112 



ARTHROPODA 



on its elytra. The pine tree borer may live in wood 

 made into furniture for fifteen years. The maple borer 

 destroys annually many maple trees. It is well for the 



FIG. 127. Beetle of 

 the locust borer. 



FlG. 128. Firefly or Lightning bug; a, larva; 6, 

 pupa ; c, adult. 



pupil to remember that not only the larvae of many 

 beetles, but also the Iarva3 of some of tjie Lepidoptera 

 and Hymen optera dwell 

 within living trees. 



The Serricorn Beetles 

 including several thou- 

 sand species, have ser- 

 rate antennae of me- 

 dium length. The larvse 

 vary in their habits. 

 The firefly or lightning 

 bug (Photinus pyralis) 

 passes its larval life in 

 the earth feeding on 



,, , -, FIG, 129. Click beetle and its larva, 



earth WOrmS and SOtt- Slightly enlarged. 



bodied insects. It pu- 

 pates in a cocoon of earth, and transforms to the adult 

 state in June, when it comes forth and flies about by night 

 emitting a strong light from the lower side of the posterior 



