4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Chile. Each one of these species is rather isolated from other species 

 and otherwise unusual in appearance. 



It might be noted here again that, although the genus extends 

 from Canada to Chile, the majority of the species is found in the 

 western states, particularly in California. In the East there are only 

 four species: (1) 67. pubescens, which ranges from Canada to the 

 Gulf States and from the Mississippi River to the Atlantic Ocean; 

 (2) 67. barbata, which occurs through the Middle States from Pennsyl- 

 vania to St. Louis, Mo.; (3) 67. albicans, which definitely ranges 

 from the Mississippi Valley to Texas; and (4) 67. cryptica, which is 

 known from west of the Mississippi River in the prairie states. Only 

 a few species have been described from Mexico and Central America, 

 and a few widely separated species from South America. More will 

 probably come to light in the future, but it is unlikely that they 

 will amount to the plurality of the species of our western states. 



Not much is known of the biology of any of the species. In the 

 East, 67. pubescens occurs on various species of pine, 67. barbata on 

 pine and also hickory. On the West Coast, Blaisdell reported 

 67. sequoiae on Sequoia sempervirens, and in the Sierras there is one or 

 possibly two species that occur on Libocedrus decurrens and Juniperus 

 occidentalis. Other species in the Northwest are reported on various 

 species of pine and on fir trees. In Texas the name indicates that 

 67. prosopis was found on mesquite. Another species from Argentina 

 has also been collected on Prosopis. Glyptoscelis parvula is recorded 

 on wild rose and willow, and 67. squamulata also on willow. Glyptoscelis 

 illustris is recorded several times as taken on Pinus ponderosa and also 

 on Juniperus occidentalis. And tw r o small undescribed species were 

 collected on a pure stand of Artemisia tridentata (sagebrush). Thus, 

 in general, it may be concluded that Glyptoscelis occurs on woody 

 shrubs or trees, especially coniferous trees. The larvae are under- 

 ground root feeders. 



Krauss in his revision of the species north of Mexico has designated 

 Glyptoscelis albida as the type of the genus. It was the first species 

 described by LeConte when he described the genus. 



I wish to thank the following persons for lending me specimens for 

 this study: Hugh B. Leech, California Academy of Sciences; Melville 

 H. Hatch, University of Washington; P. J. Darlington, Jr., Museum 

 of Comparative Zoology; and R. D. Pope, British Museum (Natural 

 History) . 



Key to United States Species of Glyptoscelis 



1. Claws simple, not toothed, elytra narrowly prolonged at apex, most notice- 

 able in male (Prairie States) cryptica (Say) 



Claws toothed, elytra not prolonged at apex 2 



