April-June, 1920 Bulletin Brooklyn Entomological Society 47 



developing into a black tufted tubercle at base, the apices rounded, the 

 color pattern as follows: gray with a lunate black mark connecting the 

 basal tubercles, a broad gray somewhat lunate saddle-like patch just pos- 

 terior and extending to middle, this last margined posteriorly with oblique 

 black lines which continue backwards along the innermost costse for a 

 short distance then turn and run obliquely outwards towards the margin, 

 outlining triangular areas at the sides which are often more or less dark- 

 ened, and with a few small black tufts scattered over the surface especially 

 along the suture and the costse. Beneath gray and unlcolorous. The third 

 tarsal joint of all legs padded beneath with yellow hair over almost the 

 entire area, the first and second joints similarly padded over apical regions, 

 the joints of the last pair of legs to a less degree though very evidently so. 

 Male (a small specimen), length 6 mm., breadth 2 mm.; female (normal- 

 sized specimen), length 8 mm., breadth 3 mm. 



Type male and female in my collection, collected by Mr. G. R. 

 Pilate from Fremontodendron (Fremontia) californicwn Torr., 

 at Havilah, ^^ May 30, 1913, and June 13, 1913- Seven other 

 specimens, all females, collected at the same place, are also in my 

 collection. The species is named after Mr. Pilate as a slight 

 tribute for many favors. 



The species resembles the more distinctly marked specimens of 

 P. calif ornicus Schaef ., especially as regards its color pattern. It 

 differs from the latter chiefly in having three distinctly defined 

 elytral costse, the outermost only in calif ornicus being distinct, in 

 .having the tarsal joints, particularly the posterior ones, more fully 

 padded beneath with yellow hair, the first and second tarsal joints 

 of the last pair of legs in calif ornicus having hardly a trace of 

 yellow beneath, by having no yellowish hairs mixed with the gray 

 as is the case with the other, by having a transverse black lunule 

 just back of the scutellum, a triangular area at the middle of the 

 elytra merely outlined with black, not solidly black, and by hav- 

 ing in addition an oblique line running down the declivity. In 

 addition the food plant is very different, that of californicus 

 being the western yellow pine, Pinus ponderosa Dough, of pilatei, 

 the peculiar shrub, Fremontodendron. 



All of the species of Pogonocherus that are found in California 

 and probably also those found elsewhere are distinctly restricted 

 to certain types of food plants. Besides those mentioned above, 

 it has been found that P. crinitus Lee. is only found on the oaks, 

 chiefly the California live oak ; P. oregonus Lee. on the true firs. 



