54 MISCELLANEOUS FOREST INSECTS. 



Variations. — There is considerable variation in size, the length 

 ranging from 5.1 to 7 mm., but not much in its reddish-brown color. 

 The spots of whitish scales are usually conspicuous on the sides of 

 the pronotum and near the declivity of the elytra, but there is con- 

 siderable variation in their size, density, and color. The very 

 coarse punctures of the pronotum and the strongly elevated third 

 and fifth elytral interspaces are quite constant and characteristic. 

 Fifty-one specimens were examined, including adults, larvae, and 

 work. 



Host trees. — Pinus ponderosa and Pinus lamhertiana, in living and 

 dying thick bark on standing and felled trees, stumps, and base 

 and stems of saplings. It is evidently quite injurious. 



Distribution (Plate XX, fig. 13). — (Hopk. U. S.) California: Sum- 

 merdale and Yosemite. (U. S. N. M.) California: Lake Tahoe, 

 Placer County, Siskiyou County, under P. costatus. Washington: 

 Easton, under P.fasciatus. 



Bibliography and Synonymy. 



Pissodes costatus (not of Mannerheim) Hopkins, 1906, p. 254, fig. 64. 



14. Pissodes webbi n. sp. 



The type specimen is labeled "Type No. 7459, U. S. N. M.;" 

 name; "Pinus strohiformis; bred Nov. 12-7; Sta. Catalina Mts., 

 Ariz.; J. L. Webb, collector; 9 ; Hopk. U. S. 5722." The specimen 

 was reared with others from larvte in thick bark on small felled tree, 

 August 20, 1908. It is named for the collector. 



Distinctive characters. — This species is more closely allied to P. 

 yoseirnite, from which it is distinguished by the broader pronotum, 

 with the punctures more closely placed. 



Variations. — There is considerable variation in size, the length 

 ranging from 4.8 to 6.8 mm., and in color from nearly black to dark 

 reddish-brown. There is less variation in the spots than usual, which 

 have less white and more of the yellow scales. Over 70 specimens 

 were examined, including all stages and work. 



Host trees. — Pinus strohiformis, Pinus scopulorum, and Pinus 

 murrayana (contorta) in living( ? ) and dying bark on base and stems of 

 saplings and standing and felled trees. It is probably injurious. 



Distribution (Plate XX, fig. 14). — (Hopk. U. S.) Arizona: Santa 

 Catalina Mountains. New Mexico: Capitan Mountains and Cloud- 

 croft. 



Bibliography and Synonymy. 



Pissodes slrohi (not of Peck) Champion, 1902, p. 119. (May be above species; can 

 not be P. strobi Peck.— A. D. H.) 



