FIELD BOOK OF INSECTS. 



in impressed rows separated by ridges. These insects are 

 found on dead wood and under bark. 



LYMEXYLONID/E 



The name of the typical genus, Lymexylon, means "to 

 ruin wood," and the long (about .5 in.), slender, brown 

 with silky pubescence, L. sericeum, may occasionally be 

 found, particularly under the bark of oak logs. The very 

 slender larvae make small, irregular galleries. 



ClOID/ 



These are somewhat cylindrical, black or brownish 

 beetles, which rarely are more than .13 in. long. They 

 are usually found under the bark of trees and in dry, woody 

 fungi. Some species have been accused of making small, 

 round holes in woodwork and books, but they are not 

 usually injurious. 



SPINDID.E 



Similar to the Cioidae in appearance and habits. Not 

 common. 



LAMELLICORNIA 



Seep. 281. The front tibiae are dilated and strongly 

 toothed or scalloped on the outer edge. 



These are the Stag-Beetles and Pinching Bugs par 

 excellence. The terminal joints, or lamellae, of the antennae 

 of this family are not decidedly flattened but are pro- 

 longed on the inner side to form a pectinate club, the 

 joints of which can not be brought closely together.*. 

 Some of the species come freely to lights. The larvae are 

 fat, white grubs, living in decaying wood. 



1. Elytra with longitudinal grooves .................. 4. 



Elytra without longitudinal grooves ............... 2. 



2. Antennae elbowed at end of first joint, which is nearly 

 or quite as long as all the others united ................. 3. 



Antennas straight, first joint not so long; length, less 

 than .5 in .................................. . Nicagus. 



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