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Published online by Cambridge University Press: 31 May 2012
Easily recognized by the very short elytra which are divaricate and separately rounded at apex, about equalling the prothorax in length. M. bimaculatus, Say (fig. 23), is somewhat variable in colour, but is ordinarily black except a large testaceous blotch on each elytron. The thorax is rather broad, roughly punctured, the sides irregularly rounded, Length, .20–.32 in. Usually found on flowers, but has been bred from hickory, maple, ash, and dogwood.
* Since publication of the table of genera I have come across the following note by Dr. Hamilton(Can. Ent., XXIII. p. 63):—“The characters separating Cyrtophorus and Microclytus were originally feeble, and have recently become more so by some one discovering that the relative lengths if the antennal joints in the male of the latter are the same as in the former, thus leaving in the males only the presence or absence of a small spine at the end of the third joint of the antennæ as diagnostic.” By a clerical error the legent Cerambycoides is placed one line too high up on p. 86 of my table; it should be on line 2, and embraces all the genera from Chion to Microclytus, inclusive.