34 FAMILY II. AXTHRIBIDJE. 



X. PIEZOCORYXUS Schon., 1839. (Gr., "compressed" 4- "club.") 



Three species, ranging from 4 to 7 mm. in length, stout and 

 subcyiindrical in form, with large oval, coarsely granulated eves 

 and the front coxae contiguous or nearly so, compose this genus. 

 They have the beak broad, flat, not so long as wide, not emar- 

 ginate at tip; antenna 1 cavities large, deep, partially covered by 

 the sides of beak ; antenna? with first joint stout, rounded, second 

 nearly twice as long, conical, 3 8 more than twice as long as 

 second, slightly thickened toward tip, 9 11 forming a com- 

 pressed, elongate club. Thorax wider than long, truncate at base, 

 the ridge as described under tribal heading; third joint of tarsi 

 deeply bilobed, wider than second, the latter broad, triangular 



and emargiuate. 



KEY" TO SPECIES OF PIEZOCORYXUS. 



a. Ninth and tenth joints of antennas obliquely emarginate at tips; tho- 

 rax with two shallow depressions and three elevations occupying the 

 middle third; antennas of male one-half the length of body; length 

 7.5 mm. 19. DISPAR. 



aa. Ninth and tenth antennal joints not emarginate; thorax with impres- 

 sions and elevations less marked; antennas in both sexes shorter than 

 body. 

 1). Pubescence mottled yellow, brown and black; length 4.7 6 mm. 



20. MIXTUS. 

 Itb. Pubescence nearly black; length 4 mm. 21. MCESTUS. 



19 (9215). PIEZOCORYXUS DISPAR Gyll., Schon., 1833, 140. 



Elongate, subcylindrical. Sooty-black, rather thickly clothed with dark 

 brown and dull yellow pubescence, the latter forming a line bordering the 

 eyes and small spots in front of thorax at middle, and concentrated in a 

 few small scattered spots and a broad common sutural patch on the elytra, 

 the patch extending from the scutellum to the declivity and broader in 

 front; legs, including the tarsi, annulated with grayish-yellow. Ninth 

 and tenth joints of antennas obliquely emarginate at tip, the 10th and llth 

 joints together shorter than ninth. Head, beak and thorax densely and 

 finely reticulate-punctate. Elytra not wider than and about three times 

 as long as thorax, sides subparallel or very feebly diverging from base to 

 apical fifth, then broadly rounded to apex; disc with feebly impressed 

 rows of small, very close-set punctures; third and fifth intervals slightly 

 elevated and with alternating oblong spots of pale and dark pubescence. 

 Length 6 7.5 mm. 



Wells and Crawford counties, Indiana, scarce; June 24 July 

 1. ("arbondale. 111., June 22. Ranges from Bul'i'alo, X. Y., and 

 Pennsylvania to Missouri and Texas. Occurs on old logs and 

 under loose bark; also in fungus on dead beech and probably 

 other trees. Originally described from Brazil. 



