plant 

 be discontinued in order to drive the insects to bruised or injured Hevea brasiliensis. 



Description and biology: Adult male beetle 1.1 mm. long and 0.55 mm. broad; adult 

 female 1.6 mm. long and 0.8 mm. broad; color shining brown. Bores in galleries in 

 the wood. 



Distribution: Dutch East Africa, Java, Tonkin. 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. 574. 



Zeuzera coflese Nietner. 

 (Red Coffee Borer. Cossidse; Lepidoptera.) 



Hosts: Coffee, tea, cacao, cinchona, Acalypha marginata, Anona muricata, Durantha, 

 Grevillea, Persea gratissima, Photinia, Santalum album, Swietenia mahagoni, cotton. 



Injury: Bores in the wood or stalks. 



Description and biology: Moth wing expanse 40-46 mm., head and thorax gray, with 

 black spots; wings white with blue black spots, abdomen black with white hair. 

 Bores in the wood. Pupates in larval bore near exterior. The pupa emerges partially 

 before escape of moth. 



Distribution: India, Ceylon, Java, Kamerun (German East Africa). 

 SoRAUER, P. Handbuch der Pflanzenkrankheiten, ed. 3, vol. 3, 1913, p. 321. 

 Maxwell-Leproy, H. M. Mem. Dept. Agric. India, vol. 1, 1907, p. 156, fig. 41. 



Leucoptera coSeella Stalnton. 



(Coffee Leaf Miner. Lyonetiidse; Lepidoptera.) 



Host: Coffee. 



Injury: la said to have caused a loss of about 20 per cent of the crop in Brazil, 20 to 

 30 per cent of the leaves infested in Porto Rico, and a serious enemy in Cuba. Con- 

 sidered the worst of all coffee pests. Likely to be introduced on plants. 



Description and biology: Adult moth 2.5 mm. long, silver gray color, tipp)ed with 

 black on posterior end. Eggs deposited in small slits made in the leaves; the larvae 

 hatch within 4 to 6 days, live within the leaf about 3 weeks, and then leave the inte- 

 rior of the leaf through the upper epidermis and form a web, pupating on under sur- 

 face of the leaf. The adult hatches in from 3 to 7 days. 



Distribution: Porto Rico, Brazil, Cuba. 

 Cook, M. T. Est. Centr. Agron. de Cuba, Bui. 3, 1905. 



