856 



FAMILY XLII. — CLERJDJS. 



/. Head black, feebly shining, finely rugose ; elytra coarsely, dense- 

 ly, somewhat confidently punctate. 1637. pallipennis. 

 ff. Head in part pale, very shining, nearly smooth, not rugose ; ely- 

 tra coarsely, less densely, not confidently punctate. 



1638. VERTICALIS. 



aa. Thorax conspicuously longer than broad ; elytra shorter than abdomen 

 (except in tricondylw) . 

 g. Elytra at base narrower than at apical third. tricondyi^e. 

 gg. Elytra at base as wide or wider than at apical third. 

 h. Thorax fully one-half longer than broad. 



*. Flanks of elytra parallel, only slightly abbreviated. schustert. 

 ii. Flanks of elytra convergent behind, but slightly more than one- 

 half the length of abdomen. 1639. longicolus. 

 lih. Thorax very nearly twice as long as wide. 1640. tabida. 



1635 (5189). Hydnocera unifasciata Say, Journ. Phil. 



Acad. Nat. Sci., V, 1825, 176 ; ibid. II, 284. 

 Elongate, rather strongly convex. Bluish-black ; sparse- 

 ly clothed with erect yellowish hairs ; antenna? and tarsi dull 

 yellow. Thorax one-fourth wider than long, sides tuber cu- 

 late. Elytra coarsely, deeply, closely punctate, the narrow 

 post-median Crossbar interrupted at suture and densely 

 clothed with prostrate whitish hairs. Length 3.5^.5 mm. 

 (Fig. 337.) 



R x5i 37 ' Orange and Crawford counties; rare. May 30- 



Jime 2. Beaten from foliage of oak and hickory. 



1636 (5193). Hydnocera humeralis Say, Journ. Phil. Acad. Nat. Sci., Ill, 



1823, 192; ibid. II, 122. 

 Elongate, less strongly convex. Violaceous or bluish-black ; elytra dark 

 blue, humeri usually red ; antennae and legs, especially the front pair, usual- 

 ly in great part reddish. Thorax one-third wider than long, constricted 

 near base and apex, the sides moderately tuberculate. Elytra parallel, 

 more finely and densely punctate than in unifasciata. Length 3.5-5.5 mm. 



Lake, Starke, Elkhart and Crawford counties; scarce. June 1- 

 June 24. The tips oE elytra are sometimes dull yellow. In var. 

 difficiUs Lec. the elytra are unicolorous. 



H. pubescens Lec, dark blue, antenna? and front legs dull yel- 

 low, length 3.5-4.5 mm., and H. pedalis Lec.-, black, with a bluish 

 tinge, elytra only slightly shorter than abdomen, 4.5 mm. in length, 

 are both known from Illinois. The latter has also been taken in 

 Ohio. 



1637 (5199). Hydnocera pallipennis Say, Journ. Phil. Acad. Nat. Sci., V, 



1825, 176 ; ibid. II, 283. 

 Elongate, subdepressed. Black, with a tinge of bronze; antenna? and 

 legs pale; elytra dull yellowish, the side margins, apex, suture and a me- 

 dian crossbar brownish or black, the markings often reduced in extent. 



