163 

 known. Since Lacordaire stated that he collected a specimen 



from Cayenne, the specimen from Cayenne was probably in his 



collection, not Reiche's. If it can be adequately shown 



that the specimens studied by Lacordaire are lost, or that 



Crotch's specimen was studied by Lacordaire, I recommend the 



specimen in the Crotch Collection be chosen as the "type". 



No "type" nor any specimens determined as Ischyrus 

 gratiosus Guerin-Meneville were studied. The description 

 clearly indicated that I. gratiosus is a member of the I. 

 proximus, I. scriptus, and I. palliatus color pattern 

 complex. The description fits I. incertus and matches 

 specimens studied from Colombia and Venezuela. Based on 

 this information I. gratiosus Guerin-Meneville is 

 synonymized under I. incertus Lacordaire. 



Remarks . Ischyrus incertus Lacordaire is similar to I. 

 palliatus Lacordaire, I. scriptus (Olivier) , and I. proximus 

 Lacordaire in color pattern. Despite the similarities and 

 variability of color patterns, the 4 can be separated by the 

 combination of characters listed in the Remarks section of 

 I. scriptus (Olivier) . 



Ischyrus incertus is most similar to I. conductus Kuhnt 

 in morphological characters and basic color pattern. 

 Ischyrus incertus has the central elytral spot complete and 

 triangular; I. conductus has the central elytral marking 

 broken into linear spots. 



References . Ischyrus incertus Lacordaire: Blackwelder 

 1945:465; Crotch 1876 : (55) 431 ; Dejean 1836:429; 1837:453; 



