284 



Beetles 



narrow, with the margins of the body nearly parallel. In the south occurs 

 the genus Mallodon, and on the Pacific coast the genus Ergates (with a 

 single species, spiculatus) , both 2\ inches long, and with the lateral margins 

 of the prothorax with many fine sharp teeth. The larvae (Fig. 393) of 

 Ergates live in the giant sugar and yellow pines of the Sierra Nevada forests. 

 The cloaked knotty-horn, Desmocerus palliatus (PL II, Fig. i), is a 

 beautiful species, dark greenish blue with the bases of the elytra orange- 

 yellow; the larvae bore in elder-pith. Cyllene robinicr, the locust-borer (PI. II, 



FIG. 395. Maple-tree borer, Elaphidion mllosum, larva, pupa, and adult beetle. 

 (After Felt; natural size.) 



Fig. 15), is black, with striking yellow bands often found on goldenrod; 

 its larvae live in locust-trees. A similar species, Cyllene pictus, attacks the 

 hickory. The red milkweed-beetle, Tetraopes tetraopthalmus (PI. II, 

 Fig. 10), brick-red with black spots, is a common species on milkweeds; 

 the larvae bore into the lower stems and roots. Two beautiful Cerambycids 

 of California are shown in Figs. 2 and 1 6 of PL II. 



The sugar-maple borer, Plagionotus speciosus (Fig. 394), is a serious 

 pest of sugar-maples in New York and elsewhere in the East. The beetle, 

 i inch long, is black, brilliantly marked with yellow; the eggs are laid in 



