A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 5 



Legs rather robust, anterior and middle femora more or less swollen, the 

 former armed on inner margin with a large, acutely triangular tooth, which is 

 not serrate on outer margin ; tibiae normal, anterior pair frequently arcuate ; 

 tarsi rather short, third segment of each deeply emarginate and divided into 

 two long, divergent spines which extend beyond fourth segment; tarsal claws 

 simple or slightly expanded at base. Body elongate, rather broad, more strongly 

 attenuate posteriorly than anteriorly. 



Genotype. — Buprestis nobilis Fabricius. 



Actenodes is a rather large genus and is widely distributed, the 

 species being distributed throughout North, Central, and South 

 America, Mexico, the West Indies, and Africa. It is closely allied to 

 Chrysobotkris and Colobogaster, but can be easily distinguished from 

 either of these two genera by having the third segment of the tarsus 

 armed with two long spines, which extend beyond the fourth 

 segment. The generic characters given above apply only to the 

 American species. The African species placed in this genus may not 

 be congeneric. 



The name Actenodes was first used by Dejean (1833) in his Cata- 

 logue des Coleopteres, in which he included nobilis Fabricius and 

 nine species of which no descriptions had been published. In his 

 third edition of the same work (1836) he gives, in addition to the 

 ones previously listed, viridifasciata, calcarata, and chalybeitarsis, all 

 from Mexico and credited to Chevrolat, of which viridifasciata seems 

 to be a manuscript name. Lacordaire (1857) published a description 

 of the genus, in which he placed a number of species, some of which 

 were previously included in the genus by Dejean. Buprestis nobilis 

 Fabricius is the only originally included species which is available 

 as the genotype. The genotype designation for Actenodes Lacordaire 

 by Chamberlin (1926) as Chrysobotkris chalybeit arsis (Chevrolat) 

 is invalid, since Lacordaire credits the genus to Dejean (1933), where 

 chalybeitarsis is not one of the included species. 



KEY TO THE SPECIES OF ACTENODES 



1. Elytra with green or cupreous spots or fasciae 2 



Elytra without green or cupreous spots or fasciae 4 



2. Elytra with more or less distinct, transverse, zigzag, greenish or 



cupreous fasciae 3 



Elytra with distinct, round, green or cupreous spots 



(1) auronotata (Castelnau and Gory), p. 6. 



3. Posterior angles of pronotum converging 



(2) flexicaulis Schaeffer, p. 8. 

 Posterior angles of pronotum diverging 



k (3) calcarata (Chevrolat), p. 9. 



4. Eyes separated from each other on occiput by about their own width at 



widest part (4) mendax Horn, p. 11. 



Eyes separated from each other on occiput by one-half or less their own 



width at widest part 5 



5. Elytra even (5) arizonica Knull, p. 12. 



Elytra uneven 6 



6. Fourth segment of antenna strongly triangular, at widest part nearly 



twice as wide as third, and the following segments transverse 



(6) acornis (Say), p. 13. 



Fourth segment of antenna slightly triangular, slightly wider than 



third, the following segments not transverse (7) svmi Fisher, p. 15. 



