Ischyrus Lacordaire 1842
Three species of this genus occur in America north of Mexico. Members are found on prostrate white polypore fungi on logs or under bark and adults are frequently collected at light. Ischyrus quadripunctatus (Olivier) is the only member whose larva is known. Its larva is illustrated in Lawrence (1991), and many other references, but no formal description has been made.

LIST OF SPECIES IN NORTH AMERICA
Ischyrus aleator Boyle 1954b; SW.US-MEX
Ischyrus dunedinensis Blatchley 1917. "Scrub Ischyrus" Skelley 1994b; SE.US
Ischyrus quadripunctatus quadripunctatus (Olivier 1792); CAN-E.US-S.AMER.
Ischyrus quadripunctatus chiasticus Boyle 1954b, Skelley 1996; SW.US-MEX

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