802 



F\ Mil ;Y XXXIX. BUPRESTID^]. 



Throughout the State; frequent, May 24- August 11. Occurs 

 on oak and willow. The short, robust antennas, lack of projecting 

 carina of last dorsal segment and lack of pubescent spots on elytra 

 are the principal distinguishing characters of this species. 



1522 (4731). 



Fig. 311. 



a, Elytral markings of A. fallax; b, same of A. obsoleto- 

 guttntus; c, same of lecontei. (After Horn.) 



AGRILUS FALLAX Say, Trans. Aruer. Phil. Soc., VI, 1836, 163; 

 ibid. II, 596. 



Moderately elongate, 

 slender. Dark olivaceous, 

 often with a greenish tinge ; 

 each elytron with three 

 small round pubescent 

 spots, one basal, one before 

 the middle and one on api- 

 cal third. Antennae long, 

 slender, reaching hind an- 

 gles of thorax. Occiput 

 with a feeble median im- 

 pression. Thorax very lit- 

 tle wider than long, sides 

 curved in front, slightly 

 sinuate near hind angles, 

 which are acutely rectangu- 

 lar and with a sharply de- 

 fined straight cariua ; disk 



with a vague median depression on basal half and two lateral depressions ; 

 surface transversely strigose-puuctate. Elytra gradually narrowed at ap- 

 ical third, tips rounded and serrulate ; disk slightly flattened with a vague 

 costa each side. Length 4-6 mm. (Fig. 311, .) 



Throughout the State ; frequent ; more so in the southern coun- 

 ties. May 17-October 17. Occurs on locust and oak. 



1523 (4732). AGRILUS OBSOLETOGUTTATUS Gory, Monog. Buprest.. IV, 1837, 

 256. 



Elongate, slender. Brassy black or dark olivaceous, feebly shining ; 

 each elytron with three pubescent spaces, the middle one elongate; often 

 also a small spot on side near the end of the middle one. Front flat, with 

 a depression at its upper part. Thorax very little wider than long, slightly 

 narrowed at base, sides feebly curved, hind angles with a well defined 

 straight carina ; disk with a median depression near apex, lateral depres- 

 sions feeble; surface transversely strigose-punctate. Elytra as in fallax, 

 the basal impressions deeper. Length 6-8 mm. (Fig. 811, 6.) 



Northern half of State, frequent; Perry County in the south. 

 May 29-June 19. The greater length, elongate middle spot of 

 elytra and notched front margin of prosternum readily distinguish 

 this species from fallax. 



