CERAMBYCID^E 321 



little paler, the maculation umber brown; cinereous pubescence of 

 the elytral ground only moderately dense, of the pronotum finer and 

 less obvious as usual; antennae (9) about two and three-fourths 

 times as long as the body, very tenuous; prothorax (9 ) two-thirds 

 wider than long, with two broad nubilous vittae enlarged anteriorly 

 and sometimes almost resolved into four large spots, the spine just 

 behind basal third; elytra (9 ) not more than two-thirds longer than 

 wide, rather finely, sparsely punctate, strongly and closely externally, 

 with a common transverse dark spot just behind the humeri, nar- 

 rowly prolonged posteriorly along the suture, a large post-humeral 

 area on the flanks, extending onto the disk, where it is truncated 

 and paralleled by two elongate spots in oblique line, the post-medial 

 dark spot very large, irregularly subquadrate, attaining but not 

 crossing the paler brown sutural beading, divided near the external 

 margin; between this and the apex there is a single rather large discal 

 spot; femora (9 ) moderately clavate, the posterior slender, not cla- 

 vate; pale hind tarsi with the basal joint rather longer than the 

 entire remainder, the legs normally slender and longer than in celtis. 

 Length (c? 9 ) 3.6-4.6 mm.; width 1.0-1.5 mm. New York to 

 Wisconsin querci Fitch 



Form narrow and elongate, feebly convex, deep black throughout, the 

 coxae and femoral bases rufo-piceous; cinereous vestiture whitish, 

 dense as usual, much finer and less distinct on the prothorax; head 

 small, indented; antennae (9 ) two and one-half times as long as the 

 body, very tenuous, obscure testaceous; prothorax as in the female 

 of querci; elytra narrower and much more elongate, twice as long as 

 wide, narrowing rather rapidly behind to the narrowly subtruncate 

 apices, the punctures small and sparse, coarser and dense on the 

 flanks, the maculation deep black as in querci, except that the post- 

 median fascia is very broad and more even from the suture to the 

 margin and two-fifths as wide as the entire length of the elytra, 

 along the margin prolonged nubilously to the apex, where it adjoins 

 a very small feeble discal spot; last dorsal not appearing behind the 

 elytra; legs normally long, the two anterior femora feebly clavate, 

 the posterior linear, not clavate; tarsi shorter but very slender, the 

 basal joint of the posterior barely longer than the remainder. 

 Length (9 ) 4.0 mm.; width 1.35 mm. Pennsylvania (Buena Vista 

 Spring, Franklin Co.) tristis n. sp. 



II Body smaller than in any of the preceding species, not very slender, 

 black or piceous, the pubescence as usual whitish; prothorax shorter, 

 twice as wide as long, the spine strong, before basal fourth, the disk 

 not clearly maculate; elytra less than twice as long as wide in both 

 sexes, with a transverse common post-scutellar and humeral spot, 

 sometimes united, a small marginal spot behind the humeri and 

 obliquely prolonged discally for a short distance and a very broad 

 entire transverse fascia just behind the middle, separated from the 

 broadly and solidly black apex by a narrower transverse pale fascia; 

 there is also a small sutural macula before the middle, represent- 

 ing the two small inner spots of the oblique series in the querci group; 

 T. L. Casey, Mem. Col. IV, Oct. 1913. 



