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(3) Rhizopertha pusilla, belonging to the family Ptinidae, a 

 minute brown beetle, commonly found in warehouses, 

 attacking wheat, sorghum seed and biscuits. (4^ Calandra 

 oryzae, Chele-pokd, belonging to the weevil (Curculionidae) 

 family, is the most destructive of all warehouse pests. It is 

 a very small dark brown beetle with a long snout and 

 jointed antennae. The larvae live inside the grains of rice, 

 wheat, maize, sorghum, etc. (5) Bruchus chinensis belonging 

 to the family Bruchidae is a small brown beetle which is 

 very destructive to stored gram, arahar and other pulses. 

 The larvae are little white grubs which live in the pulse 

 seeds. (6) Bruchus emarginatus is a large grey weevil 

 which destroys stored peas. 



1,198. Of boring and tunnelling beetles may be mentioned 

 the following : (i) Oryctes rhinoceros belonging to the 

 family Dynastinae (Goliath beetles or mdl-poka) is a very large 

 black beetle with a protuberance on the upper part of its 

 head something like the protuberance on the head of a rhino- 

 ceros, which damages cocoanut trees by cutting large holes 

 in them through the young leaf shoots. (2) (Rhynchophorus 

 ferrugenous, or (Chinre-kota) and (3) Sphcenophorus planipen- 

 nis are two weevils which also bore into the trunks of cocoa- 

 nut and date palms. (4) The flattened legless larvae of various 

 species of beetles belonging to the family Buprestidae, tunnel 

 into timber and stems of various plants. (5) The Bamboo ghun 

 (Dinoderus sp.) and other ghun insects are also minute beetles 

 belonging to the family Ptinidae. Dinoderus minutans is the 

 commonest perforator of ripe sugar-cane. (6) The mango 

 fruit weevil, Cryptorhynchus mangifera (Fig. 66 d) is also a 

 tunneller. (7) Platydactylus sexspinosus, belonging to the 

 family Scolytidae, is a small brown beetle, which tunnels into 

 the stalks of paddy plants. (8) The Xyloborus perforans or 

 Beru-poka of sugar-cane is a boring beetle. (9) The sweet- 

 potato weevil (Cylas formicarius) may be also mentioned 

 among this class. 



