96 ELEMENTARY LESSONS ON INSECTS 



6. Collect white grubs and wire- worms from the soil 

 (easiest done while sod is being overturned with the plow). 



7. Collect wood borers where seasoned firewood is being 

 split. 



8. Collect meal worms from the floor crevices of grain 

 bins. 



9. Collect weevils from infested stores of rice or wheat.* 



10. Keep larvae of these until they transform, and obtain 

 the pupae. 



11. Pin, mount and label representative beetles for the 

 collection. 



12. Care for the living material in rearing cages. 



13. Home problems on crop pests (see p. 174). 



14. Routine (see p. 204). 



* If such are not available, here are two sources of weevil larvae that 

 are generally unfailing: 



1. Acorns: gather them in quantities as soon as they fall: place them 

 in glass jars; the weevils will come out in a few days and be found in 

 the bottom of the jars; place these on the surface of a box of soil and 

 they will burrow in and (if kept in the laboratory where warm) will 

 transform to pupa by midwinter. 



2. Stems of the common weed known as lamb's quarters. The weevils 

 in these transform where they have fed; hence, keep the collected 

 material in a rearing cage (see p. 200), dip it in water every week to 

 prevent death by evaporation if kept indoors, and cut open a stem 

 now and then to note changes going on. 



