226 

 Gorham' s varieties, a and P, differ from the black 



headed lectotype only in having a red head. As Gorham 



stated, "The variation in the colour of the head is not 



unusual in this genus." The differences between variety a 



and p are even smaller: P is larger and more coarsely 



punctate than a. Both specimens of these varieties studied 



by Gorham are deposited in the Natural History Museum, 



London, and are designated as paralectotypes . 



Remarks . Ischyrus septemsignatus is most similar to I. 

 scutellaris and I. bogotae in color pattern. Ischyrus 

 scutellaris has 2 free spots at the center of each elytron; 

 I. septemsignatus has only one. Ischyrus bogotae has a 

 larger body size and a single large basal pronotal spot; I. 

 septemsignatus is smaller and lacks large basal elytral 

 markings . 



References . Blackwelder 1945:465; Kuhnt 1909:63; 

 1911:43. 



Ischyrus tetrasticus Gorham 



Ischyrus tetrasticus Gorham 1887:41, t.3 f.l. 



Diagnosis . Recognized by pronotum having only 4 free 

 pronotal spots in a transverse row, orange head with a black 

 basal spot, broad maxillary palp terminal segment, and 

 central elytral band broadly connected to the suture. 



Description . Length 6.7-7.7 mm; Width: 3.0-3.8 mm. 

 Body elongate, widest at basal third of elytra; 

 microreticulate, feebly shining; orange with black pattern 

 (Fig. 74) . 



