144 



A MANUAL OF DANGEROUS INSECTS. 



Description and biology: Adult weevil rusty brown to blackish brown, mottled with 

 grayish patches; length 9 mm. Beak long. The entire development takes place in 



the fruit, the larvae first feeding in the pulp, 

 then entering the seed. (See text fig. 71.) 



Distribution: India (Bengal, Assam, United 

 Provinces) . 



Stebbing, E. p. Indian Forest Insects, Cole- 

 optera, p. 436, fig. 289. 



Sternochetus inangUerse Fabricius. 

 ( Cryptorhynclius.) 



(Mango Weevil. Curculionidse; Coleoptera.) 



Host: Mango. 



Injury: Serious enemy of mango, especially 

 in Hawaii, where it is reported to have infested 

 from 60 to 90 per cent of the crop. Liable to 

 be introduced in seed. 



Description and biology: Adult iceevil, varies 

 from 6 to 8 mm. in length; when nearly de- 

 veloped whitish pink in color, later changing 

 to a dark brown with yellow markings; beak 

 short, thick, and when at rest turned back 

 beneath the thorax in a groove terminating between the first pair of legs. The egg is 

 deposited in the fleshy part of the fruit, and ou hatching the larva enters the seed, 

 where it undergoes its entire development, vacating as an adult. 



Fig. 71. — Northern mango weevil (^Sterno- 

 chetus gravis): Adult. (Maxwell-Lefroy.) 



Fig. 72.— The mango weevil (Sternochetus mangiferx): a, Adult weevil, from above; h, same, from 

 below. Much enlarged. (Marlatt.) 



Distribution: Inhabits all mango regions bordering Indian Ocean, East Indies 

 including Philippines, Madagascar, Hawaii, Labuan, Straits Settlements, and South 

 Africa. (Text figs. 72, 73.) 



Van Dine, D. L. Agr. Exper. Sta. Hawaii, Press Bui. 17, 1906. 

 Marlatt, C. L. U. S. Dept. Agr., Bur. Entom., Circ. 141, 1911. 



