370 



NATURAL HISrORV OF ARTHROPODS. 



Fig. 4l'1). — Oryctes nas 



The genera Strategus, JTi/lori/ctcs, and Oryctes comprise species iiot quite as large 

 as those of tlie foregoing genera, having horns or tubercles on Ijotli sexes, and with 

 the anterior feet not elongated. In Strategus, the jii-othorax usually has three horns 

 in the males and three tubercles in the females, .s'. a/itceus, a shining dark-brown 

 species about an inch in length, is found near the Atlantic coast of the United States 

 as far north as Massachusetts. In Xglorgctes, the head is horned in the males and 



tuberculate in the females. A' satgrus, which is 

 deep brown, has striate elytra, and is a little over 

 an inch in length, resembles Oryctes nasicoriiis, a 

 common European species. AT satyrus is found in 

 the same regions as is Strategus antrpus. O. nasi- 

 rornis frequents tanners' refuse used to surround 

 hot-be<ls in northern Germany. 



< 'otalpa hixs the claws of the tarsi unequal, the 

 elytra witliout a membranous margin, the thorax 

 margined at the base, the clypeus separated from 

 the front liy a suture, and ten-jointed antennre. C. 

 lanigera, the so-called goldsmith beetle from eastern 

 North America, is nearly an inch long, and light yellow in coloration. The female 

 lays her eggs singly in the ground. The eggs are waxy white, semi-transparent, and 

 oval, and measure about 0.1 of an inch in length. The larva, upon hatching, is about 

 0.3 of an inch long. It probably requires two or three years to reach full growth, 

 feeding, meanwhile, upon roots of plants. Pupation finally takes place in an oval sub- 

 terranean cavity. Tiie imago frequents many kinds of trees, but is especially fond of 

 willows, among the leaves of which it nestles during the day, since it is nocturnal in 

 habits. 



In Pelidnota there is no suture between the clypens and the front. P. pimctctta 

 is a well-known beetle about grape-vines in the eastern United 

 States. It is bro'miish yellow above, marked with black as fol- 

 lows : the jwsterior and lateral portions of the head, the scutel- 

 lum, a dot ujion each side of the prothorax, and three dots near 

 the outer margin of each elytron. Beneath, the body and the legs 

 are shining greenish black. The larva of this species lives in the 

 decavint; roots of trees, but is with difficulty distinguished from 

 other lamellicorn larva\ These beetles fiy mostly at night, re- 

 maining concealed about grajje-vmes during the day. They eat 

 grape-leaves and those of A}7ipeIopsis, but are rarely abundant enough to do real 

 damage. 



Se])arated from Cotalpa and Pelidnota by the possession of nine- 

 jointed antennae and by having elytra with a membranous margin are 

 the species of Anomala, of which A. lucicola is a serious foe to grape- 

 culture in some ])arts of the United States. Its colors are somewhat 

 variable, some specimens being yellowish brown, othei-s black, and still 

 other combinations of these two colors. The l;irv;e of Anomala have 

 not been carefully studied. The beetles often eat away the flower-buds 

 and lilossoms of the gra])e, and also are very abundant \ipon flowers of 

 species of sumac (lihus). In Europe A. ritis and other species damage grapes. 



Hexodon montandoni is a curious oval species, about 0.6 of an iui'h long, which 



Vu;. i:.n. — rduluuta 

 punctata. 



Fig. 4:il. --.■/«. 

 ala lucicnfa 



