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, 5/);Vj//(j/;/i), both 2^ inches long, and with the lateral margins 

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

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

 The cloaked knotty-horn, Dcsiiwccnis paUiatus (PI. II, Fig. 1), is a 

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

 yellow ; the larva; bore in cldcr-i)ith. Cyllcnc robinia , the locust-borer (PI. II, 



Fio. 395. — Maple-lree borer, KUiphidioii villosiim, larva, pupa, ami adult beetle. 

 (After Felt; natural size.) 



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

 its larva; live in locust-trees. A .similar .species, Cyllene fnctus, attacks the 

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

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

 the larva; bore into the lower stems and roots. Two beautiful Cerambycids 

 of California are shown in Figs. 2 and 16 of PI. II. 



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

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

 I incli long, is black, brilliantly marked with yellow; the eggs are laid in 



