259 



Presence of stridulatory files on occipital region of 



head unknown (heads retracted) . No sexual dimorphism was 

 observed. 



Variation . No notable variation was observed in the 

 specimens studied. 



Specimens examined . A total of 14 specimens, 

 representing 11 collection records, was studied (see 

 Appendix C for specific data) . 



Distribution . Known only from Cuba, West Indies (Fig. 

 129) . 



Taxonomic notes . This species is different from all 

 other Ischyrus in many characters (some listed in the 

 Diagnosis) , yet it possesses the generic characters listed 

 in the Generic Account. Ischyrus n. sp . 4 is provisionally 

 placed in Ischyrus pending a revision of the Triplacinae at 

 the generic level. 



Ischyrus n. sp. 5 



Diagnosis . Unique in having an ovoid body shape, 

 uniform brown color (no color pattern) , prosternal plate 

 wider than long, labial palp terminal segment wider than 

 long, and the epistome punctures 2 to 3 times larger than 

 the vertex punctures. 



Description . Length: 5.4 mm; Width: 3.2 mm. Body 

 ovoid, widest at basal third of elytra; microreticulate, 

 weakly shining; body light brown (possibly teneral) ; apical 

 half of antennae black, palpi pale (Fig. 51). 



