96 MISC. PUBLICATION 4 7 0, U. S. DEPT. OF AGRICULTURE 



Hosts. — Adults have been reared from cypress (Gupressus sp.) col- 

 lected by F. C. Craighead in Arizona, from Vauquelinia calif omica 

 (Torrey) Sargent collected by G. Hofer in the same State, and from 

 Utah juniper (Juniperus utaJiensis (Engelmann) Lemmon) collected 

 by D. De Leon in Utah. Burke (1918) records the larvae mining the 

 bark and sapwood of dead and dying Rocky Mountain red cedar 

 {Juniperus scopulor-um Sargent) and alligator juniper (Juniperus 

 pachyphloea Torrey) in Arizona and Colorado. The adults have been 

 collected on one-seed juniper (Juniperus monosperma (Engelmann) 

 Sargent) and mountain cedar (Juniperus mexicana Sprengel). 

 Chamberlin (1926) also records the species from Port Orford cedar 

 (Ghamaecyparis lawsonianu (A. Murray) Parlatore). 



The sculpture on the dorsal surface of the body is rather constant, 

 but the color is variable. The pronotum is usually more reddish 

 cupreous than the elytra, but occasionally specimens are found with 

 the pronotum of the same color as the elytra, and the densely punctured 

 areas on the elytra vary from brownish cupreous to bronzy green. The 

 front of the head is rarely uniformly greenish or brownish cupreous, 

 and often with the longitudinal carina bifurcate anteriorly, and with 

 smooth callosities. The pronotum is usually parallel-sided, slightly 

 sinuate at the middle, but in a few specimens it is widest at the apical 

 third, with the sides obliquely converging posteriorly, and arcuately 

 constricted at the base, and with a shallow median sulcus on the disk. 

 In most specimens the prosternum is rounded in front, but occasionally 

 specimens are found with an indistinct median lobe. The eighth 

 abdominal tergite is either rounded or vaguely emarginate at the apex. 

 The length is from 6.5 to 10 mm. 



Through the kindness of Dr. Chamberlin the writer was able to 

 examine the types of scotti, and with the small series available was un- 

 able to separate it from ignicollis. Chamberlin in his description states 

 that the anterior tibia of the male has a very prominent, obtuse tooth 

 about one-third from the apex, and that scotti differs from 

 ignicollis "by the duller color, front [of head] bronze not green as in 

 the latter; the very large tooth [on the anterior tibia of the male] 

 fully one-third from the tip, whereas in ignicollis the smaller tooth is 

 about one-fifth from the tip of the tibiae." In a large series of 

 ignicollis examined (including the type) the color on the front of the 

 head and the dorsal surface of the body is variable, and the tooth 

 on the anterior tibia of scotti and of ignicollis is of the same shape and 

 in the same position in both types. The genitalia are identical in both 

 species. 



(34) Chrysobothris speculifer Horn 



(Fig. 34; fig. 115, E) 



Chrysobothris speculifer Horn, 1886, Amer. Ent. Soc. Trans. 13 : 80, 83-84, pi. 3, 

 figs. 56-60; Kerremans, 1892, Soc. Ent. de Belg. Mem. 1: 221; Fall, 1901, 

 Calif. Acad. Sci. Occas. Papers 8 : 22, 117 ; Wickham, 1902, Iowa Univ. Lab. 

 Nat. Hist. Bui. 5: 268; Chamberlin, 1926, Cat. Buprestidae North Amer., 

 p. 172; Obenberger, 1934, in Junk (pub.), Coleopt. Cat., pt. 132, p. 652. 



