186 

 First visible abdominal sternite with coxal line not 



surpassing coxa, often continuous around coxa, at most 



reaching 0.5 distance to posterior edge; abdominal segment 



broadly rounded between metacoxae; coarse punctures 



laterally, fine punctures medially. 



Male genitalia (Fig. 17) with median lobe moderately 

 arched, apically truncate, slightly constricted just before 

 tip; internal sac without noticeable sclerotized structures; 

 flagellum long and narrow, flattened and ribbon-like at 

 basal 0.5, length = 1.6 x median lobe length (Fig. 108a); 

 base of flagellum straight and swollen, sclerite at base 

 claw-shaped (Fig. 108b-d) (30 dissected) . 



Female genitalia (Fig. 18) with spermathecal head 

 kidney-shaped, often with a top-knot; tail swollen, curved 

 like an inverted question mark, "£," (Fig. 108e) (21 

 dissected) . 



Stridulatory files on occipital region of head visible 

 on males; not found on females (Fig. 22) . Compared to 

 females, males have fewer, less impressed punctures on 

 prosternum in front of procoxae . 



Variation . This species shows variation in many of the 

 characters as indicated above. The prosternal plate is 

 variable in shape, from almost parallel-sided to nearly 

 triangular. The palpi vary in general shape, but are always 

 narrowed (Figs. 7f, 20); a character appearing in only a few 

 species of Ischyrus . 



