ISCHYRUS LACORDAIRE 



Ischyrus Lacordaire 1842:89-131. 

 Micrischyrus Alvarenga 1965:86. 



Type Species . Erotylus quadripunctatus Olivier 



1791:431,437. Subsequent designation by Crotch 

 1873a:353; 1873b:144. 



Diagnosis . Characterized by having coarsely faceted 

 eyes, triangular mentum, short ocular stria not surpassing 

 anterior angle of eye, undilated tibia, and semicircular or 

 trapezoidal antennomere IX. 



Description . Length 3.5 - 9.9 mm. Body shape 

 parallel-sided, to elongate, or ovoid, slightly flattened to 

 convex dorsally; microreticulation, surface dull to shining; 

 unicolorous brown to variously banded or spotted, yellow- 

 orange with black pattern. 



Head with ocular striae generally ending at or before 

 anterior angle of eye, rarely extending onto epistome at 

 base of antenna; frons often with an impression at each side 

 near base of antennae; epistome wedge-shaped, generally with 

 truncate apex; epistome punctures generally denser than 

 punctures on vertex. Eye large, bulging from side; facets 

 coarse (Fig. la), varying in size throughout the genus, 

 rarely fine. 



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