CERAMBYCID.E 247 



2 Prothorax not biconstricted, generally without apical constriction 

 of any kind, except the delimitation of a more or less pronounced 

 apical bead 3 



Prothorax constricted only at apex; front very much produced as in 

 Ophistomis 7 



Prothorax biconstricted; front variable, though generally briefly pro- 

 duced 8 



3 Body short and stout, the elytra relatively short, more or less cunei- 

 form; front broadly produced as usual, sometimes more narrowly and 

 very notably so, as in Judolia quadrillum Lee 4 



Body elongate and more or less slender, stouter in Strangalia .5 



4 Elytra pale, with black spots in transverse lines to entirely black, 

 almost immaculate in imp-lira; prothorax subangulate at the sides 

 before the middle; third joint of the hind tarsi rather cylindric but 

 short, deeply emarginate. [Type Lept. sexmaculata Linn.]. At- 

 lantic to Pacific regions Judolia 



Elytra black or pale, never transversely banded; prothorax generally 

 not at all angulate at the sides; third hind tarsal joint as in Judolia. 

 [Type Lept. vagans Oliv.]. Atlantic to Pacific regions. 



Brachyleptura 



5 Front extremely short before the antennae and not produced; body 

 small, black or blue, with black or red prothorax; legs very slender, 

 the third joint of the hind tarsi short and bilobed; elytra always 

 parallel, sometimes even inflated posteriorly as in the female of 

 molybdica Lee., the apices very obtuse. [Type Lept. molybdica 

 Lee.]. Atlantic to Pacific regions Paralleling 



Front normal, briefly and broadly produced before the antennae 6 



6 Body small, subparallel, the elytra generally moderately cuneiform; 

 basal angles of the prothorax laterally very prominent; legs and 

 antennae very slender, the third hind tarsal joint bilobed. [Type 

 Lept. americana Hald.]. Atlantic regions Charisalia 



Body small to barely of medium size, slender, the elytra cuneiform, 

 vittate when ornamented; tempora unusually developed; third 

 hind tarsal joint short, deeply bilobed. [Type Lept. vittata Oliv.]. 

 Atlantic to Pacific regions Strangalepta 



Body larger and stouter, the elytra strongly cuneiform and much nar- 

 rowed to the tips; third hind tarsal joint elongate, cylindric, emar- 

 ginate at tip; legs relatively long, slender. [Type assumed Lept. 

 obliterates Hald.]. Atlantic to Pacific Strangalia 



7 Prothorax very convex, not constricted at base, with obtusely promi- 

 nent basal angles, feebly sculptured; elytra broadly, obliquely trun- 

 cate, elongate, cuneiform, flattened and strongly sculptured in the 

 type; third hind tarsal joint narrow but bilobed. [Type Ophistomis 

 ventralis Horn]. Neotropical to southern Arizona Cyphonotida 



8 Elytra cuneiform 9 



Elytra very elongate, attenuated as in Ophistomis and with sinuate 

 sides posteriorly, the apices rounded 12 



9 Tarsi hairy throughout and generally notably stout, the third joint 

 of the posterior short and bilobed; elytra usually shining, sparsely 

 punctate and with transversely banded ornamentation, somewhat 



